Analysis
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max time kernel
137s -
max time network
136s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
14-12-2021 06:59
Static task
static1
Behavioral task
behavioral1
Sample
#00958.JS
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
#00958.JS
Resource
win10-en-20211208
General
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Target
#00958.JS
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Size
66KB
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MD5
abc0656ab4c966d440a154fd0174684f
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SHA1
d8a46b049aaf91a52871b9b63317502948c3840c
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SHA256
b6977bce6d9b944310f27e7febb8dfb8315ab7b589181d05a46c86ad6793fb18
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SHA512
5e8cbd3f788f5acba2cd4babb054bbbbef669d8b9ec4424537200cf4d03be7e2488f2e77bf0b97ff8c8dc23e112f2e2835173db9e8e5bd0e3c53bc5f29af07c7
Malware Config
Extracted
vjw0rm
http://decebermoney.duckdns.org:8022
Signatures
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Blocklisted process makes network request 1 IoCs
Processes:
WScript.exeflow pid process 10 1052 WScript.exe -
Drops startup file 2 IoCs
Processes:
WScript.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\#00958.JS WScript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\#00958.JS WScript.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
WScript.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run\7XZCXIM5XX = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\#00958.JS\"" WScript.exe Key created \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run WScript.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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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
Processes:
WScript.exedescription pid process target process PID 1052 wrote to memory of 4008 1052 WScript.exe schtasks.exe PID 1052 wrote to memory of 4008 1052 WScript.exe schtasks.exe
Processes
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C:\Windows\System32\WScript.exeC:\Windows\System32\WScript.exe "C:\Users\Admin\AppData\Local\Temp\#00958.JS"1⤵
- Blocklisted process makes network request
- 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\Local\Temp\#00958.JS2⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/4008-115-0x0000000000000000-mapping.dmp