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Analysis
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max time kernel
119s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
23/06/2024, 22:47
Static task
static1
Behavioral task
behavioral1
Sample
03537e44e32e6f1abb6511c2a9b19f7b_JaffaCakes118.dll
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
03537e44e32e6f1abb6511c2a9b19f7b_JaffaCakes118.dll
Resource
win10v2004-20240611-en
General
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Target
03537e44e32e6f1abb6511c2a9b19f7b_JaffaCakes118.dll
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Size
236KB
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MD5
03537e44e32e6f1abb6511c2a9b19f7b
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SHA1
c1d63650cfa3a1a96da23027d9a8bff369e3cfa5
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SHA256
99e84efecef136106ece0b3519ec602a532b5bf2fee708e22a43c8fc27eca366
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SHA512
ecd112504f3e5bf93cfa149fd9cd6d335c1a1f982c38d3150c234cd9e190f14dcf157e71c8f29e66d5e46388fbdd649288fa65b45d37ebc38f0d1cae5960ca1e
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SSDEEP
1536:1dKaTHN2ymZ0ofa5uQm4V7HG8ldINh+RhFtFftCgpcGO5lPf/XG8GmGwktb+:1Y4tIQG8XAmbFfaGc1fawk1+
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\gyk = "{a0e167c6-2869-7dbe-397a-2869ef4e7285}" rundll32.exe -
Loads dropped DLL 1 IoCs
pid Process 1652 rundll32.exe -
Drops file in System32 directory 4 IoCs
description ioc Process File created C:\Windows\SysWOW64\tlx.dll rundll32.exe File opened for modification C:\Windows\SysWOW64\tlx.dll rundll32.exe File created C:\Windows\SysWOW64\btf.dll rundll32.exe File opened for modification C:\Windows\SysWOW64\btf.dll rundll32.exe -
Modifies registry class 5 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a0e167c6-2869-7dbe-397a-2869ef4e7285}\InprocServer32\ = "C:\\Windows\\SysWow64\\btf.dll" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a0e167c6-2869-7dbe-397a-2869ef4e7285}\InprocServer32\ThreadingModel = "Apartment" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a0e167c6-2869-7dbe-397a-2869ef4e7285} rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a0e167c6-2869-7dbe-397a-2869ef4e7285}\ rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{a0e167c6-2869-7dbe-397a-2869ef4e7285}\InprocServer32 rundll32.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1652 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1652 rundll32.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1652 rundll32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2120 wrote to memory of 1652 2120 rundll32.exe 28 PID 2120 wrote to memory of 1652 2120 rundll32.exe 28 PID 2120 wrote to memory of 1652 2120 rundll32.exe 28 PID 2120 wrote to memory of 1652 2120 rundll32.exe 28 PID 2120 wrote to memory of 1652 2120 rundll32.exe 28 PID 2120 wrote to memory of 1652 2120 rundll32.exe 28 PID 2120 wrote to memory of 1652 2120 rundll32.exe 28
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\03537e44e32e6f1abb6511c2a9b19f7b_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2120 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\03537e44e32e6f1abb6511c2a9b19f7b_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:1652
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
625KB
MD595e2376b3323f062eb562b8586d0f14a
SHA1453d4c3bf4a489433b593420a37bbffb7749875a
SHA256bd3fa8750123d00aa0967fba44372c46ea002681da9c9b77a4f9261553e26017
SHA512b898603d07a49237e4dfc6872d5caa7616bae1258926f10e66c4d3f0d81cccefac1e844395b65bb1f308fbc022061b52e51f60658d0a546c04b365b3428cc87d