Analysis
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max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
15-04-2024 13:49
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
f1355d1e00ebb8f7bc4cbbc6b173a346_JaffaCakes118.dll
Resource
win7-20240220-en
6 signatures
150 seconds
General
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Target
f1355d1e00ebb8f7bc4cbbc6b173a346_JaffaCakes118.dll
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Size
839KB
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MD5
f1355d1e00ebb8f7bc4cbbc6b173a346
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SHA1
a6804cf44577702bedf2877c302794c3606ee325
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SHA256
6b4d50ee4950a8a97627c9281f3cca2266d1d16d20adc249c3f9a84c29967b94
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SHA512
4e6a26240217acc2fc7594406adf2cc163a939db96d94ad18ff0f6025e9dd9f34aec88636f0682afcdfac202c6c89fcc50c8e886e0cbf82df3004dcf2f0bdb4f
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SSDEEP
12288:EuUlSHsf2k3dlITfY2AXPkWBsF9vTyAAkTLWmVOeDH1uAWsn60jl9bOs:9MeGNWLAMpF9vGhgb1uKn6gl9q
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\{3A4E6FF3-BF59-446E-9DC8-731BCE2F349A} regsvr32.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File created C:\Windows\SysWOW64\c__3948.nls regsvr32.exe -
Drops file in Program Files directory 1 IoCs
description ioc Process File opened for modification C:\Program Files\Mozilla Firefox\firefox.exe regsvr32.exe -
Modifies registry class 11 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3A4E6FF3-BF59-446E-9DC8-731BCE2F349A} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3A4E6FF3-BF59-446E-9DC8-731BCE2F349A}\ = "NETWORK SERVICE" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3A4E6FF3-BF59-446E-9DC8-731BCE2F349A}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3A4E6FF3-BF59-446E-9DC8-731BCE2F349A}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3A4E6FF3-BF59-446E-9DC8-731BCE2F349A}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3A4E6FF3-BF59-446E-9DC8-731BCE2F349A}\ProgID\ = "f1355d1e00ebb8f7bc4cbbc6b173a346_JaffaCakes118.Microsoft Update Service" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3A4E6FF3-BF59-446E-9DC8-731BCE2F349A}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f1355d1e00ebb8f7bc4cbbc6b173a346_JaffaCakes118.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\f1355d1e00ebb8f7bc4cbbc6b173a346_JaffaCakes118.Microsoft Update Service regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\f1355d1e00ebb8f7bc4cbbc6b173a346_JaffaCakes118.Microsoft Update Service\ = "NETWORK SERVICE" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\f1355d1e00ebb8f7bc4cbbc6b173a346_JaffaCakes118.Microsoft Update Service\Clsid regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\f1355d1e00ebb8f7bc4cbbc6b173a346_JaffaCakes118.Microsoft Update Service\Clsid\ = "{3A4E6FF3-BF59-446E-9DC8-731BCE2F349A}" regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2128 regsvr32.exe 2128 regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2764 wrote to memory of 2128 2764 regsvr32.exe 28 PID 2764 wrote to memory of 2128 2764 regsvr32.exe 28 PID 2764 wrote to memory of 2128 2764 regsvr32.exe 28 PID 2764 wrote to memory of 2128 2764 regsvr32.exe 28 PID 2764 wrote to memory of 2128 2764 regsvr32.exe 28 PID 2764 wrote to memory of 2128 2764 regsvr32.exe 28 PID 2764 wrote to memory of 2128 2764 regsvr32.exe 28
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\f1355d1e00ebb8f7bc4cbbc6b173a346_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:2764 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\f1355d1e00ebb8f7bc4cbbc6b173a346_JaffaCakes118.dll2⤵
- Installs/modifies Browser Helper Object
- Drops file in System32 directory
- Drops file in Program Files directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:2128
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