Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240704-en -
resource tags
arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system -
submitted
06-07-2024 05:56
Static task
static1
Behavioral task
behavioral1
Sample
27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe
Resource
win7-20240705-en
Behavioral task
behavioral2
Sample
27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe
Resource
win10v2004-20240704-en
General
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Target
27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe
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Size
146KB
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MD5
27778b028fcd6a87de7f7d040c82097c
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SHA1
c32e909132b8d386b78aa537f775046d04268509
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SHA256
1c4d1b7d6eba4fc317664cfa42e77598a59bb0d98e6397e91d502556f4eae9cf
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SHA512
2ff50fed8ca8a32aad175c426b1d57ac1b6728515c9cd9c616e277ef0ee403f0190b3432f8ed6ac13846a38c4a8a652cf552b92e5f14757c8de9f2509884514b
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SSDEEP
3072:yJT1qWN9Ni7DG8/3hcRo080cABosZrxCQSLnXKS08xAFTvbyR:w1qWI7DJ/8cKosDXSxAAR
Malware Config
Extracted
metasploit
encoder/call4_dword_xor
Signatures
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MetaSploit
Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
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Modifies firewall policy service 3 TTPs 8 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications wmpbk86.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpbk86.exe = "C:\\Windows\\SysWOW64\\wmpbk86.exe:*:Enabled:Windows Backup Service" wmpbk86.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List wmpbk86.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile wmpbk86.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications wmpbk86.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\wmpbk86.exe = "C:\\Windows\\SysWOW64\\wmpbk86.exe:*:Enabled:Windows Backup Service" wmpbk86.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List wmpbk86.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile wmpbk86.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2494989678-839960665-2515455429-1000\Control Panel\International\Geo\Nation 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe -
Deletes itself 1 IoCs
pid Process 1568 wmpbk86.exe -
Executes dropped EXE 2 IoCs
pid Process 1952 wmpbk86.exe 1568 wmpbk86.exe -
resource yara_rule behavioral2/memory/1864-0-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral2/memory/1864-2-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral2/memory/1864-3-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral2/memory/1864-4-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral2/memory/1568-43-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral2/memory/1864-44-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral2/memory/1864-45-0x0000000000400000-0x0000000000429000-memory.dmp upx behavioral2/memory/1568-46-0x0000000000400000-0x000000000044C000-memory.dmp upx behavioral2/memory/1568-47-0x0000000000400000-0x000000000044C000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Backup Service = "C:\\Windows\\SysWOW64\\wmpbk86.exe" wmpbk86.exe -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum wmpbk86.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 wmpbk86.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\wmpbk86.exe 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe File created C:\Windows\SysWOW64\wmpbk86.exe 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe File opened for modification C:\Windows\SysWOW64\ wmpbk86.exe File opened for modification C:\Windows\SysWOW64\ 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 916 set thread context of 1864 916 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 83 PID 1952 set thread context of 1568 1952 wmpbk86.exe 87 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 1864 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 1864 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 1864 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 1864 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 1568 wmpbk86.exe 1568 wmpbk86.exe 1568 wmpbk86.exe 1568 wmpbk86.exe -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 916 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe -
Suspicious use of WriteProcessMemory 19 IoCs
description pid Process procid_target PID 916 wrote to memory of 1864 916 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 83 PID 916 wrote to memory of 1864 916 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 83 PID 916 wrote to memory of 1864 916 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 83 PID 916 wrote to memory of 1864 916 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 83 PID 916 wrote to memory of 1864 916 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 83 PID 916 wrote to memory of 1864 916 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 83 PID 916 wrote to memory of 1864 916 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 83 PID 1864 wrote to memory of 1952 1864 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 86 PID 1864 wrote to memory of 1952 1864 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 86 PID 1864 wrote to memory of 1952 1864 27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe 86 PID 1952 wrote to memory of 1568 1952 wmpbk86.exe 87 PID 1952 wrote to memory of 1568 1952 wmpbk86.exe 87 PID 1952 wrote to memory of 1568 1952 wmpbk86.exe 87 PID 1952 wrote to memory of 1568 1952 wmpbk86.exe 87 PID 1952 wrote to memory of 1568 1952 wmpbk86.exe 87 PID 1952 wrote to memory of 1568 1952 wmpbk86.exe 87 PID 1952 wrote to memory of 1568 1952 wmpbk86.exe 87 PID 1568 wrote to memory of 3420 1568 wmpbk86.exe 55 PID 1568 wrote to memory of 3420 1568 wmpbk86.exe 55
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:3420
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C:\Users\Admin\AppData\Local\Temp\27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:916 -
C:\Users\Admin\AppData\Local\Temp\27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\27778b028fcd6a87de7f7d040c82097c_JaffaCakes118.exe"3⤵
- Checks computer location settings
- Maps connected drives based on registry
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1864 -
C:\Windows\SysWOW64\wmpbk86.exe"C:\Windows\SysWOW64\wmpbk86.exe" C:\Users\Admin\AppData\Local\Temp\27778B~1.EXE4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1952 -
C:\Windows\SysWOW64\wmpbk86.exe"C:\Windows\SysWOW64\wmpbk86.exe" C:\Users\Admin\AppData\Local\Temp\27778B~1.EXE5⤵
- Modifies firewall policy service
- Deletes itself
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1568
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
146KB
MD527778b028fcd6a87de7f7d040c82097c
SHA1c32e909132b8d386b78aa537f775046d04268509
SHA2561c4d1b7d6eba4fc317664cfa42e77598a59bb0d98e6397e91d502556f4eae9cf
SHA5122ff50fed8ca8a32aad175c426b1d57ac1b6728515c9cd9c616e277ef0ee403f0190b3432f8ed6ac13846a38c4a8a652cf552b92e5f14757c8de9f2509884514b