Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240705-en -
resource tags
arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system -
submitted
13-07-2024 16:22
Static task
static1
Behavioral task
behavioral1
Sample
42708471bba43fab8c0834de27a7a3a4_JaffaCakes118.dll
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
42708471bba43fab8c0834de27a7a3a4_JaffaCakes118.dll
Resource
win10v2004-20240709-en
General
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Target
42708471bba43fab8c0834de27a7a3a4_JaffaCakes118.dll
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Size
5.0MB
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MD5
42708471bba43fab8c0834de27a7a3a4
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SHA1
9a87f4a8ce7bfb5e9dda353a0a308f228353bcfe
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SHA256
46d23bc35d038fbeaf2c3e86a89c42319560e8a6a4a3fd3bd743d96f2b49f238
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SHA512
bae3fe3021fe0ef0f5a16e9db9a51630daac987c984f673aabab6cd14bf6f88855699c71b6ff97322dbd08e1c5e1c861d7dc117095ad372525d75e8abd47906d
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SSDEEP
98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2:+DqPe1Cxcxk3ZAEUadzR8yc4
Malware Config
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Contacts a large (3179) 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 636 mssecsvc.exe 2492 mssecsvc.exe 2756 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 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 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\{AB2E5818-1909-44E3-B2EF-36996EA1F101}\WpadDecisionReason = "1" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d2-63-38-69-33-42\WpadDecisionTime = 00cdaad640d5da01 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\5.0\Cache\Cookies\CachePrefix = "Cookie:" mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f00c3000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AB2E5818-1909-44E3-B2EF-36996EA1F101}\WpadDecision = "0" mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d2-63-38-69-33-42 mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d2-63-38-69-33-42\WpadDecisionReason = "1" mssecsvc.exe Set value (int) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d2-63-38-69-33-42\WpadDecision = "0" 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 (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\Content\CachePrefix mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AB2E5818-1909-44E3-B2EF-36996EA1F101} mssecsvc.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AB2E5818-1909-44E3-B2EF-36996EA1F101}\WpadNetworkName = "Network 3" 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\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 mssecsvc.exe Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AB2E5818-1909-44E3-B2EF-36996EA1F101}\WpadDecisionTime = 00cdaad640d5da01 mssecsvc.exe Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{AB2E5818-1909-44E3-B2EF-36996EA1F101}\d2-63-38-69-33-42 mssecsvc.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 2056 wrote to memory of 2404 2056 rundll32.exe rundll32.exe PID 2056 wrote to memory of 2404 2056 rundll32.exe rundll32.exe PID 2056 wrote to memory of 2404 2056 rundll32.exe rundll32.exe PID 2056 wrote to memory of 2404 2056 rundll32.exe rundll32.exe PID 2056 wrote to memory of 2404 2056 rundll32.exe rundll32.exe PID 2056 wrote to memory of 2404 2056 rundll32.exe rundll32.exe PID 2056 wrote to memory of 2404 2056 rundll32.exe rundll32.exe PID 2404 wrote to memory of 636 2404 rundll32.exe mssecsvc.exe PID 2404 wrote to memory of 636 2404 rundll32.exe mssecsvc.exe PID 2404 wrote to memory of 636 2404 rundll32.exe mssecsvc.exe PID 2404 wrote to memory of 636 2404 rundll32.exe mssecsvc.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\42708471bba43fab8c0834de27a7a3a4_JaffaCakes118.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2056 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\42708471bba43fab8c0834de27a7a3a4_JaffaCakes118.dll,#12⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2404 -
C:\WINDOWS\mssecsvc.exeC:\WINDOWS\mssecsvc.exe3⤵
- Executes dropped EXE
- Drops file in Windows directory
PID:636 -
C:\WINDOWS\tasksche.exeC:\WINDOWS\tasksche.exe /i4⤵
- Executes dropped EXE
PID:2756
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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:2492
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.6MB
MD57d6e0f7ee20eefad8ccf2bd89abc1691
SHA1a5b6fae7eabbbc52d3514b0af036dd5fe9134eed
SHA256b4c3c0d59da89f08f9a0e2d8703548a0734b498862397b8301db7527e207f6cb
SHA512532f6afd1b382b346a07ec2538b51d1bae5608b169dfe62ca0424196e9f15e68643f3c2d0d0ceca9bc82a1178dd85d213dbd91b63730bce6329d0ab23c9430e0
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Filesize
3.4MB
MD53345ae752bf8ce297ee33bed8ef8dffd
SHA182ccecde64722d21b0a2c9f5d803145997fb7940
SHA2567b52ecf501e14a1d634b8e67bd75f2ae810de38373803b165e0146ceeb308471
SHA512409ffd2a0d26d4e5b1954116b3860a92289abcbce84d266008943011ba9b0728b51ae21732240fccc8475a219a0d3d687c0af9e80fef3b1f33308e357bf2f43e