Analysis
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max time kernel
51s -
max time network
51s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
20-06-2024 06:22
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
03980ccab1a6e67c85e9f75fb1a6679d_JaffaCakes118.dll
Resource
win7-20240220-en
3 signatures
150 seconds
General
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Target
03980ccab1a6e67c85e9f75fb1a6679d_JaffaCakes118.dll
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Size
140KB
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MD5
03980ccab1a6e67c85e9f75fb1a6679d
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SHA1
271e81fef7a1d6b342eb239c516225c1f57d6dd5
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SHA256
81abcc0128c8d16a9bf48a5f2f9a088df4084a96015b2350bef4978f3858127b
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SHA512
e3b211ea10b5c63d3a2dacf143bddbc05e7a24cd6c477fd8eb64026afa2d04059a2b3c962dff9c05386e09b429333a0138f10b062db8443e26e1411231f8b0a9
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SSDEEP
3072:KqBbMa5rjkP5Z7Q3jElBaWfhXOdoiyfRW:KqB4a5/iAeTfhKyf
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.
Processes:
regsvr32.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{385AB8C6-FB22-4D17-8834-064E2BA0A6F0} regsvr32.exe -
Modifies registry class 31 IoCs
Processes:
regsvr32.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{385AB8C4-FB22-4D17-8834-064E2BA0A6F0}\TypeLib\ = "{385AB8C5-FB22-4D17-8834-064E2BA0A6F0}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{385AB8C6-FB22-4D17-8834-064E2BA0A6F0}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{385AB8C6-FB22-4D17-8834-064E2BA0A6F0}\TypeLib\ = "{385AB8C5-FB22-4D17-8834-064E2BA0A6F0}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{385AB8C5-FB22-4D17-8834-064E2BA0A6F0}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\03980ccab1a6e67c85e9f75fb1a6679d_JaffaCakes118.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{385AB8C4-FB22-4D17-8834-064E2BA0A6F0}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{385AB8C6-FB22-4D17-8834-064E2BA0A6F0}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\03980ccab1a6e67c85e9f75fb1a6679d_JaffaCakes118.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{385AB8C5-FB22-4D17-8834-064E2BA0A6F0}\1.0\HELPDIR regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{385AB8C4-FB22-4D17-8834-064E2BA0A6F0}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{385AB8C6-FB22-4D17-8834-064E2BA0A6F0}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{385AB8C5-FB22-4D17-8834-064E2BA0A6F0}\1.0\0\win32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{385AB8C4-FB22-4D17-8834-064E2BA0A6F0}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{385AB8C4-FB22-4D17-8834-064E2BA0A6F0}\ = "IIEHelperObj2" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{385AB8C4-FB22-4D17-8834-064E2BA0A6F0}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{385AB8C4-FB22-4D17-8834-064E2BA0A6F0}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{385AB8C6-FB22-4D17-8834-064E2BA0A6F0}\ = "Info cache" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{385AB8C4-FB22-4D17-8834-064E2BA0A6F0} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{385AB8C4-FB22-4D17-8834-064E2BA0A6F0}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{385AB8C4-FB22-4D17-8834-064E2BA0A6F0}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{385AB8C4-FB22-4D17-8834-064E2BA0A6F0}\ = "IIEHelperObj2" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{385AB8C5-FB22-4D17-8834-064E2BA0A6F0}\1.0\FLAGS regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{385AB8C5-FB22-4D17-8834-064E2BA0A6F0}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{385AB8C4-FB22-4D17-8834-064E2BA0A6F0} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{385AB8C4-FB22-4D17-8834-064E2BA0A6F0}\TypeLib\ = "{385AB8C5-FB22-4D17-8834-064E2BA0A6F0}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{385AB8C6-FB22-4D17-8834-064E2BA0A6F0}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{385AB8C5-FB22-4D17-8834-064E2BA0A6F0} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{385AB8C5-FB22-4D17-8834-064E2BA0A6F0}\1.0\ = "Pctools 1.0 Type Library" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{385AB8C4-FB22-4D17-8834-064E2BA0A6F0}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{385AB8C6-FB22-4D17-8834-064E2BA0A6F0} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{385AB8C5-FB22-4D17-8834-064E2BA0A6F0}\1.0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{385AB8C5-FB22-4D17-8834-064E2BA0A6F0}\1.0\0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{385AB8C5-FB22-4D17-8834-064E2BA0A6F0}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
regsvr32.exedescription pid process target process PID 1760 wrote to memory of 2024 1760 regsvr32.exe regsvr32.exe PID 1760 wrote to memory of 2024 1760 regsvr32.exe regsvr32.exe PID 1760 wrote to memory of 2024 1760 regsvr32.exe regsvr32.exe
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\03980ccab1a6e67c85e9f75fb1a6679d_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1760 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\03980ccab1a6e67c85e9f75fb1a6679d_JaffaCakes118.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2024