Analysis
- max time kernel
150s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
13/02/2024, 06:47
General
- Target 98bfda284980229df13f55a07d227df9.exe
- Size 373KB
- Sample240213-hke8aabf81
- SHA256 08a363463e690d21771f9cd9f1deafbf39106a389736e33fb2488b51e33a0c24
Malware Config
Signatures
- Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks processor information in registry 2 TTPs 8 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 2 IoCs
- Modifies registry class 1 IoCs
- Suspicious use of AdjustPrivilegeToken 48 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\98bfda284980229df13f55a07d227df9.exe"C:\Users\Admin\AppData\Local\Temp\98bfda284980229df13f55a07d227df9.exe"1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- Checks processor information in registry
- Enumerates system info in registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\spygen\winmaster.exe"C:\spygen\winmaster.exe"2⤵
- Checks BIOS information in registry
- Executes dropped EXE
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
winmaster.exe
memory/1004-0-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/1004-1-0x00000000023A0000-0x00000000023A1000-memory.dmp
memory/1004-35-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-42-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-45-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-38-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-39-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-40-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-41-0x0000000002240000-0x0000000002241000-memory.dmp
memory/3940-36-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-43-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-44-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-37-0x0000000002240000-0x0000000002241000-memory.dmp
memory/3940-46-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-47-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-48-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-49-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-50-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-51-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-52-0x0000000000400000-0x00000000004FBE40-memory.dmp
memory/3940-53-0x0000000000400000-0x00000000004FBE40-memory.dmp