Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
29-05-2024 09:17
Static task
static1
Behavioral task
behavioral1
Sample
803b64a54c131c3ca63aeb25bcb919ff_JaffaCakes118.dll
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
803b64a54c131c3ca63aeb25bcb919ff_JaffaCakes118.dll
Resource
win10v2004-20240426-en
General
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Target
803b64a54c131c3ca63aeb25bcb919ff_JaffaCakes118.dll
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Size
5.0MB
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MD5
803b64a54c131c3ca63aeb25bcb919ff
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SHA1
1f314558297d78b4cfe8f35964f3b604f2a310ad
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SHA256
abd1c51660836bbaa7e15bff5153aff2b00fe6ef34c5c27f258d8aafcad39aa4
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SHA512
277a2ae69715784c2c5760ee6562043a92a51bd2459cff889c6fed3acec802a8083c56d178e7567c4fc95b2d63caed49b1e79cb374f6ceb88a5f52173bc19a40
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SSDEEP
49152:SnAQqMSPbcBVQejcYp/P/G8txAMEcaEau3R8yAH1plAH:+DqPoBhh/P/Fx593R8yAVp2H
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3320) 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 1908 mssecsvc.exe 1640 mssecsvc.exe 4952 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 1820 wrote to memory of 1656 1820 rundll32.exe rundll32.exe PID 1820 wrote to memory of 1656 1820 rundll32.exe rundll32.exe PID 1820 wrote to memory of 1656 1820 rundll32.exe rundll32.exe PID 1656 wrote to memory of 1908 1656 rundll32.exe mssecsvc.exe PID 1656 wrote to memory of 1908 1656 rundll32.exe mssecsvc.exe PID 1656 wrote to memory of 1908 1656 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\803b64a54c131c3ca63aeb25bcb919ff_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1820 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\803b64a54c131c3ca63aeb25bcb919ff_JaffaCakes118.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1656 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1908 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:4952
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe -m security1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1640
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD55e93731697f153c5339e084de62f3ecc
SHA125c779344517425f6945e7812484b12110b5e1f1
SHA2563019d601296f556bd8152ca2e28cf858f4052bd9a4e18c01021ce5722b4af4ad
SHA512e52463c99b10b4bc98f425f4c51e68f53e0521617a052a914b898cb3a9578df50211fdf96de2d8659e35bf8ba8bbaf85cc745760c50c6e199483254dfb20b25b
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C:\Windows\tasksche.exeFilesize
3.4MB
MD55c14d207e5e205af2dd897d71bc6f593
SHA1ca98c43f9b4dcd5c00ab39ab2e9c5089c26e9328
SHA2566e2b6f305bfb28694bd360ae2644d71c4fbdf5ab0613572f1675669ef9895f8e
SHA5124e490e4437ceefeabc4009e7345372024b603ec96894887b2ce4ef02038aef9171f8fed362180f93f670aaa363d54ec216504f5be17871abac92d316898910a9