In August 2024, ESET researchers detected cyberespionage exercise carried out by the China-aligned MirrorFace superior persistent risk (APT) group towards a Central European diplomatic institute in relation to Expo 2025, which will likely be held in Osaka, Japan.
Recognized primarily for its cyberespionage actions towards organizations in Japan, to the very best of our information, that is the primary time MirrorFace meant to infiltrate a European entity. The marketing campaign, which we uncovered in Q2 and Q3 of 2024 and named Operation AkaiRyū (Japanese for RedDragon), showcases refreshed techniques, strategies, and procedures (TTPs) that we noticed all through 2024: the introduction of latest instruments (reminiscent of a custom-made AsyncRAT), the resurrection of ANEL, and a fancy execution chain.
On this blogpost, we current particulars of the Operation AkaiRyū assaults and findings from our investigation of the diplomatic institute case, together with information from our forensic evaluation. ESET Analysis introduced the outcomes of this evaluation on the Joint Safety Analyst Convention (JSAC) in January 2025.
Key factors of this blogpost:
- MirrorFace has refreshed its TTPs and tooling.
- MirrorFace has began utilizing ANEL, a backdoor beforehand related completely with APT10.
- MirrorFace has began deploying a closely custom-made variant of AsyncRAT, utilizing a fancy execution chain to run it inside Home windows Sandbox.
- To our information, MirrorFace focused a European entity for the primary time.
- We collaborated with the affected Central European diplomatic institute and carried out a forensic investigation.
- The findings obtained throughout that investigation have offered us with higher perception into MirrorFace’s post-compromise actions.
MirrorFace profile
MirrorFace, also called Earth Kasha, is a China-aligned risk actor till now nearly completely focusing on firms and organizations in Japan but additionally some situated elsewhere which have relationships with Japan. As defined on this blogpost, we now take into account MirrorFace to be a subgroup underneath the APT10 umbrella. MirrorFace has been lively since not less than 2019 and has been reported to focus on media, defense-related firms, assume tanks, diplomatic organizations, monetary establishments, educational establishments, and producers. In 2022, we found a MirrorFace spearphishing marketing campaign focusing on Japanese political entities.
MirrorFace focuses on espionage and exfiltration of information of curiosity; it’s the solely group recognized to make use of the LODEINFO and HiddenFace backdoors. Within the 2024 actions analyzed on this blogpost, MirrorFace began utilizing APT10’s former signature backdoor, ANEL, in its operations as effectively.
Overview
Very similar to earlier MirrorFace assaults, Operation AkaiRyū started with fastidiously crafted spearphishing emails designed to entice recipients to open malicious attachments. Our findings counsel that regardless of this group’s foray past the borders of its typical searching floor, the risk actor nonetheless maintains a powerful concentrate on Japan and occasions tied to the nation. Nonetheless, this isn’t the primary time MirrorFace has been reported to function exterior of Japan: Pattern Micro and the Vietnamese Nationwide Cyber Safety Heart (doc in Vietnamese) reported on such instances in Taiwan, India, and Vietnam.
ANEL’s comeback
Throughout our evaluation of Operation AkaiRyū, we found that MirrorFace has considerably refreshed its TTPs and tooling. MirrorFace began utilizing ANEL (additionally known as UPPERCUT) – a backdoor thought-about unique to APT10 – which is stunning, because it was believed that ANEL was deserted across the finish of 2018 or the beginning of 2019 and that LODEINFO succeeded it, showing later in 2019. The small distinction in model numbers between 2018 and 2024 ANELs, 5.5.0 and 5.5.4, and the truth that APT10 used to replace ANEL each few months, strongly counsel that the event of ANEL has restarted.
Using ANEL additionally offers additional proof within the ongoing debate in regards to the potential connection between MirrorFace and APT10. The truth that MirrorFace has began utilizing ANEL, and the opposite beforehand recognized data, reminiscent of comparable focusing on and malware code similarities, led us to make a change in our attribution: we now imagine that MirrorFace is a subgroup underneath the APT10 umbrella. This attribution change aligns our pondering with different researchers who already take into account MirrorFace to be part of APT10, reminiscent of these at Macnica (report in Japanese), Kaspersky, ITOCHU Cyber & Intelligence Inc., and Cybereason. Others, as at Pattern Micro, as of now nonetheless take into account MirrorFace to be solely doubtlessly associated to APT10.
First use of AsyncRAT and Visible Studio Code by MirrorFace
In 2024, MirrorFace additionally deployed a closely custom-made variant of AsyncRAT, embedding this malware right into a newly noticed, intricate execution chain that runs the RAT inside Home windows Sandbox. This methodology successfully obscures the malicious actions from safety controls and hamstrings efforts to detect the compromise.
In parallel to the malware, MirrorFace additionally began deploying Visible Studio Code (VS Code) to abuse its distant tunnels function. Distant tunnels allow MirrorFace to determine stealthy entry to the compromised machine, execute arbitrary code, and ship different instruments. MirrorFace just isn’t the one APT group abusing VS Code: Tropic Trooper and Mustang Panda have additionally been reported utilizing it of their assaults.
Moreover, MirrorFace continued to make use of its present flagship backdoor, HiddenFace, additional bolstering persistence on compromised machines. Whereas ANEL is utilized by MirrorFace because the first-line backdoor, proper after the goal has been compromised, HiddenFace is deployed within the later levels of the assault. Additionally it is price noting that in 2024 we didn’t observe any use of LODEINFO, one other backdoor used completely by MirrorFace.
Forensic evaluation of the compromise
We contacted the affected institute to tell them in regards to the assault and to wash up the compromise as quickly as potential. The institute collaborated intently with us throughout and after the assault, and moreover offered us with the disk photographs from the compromised machines. This enabled us to carry out forensic analyses on these photographs and uncover additional MirrorFace exercise.
ESET Analysis offered extra technical particulars about ANEL’s return to ESET Menace Intelligence clients on September 4th, 2024. Pattern Micro revealed their findings on then-recent MirrorFace actions on October 21st, 2024 in Japanese and on November 26th, 2024 in English: these overlap with Operation AkaiRyū and likewise point out the return of the ANEL backdoor. Moreover, in January 2025, the Japanese Nationwide Police Company (NPA) revealed a warning about MirrorFace actions to organizations, companies, and people in Japan. Operation AkaiRyū corresponds with Marketing campaign C, as talked about within the Japanese model of NPA’s warning. Nonetheless, NPA mentions the focusing on of Japanese entities completely – people and organizations primarily associated to academia, assume tanks, politics, and the media.
Along with Pattern Micro’s report and NPA’s warning, we offer an unique evaluation of MirrorFace post-compromise actions, which we had been in a position to observe because of the shut cooperation of the affected group. This contains the deployment of a closely custom-made AsyncRAT, abuse of VS Code distant tunnels, and particulars on the execution chain that runs malware inside Home windows Sandbox to keep away from detection and conceal the carried out actions.
On this blogpost, we cowl two distinct instances: a Central European diplomatic institute and a Japanese analysis institute. Despite the fact that MirrorFace’s total strategy is identical in each instances, there are notable variations within the preliminary entry course of; therefore we describe them each.
Technical evaluation
Between June and September 2024, we noticed MirrorFace conducting a number of spearphishing campaigns. Based mostly on our information, the attackers primarily gained preliminary entry by tricking targets into opening malicious attachments or hyperlinks, then they leveraged authentic purposes and instruments to stealthily set up their malware.
Preliminary entry
We weren’t in a position to decide the preliminary assault vector for all of the instances noticed in 2024. Nonetheless, primarily based on the info out there to us, we assume that spearphishing was the one assault vector utilized by MirrorFace. The group impersonates trusted organizations or people to persuade recipients to open paperwork or click on hyperlinks. The next findings on preliminary entry align with these within the Pattern Micro article, though they don’t seem to be totally the identical.
Particularly, in Operation AkaiRyū, MirrorFace abused each McAfee-developed purposes and likewise one developed by JustSystems to run ANEL. Whereas Pattern Micro reported Home windows Administration Instrumentation (WMI) and explorer.exe because the execution proxy pair for ANEL, we unearthed one other pair: WMI and wlrmdr.exe (Home windows logon reminder). We additionally present an electronic mail dialog between a disguised MirrorFace operator and a goal.
Case 1: Japanese analysis institute
On June 20th, 2024, MirrorFace focused two staff of a Japanese analysis institute, utilizing a malicious, password-protected Phrase doc delivered in an unknown method.
The paperwork triggered VBA code on a easy mouseover occasion – the malicious code was triggered by shifting the mouse over textual content bins positioned within the doc. It then abused a signed McAfee executable to load ANEL (model 5.5.4) into reminiscence. The compromise chain is depicted in Determine 1.
Case 2: Central European diplomatic institute
On August 26th, 2024, MirrorFace focused a Central European diplomatic institute. To our information, that is the primary, and, up to now, solely time MirrorFace has focused an entity in Europe.
MirrorFace operators arrange their spearphishing assault by crafting an electronic mail message (proven in Determine 2) that references a earlier, authentic interplay between the institute and a Japanese NGO. The authentic interplay was most likely obtained from a earlier marketing campaign. As may be seen, this spearphishing arrange message refers back to the upcoming Expo 2025 exhibition, an occasion that will likely be held in Japan.
This primary electronic mail was innocent, however as soon as the goal responded, MirrorFace operators despatched an electronic mail message with a malicious OneDrive hyperlink resulting in a ZIP archive with a LNK file disguised as a Phrase doc named The EXPO Exhibition in Japan in 2025.docx.lnk. This second message is proven in Determine 3. Utilizing this strategy, MirrorFace hid the payload till the goal was engaged within the spearphishing scheme.
As soon as opened, the LNK file launches a fancy compromise chain, depicted in Determine 4 and Determine 5.
The LNK file runs cmd.exe with a set of PowerShell instructions to drop extra information, together with a malicious Phrase file, tmp.docx, which hundreds a malicious Phrase template, normal_.dotm, containing VBA code. The contents of the Phrase doc tmp.docx are depicted in Determine 6, and doubtless are meant to behave as a decoy, whereas malicious actions are working within the background.
The VBA code extracts a legitimately signed utility from JustSystems Company to side-load and decrypt the ANEL backdoor (model 5.5.5). This gave MirrorFace a foothold to start post-compromise operations.
Toolset
In Operation AkaiRyū, MirrorFace relied not solely on its customized malware, but additionally on numerous instruments and a custom-made variant of a publicly out there distant entry trojan (RAT).
ANEL
ANEL (also called UPPERCUT) is a backdoor that was beforehand related completely with APT10. In 2024, MirrorFace began utilizing ANEL as its first-line backdoor. ANEL’s improvement, till 2018, was described most just lately in Secureworks’ JSAC 2019 presentation. The ANEL variants noticed in 2024 had been publicly described by Pattern Micro.
ANEL is a backdoor, solely discovered on disk in an encrypted kind, and whose decrypted DLL kind is simply ever present in reminiscence as soon as a loader has decrypted it in preparation for execution. ANEL communicates with its C&C server over HTTP, the place the transmitted information is encrypted to guard it in case the communication is being captured. ANEL helps fundamental instructions for file manipulation, payload execution, and taking a screenshot.
ANELLDR
ANELLDR is a loader completely used to decrypt the ANEL backdoor and run it in reminiscence. Pattern Micro described ANELLDR of their article.
HiddenFace
HiddenFace is MirrorFace’s present flagship backdoor, with a heavy concentrate on modularity; we described it intimately on this JSAC 2024 presentation.
FaceXInjector
FaceXInjector is a C# injection device saved in an XML file, compiled and executed by the Microsoft MSBuild utility, and used to completely execute HiddenFace. We described FaceXInjector in the identical JSAC 2024 presentation devoted to HiddenFace.
AsyncRAT
AsyncRAT is a RAT publicly out there on GitHub. In 2024, we detected that MirrorFace began utilizing a closely custom-made AsyncRAT within the later levels of its assaults. The group ensures AsyncRAT’s persistence by registering a scheduled activity that executes at machine startup; as soon as triggered, a fancy chain (depicted in Determine 7) launches AsyncRAT inside Home windows Sandbox, which have to be manually enabled and requires a reboot. We had been unable to find out how MirrorFace permits this function.
The next information are delivered to the compromised machine in an effort to efficiently execute AsyncRAT:
- 7z.exe – authentic 7-Zip executable.
- 7z.dll – authentic 7-Zip library.
.7z – password-protected 7z archive containing AsyncRAT, named setup.exe..bat – batch script that unpacks AsyncRAT and runs it..wsb – Home windows Sandbox configuration file to run.bat .
The triggered scheduled activity executes Home windows Sandbox with
Specifically, the config file defines whether or not to allow networking and listing mapping, the devoted reminiscence dimension, and the command to execute on launch. Within the file proven in Determine 8, a batch file situated within the sandbox folder is executed. The batch file extracts AsyncRAT from the 7z archive, then creates and launches a scheduled activity that executes AsyncRAT each hour.
The AsyncRAT variant utilized by MirrorFace is closely custom-made. The next are the primary options and adjustments launched by MirrorFace:
- Pattern tagging – AsyncRAT may be compiled for a selected sufferer and MirrorFace can add a tag to the configuration to mark the pattern. If the tag just isn’t specified, the machine’s NetBIOS title is used because the tag. This tag is additional utilized in different launched options as effectively.
- Connection to a C&C server through Tor – MirrorFace’s AsyncRAT can obtain and begin a Tor shopper, and proxy its communication with a C&C server via the shopper. AsyncRAT selects this feature provided that the hardcoded C&C domains finish with .onion. This strategy was chosen in each samples we noticed through the investigation of Case 2: Central European diplomatic institute.
- Area era algorithm (DGA) – An alternative choice to utilizing Tor, this variant can use a DGA to generate a C&C area. The DGA can even generate machine-specific domains utilizing the aforementioned tag. Be aware that HiddenFace additionally makes use of a DGA with the opportunity of producing machine-specific domains, though the DGA utilized in HiddenFace differs from the AsyncRAT one.
- Working time – Earlier than connecting to a C&C server, AsyncRAT checks whether or not the present hour and day of the week are inside working hours and days outlined within the configuration. Be aware that MirrorFace’s AsyncRAT shares this function with HiddenFace as effectively.
Visible Studio Code distant tunnels
Visible Studio Code is a free source-code editor developed by Microsoft. Visible Studio Code’s distant improvement function, distant tunnels, permits builders to run Visible Studio Code domestically and connect with a improvement machine that hosts the supply code and debugging atmosphere. Menace actors can misuse this to achieve distant entry, execute code, and ship instruments to a compromised machine. MirrorFace has been doing so since 2024; nevertheless, it’s not the one APT group that has used such distant tunnels: different China-aligned APT teams reminiscent of Tropic Trooper and Mustang Panda have additionally used them of their assaults.
Submit-compromise actions
Our investigation into Case 2: Central European diplomatic institute uncovered a few of MirrorFace’s post-compromise actions. By shut collaboration with the institute, we gained higher perception into the malware and instruments deployed by MirrorFace, as seen in Desk 1.
Be aware that the malware and instruments are ordered within the desk for simpler comparability of what was deployed on every of the 2 recognized compromised machines however doesn’t replicate how they had been deployed chronologically.
Desk 1. Malware and instruments deployed by MirrorFace all through the assault
| Instruments | Notes | Machine A | Machine B |
| ANEL | APT10’s backdoor that MirrorFace makes use of as a first-line backdoor. |
● |
● |
| PuTTY | An open-source terminal emulator, serial console, and community file switch utility. | ● | ● |
| VS Code | A code editor developed by Microsoft. | ● | ● |
| HiddenFace | MirrorFace’s flagship backdoor. | ● | ● |
| Second HiddenFace variant | MirrorFace’s flagship backdoor. | ● | |
| AsyncRAT | RAT publicly out there on GitHub. | ● | ● |
| Hidden Begin | A device that can be utilized to bypass UAC, disguise Home windows consoles, and run applications within the background. | ● | |
| csvde | Respectable Microsoft device out there on Home windows servers that imports and exports information from Energetic Listing Area Companies (AD DS). | ● | |
| Rubeus | Toolset for Kerberos interplay and abuse, publicly out there on GitHub. | ● | |
| frp | Quick reverse proxy publicly out there on GitHub. | ● | |
| Unknown device | Disguised underneath the title oneuu.exe. We had been unable to get well the device throughout our evaluation. | ● |
The group selectively deployed post-compromise instruments based on its goals and the goal’s atmosphere. Machine A belonged to a mission coordinator and Machine B to an IT worker. The information out there to us means that MirrorFace stole private information from Machine A and sought deeper community entry on Machine B, aligning the assumed goals with the workers’ roles.
Day 0 – August 27th, 2024
MirrorFace operators despatched an electronic mail with a malicious hyperlink on August 26th, 2024 to the institute’s CEO. Nonetheless, because the CEO didn’t have entry to a machine working Home windows, the CEO forwarded the e-mail to 2 different staff. Each opened the dangerous LNK file, The EXPO Exhibition in Japan in 2025.docx.lnk, the following day, compromising two institute machines and resulting in the deployment of ANEL. Thus, we take into account August 27th, 2024, as Day 0 of the compromise. No extra exercise was noticed past this foothold institution.
Day 1 – August 28th, 2024
The subsequent day, MirrorFace returned and continued with its actions. The group deployed a number of instruments for entry, management, and file supply on each compromised machines. Among the many instruments deployed had been PuTTY, VS Code, and HiddenFace – MirrorFace’s present flagship backdoor. On Machine A, MirrorFace additionally tried to deploy the device Hidden Begin. On Machine B, the actor moreover deployed csvde and the custom-made variant of AsyncRAT.
Day 2 – August 29th, 2024
On Day 2, MirrorFace was lively on each machines. This included deploying extra instruments. On Machine A, MirrorFace deployed a second occasion of HiddenFace. On Machine B, VS Code’s distant tunnel, HiddenFace, and AsyncRAT had been executed. In addition to these, MirrorFace additionally deployed and executed frp and Rubeus through HiddenFace. That is the final day on which we noticed any MirrorFace exercise on Machine B.
Day 3 – August 30th, 2024
MirrorFace remained lively solely on Machine A. The institute, having began assault mitigation measures on August 29th, 2024, might need prevented additional MirrorFace exercise on Machine B. On Machine A, the group deployed AsyncRAT and tried to take care of persistence by registering a scheduled activity.
Day 6 – September 2nd, 2024
Over the weekend, i.e., on August 31st and September 1st, 2024, Machine A was inactive. On Monday, September 2nd, 2024, Machine A was booted and with it MirrorFace’s exercise resumed as effectively. The principle occasion of Day 6 was that the group exported Google Chrome’s net information reminiscent of contact data, key phrases, autofill information, and saved bank card data right into a SQLite database file. We had been unable to find out how MirrorFace exported the info, and whether or not or how the info was exfiltrated.
Conclusion
In 2024, MirrorFace refreshed its TTPs and tooling. It began utilizing ANEL – believed to have been deserted round 2018/2019 – as its first-line backdoor. Mixed with different data, we conclude that MirrorFace is a subgroup underneath the APT10 umbrella. In addition to ANEL, MirrorFace has additionally began utilizing different instruments reminiscent of a closely custom-made AsyncRAT, Home windows Sandbox, and VS Code distant tunnels.
As part of Operation AkaiRyū, MirrorFace focused a Central European diplomatic institute – to the very best of our information, that is the primary time the group has attacked an entity in Europe – utilizing the identical refreshed TTPs seen throughout its 2024 campaigns. Throughout this assault, the risk actor used the upcoming World Expo 2025 – to be held in Osaka, Japan – as a lure. This exhibits that even contemplating this new broader geographic focusing on, MirrorFace stays centered on Japan and occasions associated to it.
Our shut collaboration with the affected group offered a uncommon, in-depth view of post-compromise actions that might have in any other case gone unseen. Nonetheless, there are nonetheless lots of lacking items of the puzzle to attract an entire image of the actions. One of many causes is MirrorFace’s improved operational safety, which has develop into extra thorough and hinders incident investigations by deleting the delivered instruments and information, clearing Home windows occasion logs, and working malware in Home windows Sandbox.
For any inquiries about our analysis revealed on WeLiveSecurity, please contact us at [email protected].ESET Analysis presents personal APT intelligence stories and information feeds. For any inquiries about this service, go to the ESET Menace Intelligence web page.
IoCs
A complete checklist of indicators of compromise (IoCs) and samples may be present in our GitHub repository.
Information
| SHA-1 | Filename | Detection | Description |
| 018944FC47EE2329B23B |
3b3cabc5 | Win32/MirrorFace.A | AES-encrypted ANEL. |
| 68B72DA59467B1BB477D |
vsodscpl.dll | Win32/MirrorFace.A | ANELLDR. |
| 02D32978543B9DD1303E |
AtokLib.dll | Win32/MirrorFace.A | ANELLDR. |
| 2FB3B8099499FEE03EA7 |
CodeStartUser.bat | Win32/MirrorFace.A | Malicious batch file. |
| 9B2B9A49F52B37927E6A |
erBkVRZT.bat | Win32/MirrorFace.A | Malicious batch file. |
| AB65C08DA16A45565DBA |
useractivitybroker.xml | Win32/ FaceXInjector.A | FaceXInjector. |
| 875DC27963F8679E7D8B |
temp.log | Win32/MirrorFace.A | Malicious CAB file. |
| 694B1DD3187E876C5743 |
tmp.docx | Win32/MirrorFace.A | Decoy Phrase |
| F5BA545D4A1683675698 |
normal_.dotm | Win32/MirrorFace.A | Phrase template with |
| 233029813051D20B61D0 |
The EXPO |
Win32/MirrorFace.A | Malicious LNK file. |
| 8361F7DBF81093928DA5 |
The EXPO |
Win32/MirrorFace.A | Malicious ZIP archive. |
| 1AFDCE38AF37B9452FB4 |
NK9C4PH_.zip | Win32/MirrorFace.A | Malicious ZIP archive. |
| E3DA9467D0C89A9312EA |
N/A | MSIL/Riskware.Rubeus.A | Rubeus device. |
| D2C25AF9EE6E60A341B0 |
Tk4AJbXk.wsb | Win32/MirrorFace.A | Malicious Home windows |
Community
| IP | Area | Internet hosting supplier | First seen | Particulars |
| N/A | vu4fleh3yd4ehpfpc |
N/A | 2024‑08‑28 | MirrorFace’s AsyncRAT C&C server. |
| N/A | u4mrhg3y6jyfw2dmm |
N/A | 2024‑08‑28 | MirrorFace’s AsyncRAT C&C server. |
| 45.32.116[.]146 | N/A | The Fixed Firm, LLC | 2024‑08‑27 | ANEL C&C server. |
| 64.176.56[.]26 | N/A | The Fixed Firm, LLC | N/A | Distant server for FRP shopper. |
| 104.233.167[.]135 | N/A | PEG-TKY1 | 2024‑08‑27 | HiddenFace C&C server. |
| 152.42.202[.]137 | N/A | DigitalOcean, LLC | 2024‑08‑27 | HiddenFace C&C server. |
| 208.85.18[.]4 | N/A | The Fixed Firm, LLC | 2024‑08‑27 | ANEL C&C server. |
MITRE ATT&CK strategies
This desk was constructed utilizing model 16 of the MITRE ATT&CK framework.
| Tactic | ID | Title | Description |
| Useful resource Growth | T1587.001 | Develop Capabilities: Malware | MirrorFace has developed customized instruments reminiscent of HiddenFace. |
| T1585.002 | Set up Accounts: E mail Accounts | MirrorFace created a Gmail account and used it to ship a spearphishing electronic mail. | |
| T1585.003 | Set up Accounts: Cloud Accounts | MirrorFace created a OneDrive account to host malicious information. | |
| T1588.001 | Receive Capabilities: Malware | MirrorFace utilized and customised a publicly out there RAT, AsyncRAT, for its operations. | |
| T1588.002 | Receive Capabilities: Instrument | MirrorFace utilized Hidden Begin in its operations. | |
| Preliminary Entry | T1566.002 | Phishing: Spearphishing Hyperlink | MirrorFace despatched a spearphishing electronic mail with a malicious OneDrive hyperlink. |
| Execution | T1053.005 | Scheduled Process/Job: Scheduled Process | MirrorFace used scheduled duties to execute HiddenFace and AsyncRAT. |
| T1059.001 | Command-Line Interface: PowerShell | MirrorFace used PowerShell instructions to run Visible Studio Code’s distant tunnels. | |
| T1059.003 | Command-Line Interface: Home windows Command Shell | MirrorFace used the Home windows command shell to make sure persistence for HiddenFace. | |
| T1204.001 | Person Execution: Malicious Hyperlink | MirrorFace relied on the goal to obtain a malicious file from a shared OneDrive hyperlink. | |
| T1204.002 | Person Execution: Malicious File | MirrorFace relied on the goal to run a malicious LNK file that deploys ANEL. | |
| T1047 | Home windows Administration Instrumentation | MirrorFace used WMI as an execution proxy to run ANEL. | |
| Persistence | T1547.001 | Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder | ANEL makes use of one of many startup directories for persistence. |
| T1574.001 | Hijack Execution Movement: DLL Search Order Hijacking | MirrorFace side-loads ANEL by dropping a malicious library and a authentic executable (e.g., ScnCfg32.Exe) | |
| Protection Evasion | T1027.004 | Obfuscated Information or Info: Compile After Supply | FaceXInjector is compiled on each scheduled activity run. |
| T1027.007 | Obfuscated Information or Info: Dynamic API Decision | HiddenFace dynamically resolves the mandatory APIs upon its startup. | |
| T1027.011 | Obfuscated Information or Info: Fileless Storage | HiddenFace is saved in a registry key on the compromised machine. | |
| T1055 | Course of Injection | FaceXInjector is used to inject HiddenFace right into a authentic Home windows utility. | |
| T1070.004 | Indicator Elimination: File Deletion | As soon as HiddenFace is moved to the registry, the file by which it was delivered is deleted. | |
| T1070.006 | Indicator Elimination: Timestomp | HiddenFace can timestomp information in chosen directories. | |
| T1112 | Modify Registry | FaceXInjector creates a registry key into which it shops HiddenFace. | |
| T1127.001 | Trusted Developer Utilities: MSBuild | MSBuild is abused to execute FaceXInjector. | |
| T1140 | Deobfuscate/Decode Information or Info | HiddenFace reads exterior modules from an AES-encrypted file. | |
| T1622 | Debugger Evasion | HiddenFace checks whether or not it’s being debugged. | |
| T1564.001 | Cover Artifacts: Hidden Information and Directories | MirrorFace hid directories with AsyncRAT. | |
| T1564.003 | Cover Artifacts: Hidden Window | MirrorFace tried to make use of the device Hidden Begin, which may disguise home windows. | |
| T1564.006 | Cover Artifacts: Run Digital Occasion | MirrorFace used Home windows Sandbox to run AsyncRAT. | |
| T1070.001 | Indicator Elimination: Clear Home windows Occasion Logs | MirrorFace cleared Home windows occasion logs to destroy proof of its actions. | |
| T1036.007 | Masquerading: Double File Extension | MirrorFace used a so-called double file extension, .docx.lnk, to deceive its goal. | |
| T1218 | Signed Binary Proxy Execution | MirrorFace used wlrmdr.exe as an execution proxy to run ANEL. | |
| T1221 | Template Injection | MirrorFace used Phrase template injection to run malicious VBA code. | |
| Discovery | T1012 | Question Registry | HiddenFace queries the registry for machine-specific data such because the machine ID. |
| T1033 | System Proprietor/Person Discovery | HiddenFace determines the presently logged in consumer’s title and sends it to the C&C server. | |
| T1057 | Course of Discovery | HiddenFace checks presently working processes. | |
| T1082 | System Info Discovery | HiddenFace gathers numerous system data and sends it to the C&C server. | |
| T1124 | System Time Discovery | HiddenFace determines the system time and sends it to the C&C server. | |
| T1087.002 | Account Discovery: Area Account | MirrorFace used the device csvde to export information from Energetic Listing Area Companies. | |
| Assortment | T1115 | Clipboard Knowledge | HiddenFace collects clipboard information and sends it to the C&C server. |
| T1113 | Display screen Seize | ANEL can take a screenshot and ship it to the C&C server. | |
| Command and Management | T1001.001 | Knowledge Obfuscation: Junk Knowledge | HiddenFace provides junk information to the messages despatched to the C&C server. |
| T1568.002 | Dynamic Decision: Area Technology Algorithms | HiddenFace makes use of a DGA to generate C&C server domains. | |
| T1573 | Encrypted Channel | HiddenFace communicates with its C&C server over an encrypted channel. | |
| T1071.001 | Customary Software Layer Protocol: Internet Protocols | ANEL makes use of HTTP to speak with its C&C server. | |
| T1132.001 | Knowledge Encoding: Customary Encoding | ANEL makes use of base64 to encode information despatched to the C&C server. | |
| Exfiltration | T1030 | Knowledge Switch Dimension Limits | HiddenFace can, upon operator request, cut up information and ship it in chunks to the C&C server. |
| T1041 | Exfiltration Over C2 Channel | HiddenFace exfiltrates requested information to the C&C server. |
