Analysis
- max time kernel
93s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system - submitted
21/06/2024, 08:50
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
0a9223169020748e391433884b51058d_JaffaCakes118.dll
Resource
win7-20240419-en
windows7-x64
5 signatures
150 seconds
Behavioral task
behavioral2
Sample
0a9223169020748e391433884b51058d_JaffaCakes118.dll
Resource
win10v2004-20240508-en
windows10-2004-x64
5 signatures
150 seconds
General
- Target 0a9223169020748e391433884b51058d_JaffaCakes118.dll
- Size 252KB
- Sample240621-krrwrstclc
- SHA256 8581d2579112a5759cff653d331763ad344bf24b41bfcd9cfffd11969a3020b4
- MD5 0a9223169020748e391433884b51058d
- SHA1 d5ed14633b12fdd84987c32e44255aa882a232d4
- SHA512 116d14f9bf959468ff3996745e2d93cf6b0cad3e29b157ba655ae6a0c3f5e451b0789b45695e79ae0becb2a983eb8b0c87597f5cb4aee744a7fef310b34dc6ad
- SSDEEP 6144:hFiL/q4IC3tS6OFUm+zSTszOJeY4bKJFz:GrvIC3tAFUm+zSgVYQa
- MD5 SHA1 SHA512 SSDEEP
Score
8/10
Malware Config
Signatures
- Adds policy Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\explorer\Run regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\d = "C:\\Program Files (x86)\\Internet Explorer\\ctfmonvxc.exe" regsvr32.exe - 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 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1EBB16EF-3B3A-3D1F-8355-EECD1EA853D1} regsvr32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{1EBB16EF-3B3A-3D1F-8355-EECD1EA853D1}\IExplore = "1" regsvr32.exe - Drops file in Program Files directory 1 IoCs
description ioc Process File created C:\Program Files (x86)\Internet Explorer\ctfmonvxc.exe regsvr32.exe - Modifies registry class 41 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{60EE6687-E6C6-3205-9CAE-1978C4602686}\TypeLib\ = "{512398F2-CAC8-3E8D-B9E9-B56EAA167947}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D.1 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{60EE6687-E6C6-3205-9CAE-1978C4602686}\TypeLib\ = "{512398F2-CAC8-3E8D-B9E9-B56EAA167947}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{60EE6687-E6C6-3205-9CAE-1978C4602686}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1EBB16EF-3B3A-3D1F-8355-EECD1EA853D1}\ProgID regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1EBB16EF-3B3A-3D1F-8355-EECD1EA853D1}\InprocServer32 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{60EE6687-E6C6-3205-9CAE-1978C4602686}\TypeLib regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{512398F2-CAC8-3E8D-B9E9-B56EAA167947}\1.0\0\win32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{60EE6687-E6C6-3205-9CAE-1978C4602686}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1EBB16EF-3B3A-3D1F-8355-EECD1EA853D1}\ = "D" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{512398F2-CAC8-3E8D-B9E9-B56EAA167947}\1.0\FLAGS regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{512398F2-CAC8-3E8D-B9E9-B56EAA167947}\1.0\0 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1EBB16EF-3B3A-3D1F-8355-EECD1EA853D1}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{512398F2-CAC8-3E8D-B9E9-B56EAA167947}\1.0\HELPDIR regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{512398F2-CAC8-3E8D-B9E9-B56EAA167947}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{60EE6687-E6C6-3205-9CAE-1978C4602686}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D.1\ = "D" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1EBB16EF-3B3A-3D1F-8355-EECD1EA853D1} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1EBB16EF-3B3A-3D1F-8355-EECD1EA853D1}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0a9223169020748e391433884b51058d_JaffaCakes118.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{60EE6687-E6C6-3205-9CAE-1978C4602686} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{60EE6687-E6C6-3205-9CAE-1978C4602686}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{60EE6687-E6C6-3205-9CAE-1978C4602686}\TypeLib\Version = "1.0" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{60EE6687-E6C6-3205-9CAE-1978C4602686} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1EBB16EF-3B3A-3D1F-8355-EECD1EA853D1}\VersionIndependentProgID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1EBB16EF-3B3A-3D1F-8355-EECD1EA853D1}\VersionIndependentProgID\ = "D" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{512398F2-CAC8-3E8D-B9E9-B56EAA167947}\1.0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{512398F2-CAC8-3E8D-B9E9-B56EAA167947}\1.0\FLAGS\ = "0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{60EE6687-E6C6-3205-9CAE-1978C4602686}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{512398F2-CAC8-3E8D-B9E9-B56EAA167947}\1.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0a9223169020748e391433884b51058d_JaffaCakes118.dll" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D.1\CLSID\ = "{1EBB16EF-3B3A-3D1F-8355-EECD1EA853D1}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\D regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{512398F2-CAC8-3E8D-B9E9-B56EAA167947} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{512398F2-CAC8-3E8D-B9E9-B56EAA167947}\1.0\ = "LIB" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{60EE6687-E6C6-3205-9CAE-1978C4602686}\ = "IDOMEvwl" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{60EE6687-E6C6-3205-9CAE-1978C4602686}\ = "IDOMEvwl" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{60EE6687-E6C6-3205-9CAE-1978C4602686}\ProxyStubClsid32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D\ = "D" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\D\CLSID\ = "{1EBB16EF-3B3A-3D1F-8355-EECD1EA853D1}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1EBB16EF-3B3A-3D1F-8355-EECD1EA853D1}\ProgID\ = "D.1" regsvr32.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1732 wrote to memory of 2544 1732 regsvr32.exe 81 PID 1732 wrote to memory of 2544 1732 regsvr32.exe 81 PID 1732 wrote to memory of 2544 1732 regsvr32.exe 81
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\0a9223169020748e391433884b51058d_JaffaCakes118.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1732 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\0a9223169020748e391433884b51058d_JaffaCakes118.dll2⤵
- Adds policy Run key to start application
- Installs/modifies Browser Helper Object
- Drops file in Program Files directory
- Modifies registry class
PID:2544
-