Analysis
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max time kernel
150s -
max time network
133s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
16-04-2024 08:47
Static task
static1
Behavioral task
behavioral1
Sample
f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe
Resource
win10v2004-20240412-en
General
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Target
f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe
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Size
10.5MB
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MD5
f31ff6f68ebe392291dbb6214ea9ff92
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SHA1
8502e236e8ae0ff89bff5c17e3697f1e3be2861f
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SHA256
1c080453192d6860817dfd3f7d55054a384f0c5b51661212f38adcb0c6f612bf
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SHA512
680b1e606ace8a65b4fc5480f16ad50c2636981f08faa25df5237e61c2de2ae130969ab363fc201e4bf3be8cd7d5457be31a0d5cdcfbd125ecf4812f6eb9ed91
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SSDEEP
49152:S1yvllllllllllllllllllllllllllllllllllllllllllllllllllllllllllln:SA
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 1696 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\felcyrca\ImagePath = "C:\\Windows\\SysWOW64\\felcyrca\\mhldtege.exe" svchost.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-553605503-2331009851-2137262461-1000\Control Panel\International\Geo\Nation f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe -
Deletes itself 1 IoCs
Processes:
svchost.exepid process 4896 svchost.exe -
Executes dropped EXE 1 IoCs
Processes:
mhldtege.exepid process 4596 mhldtege.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
mhldtege.exedescription pid process target process PID 4596 set thread context of 4896 4596 mhldtege.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 1548 sc.exe 2692 sc.exe 4780 sc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 2 IoCs
Processes:
WerFault.exeWerFault.exepid pid_target process target process 3576 3440 WerFault.exe f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe 3504 4596 WerFault.exe mhldtege.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exemhldtege.exedescription pid process target process PID 3440 wrote to memory of 2156 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe cmd.exe PID 3440 wrote to memory of 2156 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe cmd.exe PID 3440 wrote to memory of 2156 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe cmd.exe PID 3440 wrote to memory of 1940 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe cmd.exe PID 3440 wrote to memory of 1940 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe cmd.exe PID 3440 wrote to memory of 1940 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe cmd.exe PID 3440 wrote to memory of 1548 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe sc.exe PID 3440 wrote to memory of 1548 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe sc.exe PID 3440 wrote to memory of 1548 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe sc.exe PID 3440 wrote to memory of 2692 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe sc.exe PID 3440 wrote to memory of 2692 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe sc.exe PID 3440 wrote to memory of 2692 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe sc.exe PID 3440 wrote to memory of 4780 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe sc.exe PID 3440 wrote to memory of 4780 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe sc.exe PID 3440 wrote to memory of 4780 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe sc.exe PID 3440 wrote to memory of 1696 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe netsh.exe PID 3440 wrote to memory of 1696 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe netsh.exe PID 3440 wrote to memory of 1696 3440 f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe netsh.exe PID 4596 wrote to memory of 4896 4596 mhldtege.exe svchost.exe PID 4596 wrote to memory of 4896 4596 mhldtege.exe svchost.exe PID 4596 wrote to memory of 4896 4596 mhldtege.exe svchost.exe PID 4596 wrote to memory of 4896 4596 mhldtege.exe svchost.exe PID 4596 wrote to memory of 4896 4596 mhldtege.exe svchost.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\felcyrca\2⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mhldtege.exe" C:\Windows\SysWOW64\felcyrca\2⤵
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create felcyrca binPath= "C:\Windows\SysWOW64\felcyrca\mhldtege.exe /d\"C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description felcyrca "wifi internet conection"2⤵
- Launches sc.exe
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start felcyrca2⤵
- Launches sc.exe
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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
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3440 -s 10362⤵
- Program crash
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C:\Windows\SysWOW64\felcyrca\mhldtege.exeC:\Windows\SysWOW64\felcyrca\mhldtege.exe /d"C:\Users\Admin\AppData\Local\Temp\f31ff6f68ebe392291dbb6214ea9ff92_JaffaCakes118.exe"1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Sets service image path in registry
- Deletes itself
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4596 -s 5122⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3440 -ip 34401⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4596 -ip 45961⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Persistence
Create or Modify System Process
2Windows Service
2Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Privilege Escalation
Create or Modify System Process
2Windows Service
2Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\mhldtege.exeFilesize
14.6MB
MD50192a08271aa324f4997e49bc0d602ba
SHA1bcbc77b7ec8121b73fc7cf62a9ecc526228e0380
SHA256249930b85e0f9ea7ed7e1c4179b537da596f6fb39586f7ea50635d48844895f3
SHA512e3828550d6d4de085d8b6c58acf910752be643abf476425321638f38a1fd99504ab5c97939b8e31f4a1a246866a6ca3862d3e0d863544503efae06b6f4ce824c
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memory/3440-1-0x0000000000D30000-0x0000000000E30000-memory.dmpFilesize
1024KB
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memory/3440-2-0x0000000002820000-0x0000000002833000-memory.dmpFilesize
76KB
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memory/3440-4-0x0000000000400000-0x0000000000C20000-memory.dmpFilesize
8.1MB
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memory/3440-7-0x0000000000400000-0x0000000000C20000-memory.dmpFilesize
8.1MB
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memory/3440-8-0x0000000002820000-0x0000000002833000-memory.dmpFilesize
76KB
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memory/4596-10-0x0000000000EB0000-0x0000000000FB0000-memory.dmpFilesize
1024KB
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memory/4596-11-0x0000000000400000-0x0000000000C20000-memory.dmpFilesize
8.1MB
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memory/4596-16-0x0000000000400000-0x0000000000C20000-memory.dmpFilesize
8.1MB
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memory/4896-12-0x0000000000E10000-0x0000000000E25000-memory.dmpFilesize
84KB
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memory/4896-15-0x0000000000E10000-0x0000000000E25000-memory.dmpFilesize
84KB
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memory/4896-17-0x0000000000E10000-0x0000000000E25000-memory.dmpFilesize
84KB
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memory/4896-18-0x0000000000E10000-0x0000000000E25000-memory.dmpFilesize
84KB