Analysis
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max time kernel
105s -
max time network
160s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
27-08-2021 18:58
Static task
static1
Behavioral task
behavioral1
Sample
#W0091.js
Resource
win7v20210410
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
#W0091.js
Resource
win10v20210408
windows10_x64
0 signatures
0 seconds
General
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Target
#W0091.js
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Size
12KB
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MD5
d9cf0592d6515534cb8efa5b63cfae5b
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SHA1
93764956ad2a38d3f70dde3ac0410b367bb8a92b
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SHA256
ecb06a64c672927554eeb66d6b0552a147e35eb85a30dadf28d4a2f92d8cb45d
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SHA512
e739a973e401bd3f96721a18fa1dbb5827e63365c4dacc46c7017adc0f6c93cc82b1c0d9fa71726b8e77b6fe1bdad4863d7ba2b4b71741fd001ce912557673f3
Score
10/10
Malware Config
Signatures
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Blocklisted process makes network request 1 IoCs
Processes:
wscript.exeflow pid process 6 992 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\#W0091.js wscript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\#W0091.js wscript.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
wscript.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run wscript.exe Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\VXBM5F7PI1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\#W0091.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 992 wrote to memory of 3924 992 wscript.exe schtasks.exe PID 992 wrote to memory of 3924 992 wscript.exe schtasks.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\#W0091.js1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:992 -
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\#W0091.js2⤵
- Creates scheduled task(s)
PID:3924
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/3924-114-0x0000000000000000-mapping.dmp