Analysis
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max time kernel
107s -
max time network
110s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
29-04-2021 19:05
Static task
static1
Behavioral task
behavioral1
Sample
Invoice B2023B.js
Resource
win7v20210408
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
Invoice B2023B.js
Resource
win10v20210410
windows10_x64
0 signatures
0 seconds
General
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Target
Invoice B2023B.js
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Size
3KB
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MD5
0d155eb2cdaf42d5f145343cb3dd09ad
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SHA1
d9499f3e148c1426961adcccb42f2f1c89d9c6fb
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SHA256
a7aea824310617598f8685bdb14a01fd962d3cb7a80227f434025540f6f43a2d
-
SHA512
76881dc768bba5bae6edfea142986b48022e4c67e03fc8ab9cc1599fe81b2d14b429682990ff7c9885a6e797c01c6d8f91f86220e2361f992375fd4552eaba87
Score
10/10
Malware Config
Signatures
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Blocklisted process makes network request 1 IoCs
Processes:
wscript.exeflow pid process 7 3992 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 B2023B.js wscript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Invoice B2023B.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\CWI41JI7HU = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Invoice B2023B.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 3992 wrote to memory of 2004 3992 wscript.exe schtasks.exe PID 3992 wrote to memory of 2004 3992 wscript.exe schtasks.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe "C:\Users\Admin\AppData\Local\Temp\Invoice B2023B.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 B2023B.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/2004-114-0x0000000000000000-mapping.dmp