Analysis
- max time kernel
150s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
08/09/2026, 08:50
General
- Target 67157f63006fcaa43327e65465fa1eca7007fc2e982d256269a3d917011f13ae.exe
- Size 876KB
- Sample260908-krvmnaec94
- SHA256 67157f63006fcaa43327e65465fa1eca7007fc2e982d256269a3d917011f13ae
Malware Config
Signatures
- Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Adds Run key to start application 2 TTPs 3 IoCs
- Drops file in Windows directory 6 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\67157f63006fcaa43327e65465fa1eca7007fc2e982d256269a3d917011f13ae.exe"C:\Users\Admin\AppData\Local\Temp\67157f63006fcaa43327e65465fa1eca7007fc2e982d256269a3d917011f13ae.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
-
C:\windows\tsay.exeC:\windows\tsay.exe1⤵
- Checks computer location settings
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\windows\ttry.exe"C:\windows\ttry.exe"2⤵
- Modifies visibility of file extensions in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
-
Network
MITRE ATT&CK Enterprise v16
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Modify Registry
2Replay Monitor
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Downloads
tsay.exe
memory/2660-21-0x0000000000400000-0x0000000000477000-memory.dmp
memory/2660-6-0x0000000000400000-0x0000000000477000-memory.dmp
memory/2660-8-0x0000000000400000-0x0000000000477000-memory.dmp
memory/2660-9-0x0000000000400000-0x0000000000477000-memory.dmp
memory/3508-18-0x0000000000400000-0x0000000000477000-memory.dmp
memory/3508-19-0x0000000000400000-0x0000000000477000-memory.dmp
memory/3508-23-0x0000000000400000-0x0000000000477000-memory.dmp
memory/3508-24-0x0000000000400000-0x0000000000477000-memory.dmp
memory/3508-35-0x0000000000400000-0x0000000000477000-memory.dmp
memory/3940-2-0x0000000000453000-0x0000000000454000-memory.dmp
memory/3940-4-0x0000000000400000-0x0000000000477000-memory.dmp
memory/3940-1-0x00000000021E0000-0x00000000021E1000-memory.dmp
memory/3940-0-0x0000000000400000-0x0000000000477000-memory.dmp