Analysis
- max time kernel
144s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
22/12/2023, 08:35
General
- Target 7db6d9cd3eb60b8e7296921e4d8d959e.js
- Size 225KB
- Sample231222-kg2m8adeen
- SHA256 05c63cde94e8cf070a1d5fe7e1d14cf4e8f37da01274224dcbe67a136a4f8d77
Malware Config
Signatures
- Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Drops startup file 2 IoCs
- Modifies file permissions 1 TTPs 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).
- Modifies registry class 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\7db6d9cd3eb60b8e7296921e4d8d959e.js1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\HjFFOyQEiR.js"2⤵
- Drops startup file
- Adds Run key to start application
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C:\Program Files\Java\jre-1.8\bin\javaw.exe"C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\hhtkphfwqo.txt"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\icacls.exeC:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M3⤵
- Modifies file permissions
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
3903daac9bc4a3b7.timestamp
HjFFOyQEiR.js
hhtkphfwqo.txt
memory/2328-53-0x0000020D0D7F0000-0x0000020D0E7F0000-memory.dmp
memory/2328-23-0x0000020D0BFD0000-0x0000020D0BFD1000-memory.dmp
memory/2328-25-0x0000020D0D7F0000-0x0000020D0E7F0000-memory.dmp
memory/2328-34-0x0000020D0BFD0000-0x0000020D0BFD1000-memory.dmp
memory/2328-38-0x0000020D0D7F0000-0x0000020D0E7F0000-memory.dmp
memory/2328-11-0x0000020D0D7F0000-0x0000020D0E7F0000-memory.dmp
memory/2328-58-0x0000020D0D7F0000-0x0000020D0E7F0000-memory.dmp
memory/2328-61-0x0000020D0BFD0000-0x0000020D0BFD1000-memory.dmp
memory/2328-64-0x0000020D0D7F0000-0x0000020D0E7F0000-memory.dmp
memory/2328-68-0x0000020D0BFD0000-0x0000020D0BFD1000-memory.dmp
memory/2328-88-0x0000020D0BFD0000-0x0000020D0BFD1000-memory.dmp
memory/2328-118-0x0000020D0D7F0000-0x0000020D0E7F0000-memory.dmp
memory/2328-124-0x0000020D0D7F0000-0x0000020D0E7F0000-memory.dmp