Analysis
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max time kernel
154s -
max time network
147s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
05-10-2021 14:44
Static task
static1
Behavioral task
behavioral1
Sample
YUEOPInvoiceCopy.js
Resource
win7-en-20210920
Behavioral task
behavioral2
Sample
YUEOPInvoiceCopy.js
Resource
win10v20210408
General
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Target
YUEOPInvoiceCopy.js
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Size
12KB
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MD5
13cbbf285a8353dea38b24e1e1472c29
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SHA1
d5f98537c95a00a6fbb9db349a1567fc2ac74cb9
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SHA256
6ecf7599637e51186edb088b0b39b592676a6c61c5917ee5c58a64b2ffed0be7
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SHA512
41ccc979a7dc9f9bd444ec3c66b5979f9b02945238d5670f1c6bac4fac1a11153327ed025e5c7046cfd72ec5b0466d0a806bf9eeb20b7966102babea1774e621
Malware Config
Signatures
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Blocklisted process makes network request 1 IoCs
Processes:
wscript.exeflow pid process 2 604 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\YUEOPInvoiceCopy.js wscript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\YUEOPInvoiceCopy.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\AAHTJLXP64 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\YUEOPInvoiceCopy.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 604 wrote to memory of 508 604 wscript.exe schtasks.exe PID 604 wrote to memory of 508 604 wscript.exe schtasks.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\YUEOPInvoiceCopy.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\YUEOPInvoiceCopy.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/508-114-0x0000000000000000-mapping.dmp