Analysis
- max time kernel
89s - max time network
94s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
09/06/2024, 07:07
General
- Target ba5732006f5b79e394238c8af7b9f1bd7c0e7ce415ea640d8b717a2ec47ce289.exe
- Size 1.9MB
- Sample240609-hxtlfagb35
- SHA256 ba5732006f5b79e394238c8af7b9f1bd7c0e7ce415ea640d8b717a2ec47ce289
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 8 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 2 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\ba5732006f5b79e394238c8af7b9f1bd7c0e7ce415ea640d8b717a2ec47ce289.exe"C:\Users\Admin\AppData\Local\Temp\ba5732006f5b79e394238c8af7b9f1bd7c0e7ce415ea640d8b717a2ec47ce289.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\kat7976.tmpC:\Users\Admin\AppData\Local\Temp\kat7976.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
kat7976.tmp
memory/1832-8-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1832-10-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1832-4-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1832-15-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1832-16-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1832-19-0x000000001B840000-0x000000001BA9F000-memory.dmp
memory/1832-33-0x0000000000400000-0x0000000000648000-memory.dmp
memory/1832-34-0x0000000000400000-0x0000000000648000-memory.dmp
memory/4016-0-0x0000000002340000-0x0000000002341000-memory.dmp
memory/4016-1-0x0000000002BD0000-0x0000000002D33000-memory.dmp
memory/4016-9-0x0000000000400000-0x00000000005EE000-memory.dmp