Analysis
- max time kernel
93s - max time network
113s - platform
windows10-2004_x64 - resource
win10v2004-20240412-en - resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system - submitted
15/04/2024, 04:18
Behavioral task
behavioral1
Sample
f04a2e3a113ee4dcb43f1b8f54130fce_JaffaCakes118.dll
Resource
win7-20240221-en
4 signatures
150 seconds
General
- Target f04a2e3a113ee4dcb43f1b8f54130fce_JaffaCakes118.dll
- Size 158KB
- Sample240415-exa8baed22
- SHA256 9e355ebbac6b249350549565790d69a5e08d0a1b89ca4045d83fe27726dcee68
- MD5 f04a2e3a113ee4dcb43f1b8f54130fce
- SHA1 df172fb259cf74b98a4507e708223a6e1b4d5f36
- SHA512 26cbe42c86d41e09f8147c4538351f91d00137d3f0583d903f9979d322be97f976bf725c5263eca9b83348ddc070dfc6111e5e4cde8fac856ad58484ca1db562
- SSDEEP 3072:RUo1ije7HSjSMOt332bbrMbvT0q8O1cZPzQ7IXMBc+AMP+QfQEhxFyVU7fDCrlNi:Cj2HSnQ34wvP6bQ7yMP+DE827fYlg
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- 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\{986488AF-13D5-9DDF-4FEF-9FB88698CFC1} regsvr32.exe - Modifies registry class 11 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F9BA1AA9-CAD4-4C14-BDE6-922DFF5F6F38}\wversion = "3.4.7" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{986488AF-13D5-9DDF-4FEF-9FB88698CFC1}\ = "WebHelper Class" regsvr32.exe Key created \REGISTRY\MACHINE\Software\Classes\WOW6432Node\CLSID\{986488AF-13D5-9DDF-4FEF-9FB88698CFC1}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{986488AF-13D5-9DDF-4FEF-9FB88698CFC1}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" regsvr32.exe Key created \REGISTRY\MACHINE\Software\Classes\WOW6432Node\CLSID\{F9BA1AA9-CAD4-4C14-BDE6-922DFF5F6F38} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{F9BA1AA9-CAD4-4C14-BDE6-922DFF5F6F38}\webbrowser = "{986488AF-13D5-9DDF-4FEF-9FB88698CFC1}" regsvr32.exe Key created \REGISTRY\MACHINE\Software\Classes\WOW6432Node\CLSID\{986488AF-13D5-9DDF-4FEF-9FB88698CFC1} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{986488AF-13D5-9DDF-4FEF-9FB88698CFC1}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f04a2e3a113ee4dcb43f1b8f54130fce_JaffaCakes118.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key regsvr32.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1748 wrote to memory of 2336 1748 regsvr32.exe 84 PID 1748 wrote to memory of 2336 1748 regsvr32.exe 84 PID 1748 wrote to memory of 2336 1748 regsvr32.exe 84
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\f04a2e3a113ee4dcb43f1b8f54130fce_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1748 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\f04a2e3a113ee4dcb43f1b8f54130fce_JaffaCakes118.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:2336
-