Analysis
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max time kernel
2s -
max time network
0s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
16-06-2024 06:52
Static task
static1
Behavioral task
behavioral1
Sample
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe
Resource
win7-20240508-en
Errors
General
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Target
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe
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Size
311KB
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MD5
b238789b81c0072f170d0e067a2914e5
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SHA1
829533ac0ccdefa2657b88a11aec99480e6d2e43
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SHA256
0ba5316465a017586abd9cae225713d848097e07a6ca673aa5150c7c5c38f3ff
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SHA512
87e141db93e168d612b41693f1d5a803676e43b980bce2fd9692f008436e30d5d590badd965e0529e22e55fcfc230f1dac4384b7062d2339bf4a12617f2e8e23
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SSDEEP
6144:cTgRHbYXdFH4opcQPTlUn+0kbEsRBQgBWBYWrghs7bS:wgRHE4gTlU+rbEsRBHYK2TS
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 2 IoCs
Processes:
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,,C:\\Users\\Admin\\AppData\\Local\\nhxbjnmc\\vnprfsty.exe" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,C:\\Users\\Admin\\AppData\\Local\\nhxbjnmc\\vnprfsty.exe" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe -
Modifies firewall policy service 2 TTPs 3 IoCs
Processes:
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe -
Modifies security service 2 TTPs 4 IoCs
Processes:
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wscsvc\Start = "4" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MpsSvc\Start = "4" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\WinDefend\Start = "4" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\wuauserv\Start = "4" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe -
Processes:
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe -
Processes:
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe -
Drops startup file 2 IoCs
Processes:
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vnprfsty.exe b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vnprfsty.exe b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe -
Processes:
resource yara_rule behavioral1/memory/2068-4-0x0000000015190000-0x00000000151CD000-memory.dmp upx behavioral1/memory/2068-8-0x0000000015190000-0x00000000151CD000-memory.dmp upx behavioral1/memory/2068-7-0x0000000015190000-0x00000000151CD000-memory.dmp upx behavioral1/memory/2068-6-0x0000000015190000-0x00000000151CD000-memory.dmp upx -
Processes:
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UacDisableNotify = "1" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\VnpRfsty = "C:\\Users\\Admin\\AppData\\Local\\nhxbjnmc\\vnprfsty.exe" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe -
Processes:
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exedescription pid process target process PID 848 set thread context of 2068 848 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exepid process 2068 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe 2068 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exedescription pid process Token: SeSecurityPrivilege 2068 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Token: SeRestorePrivilege 2068 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Token: SeBackupPrivilege 2068 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe Token: SeShutdownPrivilege 2068 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exedescription pid process target process PID 848 wrote to memory of 2068 848 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe PID 848 wrote to memory of 2068 848 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe PID 848 wrote to memory of 2068 848 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe PID 848 wrote to memory of 2068 848 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe PID 848 wrote to memory of 2068 848 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe PID 848 wrote to memory of 2068 848 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe PID 848 wrote to memory of 2068 848 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe PID 848 wrote to memory of 2068 848 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe PID 848 wrote to memory of 2068 848 b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe -
System policy modification 1 TTPs 1 IoCs
Processes:
b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:848 -
C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\b238789b81c0072f170d0e067a2914e5_JaffaCakes118.exe"2⤵
- Modifies WinLogon for persistence
- Modifies firewall policy service
- Modifies security service
- UAC bypass
- Windows security bypass
- Drops startup file
- Windows security modification
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- System policy modification
PID:2068
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
2Windows Service
2Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
2Windows Service
2