Analysis
- max time kernel
125s - max time network
132s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
- submitted
14/06/2024, 03:28
General
- Target 86e04aa7c1b0e77e6c1d8da16384b762e594b13e3394d534e57c2d5427a69416.exe
- Size 2.1MB
- Sample240614-d1d8psxdpn
- SHA256 86e04aa7c1b0e77e6c1d8da16384b762e594b13e3394d534e57c2d5427a69416
Malware Config
Extracted
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stealc
Extracted
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vidar
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https://t.me/r8z0l
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https://steamcommunity.com/profiles/76561199698764354
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user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
- Detect Vidar Stealer 15 IoCs
- Stealc
Stealc is an infostealer written in C++.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Downloads MZ/PE file
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- 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 16 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\86e04aa7c1b0e77e6c1d8da16384b762e594b13e3394d534e57c2d5427a69416.exe"C:\Users\Admin\AppData\Local\Temp\86e04aa7c1b0e77e6c1d8da16384b762e594b13e3394d534e57c2d5427a69416.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\katDB8B.tmpC:\Users\Admin\AppData\Local\Temp\katDB8B.tmp2⤵
- Checks computer location settings
- Executes dropped EXE
- 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 & del /f /q "C:\Users\Admin\AppData\Local\Temp\katDB8B.tmp" & rd /s /q "C:\ProgramData\KECGDBFCBKFI" & 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=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4132,i,3144109701624127473,12586215149656995128,262144 --variations-seed-version --mojo-platform-channel-handle=2536 /prefetch:81⤵
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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 --field-trial-handle=3532,i,3144109701624127473,12586215149656995128,262144 --variations-seed-version --mojo-platform-channel-handle=3452 /prefetch:31⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
SCT Auditing Pending Reports
Sdch Dictionaries
katDB8B.tmp
memory/2596-1-0x0000000002B50000-0x0000000002C60000-memory.dmp
memory/2596-9-0x0000000000400000-0x0000000000629000-memory.dmp
memory/2596-0-0x00000000023D0000-0x00000000023D1000-memory.dmp
memory/4472-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4472-41-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4472-21-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4472-23-0x000000001B810000-0x000000001BA6F000-memory.dmp
memory/4472-31-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4472-32-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4472-40-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4472-20-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4472-57-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4472-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4472-64-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4472-75-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4472-76-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4472-77-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4472-4-0x0000000000400000-0x0000000000648000-memory.dmp