Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
15-04-2024 14:17
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
f141cf456f6de8a05a78bfa38c0fe306_JaffaCakes118.dll
Resource
win7-20240221-en
3 signatures
150 seconds
General
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Target
f141cf456f6de8a05a78bfa38c0fe306_JaffaCakes118.dll
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Size
640KB
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MD5
f141cf456f6de8a05a78bfa38c0fe306
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SHA1
aecbb61a0c505f1986fa06998e67c08edaecdf7c
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SHA256
36dd99327f17f6d34130b3f1d1ee83c04d7c2e5f0332049dba01bc6eb05da957
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SHA512
3c942c5cb4b26db9cba1ad9ce158aa9b5b89cb1c0353a01ef2baee1cb35002bf55a5b6e9f501ee94690ebe5619891fd1a1dfb7e8734da3cc78f2112e29a5b536
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SSDEEP
12288:3kdtYzsZDM2fjYiV/UzxoyS7nUmsn7lKwJhw2tePm:0dGzs/0kwolUf7lKQhwA+
Malware Config
Signatures
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Installs/modifies Browser Helper Object 2 TTPs 1 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\{CC01FC6C-D9B7-2A58-C85B-8ADA65FC8F2F} regsvr32.exe -
Modifies registry class 11 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-D9B7-2A58-C85B-8ADA65FC8F2F}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-D9B7-2A58-C85B-8ADA65FC8F2F}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-D9B7-2A58-C85B-8ADA65FC8F2F}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f141cf456f6de8a05a78bfa38c0fe306_JaffaCakes118.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\f141cf456f6de8a05a78bfa38c0fe306_JaffaCakes118.brm inc regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\f141cf456f6de8a05a78bfa38c0fe306_JaffaCakes118.brm inc\ = "brm inc" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\f141cf456f6de8a05a78bfa38c0fe306_JaffaCakes118.brm inc\Clsid regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\f141cf456f6de8a05a78bfa38c0fe306_JaffaCakes118.brm inc\Clsid\ = "{CC01FC6C-D9B7-2A58-C85B-8ADA65FC8F2F}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-D9B7-2A58-C85B-8ADA65FC8F2F}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-D9B7-2A58-C85B-8ADA65FC8F2F} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-D9B7-2A58-C85B-8ADA65FC8F2F}\ = "brm inc" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-D9B7-2A58-C85B-8ADA65FC8F2F}\ProgID\ = "f141cf456f6de8a05a78bfa38c0fe306_JaffaCakes118.brm inc" regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3584 wrote to memory of 2580 3584 regsvr32.exe 87 PID 3584 wrote to memory of 2580 3584 regsvr32.exe 87 PID 3584 wrote to memory of 2580 3584 regsvr32.exe 87
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\f141cf456f6de8a05a78bfa38c0fe306_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:3584 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\f141cf456f6de8a05a78bfa38c0fe306_JaffaCakes118.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2580
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