Analysis
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max time kernel
118s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
23-06-2024 01:56
Behavioral task
behavioral1
Sample
04d064ef9b6d23a8992ef9b12cd60c82_JaffaCakes118.dll
Resource
win7-20240508-en
4 signatures
150 seconds
Behavioral task
behavioral2
Sample
04d064ef9b6d23a8992ef9b12cd60c82_JaffaCakes118.dll
Resource
win10v2004-20240226-en
4 signatures
150 seconds
General
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Target
04d064ef9b6d23a8992ef9b12cd60c82_JaffaCakes118.dll
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Size
322KB
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MD5
04d064ef9b6d23a8992ef9b12cd60c82
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SHA1
9d5a387b0cea50f8f2065d6840525509ea9f45f8
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SHA256
c00c7fe84e11118f61c6bb84aa0c6ac76e018d9c505a51548cc540047c946413
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SHA512
2aa396328ff110e5a25c7d27915de5287e0f2dbafc74c6885775047868653b9bb5faf55f1c7e03491f40307438aad3fcd1079ba675193b6e725ac46bf76cd42d
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SSDEEP
6144:mbP6Z9CvhI966AGkAjOpoaY7onOIcIJZzjN7Za5f:eSZ92q6xGJOpqfI1JZ17Q
Score
6/10
Malware Config
Signatures
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\{9aad62e4-06b0-7305-b36c-9e2d23dba1c2} = "C:\\Windows\\System32\\Rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\04d064ef9b6d23a8992ef9b12cd60c82_JaffaCakes118.dll\" DllInit" regsvr32.exe -
Installs/modifies Browser Helper Object 2 TTPs 2 IoCs
BHOs are DLL modules which act as plugins for Internet Explorer.
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{660bf0c5-a3c4-519f-2de5-6ca10af8a2af} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{660bf0c5-a3c4-519f-2de5-6ca10af8a2af}\NoExplorer = "\"\"" regsvr32.exe -
Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{660bf0c5-a3c4-519f-2de5-6ca10af8a2af} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{660bf0c5-a3c4-519f-2de5-6ca10af8a2af}\ = "cpmsky browser optimizer" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{660bf0c5-a3c4-519f-2de5-6ca10af8a2af}\InProcServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{660bf0c5-a3c4-519f-2de5-6ca10af8a2af}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\04d064ef9b6d23a8992ef9b12cd60c82_JaffaCakes118.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{660bf0c5-a3c4-519f-2de5-6ca10af8a2af}\InProcServer32\ThreadingModel = "Apartment" regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1444 wrote to memory of 2996 1444 regsvr32.exe 28 PID 1444 wrote to memory of 2996 1444 regsvr32.exe 28 PID 1444 wrote to memory of 2996 1444 regsvr32.exe 28 PID 1444 wrote to memory of 2996 1444 regsvr32.exe 28 PID 1444 wrote to memory of 2996 1444 regsvr32.exe 28 PID 1444 wrote to memory of 2996 1444 regsvr32.exe 28 PID 1444 wrote to memory of 2996 1444 regsvr32.exe 28
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\04d064ef9b6d23a8992ef9b12cd60c82_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1444 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\04d064ef9b6d23a8992ef9b12cd60c82_JaffaCakes118.dll2⤵
- Adds Run key to start application
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2996
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