Analysis
- max time kernel
380s - max time network
617s - platform
windows10-1703_x64 - resource
win10-20220812-en - resource tags
arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system - submitted
17/01/2023, 18:49
Behavioral task
behavioral1
Sample
b.dll
Resource
win7-20221111-en
3 signatures
600 seconds
Behavioral task
behavioral2
Sample
b.dll
Resource
win10-20220812-en
2 signatures
600 seconds
General
- Target b.dll
- Size 60KB
- Sample230117-xgn4cada48
- SHA256 173b14b1b579add43d7434822a7513d175167c22a1cc50d8e84c63bcb9e5d572
- MD5 5359ac968f7cee07ee5b28e4f77e0a9b
- SHA1 4488d17610c128cf2caf2dd27dce5767c68a10b4
- SHA512 983db64d91d8e80899ad28b56087af8912943d2f7517db7cde9209c7d168460ba26050ce691a492e36e9a112416bce644414fa7d316594af90b3c3d1d2bb1cc3
- SSDEEP 768:hO4apg9TJD/UFPvh45g1WmxValWf5uJMj9TX8Tlpd76o1x6:hHT+4mjw4OdZx
- MD5 SHA1 SHA512 SSDEEP
Score
3/10
Malware Config
Signatures
- Program crash 3 IoCs
pid pid_target Process procid_target 2708 2404 WerFault.exe 65 4252 4984 WerFault.exe 73 4064 5032 WerFault.exe 74 - Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 4940 wrote to memory of 4984 4940 cmd.exe 73 PID 4940 wrote to memory of 4984 4940 cmd.exe 73 PID 4940 wrote to memory of 5032 4940 cmd.exe 74 PID 4940 wrote to memory of 5032 4940 cmd.exe 74
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\b.dll,#11⤵PID:2404
-
C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 2404 -s 2202⤵
- Program crash
PID:2708
-
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C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4940 -
C:\Windows\system32\regsvr32.exeregsvr32 b.dll2⤵PID:4984
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 4984 -s 3803⤵
- Program crash
PID:4252
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-
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C:\Windows\system32\regsvr32.exeregsvr32 /s b.dll2⤵PID:5032
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 5032 -s 3803⤵
- Program crash
PID:4064
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