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
19-05-2024 06:00
Static task
static1
Behavioral task
behavioral1
Sample
58e4dd302ee80981a611575f66e97a42_JaffaCakes118.dll
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
58e4dd302ee80981a611575f66e97a42_JaffaCakes118.dll
Resource
win10v2004-20240426-en
General
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Target
58e4dd302ee80981a611575f66e97a42_JaffaCakes118.dll
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Size
5.0MB
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MD5
58e4dd302ee80981a611575f66e97a42
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SHA1
c686c2bfd1b97355f4bc0503ede39e0878bb156e
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SHA256
cf2b25d102663d07f13719f79964104a3259d33742fdbc04bf23e7aa3159da7a
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SHA512
00383c19ad3d5e4f35c5a63a7dece53d76af3ceb4f1c5dfca7d5223d79417dfbb0da365ee574d682d4d61b4fc0e3981d2293441a35c05950e9217dc446dd0fb4
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SSDEEP
98304:+DqPoBhzecSUDk36SAEdhvxWa9P59H2H:+DqPeecxk3ZAEUadyH
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3125) 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 2472 mssecsvc.exe 3972 mssecsvc.exe 3872 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\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 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" mssecsvc.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 644 wrote to memory of 3284 644 rundll32.exe rundll32.exe PID 644 wrote to memory of 3284 644 rundll32.exe rundll32.exe PID 644 wrote to memory of 3284 644 rundll32.exe rundll32.exe PID 3284 wrote to memory of 2472 3284 rundll32.exe mssecsvc.exe PID 3284 wrote to memory of 2472 3284 rundll32.exe mssecsvc.exe PID 3284 wrote to memory of 2472 3284 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\58e4dd302ee80981a611575f66e97a42_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:644 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\58e4dd302ee80981a611575f66e97a42_JaffaCakes118.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3284 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2472 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:3872
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe -m security1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:3972
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.6MB
MD5ed9f1204b100861ff8fc0ec07ac0727e
SHA17ede963ee44aab7fed736f83a87876625b373d12
SHA256cbdf1a6a1f64981ac929d6d5ece3b539bdb7c2562db85c0b7343ea569c131f2b
SHA512d39a72860ca22e87137cec616c6b364a122a5d5868235614dd36cda4be47b24b8cf4964ef52eaa0d0d50b6259cc9863921a926e874b7eaf663c38f7be5899715
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Filesize
3.4MB
MD543a60b4d1577c679f43697c769e52fa6
SHA1dd1e25dca3747bddb33ecc4f61b6030cc4a47d38
SHA2565ce4b4f9680c4e7245e0e53613664ab07acd1353d5e07ad0782f57774c659c39
SHA512ef33c93223a05eccd9a37749efd891449433c31728df035cf0e587d62be126689428ca96de9ad926c4b79c2552d5f20966e7f12dab00638544ce2a09682ef1d8