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Analysis
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max time kernel
117s -
max time network
117s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
20/06/2024, 09:15
Static task
static1
Behavioral task
behavioral1
Sample
04a2ff9b9480527f2d75cc7ec0ab561d_JaffaCakes118.dll
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
04a2ff9b9480527f2d75cc7ec0ab561d_JaffaCakes118.dll
Resource
win10v2004-20240226-en
General
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Target
04a2ff9b9480527f2d75cc7ec0ab561d_JaffaCakes118.dll
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Size
162KB
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MD5
04a2ff9b9480527f2d75cc7ec0ab561d
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SHA1
7004685e9228be2c0fbee7cdf82e50b36cb2518c
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SHA256
06b46781988b9f1ca1cd10de5f2e7ae6586646b2c6d1a274f07d5267f40fa171
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SHA512
541620835718b16fa31254529440eab7139c03841b07e31c6d038a74010c2b514493c73e71b5f4850c60d704d6c65f8e50afffc88408882d5a8582864508e4bb
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SSDEEP
3072:c3oCj9q5306ZkNQLTFfdXlp2L7+Ise4xAAQeKz+yMv5TtJ:Aou9O39hL5fDpnBxAAFHdtJ
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\{77e20281-0fb7-4353-ebdf-a5150a61f43c} = "C:\\Windows\\System32\\Rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\04a2ff9b9480527f2d75cc7ec0ab561d_JaffaCakes118.dll\" DllStub" 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\{15095198-8800-b17f-75e8-fec0bdb788bb} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{15095198-8800-b17f-75e8-fec0bdb788bb}\NoExplorer = "\"\"" regsvr32.exe -
Modifies registry class 5 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{15095198-8800-b17f-75e8-fec0bdb788bb}\InProcServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{15095198-8800-b17f-75e8-fec0bdb788bb} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{15095198-8800-b17f-75e8-fec0bdb788bb}\ = "cpmsky browser enhancer" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{15095198-8800-b17f-75e8-fec0bdb788bb}\InProcServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{15095198-8800-b17f-75e8-fec0bdb788bb}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\04a2ff9b9480527f2d75cc7ec0ab561d_JaffaCakes118.dll" regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1644 wrote to memory of 1872 1644 regsvr32.exe 28 PID 1644 wrote to memory of 1872 1644 regsvr32.exe 28 PID 1644 wrote to memory of 1872 1644 regsvr32.exe 28 PID 1644 wrote to memory of 1872 1644 regsvr32.exe 28 PID 1644 wrote to memory of 1872 1644 regsvr32.exe 28 PID 1644 wrote to memory of 1872 1644 regsvr32.exe 28 PID 1644 wrote to memory of 1872 1644 regsvr32.exe 28
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\04a2ff9b9480527f2d75cc7ec0ab561d_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1644 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\04a2ff9b9480527f2d75cc7ec0ab561d_JaffaCakes118.dll2⤵
- Adds Run key to start application
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:1872
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