Analysis
- max time kernel
93s - max time network
96s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system - submitted
07/04/2024, 22:25
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
e5ff5f9d2345eb5fe47e5cb809d5a20b_JaffaCakes118.dll
Resource
win7-20240221-en
windows7-x64
10 signatures
150 seconds
Behavioral task
behavioral2
Sample
e5ff5f9d2345eb5fe47e5cb809d5a20b_JaffaCakes118.dll
Resource
win10v2004-20240226-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target e5ff5f9d2345eb5fe47e5cb809d5a20b_JaffaCakes118.dll
- Size 96KB
- Sample240407-2ca35sgc5v
- SHA256 480c07c961f3f823edee54d80622c155ca9361fa6fb691853c56362cb50fcb13
- MD5 e5ff5f9d2345eb5fe47e5cb809d5a20b
- SHA1 f7abed3d9f4fa7763681f64487b63ad8fb6689a9
- SHA512 856e3c69ac303e75a13efe0954233a0af6bef00b28e056aee5ad0b7356ba98679fa4395ad96d68f4a74cd6d9680de2b8d9ebf9c98ed53bc3f656a985cda6fd65
- SSDEEP 1536:JDeBq3rgevj+idiZTUvujUx8nHXB1UO4Veow8uDzZYK:JDgq3rgyj+vkzxSx1qVeoRu
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" rundll32.exe - Modifies AppInit DLL entries 2 TTPs
- 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\{A41FA8C2-9D9A-44D7-8B0C-947E9D99A6AE} rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{A41FA8C2-9D9A-44D7-8B0C-947E9D99A6AE}\ rundll32.exe - Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\SysWOW64\kernel32.sys rundll32.exe File created C:\Windows\SysWOW64\mfc48.dll rundll32.exe - Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\java\classes\java.dll rundll32.exe -
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\GUID = "{A41FA8C2-9D9A-44D7-8B0C-947E9D99A6AE}" rundll32.exe - Modifies registry class 5 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A41FA8C2-9D9A-44D7-8B0C-947E9D99A6AE}\InprocServer32\ThreadingModel = "Apartment" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A41FA8C2-9D9A-44D7-8B0C-947E9D99A6AE} rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A41FA8C2-9D9A-44D7-8B0C-947E9D99A6AE}\ = "Java Class" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A41FA8C2-9D9A-44D7-8B0C-947E9D99A6AE}\InprocServer32 rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A41FA8C2-9D9A-44D7-8B0C-947E9D99A6AE}\InprocServer32\ = "C:\\Windows\\java\\classes\\java.dll" rundll32.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe 3944 rundll32.exe - Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeDebugPrivilege 3944 rundll32.exe Token: SeDebugPrivilege 3944 rundll32.exe Token: SeDebugPrivilege 3944 rundll32.exe Token: SeDebugPrivilege 3944 rundll32.exe Token: SeDebugPrivilege 3944 rundll32.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1992 wrote to memory of 3944 1992 rundll32.exe 86 PID 1992 wrote to memory of 3944 1992 rundll32.exe 86 PID 1992 wrote to memory of 3944 1992 rundll32.exe 86 PID 3944 wrote to memory of 3472 3944 rundll32.exe 57 PID 3944 wrote to memory of 612 3944 rundll32.exe 5 PID 3944 wrote to memory of 2544 3944 rundll32.exe 46
Processes
-
C:\Windows\system32\winlogon.exewinlogon.exe1⤵PID:612
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc1⤵PID:2544
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3472
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\e5ff5f9d2345eb5fe47e5cb809d5a20b_JaffaCakes118.dll,#12⤵
- Suspicious use of WriteProcessMemory
PID:1992 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\e5ff5f9d2345eb5fe47e5cb809d5a20b_JaffaCakes118.dll,#13⤵
- Modifies visiblity of hidden/system files in Explorer
- Installs/modifies Browser Helper Object
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3944
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Browser Extensions
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\mfc48.dll
- Size 96KB
- SHA256 480c07c961f3f823edee54d80622c155ca9361fa6fb691853c56362cb50fcb13
- MD5 e5ff5f9d2345eb5fe47e5cb809d5a20b
- SHA1 f7abed3d9f4fa7763681f64487b63ad8fb6689a9
- SHA512 856e3c69ac303e75a13efe0954233a0af6bef00b28e056aee5ad0b7356ba98679fa4395ad96d68f4a74cd6d9680de2b8d9ebf9c98ed53bc3f656a985cda6fd65
- SSDEEP 1536:JDeBq3rgevj+idiZTUvujUx8nHXB1UO4Veow8uDzZYK:JDgq3rgyj+vkzxSx1qVeoRu
- MD5 SHA1 SHA512 SSDEEP