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Analysis
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max time kernel
147s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
24/06/2024, 07:36
Static task
static1
Behavioral task
behavioral1
Sample
07387d16621c17a68d3695d4fade8892_JaffaCakes118.dll
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
07387d16621c17a68d3695d4fade8892_JaffaCakes118.dll
Resource
win10v2004-20240508-en
General
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Target
07387d16621c17a68d3695d4fade8892_JaffaCakes118.dll
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Size
236KB
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MD5
07387d16621c17a68d3695d4fade8892
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SHA1
3fb4853997311d54baba46897b0b792ad5677aae
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SHA256
40940802a33f430a6782bbe26ee99f7bade77e5a90293c4e41cfe1ba23397c85
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SHA512
a077481b511ea006276252f9975fb5fa949fe29cd09ffb3952f2cf9c0720b3d9a5357ec892463e5c2269b8c80fac642d53f772e1c42b0ac935494f8e4b71b510
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SSDEEP
3072:SeqmgHwlaazN9U3J+P0wFp+bLrt2wkkIj:+Qj9U3jwO3rt5o
Malware Config
Signatures
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Adds autorun key to be loaded by Explorer.exe on startup 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\ShellServiceObjectDelayLoad\exkrralzw = "{6f817e59-e709-3c5e-f81a-e709f6d10d68}" rundll32.exe -
Loads dropped DLL 1 IoCs
pid Process 1180 rundll32.exe -
Drops file in System32 directory 4 IoCs
description ioc Process File created C:\Windows\SysWOW64\rkxeenymj.dll rundll32.exe File opened for modification C:\Windows\SysWOW64\rkxeenymj.dll rundll32.exe File created C:\Windows\SysWOW64\zsfmmvgur.dll rundll32.exe File opened for modification C:\Windows\SysWOW64\zsfmmvgur.dll rundll32.exe -
Modifies registry class 5 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6f817e59-e709-3c5e-f81a-e709f6d10d68}\ rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6f817e59-e709-3c5e-f81a-e709f6d10d68}\InprocServer32 rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6f817e59-e709-3c5e-f81a-e709f6d10d68}\InprocServer32\ = "C:\\Windows\\SysWow64\\zsfmmvgur.dll" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6f817e59-e709-3c5e-f81a-e709f6d10d68}\InprocServer32\ThreadingModel = "Apartment" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{6f817e59-e709-3c5e-f81a-e709f6d10d68} rundll32.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1180 rundll32.exe 1180 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1180 rundll32.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1180 rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1408 wrote to memory of 1180 1408 rundll32.exe 80 PID 1408 wrote to memory of 1180 1408 rundll32.exe 80 PID 1408 wrote to memory of 1180 1408 rundll32.exe 80
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\07387d16621c17a68d3695d4fade8892_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1408 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\07387d16621c17a68d3695d4fade8892_JaffaCakes118.dll,#12⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1180
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
478KB
MD5e99416267b61f52fa5ab994019efd359
SHA186d31eae707db7fe51d2556394fcf0e8e9f6b0fd
SHA256768c286674371564b5e6095edb56e0a4231f341be895da69cfccca5160029774
SHA5120a1c7579a9c787c2c1bef35f0660e72e74b42824e14ebea63b87ed25ddaf107e3746567bb431cab41a2f6719fad2c22d96e0715a1fe085d75805d7d66f7f05ae