Analysis
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max time kernel
118s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
15-04-2024 19:56
Behavioral task
behavioral1
Sample
f1cd8f79c76e25351083223f1095dfdb_JaffaCakes118.dll
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
f1cd8f79c76e25351083223f1095dfdb_JaffaCakes118.dll
Resource
win10v2004-20240412-en
General
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Target
f1cd8f79c76e25351083223f1095dfdb_JaffaCakes118.dll
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Size
89KB
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MD5
f1cd8f79c76e25351083223f1095dfdb
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SHA1
8a7e0f12a96fe5e98fba83a2d1bba27026d3fc2d
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SHA256
b2dcaf5321231924745898afbd6427041fac0bf31f4c83fcd9037bc1a029256e
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SHA512
7d596ad73e5b7dc429fa91c794cef8f187845b64d34ec8378f3fec2d46bdd739d95e96d4c83a52f8c335ca047bd017f82f0cf2eedf91464490c232d77f04f81a
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SSDEEP
1536:F6c2bcATlbcKNyRAOh5wbuq1keisif9TR7fhbhnq7U6L4tq34fng+jiulG/lR:FkI0tvwde5i7fhbH6L4to4fE
Malware Config
Signatures
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resource yara_rule behavioral1/memory/2188-0-0x00000000008B0000-0x00000000008EF000-memory.dmp upx -
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\{D862A36A-A272-4152-8F31-61E2FCC3A1CE} regsvr32.exe -
Modifies registry class 6 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D862A36A-A272-4152-8F31-61E2FCC3A1CE}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D862A36A-A272-4152-8F31-61E2FCC3A1CE} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D862A36A-A272-4152-8F31-61E2FCC3A1CE}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f1cd8f79c76e25351083223f1095dfdb_JaffaCakes118.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{D862A36A-A272-4152-8F31-61E2FCC3A1CE}\InprocServer32\ThreadingModel = "apartment" regsvr32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1968 wrote to memory of 2188 1968 regsvr32.exe 28 PID 1968 wrote to memory of 2188 1968 regsvr32.exe 28 PID 1968 wrote to memory of 2188 1968 regsvr32.exe 28 PID 1968 wrote to memory of 2188 1968 regsvr32.exe 28 PID 1968 wrote to memory of 2188 1968 regsvr32.exe 28 PID 1968 wrote to memory of 2188 1968 regsvr32.exe 28 PID 1968 wrote to memory of 2188 1968 regsvr32.exe 28
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\f1cd8f79c76e25351083223f1095dfdb_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1968 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\f1cd8f79c76e25351083223f1095dfdb_JaffaCakes118.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2188
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