Analysis
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max time kernel
147s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
22-06-2024 13:16
Static task
static1
Behavioral task
behavioral1
Sample
0251dfbb3d48c91754793020d55071da_JaffaCakes118.dll
Resource
win7-20240508-en
General
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Target
0251dfbb3d48c91754793020d55071da_JaffaCakes118.dll
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Size
175KB
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MD5
0251dfbb3d48c91754793020d55071da
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SHA1
6fb7dc87fb465f67d73e7ff59c5fc49e2754721a
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SHA256
1e5c19bcb04b9e214a589c34b53270cbc9ecfd3688f8413829d66b339ad909e3
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SHA512
23f7584e1210e429b6c20fb6cb2e00043231df47accd42f0fc0b56739f2ac64fa3f1d6fae3d2fdb3d6d83266ff321c758cc7339a9d4857e89e4674eb57356187
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SSDEEP
384:VpdNjtU2OSuRc7JPr1zo/1Vnk1bVcQIJJVvkvReIB2zgqHqLp:VpdT/Y2Vc7Jy1BGgqKL
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\{4A041F13-A111-12A3-B0CF-F99818AA68A4} rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{4A041F13-A111-12A3-B0CF-F99818AA68A4}\ = "zxmsawin.dll" rundll32.exe -
Drops file in System32 directory 1 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\verclsid.exe rundll32.exe -
Modifies registry class 6 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4A041F13-A111-12A3-B0CF-F99818AA68A4}\InprocServer32\ThreadingModel = "Apartment" rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4A041F13-A111-12A3-B0CF-F99818AA68A4}\InprocServer32 rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4A041F13-A111-12A3-B0CF-F99818AA68A4} rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4A041F13-A111-12A3-B0CF-F99818AA68A4}\InprocServer32\ = "C:\\Windows\\SysWow64\\zxmsawin.dll" rundll32.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4448 rundll32.exe 4448 rundll32.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3416 wrote to memory of 4448 3416 rundll32.exe 82 PID 3416 wrote to memory of 4448 3416 rundll32.exe 82 PID 3416 wrote to memory of 4448 3416 rundll32.exe 82 PID 4448 wrote to memory of 5012 4448 rundll32.exe 83 PID 4448 wrote to memory of 5012 4448 rundll32.exe 83 PID 4448 wrote to memory of 5012 4448 rundll32.exe 83
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\0251dfbb3d48c91754793020d55071da_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:3416 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\0251dfbb3d48c91754793020d55071da_JaffaCakes118.dll,#12⤵
- Installs/modifies Browser Helper Object
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4448 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\~DFD240595375.bat3⤵PID:5012
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
121B
MD509517fc62284f33e877a276463580bd1
SHA10b14fe1db4493818f9de0bf2a56ee5370b8d479a
SHA2566cc6bbb1f3f754b6894d84130f5f2d86569ac3a603e1632d3cefa028f22b6238
SHA5121b924dd216d0f38199cc6df215e65ff260aa48fa37aa620dabcbc616f434643bd1f2e617d66b14bd52900214148741565128ba9589782ba582fd7308369f4a4d