Analysis
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max time kernel
146s -
max time network
184s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
16-06-2021 10:02
Static task
static1
Behavioral task
behavioral1
Sample
Invoice #3381.js
Resource
win7v20210408
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
Invoice #3381.js
Resource
win10v20210410
windows10_x64
0 signatures
0 seconds
General
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Target
Invoice #3381.js
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Size
3KB
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MD5
abb769d734f8212d96ea432da12cbc15
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SHA1
186d2abc93687bfa9036319641b7fa6f3245b798
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SHA256
0b471b1080ff4600483e4459e88aae2bb54f4ba84416b614d58f72bfa24b35a9
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SHA512
308e2ecadeeea21e46fa2eacfa71dd46323bcd00391d4d92030ae9775d0c8497098bfd14423d0c2e53b85f3420da5f5a069c79dbf23e103f45441bea236f37ff
Score
10/10
Malware Config
Signatures
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Blocklisted process makes network request 1 IoCs
Processes:
wscript.exeflow pid process 6 1936 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\Invoice #3381.js wscript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Invoice #3381.js wscript.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
wscript.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run wscript.exe Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\EX2WNAPNLF = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Invoice #3381.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 3 IoCs
Processes:
wscript.exedescription pid process target process PID 1936 wrote to memory of 328 1936 wscript.exe schtasks.exe PID 1936 wrote to memory of 328 1936 wscript.exe schtasks.exe PID 1936 wrote to memory of 328 1936 wscript.exe schtasks.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe "C:\Users\Admin\AppData\Local\Temp\Invoice #3381.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\Invoice #3381.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/328-60-0x0000000000000000-mapping.dmp