Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20230221-en -
resource tags
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submitted
09-06-2023 20:29
General
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Target
734861f4226848bb53bcb7fbf84766128d04a251574ffe039f310050a2b8340c.vbs.js
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Size
95.4MB
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MD5
908c8875c901cb573703ee5ca873d559
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SHA1
375c29372950e7ac683827c811b7bacdfbdc3882
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SHA256
734861f4226848bb53bcb7fbf84766128d04a251574ffe039f310050a2b8340c
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SHA512
df29cb9d8ac1fa6c4a88f166f62e59c2715c87221d19ec84786e219b6a98d9a5cf3ac277d0e2f0c6e8bdf6c355f314240c3911866ca3fda81cab27d0e7166ba8
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SSDEEP
192:8ZVh7aiI1rk2H2ZSm35+vhOJzLq8MyOY:mVciI1S4YZPMVY
Malware Config
Extracted
vjw0rm
http://js8100.duckdns.org:8100
Signatures
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Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
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Blocklisted process makes network request 1 IoCs
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Drops startup file 1 IoCs
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Adds Run key to start application 2 TTPs 2 IoCs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious use of WriteProcessMemory 2 IoCs
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Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\734861f4226848bb53bcb7fbf84766128d04a251574ffe039f310050a2b8340c.vbs.js1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\734861f4226848bb53bcb7fbf84766128d04a251574ffe039f310050a2b8340c.vbs.js2⤵
- Creates scheduled task(s)
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