Analysis
- max time kernel
129s - max time network
148s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
07/06/2024, 01:01
General
- Target 02eac2d8c04bfbabf5285b5fb1badf755e16ae50899f6bd7b788654e85a20613.exe
- Size 421KB
- Sample240607-bc8rasfg97
- SHA256 02eac2d8c04bfbabf5285b5fb1badf755e16ae50899f6bd7b788654e85a20613
Malware Config
Extracted
-
stealc
Extracted
-
vidar
-
https://t.me/r8z0l
-
https://steamcommunity.com/profiles/76561199698764354
-
user_agent
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0
Signatures
- Detect Vidar Stealer 9 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. 6 IoCs
- Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 6 IoCs
- Detects Windows executables referencing non-Windows User-Agents 9 IoCs
- Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 6 IoCs
- Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 9 IoCs
- Detects executables containing potential Windows Defender anti-emulation checks 9 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 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.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\02eac2d8c04bfbabf5285b5fb1badf755e16ae50899f6bd7b788654e85a20613.exe"C:\Users\Admin\AppData\Local\Temp\02eac2d8c04bfbabf5285b5fb1badf755e16ae50899f6bd7b788654e85a20613.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
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 SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1508-37-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1508-2-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1508-6-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1508-7-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1508-19-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1508-20-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1508-22-0x00000000194D0000-0x000000001972F000-memory.dmp
memory/1508-38-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1508-54-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1508-55-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4920-3-0x0000000000600000-0x0000000000601000-memory.dmp
memory/4920-1-0x0000000000600000-0x0000000000601000-memory.dmp
memory/4920-0-0x0000000000600000-0x0000000000601000-memory.dmp