Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
08-05-2024 02:27
Static task
static1
Behavioral task
behavioral1
Sample
22cdf9a8c9df5d58027585b4ce367c1e_JaffaCakes118.dll
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
22cdf9a8c9df5d58027585b4ce367c1e_JaffaCakes118.dll
Resource
win10v2004-20240419-en
General
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Target
22cdf9a8c9df5d58027585b4ce367c1e_JaffaCakes118.dll
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Size
5.0MB
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MD5
22cdf9a8c9df5d58027585b4ce367c1e
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SHA1
2e9a90e7772a783f8de93f9c660f9bbb0cec3910
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SHA256
cb009c60ff14fec89d0890ecd23462ac403cecd22c9e0c7bbc019e38dad57480
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SHA512
a7bfd8888b50c197e20d4753632d07306ce06a3ee7ebaae6b54b04c79e4367964ec72eabc8e30e0cb4640a59f43b37e93ecceee3845a52b4541cb590b0ddc287
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SSDEEP
12288:yebLgPlu+QhMbaIMu7L5NVErCA4z2g6rTcbckPU82900Ve7zw+K+D:zbLgddQhfdmMSirYbcMNgef0
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3270) 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 4516 mssecsvc.exe 1164 mssecsvc.exe 4932 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\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 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" mssecsvc.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 1924 wrote to memory of 1784 1924 rundll32.exe rundll32.exe PID 1924 wrote to memory of 1784 1924 rundll32.exe rundll32.exe PID 1924 wrote to memory of 1784 1924 rundll32.exe rundll32.exe PID 1784 wrote to memory of 4516 1784 rundll32.exe mssecsvc.exe PID 1784 wrote to memory of 4516 1784 rundll32.exe mssecsvc.exe PID 1784 wrote to memory of 4516 1784 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\22cdf9a8c9df5d58027585b4ce367c1e_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1924 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\22cdf9a8c9df5d58027585b4ce367c1e_JaffaCakes118.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1784 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:4516 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:4932
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe -m security1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1164
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD5d014c01e8206f437927b849b4e831e31
SHA1621e3901bd31a648c297cae92b4cfbb5d47d9cca
SHA256fcc3e3b3b14160ce4c69421b6dff28d5459862b7c33445649c4f9524cb758753
SHA512d8043262890141105efb6c52ea777dc6d2bdf2f06ff5b09b2867cd1a90a1b135e22447d4c75ac12523dd1ebeeba5d1e7d54aa57134d2691d102c4f52393abe06
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C:\Windows\tasksche.exeFilesize
3.4MB
MD549a51efa8938a364daf37a53e4dd7558
SHA18de2f6829a854a80529c86960d1d8a072dcdeb4c
SHA256859d933b536d4c72dbfd55ee4c538e7e519030ba4c509579a5176ab5046277f9
SHA51220094e87de965113bf60661b3f2c2b25a4c46da8546dcc4ff9fb1b91197858cf581befdb4677cc7a58b0e7e0c8f27fd4b27c43fbb14687740baf170b1de9be6d