Analysis
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max time kernel
150s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
14-05-2024 21:01
Static task
static1
Behavioral task
behavioral1
Sample
430fb88c25b9ce5f5f8f6666538a214d_JaffaCakes118.dll
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
430fb88c25b9ce5f5f8f6666538a214d_JaffaCakes118.dll
Resource
win10v2004-20240226-en
General
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Target
430fb88c25b9ce5f5f8f6666538a214d_JaffaCakes118.dll
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Size
5.0MB
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MD5
430fb88c25b9ce5f5f8f6666538a214d
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SHA1
6959809a973e3b4a4a0beec37b1b774e8238ca9b
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SHA256
957d41b5af564362c88ad2a2033c92c60f17d4ca7fe10a6805e7bf346d7b3e56
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SHA512
15452ce796deab26209c95c347b311128fc45a4e324d3bf1eae535585beb3b1cd90df93948d33c354dcc15b377c3fa532a87902fc6b0041b054a2dd1cbbced18
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SSDEEP
49152:SnAQqMSPbcBVQej/1IhJM0H9PAMEcaEau3R8yAH1plAH:+DqPoBhz16Wa9P593R8yAVp2H
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3338) 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 3060 mssecsvc.exe 2928 mssecsvc.exe 2648 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\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00e5000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{84CA21AC-7C5D-4DF8-B743-14A5EC237E4F}\WpadDecision = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a2-fb-9a-10-0d-96 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{84CA21AC-7C5D-4DF8-B743-14A5EC237E4F} mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a2-fb-9a-10-0d-96\WpadDecisionTime = 0050c12442a6da01 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\ZoneMap\UNCAsIntranet = "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 Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{84CA21AC-7C5D-4DF8-B743-14A5EC237E4F}\WpadDecisionReason = "1" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{84CA21AC-7C5D-4DF8-B743-14A5EC237E4F}\WpadDecisionTime = 0050c12442a6da01 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{84CA21AC-7C5D-4DF8-B743-14A5EC237E4F}\a2-fb-9a-10-0d-96 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings 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\History\CachePrefix = "Visited:" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{84CA21AC-7C5D-4DF8-B743-14A5EC237E4F}\WpadNetworkName = "Network 3" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a2-fb-9a-10-0d-96\WpadDecisionReason = "1" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\a2-fb-9a-10-0d-96\WpadDecision = "0" mssecsvc.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 1048 wrote to memory of 2980 1048 rundll32.exe rundll32.exe PID 1048 wrote to memory of 2980 1048 rundll32.exe rundll32.exe PID 1048 wrote to memory of 2980 1048 rundll32.exe rundll32.exe PID 1048 wrote to memory of 2980 1048 rundll32.exe rundll32.exe PID 1048 wrote to memory of 2980 1048 rundll32.exe rundll32.exe PID 1048 wrote to memory of 2980 1048 rundll32.exe rundll32.exe PID 1048 wrote to memory of 2980 1048 rundll32.exe rundll32.exe PID 2980 wrote to memory of 3060 2980 rundll32.exe mssecsvc.exe PID 2980 wrote to memory of 3060 2980 rundll32.exe mssecsvc.exe PID 2980 wrote to memory of 3060 2980 rundll32.exe mssecsvc.exe PID 2980 wrote to memory of 3060 2980 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\430fb88c25b9ce5f5f8f6666538a214d_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1048 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\430fb88c25b9ce5f5f8f6666538a214d_JaffaCakes118.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2980 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:3060 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:2648
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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:2928
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD5b7617437a4242212117fede7742af59c
SHA10b7c9e501adc2a83ed17e77fc2ab317999b010de
SHA2569f3b097e80ab46b255c83242747cc1958c92e8cc08716b363fa0756d8532f6ba
SHA512fcc2b8dd5fe91a8675cd8b4f173f4845ac4ee254c159d69f9d611480e9e67d3c05674b0bdde44584115c663de199aa2fcba31e5fb531dd7b2631b362e144247d
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C:\Windows\tasksche.exeFilesize
3.4MB
MD54dfd668a3c4cdbfaad7e9d4456647581
SHA1fb7b0939abb03c92f6be6af36fa65d2914180576
SHA256edb99870a96bceb131e2c83031490a2738a9bd202c0d20add651472401cc4776
SHA512c50ee5b37850a110036faec679adf4f9a825035c6df4899f2e38da34037901fc1f07e3d703f1ace158a36068d031aa95a8d4adf0190f57203d0d501cbca053e1