Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
15-04-2024 22:49
Static task
static1
Behavioral task
behavioral1
Sample
f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe
Resource
win10v2004-20240412-en
General
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Target
f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe
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Size
11.0MB
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MD5
f21b1d37cc4a41eb2dfde780fa798b93
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SHA1
0c72b83f361d3e80e02cc0865f418f6c0ce2b364
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SHA256
202c56cd60883f77bd154c3c45240a558edfe75f8480646e301256383f067b1f
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SHA512
c4d1c452b8192385023271d5c9085cb0ede9f00a754fbf9caad3a8fc06da66ff6d47ffdfb1bf2a69e176211d83ef8c05ec18df54fbd8d3cae287700a0579cdaa
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SSDEEP
6144:dJuJ6WaImz/SmCBZ0DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDz:vubnW/Sm
Malware Config
Extracted
tofsee
43.231.4.7
lazystax.ru
Signatures
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Creates new service(s) 1 TTPs
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Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 716 netsh.exe -
Sets service image path in registry 2 TTPs 1 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\tnwlfxjs\ImagePath = "C:\\Windows\\SysWOW64\\tnwlfxjs\\cxxeamcu.exe" svchost.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe -
Deletes itself 1 IoCs
Processes:
svchost.exepid process 2296 svchost.exe -
Executes dropped EXE 1 IoCs
Processes:
cxxeamcu.exepid process 4648 cxxeamcu.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
cxxeamcu.exedescription pid process target process PID 4648 set thread context of 2296 4648 cxxeamcu.exe svchost.exe -
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.
Processes:
sc.exesc.exesc.exepid process 388 sc.exe 1572 sc.exe 4412 sc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 23 IoCs
Processes:
f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.execxxeamcu.exedescription pid process target process PID 4020 wrote to memory of 4520 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe cmd.exe PID 4020 wrote to memory of 4520 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe cmd.exe PID 4020 wrote to memory of 4520 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe cmd.exe PID 4020 wrote to memory of 3496 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe cmd.exe PID 4020 wrote to memory of 3496 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe cmd.exe PID 4020 wrote to memory of 3496 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe cmd.exe PID 4020 wrote to memory of 4412 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe sc.exe PID 4020 wrote to memory of 4412 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe sc.exe PID 4020 wrote to memory of 4412 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe sc.exe PID 4020 wrote to memory of 388 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe sc.exe PID 4020 wrote to memory of 388 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe sc.exe PID 4020 wrote to memory of 388 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe sc.exe PID 4020 wrote to memory of 1572 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe sc.exe PID 4020 wrote to memory of 1572 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe sc.exe PID 4020 wrote to memory of 1572 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe sc.exe PID 4648 wrote to memory of 2296 4648 cxxeamcu.exe svchost.exe PID 4648 wrote to memory of 2296 4648 cxxeamcu.exe svchost.exe PID 4648 wrote to memory of 2296 4648 cxxeamcu.exe svchost.exe PID 4648 wrote to memory of 2296 4648 cxxeamcu.exe svchost.exe PID 4648 wrote to memory of 2296 4648 cxxeamcu.exe svchost.exe PID 4020 wrote to memory of 716 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe netsh.exe PID 4020 wrote to memory of 716 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe netsh.exe PID 4020 wrote to memory of 716 4020 f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4020 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tnwlfxjs\2⤵PID:4520
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cxxeamcu.exe" C:\Windows\SysWOW64\tnwlfxjs\2⤵PID:3496
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create tnwlfxjs binPath= "C:\Windows\SysWOW64\tnwlfxjs\cxxeamcu.exe /d\"C:\Users\Admin\AppData\Local\Temp\f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
PID:4412 -
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description tnwlfxjs "wifi internet conection"2⤵
- Launches sc.exe
PID:388 -
C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start tnwlfxjs2⤵
- Launches sc.exe
PID:1572 -
C:\Windows\SysWOW64\netsh.exe"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul2⤵
- Modifies Windows Firewall
PID:716
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C:\Windows\SysWOW64\tnwlfxjs\cxxeamcu.exeC:\Windows\SysWOW64\tnwlfxjs\cxxeamcu.exe /d"C:\Users\Admin\AppData\Local\Temp\f21b1d37cc4a41eb2dfde780fa798b93_JaffaCakes118.exe"1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4648 -
C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Sets service image path in registry
- Deletes itself
PID:2296
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Replay Monitor
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Downloads
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Filesize
10.1MB
MD52137349fa32b78d750526423066f5d4e
SHA19a9702328885d3a49220439a9d7e9bf974972d73
SHA2567f351b4793446d09281d3ec562f070833680cb47a4a6a55c52cc806bb6bac9c9
SHA51262e817b765efe64d89cf83f096542d149336ff98b792134ec8b34d79c241e84a8249d23190b8ade8ece29be39403f33487813802c975d27617c19df03928de99