Analysis
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max time kernel
291s -
max time network
299s -
platform
windows10_x64 -
resource
win10-en-20210920 -
submitted
12-10-2021 16:31
Static task
static1
Behavioral task
behavioral1
Sample
C0083_Invoice_Copy.js
Resource
win7v20210408
Behavioral task
behavioral2
Sample
C0083_Invoice_Copy.js
Resource
win10-en-20210920
General
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Target
C0083_Invoice_Copy.js
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Size
12KB
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MD5
7db9fe7b332f94b2c50ce2761b40abfc
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SHA1
277de0d07f6080d096fe3b2ece7c99ee3167f3ed
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SHA256
9af04e365ed1f2e0ea04dc71729f0e3341f0f981405c9f3ddd6d6d7b693fb733
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SHA512
b735fc8a216ba8833ebaa00d7f67969645f78a572d5c92052de36e5433d0842ed73e481aec3a58484d7a3ee36033fe83cfaa9565b70472b6b9247a4d7d640c1b
Malware Config
Extracted
vjw0rm
http://mchristopherr83.duckdns.org:7922
Signatures
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Blocklisted process makes network request 1 IoCs
Processes:
wscript.exeflow pid process 9 2072 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\C0083_Invoice_Copy.js wscript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\C0083_Invoice_Copy.js wscript.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
wscript.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run wscript.exe Set value (str) \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\JX0T7EQ31M = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\C0083_Invoice_Copy.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 2072 wrote to memory of 2500 2072 wscript.exe schtasks.exe PID 2072 wrote to memory of 2500 2072 wscript.exe schtasks.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\C0083_Invoice_Copy.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\C0083_Invoice_Copy.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/2500-115-0x0000000000000000-mapping.dmp