Analysis
- max time kernel
93s - max time network
94s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system - submitted
18/06/2024, 16:19
Static task
static1
Behavioral task
behavioral1
Sample
bcdbb4d1b57a4b249a13527d76b812f4_JaffaCakes118.dll
Resource
win7-20240611-en
windows7-x64
3 signatures
150 seconds
General
- Target bcdbb4d1b57a4b249a13527d76b812f4_JaffaCakes118.dll
- Size 142KB
- Sample240618-tsga4a1cld
- SHA256 10831765dd595521ec7b9062f4e5c12cc5e4631588937f36ade537c8e7e4a23a
- MD5 bcdbb4d1b57a4b249a13527d76b812f4
- SHA1 9a978b4611bc7c274890073e39e9dee8e67831d9
- SHA512 ad83fb9578d69f82c5dd67e5cb174c39c8bd7760de9ab8150f390cd7bb5d3ce1edb37854c6152163bcbd1766e1cb7566414a543d494f6fbae3bf862608254682
- SSDEEP 3072:x8iaPw+xHhSR2Pn+yFq0Y+dP/17UTKF4Xq0EP:+7x4RQIkc4/0Y
- 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 Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{aff87634-f4a9-42bc-b2dc-be240584d095}\ = "On Stage" regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{aff87634-f4a9-42bc-b2dc-be240584d095}\NoExplorer = "1" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{aff87634-f4a9-42bc-b2dc-be240584d095} regsvr32.exe - Modifies registry class 34 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{642E3751-80F8-47ED-BB97-04B9E3736DBE} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{642E3751-80F8-47ED-BB97-04B9E3736DBE}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F6F8C46F-69AB-4500-A2F9-C1521B317EA7}\1.0\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{642E3751-80F8-47ED-BB97-04B9E3736DBE} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{aff87634-f4a9-42bc-b2dc-be240584d095}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{aff87634-f4a9-42bc-b2dc-be240584d095}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\bcdbb4d1b57a4b249a13527d76b812f4_JaffaCakes118.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F6F8C46F-69AB-4500-A2F9-C1521B317EA7}\1.0\0\win32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{642E3751-80F8-47ED-BB97-04B9E3736DBE}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{aff87634-f4a9-42bc-b2dc-be240584d095}\ = "On Stage" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{aff87634-f4a9-42bc-b2dc-be240584d095}\Programmable regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{aff87634-f4a9-42bc-b2dc-be240584d095}\Version regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{aff87634-f4a9-42bc-b2dc-be240584d095}\TypeLib\ = "{f6f8c46f-69ab-4500-a2f9-c1521b317ea7}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F6F8C46F-69AB-4500-A2F9-C1521B317EA7} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{642E3751-80F8-47ED-BB97-04B9E3736DBE}\ProxyStubClsid32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{642E3751-80F8-47ED-BB97-04B9E3736DBE}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{642E3751-80F8-47ED-BB97-04B9E3736DBE}\TypeLib\ = "{F6F8C46F-69AB-4500-A2F9-C1521B317EA7}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F6F8C46F-69AB-4500-A2F9-C1521B317EA7}\1.0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F6F8C46F-69AB-4500-A2F9-C1521B317EA7}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{aff87634-f4a9-42bc-b2dc-be240584d095}\Version\ = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F6F8C46F-69AB-4500-A2F9-C1521B317EA7}\1.0\FLAGS regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{642E3751-80F8-47ED-BB97-04B9E3736DBE}\ = "IOnStageBHO" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{642E3751-80F8-47ED-BB97-04B9E3736DBE}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{aff87634-f4a9-42bc-b2dc-be240584d095} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{aff87634-f4a9-42bc-b2dc-be240584d095}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{642E3751-80F8-47ED-BB97-04B9E3736DBE}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{642E3751-80F8-47ED-BB97-04B9E3736DBE}\TypeLib\Version = "1.0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F6F8C46F-69AB-4500-A2F9-C1521B317EA7}\1.0\ = "OnStageIEClientLib" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{642E3751-80F8-47ED-BB97-04B9E3736DBE}\ = "IOnStageBHO" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F6F8C46F-69AB-4500-A2F9-C1521B317EA7}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\bcdbb4d1b57a4b249a13527d76b812f4_JaffaCakes118.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F6F8C46F-69AB-4500-A2F9-C1521B317EA7}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{642E3751-80F8-47ED-BB97-04B9E3736DBE}\TypeLib\ = "{F6F8C46F-69AB-4500-A2F9-C1521B317EA7}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{642E3751-80F8-47ED-BB97-04B9E3736DBE}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{aff87634-f4a9-42bc-b2dc-be240584d095}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{F6F8C46F-69AB-4500-A2F9-C1521B317EA7}\1.0\FLAGS\ = "0" regsvr32.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4204 wrote to memory of 1836 4204 regsvr32.exe 82 PID 4204 wrote to memory of 1836 4204 regsvr32.exe 82 PID 4204 wrote to memory of 1836 4204 regsvr32.exe 82
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\bcdbb4d1b57a4b249a13527d76b812f4_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:4204 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\bcdbb4d1b57a4b249a13527d76b812f4_JaffaCakes118.dll2⤵
- Installs/modifies Browser Helper Object
- Modifies registry class
PID:1836
-