Analysis
- max time kernel
141s - max time network
160s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
13/06/2024, 01:04
General
- Target 1691b1ffa5c27ee1273bbc3a6768026e8fcb815d3dd3b11c99de8e915df7bffb.exe
- Size 467KB
- Sample240613-be2e1aybpd
- SHA256 1691b1ffa5c27ee1273bbc3a6768026e8fcb815d3dd3b11c99de8e915df7bffb
Malware Config
Extracted
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stealc
Extracted
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vidar
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https://t.me/memve4erin
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https://steamcommunity.com/profiles/76561199699680841
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:129.0) Gecko/20100101 Firefox/129.0
Signatures
- Detect Vidar Stealer 11 IoCs
- Stealc
Stealc is an infostealer written in C++.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Detect binaries embedding considerable number of MFA browser extension IDs. 8 IoCs
- Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 8 IoCs
- Detects Windows executables referencing non-Windows User-Agents 11 IoCs
- Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 8 IoCs
- Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 11 IoCs
- Detects executables containing potential Windows Defender anti-emulation checks 11 IoCs
- Downloads MZ/PE file
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 12 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\1691b1ffa5c27ee1273bbc3a6768026e8fcb815d3dd3b11c99de8e915df7bffb.exe"C:\Users\Admin\AppData\Local\Temp\1691b1ffa5c27ee1273bbc3a6768026e8fcb815d3dd3b11c99de8e915df7bffb.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"2⤵
- Checks computer location settings
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\IDAEHCFHJJJJ" & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /t 104⤵
- Delays execution with timeout.exe
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=3188 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:31⤵
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4044 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
SCT Auditing Pending Reports
Sdch Dictionaries
memory/3304-13-0x000000001B660000-0x000000001B8BF000-memory.dmp
memory/3304-28-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3304-6-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3304-7-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3304-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3304-11-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3304-64-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3304-2-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3304-29-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3304-45-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3304-46-0x0000000000400000-0x0000000000648000-memory.dmp
memory/3304-63-0x0000000000400000-0x0000000000648000-memory.dmp
memory/5112-3-0x0000000000DD0000-0x0000000000DD1000-memory.dmp
memory/5112-0-0x0000000000DD0000-0x0000000000DD1000-memory.dmp
memory/5112-1-0x0000000000DD0000-0x0000000000DD1000-memory.dmp