Analysis
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max time kernel
154s -
max time network
160s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
29-08-2021 07:02
Static task
static1
Behavioral task
behavioral1
Sample
Invoice5697484.js
Resource
win7v20210408
Behavioral task
behavioral2
Sample
Invoice5697484.js
Resource
win10v20210408
General
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Target
Invoice5697484.js
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Size
200KB
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MD5
f8f5bed73850632ff591989c5b88f9ee
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SHA1
ce9066586bf44f0e77243ebdd6d2ce109cf7bd7a
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SHA256
ce199d986d0d04279edd245f3a0fe115c7c680a214d73feed8a8451b7b7feb94
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SHA512
72be43f9ce219a02fc9ee7395867e91f9b175fffa3cf6c69800d5a8ab3e7617bf22e56fa5d1506bfc5b81d303f86c4be278debaad472e7a7bd41e10a0b31a9a9
Malware Config
Signatures
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Blocklisted process makes network request 17 IoCs
Processes:
WScript.exeflow pid process 7 1988 WScript.exe 8 1988 WScript.exe 9 1988 WScript.exe 11 1988 WScript.exe 12 1988 WScript.exe 13 1988 WScript.exe 15 1988 WScript.exe 16 1988 WScript.exe 17 1988 WScript.exe 19 1988 WScript.exe 20 1988 WScript.exe 21 1988 WScript.exe 23 1988 WScript.exe 24 1988 WScript.exe 25 1988 WScript.exe 27 1988 WScript.exe 28 1988 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\paCczCKasj.js WScript.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\paCczCKasj.js WScript.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
WScript.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\paCczCKasj.js\"" WScript.exe Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run WScript.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1372 524 WerFault.exe javaw.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
WerFault.exepid process 1372 WerFault.exe 1372 WerFault.exe 1372 WerFault.exe 1372 WerFault.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
WerFault.exepid process 1372 WerFault.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
WerFault.exedescription pid process Token: SeDebugPrivilege 1372 WerFault.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
wscript.exejavaw.exedescription pid process target process PID 1816 wrote to memory of 1988 1816 wscript.exe WScript.exe PID 1816 wrote to memory of 1988 1816 wscript.exe WScript.exe PID 1816 wrote to memory of 1988 1816 wscript.exe WScript.exe PID 1816 wrote to memory of 524 1816 wscript.exe javaw.exe PID 1816 wrote to memory of 524 1816 wscript.exe javaw.exe PID 1816 wrote to memory of 524 1816 wscript.exe javaw.exe PID 524 wrote to memory of 1372 524 javaw.exe WerFault.exe PID 524 wrote to memory of 1372 524 javaw.exe WerFault.exe PID 524 wrote to memory of 1372 524 javaw.exe WerFault.exe
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\Invoice5697484.js1⤵
- Suspicious use of WriteProcessMemory
PID:1816 -
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\paCczCKasj.js"2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1988 -
C:\Program Files\Java\jre7\bin\javaw.exe"C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\ypykzevx.txt"2⤵
- Suspicious use of WriteProcessMemory
PID:524 -
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 524 -s 1403⤵
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1372
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\paCczCKasj.jsMD5
73cccf2fad42bfd86b4a218c256e3fd7
SHA1f3ff6f9f588f7f8a725e258e984e128f580f28ea
SHA256495768f61cf6a338ca8e50e5f453a4ce6af19fd5881b3e848cb7741564c8ca57
SHA5129b86af50aeb1ede45103318d51e55c97c90b4a9aec33e916824c910965f2abb777f8a4d805ad44e4bd4ff92503b7c2f054b7c3b368e26af901a10c48160d9cc5
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C:\Users\Admin\AppData\Roaming\ypykzevx.txtMD5
d586663f3ff01f6ccddc890a9013aad6
SHA14ed9f24d7eeda73c96fef0128d991cfab005e0f8
SHA256a32832b7da66a6c36a28bc5f2d49b70a555980032d4d0f823cf514089e226b59
SHA512a1b8c0336ee6c8323329ba1c4a892943e238c1dbad15d78bdf5ae4fc089b397c4dce4770dfe03752cddf52819b62106cbb1a960ebaa0c4125df01a42846ebb98
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memory/524-63-0x0000000000000000-mapping.dmp
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memory/1372-66-0x0000000000000000-mapping.dmp
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memory/1372-68-0x0000000001B40000-0x0000000001B41000-memory.dmpFilesize
4KB
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memory/1816-60-0x000007FEFB7B1000-0x000007FEFB7B3000-memory.dmpFilesize
8KB
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memory/1988-61-0x0000000000000000-mapping.dmp