Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system -
submitted
09-05-2024 05:59
Static task
static1
Behavioral task
behavioral1
Sample
289b14c50534850a499a14943b3775be_JaffaCakes118.dll
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
289b14c50534850a499a14943b3775be_JaffaCakes118.dll
Resource
win10v2004-20240508-en
General
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Target
289b14c50534850a499a14943b3775be_JaffaCakes118.dll
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Size
5.0MB
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MD5
289b14c50534850a499a14943b3775be
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SHA1
e0f14c10d9ba20507112ba61601a0ea28487acad
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SHA256
5e014f792276618ccc7e7401207fb2758097f440ce28aeb70a024b6ed4251aa1
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SHA512
c297568324027a54c2dd1f0afee95853e7bdd868c4c4870a4a94ed1670d5a3dfda6f653563a7670a5bf0b6c7bd32daf77401624362d665a563277d36e17df703
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SSDEEP
24576:SbLgddQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNL:SnAQqMSPbcBVQej/1IN
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3302) 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 1828 mssecsvc.exe 2608 mssecsvc.exe 2596 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 (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c2-45-61-a8-08-76\WpadDecisionTime = 5067ce20d6a1da01 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c2-45-61-a8-08-76\WpadDecision = "0" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" mssecsvc.exe 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 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\History\CachePrefix = "Visited:" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00cb000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{540C3585-0865-4531-B8F5-452684B2F750} 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 mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{540C3585-0865-4531-B8F5-452684B2F750}\WpadNetworkName = "Network 3" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c2-45-61-a8-08-76 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{540C3585-0865-4531-B8F5-452684B2F750}\WpadDecision = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{540C3585-0865-4531-B8F5-452684B2F750}\c2-45-61-a8-08-76 mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{540C3585-0865-4531-B8F5-452684B2F750}\WpadDecisionTime = 5067ce20d6a1da01 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\c2-45-61-a8-08-76\WpadDecisionReason = "1" 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\Wpad mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{540C3585-0865-4531-B8F5-452684B2F750}\WpadDecisionReason = "1" mssecsvc.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 3000 wrote to memory of 3024 3000 rundll32.exe rundll32.exe PID 3000 wrote to memory of 3024 3000 rundll32.exe rundll32.exe PID 3000 wrote to memory of 3024 3000 rundll32.exe rundll32.exe PID 3000 wrote to memory of 3024 3000 rundll32.exe rundll32.exe PID 3000 wrote to memory of 3024 3000 rundll32.exe rundll32.exe PID 3000 wrote to memory of 3024 3000 rundll32.exe rundll32.exe PID 3000 wrote to memory of 3024 3000 rundll32.exe rundll32.exe PID 3024 wrote to memory of 1828 3024 rundll32.exe mssecsvc.exe PID 3024 wrote to memory of 1828 3024 rundll32.exe mssecsvc.exe PID 3024 wrote to memory of 1828 3024 rundll32.exe mssecsvc.exe PID 3024 wrote to memory of 1828 3024 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\289b14c50534850a499a14943b3775be_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:3000 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\289b14c50534850a499a14943b3775be_JaffaCakes118.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3024 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:1828 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:2596
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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
PID:2608
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD51de10f9b5b1a8855ca5d768597e0878c
SHA193b07fdb478eb6889c396aa7b001fb1ba847aeef
SHA2563c7e60c42691649c40c0f03887bd3214d9f7d59b47674cd6264f3f7969205768
SHA512c4bfc0a2e8d1613ef1e82279f4a47ed43f2ca1be4d8602cd976569cfd7a9f1452626b8caf5059db959d6607b99743fffb1118df7cdeb0e6129c1c56e2604618a
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C:\Windows\tasksche.exeFilesize
3.4MB
MD5eb02357aaece8bba8d7f65bd4896e141
SHA17cb3a5a0aa5e88c3fd56ffcffa8fcf72e5cd874f
SHA25674cbdd1e7cca2c3bae3bbf59eaf93db0a328135d9b260d7acd0a3c74689b6b68
SHA5121c19695ca878add2d0716e6817577a761c9caf856efdf7ca115897ebf3af76d455a17834a7f9105fd67925deb04fdc24637b66f496c035720ae2eb3d84883cd6