Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
21-05-2024 14:43
Static task
static1
Behavioral task
behavioral1
Sample
63a991006af2616ad323958bbd347c90_JaffaCakes118.dll
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
63a991006af2616ad323958bbd347c90_JaffaCakes118.dll
Resource
win10v2004-20240508-en
General
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Target
63a991006af2616ad323958bbd347c90_JaffaCakes118.dll
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Size
5.0MB
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MD5
63a991006af2616ad323958bbd347c90
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SHA1
cc0d90b22aa8053ea9e132889bca45e43ca900ac
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SHA256
253d832ea20c6faee0825c1926b2412686c83f9f1521a7817bd91df1ae0208e6
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SHA512
ac5abaf38c705713051debaf9f0133ee26eb53aff619e9a747d916b4861abf254a0cacd45b76207053e5fd849127716526779b856b4507102dfd63b819bf2144
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SSDEEP
49152:SnAQqMSPbcBV3GGafYzflm+fZTFZIGayscOqd2vC0+KtARUbfMpr7WvCS:+DqPoBQ+iUP0e9y0lWCS
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3138) 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 2968 mssecsvc.exe 2148 mssecsvc.exe 2716 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 System32 directory 1 IoCs
Processes:
mssecsvc.exedescription ioc process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat mssecsvc.exe -
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 24 IoCs
Processes:
mssecsvc.exedescription ioc process Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{869C47FF-AE31-46E8-BE02-A26D98385553}\WpadDecision = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-49-19-7d-c6-ed mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-49-19-7d-c6-ed\WpadDecision = "0" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{869C47FF-AE31-46E8-BE02-A26D98385553}\WpadDecisionTime = b099c5448dabda01 mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{869C47FF-AE31-46E8-BE02-A26D98385553}\WpadNetworkName = "Network 3" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-49-19-7d-c6-ed\WpadDecisionTime = b099c5448dabda01 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{869C47FF-AE31-46E8-BE02-A26D98385553} mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f0047000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{869C47FF-AE31-46E8-BE02-A26D98385553}\WpadDecisionReason = "1" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 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\UNCAsIntranet = "0" mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\f6-49-19-7d-c6-ed\WpadDecisionReason = "1" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{869C47FF-AE31-46E8-BE02-A26D98385553}\f6-49-19-7d-c6-ed mssecsvc.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2888 wrote to memory of 2952 2888 rundll32.exe rundll32.exe PID 2888 wrote to memory of 2952 2888 rundll32.exe rundll32.exe PID 2888 wrote to memory of 2952 2888 rundll32.exe rundll32.exe PID 2888 wrote to memory of 2952 2888 rundll32.exe rundll32.exe PID 2888 wrote to memory of 2952 2888 rundll32.exe rundll32.exe PID 2888 wrote to memory of 2952 2888 rundll32.exe rundll32.exe PID 2888 wrote to memory of 2952 2888 rundll32.exe rundll32.exe PID 2952 wrote to memory of 2968 2952 rundll32.exe mssecsvc.exe PID 2952 wrote to memory of 2968 2952 rundll32.exe mssecsvc.exe PID 2952 wrote to memory of 2968 2952 rundll32.exe mssecsvc.exe PID 2952 wrote to memory of 2968 2952 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\63a991006af2616ad323958bbd347c90_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\63a991006af2616ad323958bbd347c90_JaffaCakes118.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
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C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
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C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe -m security1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD5e3470119fcdc427ded9b855266f82519
SHA139e9310121959419626d3b22006b0376d78cdd32
SHA256ced86f4c57c78f324255ff9a9155bee14666c8071c0ffa3259f2758bbd90887a
SHA512dceec1e2396caca65cebe9bc4012d70bde61c3e499056dae3ab383c0345d3875cb607b9532ce078bae3c8658cb69861bd7d3627ad393ad22e85431e8335881c4
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C:\Windows\tasksche.exeFilesize
3.4MB
MD501916ac258df00f20ba378fc16171988
SHA198b55baf8f888c32dff7243d8aa101b55b95935c
SHA256c05c1eb1a71ad332cb0c3121f66626408770489589510eec49f804167df44508
SHA512daed04dce12a91bc362a524df194fdb01c5a753b0580950f5eefd1575b94aed6c73a8ddc421a41eb78e99d82d528b62d16b561b353ca9e24a284c38af6d2fa71