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
31-05-2024 20:39
Static task
static1
Behavioral task
behavioral1
Sample
884724fd8436ea7e6f44ff3e08b9de52_JaffaCakes118.dll
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
884724fd8436ea7e6f44ff3e08b9de52_JaffaCakes118.dll
Resource
win10v2004-20240508-en
General
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Target
884724fd8436ea7e6f44ff3e08b9de52_JaffaCakes118.dll
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Size
5.0MB
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MD5
884724fd8436ea7e6f44ff3e08b9de52
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SHA1
086b85280b0b5dc9c2da2c453e23412ab3d0b3de
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SHA256
61161efca8ce39d4b1ea519789159985b506ea9c6f75d156fafc18acaad84dc6
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SHA512
8512a1f0e15ae0ddb42f3d413993101400fb674bcf9da36440f4a1ff8e62f560c4af79c61d889e8a2ef045910d1dee5ba0140c9d9939e21fa3a3ca4a08604122
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SSDEEP
49152:SnAQqMSPbcBV7NRx+TSqTdX1HkQo6SAA:+DqPoBvRxcSUDk36SA
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3201) 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 404 mssecsvc.exe 940 mssecsvc.exe 2884 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\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 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 -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 224 wrote to memory of 4688 224 rundll32.exe rundll32.exe PID 224 wrote to memory of 4688 224 rundll32.exe rundll32.exe PID 224 wrote to memory of 4688 224 rundll32.exe rundll32.exe PID 4688 wrote to memory of 404 4688 rundll32.exe mssecsvc.exe PID 4688 wrote to memory of 404 4688 rundll32.exe mssecsvc.exe PID 4688 wrote to memory of 404 4688 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\884724fd8436ea7e6f44ff3e08b9de52_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:224 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\884724fd8436ea7e6f44ff3e08b9de52_JaffaCakes118.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4688 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:404 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:2884
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe -m security1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:940
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD5259f8ef97d751a6811bb3c284d5308ad
SHA1735ac50c25a22746b997bd4d609aaf6b753f597c
SHA256fd42556208d3eabd5a0e34622263c0a41559eb2622a28fb4ac488866cfc6bfaa
SHA512ac0f3730d6b9e9d0d94b04a05caed146fd60b17a803237ec8bedcc9484b9569428e6ef44cf443184a7abeaf577f3fab702ab89323fdcfad48c1bc24a1171e1ea
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C:\Windows\tasksche.exeFilesize
3.4MB
MD55e067e52693fdc7609f729305b3c9f05
SHA1c145b215e9c52992ebe5d7a74f102a91723928ff
SHA25623152dcc5d4d8f1638301c3baa843d67555740174486b9b92dc1ecdc316141ba
SHA51266e67959c1a6c3fcdbf50a7e6045e1e525ba78495ea13321278c82fbda17d092f8683f17462da5add279273efad12b96d7aeedcf89368d5296db9fa651995d7b