Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
29/06/2024, 03:41
General
- Target 6a605bfcf8816ab1a6e21238fcb55747.exe
- Size 2.2MB
- Sample240629-d8rh1azfma
- SHA256 07be352dde09851de71ce7c763537e2b5c567e52fd161304cbaa54895dcd5c8f
Malware Config
Extracted
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vidar
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https://t.me/g067n
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https://steamcommunity.com/profiles/76561199707802586
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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 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 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 20 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\6a605bfcf8816ab1a6e21238fcb55747.exe"C:\Users\Admin\AppData\Local\Temp\6a605bfcf8816ab1a6e21238fcb55747.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\katF7C.tmpC:\Users\Admin\AppData\Local\Temp\katF7C.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\katF7C.tmp" & rd /s /q "C:\ProgramData\IJDGCAEBFIIE" & 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=3248 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --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=3932 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
SCT Auditing Pending Reports
Sdch Dictionaries
katF7C.tmp
memory/1916-65-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1916-42-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1916-79-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1916-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1916-22-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1916-23-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1916-24-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1916-26-0x0000000024D10000-0x0000000024F6F000-memory.dmp
memory/1916-41-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1916-9-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1916-58-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1916-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1916-78-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1916-76-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1916-77-0x0000000000400000-0x0000000000648000-memory.dmp
memory/2828-0-0x00000000023D0000-0x00000000023D1000-memory.dmp
memory/2828-8-0x0000000000400000-0x0000000000635000-memory.dmp
memory/2828-1-0x0000000004150000-0x0000000004260000-memory.dmp