Analysis
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max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
01-06-2024 03:04
Static task
static1
Behavioral task
behavioral1
Sample
8932eb4a6adcb1f00e3ed8fe72af3324_JaffaCakes118.dll
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
8932eb4a6adcb1f00e3ed8fe72af3324_JaffaCakes118.dll
Resource
win10v2004-20240426-en
General
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Target
8932eb4a6adcb1f00e3ed8fe72af3324_JaffaCakes118.dll
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Size
5.0MB
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MD5
8932eb4a6adcb1f00e3ed8fe72af3324
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SHA1
fe5c9cb3740d6ed10381a2cb1f6132a740059a94
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SHA256
7793ec935f7744363e2da33df49dbb9e9e71b35003f5a6eedec1c2b0007bb296
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SHA512
68d3f10e8f73f3d1de04693da8bdfa1db703e7c139b256c4a7af883873be7c44f0d1447ec8ef8d1b14c362d988a095751bd72067608593193ded80889d35178d
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SSDEEP
98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P593R:+DqPe1Cxcxk3ZAEUadzR
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3151) 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 3344 mssecsvc.exe 4716 mssecsvc.exe 3612 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 2680 wrote to memory of 1512 2680 rundll32.exe rundll32.exe PID 2680 wrote to memory of 1512 2680 rundll32.exe rundll32.exe PID 2680 wrote to memory of 1512 2680 rundll32.exe rundll32.exe PID 1512 wrote to memory of 3344 1512 rundll32.exe mssecsvc.exe PID 1512 wrote to memory of 3344 1512 rundll32.exe mssecsvc.exe PID 1512 wrote to memory of 3344 1512 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\8932eb4a6adcb1f00e3ed8fe72af3324_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2680 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\8932eb4a6adcb1f00e3ed8fe72af3324_JaffaCakes118.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1512 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3344 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:3612
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe -m security1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:4716
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD560098f96f13ec5cec860d8c64b207788
SHA1935cfbc9d6bb786fd9302d4f40030ced98430a0f
SHA25623a8a51c01969975d4745a39d4788b9ed04d46bc18787d9273dfbd3f97608826
SHA512bd8d27acacddbe0c24a4d61673128c2d78c5c3aaf013cc560105a277ea1414a7bc8fa651ac81b88910604ad2e0eb0f184163aaf68d20c53f38b662dcb0eab393
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C:\Windows\tasksche.exeFilesize
3.4MB
MD5c91f708b05cc06b554f544205943ca39
SHA1ec2bc4509e57213d1ae68889b0a4db06035eb1fb
SHA25697cc09ddf777eed3e868ff151e3191fd5439179e44b24cf14b72bb7c54c31b82
SHA512676ec83f97e50ef633bef575f210a5328b4f7a7e203c53674dd761afa48efcdc9fe4aa5cd56e4cf3fadab3147266807553f38a875e7c6ecfe27fbbf3715a5d20