Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
05-05-2024 00:45
Static task
static1
Behavioral task
behavioral1
Sample
15383b74b2a3c0b39526bb03c6a264ca_JaffaCakes118.dll
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
15383b74b2a3c0b39526bb03c6a264ca_JaffaCakes118.dll
Resource
win10v2004-20240419-en
General
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Target
15383b74b2a3c0b39526bb03c6a264ca_JaffaCakes118.dll
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Size
5.0MB
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MD5
15383b74b2a3c0b39526bb03c6a264ca
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SHA1
96cdbfa321137f0f3c2700faf4e0d3987b3eb2f4
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SHA256
aba57fccc8744a927718aa029ddffd928775761a9baa8acf7df9752d52fd1000
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SHA512
62ca5a18f4aa8f587195e85af3ef5553c88313f7c1d07293f2440b6080576ff4d87636c569e556ee11af960070d26bcaa3e36a25de60b8e44cb373e7061cb25e
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SSDEEP
98304:TDqPoBexcSUDk36SAEdhvxWa9P593R8yAVp2H:TDqP1xcxk3ZAEUadzR8yc4H
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3207) 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 2088 mssecsvc.exe 2488 mssecsvc.exe 2512 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 (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00fb000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1667C4C5-2195-4321-B2B1-D0DFAF127C5B}\WpadDecisionReason = "1" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-64-5f-e0-ef-60\WpadDecisionReason = "1" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1667C4C5-2195-4321-B2B1-D0DFAF127C5B}\4e-64-5f-e0-ef-60 mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-64-5f-e0-ef-60\WpadDecisionTime = f0c50b84859eda01 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 (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0" 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\{1667C4C5-2195-4321-B2B1-D0DFAF127C5B}\WpadDecision = "0" mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1667C4C5-2195-4321-B2B1-D0DFAF127C5B}\WpadNetworkName = "Network 3" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-64-5f-e0-ef-60\WpadDecision = "0" mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 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\{1667C4C5-2195-4321-B2B1-D0DFAF127C5B} 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\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 (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{1667C4C5-2195-4321-B2B1-D0DFAF127C5B}\WpadDecisionTime = f0c50b84859eda01 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\4e-64-5f-e0-ef-60 mssecsvc.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2084 wrote to memory of 2052 2084 rundll32.exe rundll32.exe PID 2084 wrote to memory of 2052 2084 rundll32.exe rundll32.exe PID 2084 wrote to memory of 2052 2084 rundll32.exe rundll32.exe PID 2084 wrote to memory of 2052 2084 rundll32.exe rundll32.exe PID 2084 wrote to memory of 2052 2084 rundll32.exe rundll32.exe PID 2084 wrote to memory of 2052 2084 rundll32.exe rundll32.exe PID 2084 wrote to memory of 2052 2084 rundll32.exe rundll32.exe PID 2052 wrote to memory of 2088 2052 rundll32.exe mssecsvc.exe PID 2052 wrote to memory of 2088 2052 rundll32.exe mssecsvc.exe PID 2052 wrote to memory of 2088 2052 rundll32.exe mssecsvc.exe PID 2052 wrote to memory of 2088 2052 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\15383b74b2a3c0b39526bb03c6a264ca_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2084 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\15383b74b2a3c0b39526bb03c6a264ca_JaffaCakes118.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2052 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:2088 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:2512
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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:2488
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Windows\mssecsvc.exeFilesize
3.6MB
MD55d3c9b1902af41e6c627140ad21ca749
SHA176b3889b86abbe9974b68e6460c0034e9ed8cfa9
SHA2564ce877e4f983b07fe709bf960ea6e85d99256042b039ae60385848c3ffd52b12
SHA512c57fe88910b8d20f05cabc2accb9ccb56c779e43fcb815ac6a3004d915d667cfc847c5803cf20b9a1e2cde8cdf5cba2783736f736a9541ecd3bc4a16e8d41f0e
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C:\Windows\tasksche.exeFilesize
3.4MB
MD58384c90ffabb19fde1a9700dc06f8c5f
SHA19b785093a6d4fae353594f88f4b35399a800d3f9
SHA25674e755c32894955471dabdcc1117b183353c8c1b46710eb7804131a31a6a0630
SHA512c879dedbfc85603cd5c878744c337f3346fa3a546aac0a6fdd09e79507160e64b99c915c8941e57603456b41f621472ba1b2106a2d03894732e004decbd17242