Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system - submitted
27/05/2024, 03:05
Static task
static1
Behavioral task
behavioral1
Sample
77b59f9c9c6804bddf75cc35699a5922_JaffaCakes118.dll
Resource
win7-20240508-en
windows7-x64
3 signatures
150 seconds
General
- Target 77b59f9c9c6804bddf75cc35699a5922_JaffaCakes118.dll
- Size 512KB
- Sample240527-dk91faea7t
- SHA256 20a176539d83e93223b19b30c5ccbbc19b76ac2bb43c831d55f1e49a6ca4d24a
- MD5 77b59f9c9c6804bddf75cc35699a5922
- SHA1 fbf2a9fb97601bb9322d962b983e4d24c93987ab
- SHA512 22b4bd83a77d1227f89cd6700bc9ecf879f72a4837082a539bc310feba11e2bee348ea1a5321e58018c87a3cde1ed7d680dd19845b0710bb2e1283845e61d43c
- SSDEEP 6144:K8jlPhxJ8ZC2WS+6dWeKDchtbRI4YaMzWvdH:9xaZC2W2KWG4Ya2WvdH
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Installs/modifies Browser Helper Object 2 TTPs 3 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\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\ = "Linkey" regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\NoExplorer = "1" regsvr32.exe - Modifies registry class 44 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Linkey.Linkey\CLSID\ = "{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\ = "ILinkey" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\iedll.dll regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\iedll.dll\AppID = "{6A7CD9EC-D8BD-4340-BCD0-77C09A282921}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Linkey.Linkey\ = "Linkey Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Linkey.Linkey\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\ = "Linkey" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\ProgID\ = "Linkey.Linkey" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\TypeLib\ = "{726E90BE-DC22-4965-B215-E0784DC26F47}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\77b59f9c9c6804bddf75cc35699a5922_JaffaCakes118.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\FLAGS\ = "0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\0\win32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\VersionIndependentProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\Implemented Categories\{59FB2056-D625-48D0-A944-1A85B5AB2640} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\FLAGS regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\77b59f9c9c6804bddf75cc35699a5922_JaffaCakes118.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\Implemented Categories regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\ = "IEDllLib" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{6A7CD9EC-D8BD-4340-BCD0-77C09A282921} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\ProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\VersionIndependentProgID\ = "Linkey.Linkey" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\ = "ILinkey" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{726E90BE-DC22-4965-B215-E0784DC26F47}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4613B1C1-FBC0-43C3-A4B9-B1D6CD360BB3}\TypeLib\ = "{726E90BE-DC22-4965-B215-E0784DC26F47}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{6A7CD9EC-D8BD-4340-BCD0-77C09A282921}\ = "Linkey" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Linkey.Linkey regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4D9101D6-5BA0-4048-BDDE-7E2DF54C8C47}\Programmable regsvr32.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4324 wrote to memory of 3076 4324 regsvr32.exe 82 PID 4324 wrote to memory of 3076 4324 regsvr32.exe 82 PID 4324 wrote to memory of 3076 4324 regsvr32.exe 82
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\77b59f9c9c6804bddf75cc35699a5922_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:4324 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\77b59f9c9c6804bddf75cc35699a5922_JaffaCakes118.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:3076
-