Analysis
- max time kernel
149s - max time network
152s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20260130-en - resource tags
- submitted
25/03/2026, 14:36
General
- Target Woba.exe
- Size 2.1MB
- Sample260325-ryrmxabw8x
- SHA256 a0c4488b50fdd493a8652f2b5a89b7afaf0f7ea09021719d257aeeb0ed53e1e2
Score
10/10
Malware Config
Signatures
- CHStealer
CHStealer is a stealer written in C#.
- Chstealer family
- Detects CHStealer payload 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Woba.exe"C:\Users\Admin\AppData\Local\Temp\Woba.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/1612-0-0x0000000000BD0000-0x0000000000DE6000-memory.dmp
memory/1612-1-0x00000000056F0000-0x0000000005700000-memory.dmp
memory/5076-2-0x0000000000400000-0x0000000000442000-memory.dmp
memory/5076-4-0x00000000051E0000-0x00000000051F0000-memory.dmp
memory/5076-6-0x0000000005BB0000-0x0000000005C16000-memory.dmp
memory/5076-7-0x00000000051E0000-0x00000000051F0000-memory.dmp