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
22-06-2024 11:46
Static task
static1
Behavioral task
behavioral1
Sample
01fbeae20892adc72300afb2156d065e_JaffaCakes118.dll
Resource
win7-20240220-en
4 signatures
150 seconds
General
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Target
01fbeae20892adc72300afb2156d065e_JaffaCakes118.dll
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Size
133KB
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MD5
01fbeae20892adc72300afb2156d065e
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SHA1
190d3d50649eb62c7077a67a4e809ea6e3634e83
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SHA256
df152416d44e1259b78eae15a21fe0281812bac1ec8d12643e5b9c1896659ce3
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SHA512
57644d525ca30fe863fd7ebe31fed9a327eaf6a6c0d09c3ba66be7882e7d33a544e5b9000a6d6269e74392ac848dc19254dcf0516686c97062fb21401beadb34
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SSDEEP
1536:jDeJ0Xvonh950winvBv90Le8Kn5rXOkNzn8BBbEuZz8whqjdWtGH:XeJ0/r7903IVXjyBAuZz8whqj8IH
Malware Config
Signatures
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Installs/modifies Browser Helper Object 2 TTPs 2 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\{5558865D-C81D-4B15-B4DA-FA89B29DB61F} regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{5558865D-C81D-4B15-B4DA-FA89B29DB61F}\NoExplorer = "1" regsvr32.exe -
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Internet Explorer\URLSearchHooks\{3FF7D676-A695-4F53-8C95-17F525512ECB} regsvr32.exe -
Modifies registry class 64 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C12E92CD-BF8D-4110-8A06-666F68B30F27}\1.0\0\win32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{11665988-C100-477C-B89B-3B43331D9AE5}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{871BC1A6-FDCA-4121-9888-5D6D9DED4360} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3FF7D676-A695-4F53-8C95-17F525512ECB}\VersionIndependentProgID\ = "winasc.WasUrlSrchHK" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C12E92CD-BF8D-4110-8A06-666F68B30F27}\1.0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{11665988-C100-477C-B89B-3B43331D9AE5}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1DD2E9F4-5956-4F0F-A89C-3E037A3DB279}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\winasc.WasUrlSrchHK regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3FF7D676-A695-4F53-8C95-17F525512ECB}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5558865D-C81D-4B15-B4DA-FA89B29DB61F}\VersionIndependentProgID\ = "winasc.WasGulf" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5558865D-C81D-4B15-B4DA-FA89B29DB61F}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5558865D-C81D-4B15-B4DA-FA89B29DB61F}\Version\ = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\winasc.WasUrlSrchHK.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C12E92CD-BF8D-4110-8A06-666F68B30F27}\1.0\ = "winascLib" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C12E92CD-BF8D-4110-8A06-666F68B30F27}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\01fbeae20892adc72300afb2156d065e_JaffaCakes118.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\winasc.WasGulf.1 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\winasc.WasGulf.1\CLSID\ = "{5558865D-C81D-4B15-B4DA-FA89B29DB61F}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1DD2E9F4-5956-4F0F-A89C-3E037A3DB279} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1DD2E9F4-5956-4F0F-A89C-3E037A3DB279}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{11665988-C100-477C-B89B-3B43331D9AE5}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{11665988-C100-477C-B89B-3B43331D9AE5} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1DD2E9F4-5956-4F0F-A89C-3E037A3DB279}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3FF7D676-A695-4F53-8C95-17F525512ECB}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{11665988-C100-477C-B89B-3B43331D9AE5}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C12E92CD-BF8D-4110-8A06-666F68B30F27} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C12E92CD-BF8D-4110-8A06-666F68B30F27}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{871BC1A6-FDCA-4121-9888-5D6D9DED4360}\ = "winasc" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\winasc.WasUrlSrchHK\CurVer regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\winasc.WasUrlSrchHK.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1DD2E9F4-5956-4F0F-A89C-3E037A3DB279}\TypeLib\ = "{C12E92CD-BF8D-4110-8A06-666F68B30F27}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\winasc.WasGulf\CurVer regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5558865D-C81D-4B15-B4DA-FA89B29DB61F}\ProgID\ = "winasc.WasGulf.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3FF7D676-A695-4F53-8C95-17F525512ECB}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3FF7D676-A695-4F53-8C95-17F525512ECB}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{11665988-C100-477C-B89B-3B43331D9AE5}\TypeLib\ = "{C12E92CD-BF8D-4110-8A06-666F68B30F27}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1DD2E9F4-5956-4F0F-A89C-3E037A3DB279} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1DD2E9F4-5956-4F0F-A89C-3E037A3DB279}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\AppID\winasc.DLL\AppID = "{871BC1A6-FDCA-4121-9888-5D6D9DED4360}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3FF7D676-A695-4F53-8C95-17F525512ECB}\ProgID\ = "winasc.WasUrlSrchHK.1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C12E92CD-BF8D-4110-8A06-666F68B30F27}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3FF7D676-A695-4F53-8C95-17F525512ECB}\Version regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{11665988-C100-477C-B89B-3B43331D9AE5}\ = "IWasGulf" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\winasc.WasGulf.1\ = "Windows Assist Service" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3FF7D676-A695-4F53-8C95-17F525512ECB} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3FF7D676-A695-4F53-8C95-17F525512ECB}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\01fbeae20892adc72300afb2156d065e_JaffaCakes118.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{11665988-C100-477C-B89B-3B43331D9AE5}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1DD2E9F4-5956-4F0F-A89C-3E037A3DB279}\ = "IWasUrlSrchHK" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5558865D-C81D-4B15-B4DA-FA89B29DB61F}\Programmable regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5558865D-C81D-4B15-B4DA-FA89B29DB61F}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{11665988-C100-477C-B89B-3B43331D9AE5}\ = "IWasGulf" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{11665988-C100-477C-B89B-3B43331D9AE5}\TypeLib\ = "{C12E92CD-BF8D-4110-8A06-666F68B30F27}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\winasc.WasGulf\ = "Windows Assist Service" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C12E92CD-BF8D-4110-8A06-666F68B30F27}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\winasc.WasUrlSrchHK.1\CLSID\ = "{3FF7D676-A695-4F53-8C95-17F525512ECB}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{3FF7D676-A695-4F53-8C95-17F525512ECB}\ = "Windows Assist Service HK" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{C12E92CD-BF8D-4110-8A06-666F68B30F27}\1.0\FLAGS\ = "0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{11665988-C100-477C-B89B-3B43331D9AE5}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1DD2E9F4-5956-4F0F-A89C-3E037A3DB279}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1DD2E9F4-5956-4F0F-A89C-3E037A3DB279}\ = "IWasUrlSrchHK" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\winasc.WasGulf.1\CLSID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5558865D-C81D-4B15-B4DA-FA89B29DB61F}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5558865D-C81D-4B15-B4DA-FA89B29DB61F}\ = "Windows Assist Service" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5558865D-C81D-4B15-B4DA-FA89B29DB61F}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{11665988-C100-477C-B89B-3B43331D9AE5} regsvr32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1256 wrote to memory of 2828 1256 regsvr32.exe 81 PID 1256 wrote to memory of 2828 1256 regsvr32.exe 81 PID 1256 wrote to memory of 2828 1256 regsvr32.exe 81
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\01fbeae20892adc72300afb2156d065e_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1256 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\01fbeae20892adc72300afb2156d065e_JaffaCakes118.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies Internet Explorer settings
- Modifies registry class
PID:2828
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