Analysis
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max time kernel
140s -
max time network
146s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
17-12-2021 08:53
Static task
static1
Behavioral task
behavioral1
Sample
UW802KASIOPSDUW.js
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
UW802KASIOPSDUW.js
Resource
win10-en-20211208
General
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Target
UW802KASIOPSDUW.js
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Size
54KB
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MD5
299e8af9cce953ee2750818f7cea2563
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SHA1
a00478a0927d2b61d1693b6002e6c1a88abe8252
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SHA256
e051971136e18efd26174bd5641abfd2c687865c6790c9a9ea1582288b8f956b
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SHA512
226d841bcb3d598f961dbeaa19d57290fabcadf679210ed7ade3e8e5d805664e22c2ce16c9d252d67e8a5cc05c7b1f494c121c555f0c0ab5a6c4da8d3c315340
Malware Config
Extracted
vjw0rm
http://decebermoney.duckdns.org:8020
Signatures
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Blocklisted process makes network request 1 IoCs
Processes:
wscript.exeflow pid process 11 2876 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\UW802KASIOPSDUW.js wscript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\UW802KASIOPSDUW.js wscript.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
wscript.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Windows\CurrentVersion\Run wscript.exe Set value (str) \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Software\Microsoft\Windows\CurrentVersion\Run\E80VDBUI3I = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\UW802KASIOPSDUW.js\"" 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 2876 wrote to memory of 1372 2876 wscript.exe schtasks.exe PID 2876 wrote to memory of 1372 2876 wscript.exe schtasks.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\UW802KASIOPSDUW.js1⤵
- 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\UW802KASIOPSDUW.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/1372-115-0x0000000000000000-mapping.dmp