Analysis
- max time kernel
195s - max time network
264s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
06/06/2024, 23:26
General
- Target 4064eb708aa0dfb0ed7c50128ff9a6e9f67d7d77636abd01c1afb093b30770e8.exe
- Size 1.8MB
- Sample240606-3e89dsef44
- SHA256 4064eb708aa0dfb0ed7c50128ff9a6e9f67d7d77636abd01c1afb093b30770e8
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 6 IoCs
- Stealc
Stealc is an infostealer written in C++.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- 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
- Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\4064eb708aa0dfb0ed7c50128ff9a6e9f67d7d77636abd01c1afb093b30770e8.exe"C:\Users\Admin\AppData\Local\Temp\4064eb708aa0dfb0ed7c50128ff9a6e9f67d7d77636abd01c1afb093b30770e8.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat758E.tmpC:\Users\Admin\AppData\Local\Temp\kat758E.tmp2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
kat758E.tmp
kat758E.tmp
memory/4376-17-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4376-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4376-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4376-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4376-16-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4376-19-0x000000001B6F0000-0x000000001B94F000-memory.dmp
memory/4376-34-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4376-35-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4700-9-0x0000000000400000-0x00000000005C8000-memory.dmp
memory/4700-2-0x0000000003E80000-0x0000000003FCB000-memory.dmp
memory/4700-0-0x00000000021E0000-0x00000000021E1000-memory.dmp