Analysis
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max time kernel
148s -
max time network
151s -
platform
windows10_x64 -
resource
win10v20210410 -
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 8 3768 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-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run wscript.exe Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\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 2 IoCs
Processes:
wscript.exedescription pid process target process PID 3768 wrote to memory of 1552 3768 wscript.exe schtasks.exe PID 3768 wrote to memory of 1552 3768 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/1552-114-0x0000000000000000-mapping.dmp