Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
01-06-2024 14:23
Static task
static1
Behavioral task
behavioral1
Sample
8ab9de65ac04fddfd3425fd2903cd975_JaffaCakes118.dll
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
8ab9de65ac04fddfd3425fd2903cd975_JaffaCakes118.dll
Resource
win10v2004-20240508-en
General
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Target
8ab9de65ac04fddfd3425fd2903cd975_JaffaCakes118.dll
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Size
5.0MB
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MD5
8ab9de65ac04fddfd3425fd2903cd975
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SHA1
fd5329e59a23abff85b8b47e9a73d5f64209d92c
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SHA256
f311c50591e8685fc12a666f7fc43b08271f0af75013ede94a81d555d1f1fc7e
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SHA512
6f51ba3c9dc60da349c2853d983b4f8e4806caa49126966b4c1baf890239936c7fded00803f0e7908df92f1ec6f30ba64a41e8298c7ffbbb2fccc605ffcce271
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SSDEEP
98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2:+DqPe1Cxcxk3ZAEUadzR8yc4
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3286) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
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Executes dropped EXE 3 IoCs
Processes:
mssecsvc.exemssecsvc.exetasksche.exepid process 2068 mssecsvc.exe 1472 mssecsvc.exe 4008 tasksche.exe -
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
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Drops file in Windows directory 2 IoCs
Processes:
rundll32.exemssecsvc.exedescription ioc process File created C:\WINDOWS\mssecsvc.exe rundll32.exe File created C:\WINDOWS\tasksche.exe mssecsvc.exe -
Modifies data under HKEY_USERS 5 IoCs
Processes:
mssecsvc.exedescription ioc process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ mssecsvc.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 1020 wrote to memory of 1836 1020 rundll32.exe rundll32.exe PID 1020 wrote to memory of 1836 1020 rundll32.exe rundll32.exe PID 1020 wrote to memory of 1836 1020 rundll32.exe rundll32.exe PID 1836 wrote to memory of 2068 1836 rundll32.exe mssecsvc.exe PID 1836 wrote to memory of 2068 1836 rundll32.exe mssecsvc.exe PID 1836 wrote to memory of 2068 1836 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\8ab9de65ac04fddfd3425fd2903cd975_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1020 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\8ab9de65ac04fddfd3425fd2903cd975_JaffaCakes118.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1836 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2068 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:4008
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe -m security1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1472
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD51e7906c4115e025a60a984cb90554751
SHA13e6702ba7a6b0977619723fe35e3f689cd7c3fe8
SHA256e061d310bbe7fa3535f1fdabd400fafe2ecde8a5c8054568b60c8b3455f9ab05
SHA5127327637924528425474ab7855a261d0c47e3bbf804bc5cc48e1fd2fd5b02bd850070c61886b89497a4e2a51061c42e044a3398b0136167688af590dcf4221782
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C:\Windows\tasksche.exeFilesize
3.4MB
MD543e0dd1563eeebb59f9a9c58b3df7cb6
SHA137d2bbbc6300c4e0e271b7b9d1b5df4d41b4edcb
SHA256c1ae7d768902297d3f0d8413a7c5af68e68b14db549f0760dae2dfffcbd90bfd
SHA512d5110aa6879bb20841d584932bce7f6baa34a7e3bca358877e26a561f5db42a6e70a75e33a7481d4220319deabd0c186fea850d21970c0f70fb034b328b67926