Analysis
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max time kernel
120s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
27-05-2024 18:12
Static task
static1
Behavioral task
behavioral1
Sample
MrsMajor 3.0.7z
Resource
win7-20240508-en
windows7-x64
4 signatures
150 seconds
Behavioral task
behavioral2
Sample
MrsMajor 3.0.7z
Resource
win10v2004-20240426-en
windows10-2004-x64
7 signatures
150 seconds
General
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Target
MrsMajor 3.0.7z
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Size
234KB
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MD5
fedb45ddbd72fc70a81c789763038d81
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SHA1
f1ed20c626d0a7ca2808ed768e7d7b319bc4c84a
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SHA256
eacd5ed86a8ddd368a1089c7b97b791258e3eeb89c76c6da829b58d469f654b2
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SHA512
813c0367f3aeceea9be02ffad4bfa8092ea44b428e68db8f3f33e45e4e5e53599d985fa79a708679b6957cbd04d9b9d67b288137fa71ac5a59e917b8792c8298
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SSDEEP
6144:HMMAgnxjSgdHCueEVIzAMAcqXvYEC86TFSQ:HagxjSg1xrIzAMAcuI5TFT
Score
3/10
Malware Config
Signatures
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 2 IoCs
Processes:
rundll32.exerundll32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000_Classes\Local Settings rundll32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
AcroRd32.exepid process 340 AcroRd32.exe 340 AcroRd32.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
cmd.exerundll32.exerundll32.exedescription pid process target process PID 1264 wrote to memory of 2716 1264 cmd.exe rundll32.exe PID 1264 wrote to memory of 2716 1264 cmd.exe rundll32.exe PID 1264 wrote to memory of 2716 1264 cmd.exe rundll32.exe PID 2716 wrote to memory of 2628 2716 rundll32.exe rundll32.exe PID 2716 wrote to memory of 2628 2716 rundll32.exe rundll32.exe PID 2716 wrote to memory of 2628 2716 rundll32.exe rundll32.exe PID 2628 wrote to memory of 340 2628 rundll32.exe AcroRd32.exe PID 2628 wrote to memory of 340 2628 rundll32.exe AcroRd32.exe PID 2628 wrote to memory of 340 2628 rundll32.exe AcroRd32.exe PID 2628 wrote to memory of 340 2628 rundll32.exe AcroRd32.exe
Processes
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C:\Windows\system32\cmd.execmd /c "C:\Users\Admin\AppData\Local\Temp\MrsMajor 3.0.7z"1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\MrsMajor 3.0.7z2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\MrsMajor 3.0.7z3⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\MrsMajor 3.0.7z"4⤵
- Suspicious use of SetWindowsHookEx