4d0739e29fbb0ac6129a7d9346181cd57007829a4effc5b109ffd2f076b48ada

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
06/03/2025, 01:06

Target

4d0739e29fbb0ac6129a7d9346181cd57007829a4effc5b109ffd2f076b48ada.dll
Size

137KB
MD5

256239d6d93f9bfec7e11ade687a349f
SHA1

1248f96c11c35b9777be49372e19ff0614fe831d
SHA256

4d0739e29fbb0ac6129a7d9346181cd57007829a4effc5b109ffd2f076b48ada
SHA512

e8cad613e22f395e5c88051157f7d65bca1b026c1b88b9dd7b108bc68862be94ffcb8ca3cbff41930936a570b9c01daad6782efc8ea16a98af0d9b5e957cf649
SSDEEP

3072:IR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuq:d25GgFny61mraQ

Score

8^/10

Boot or Logon Autostart Execution: Port Monitors 1 TTPs 2 IoCs

Adversaries may use port monitors to run an adversary supplied DLL during system boot for persistence or privilege escalation.

Port Monitors

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor\Driver = "scsimon.dll"	rundll32.exe

Sets service image path in registry 2 TTPs 1 IoCs

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Spooler\ImagePath = "Spoolsv.exe"	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\com\comb.dll	rundll32.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\AppPatch\ComBack.Dll	rundll32.exe
File created	C:\Windows\AppPatch\ComBack.Dll	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2756	2680	WerFault.exe	30

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

System Language Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 2680	2324	rundll32.exe	30
PID 2324 wrote to memory of 2680	2324	rundll32.exe	30
PID 2324 wrote to memory of 2680	2324	rundll32.exe	30
PID 2324 wrote to memory of 2680	2324	rundll32.exe	30
PID 2324 wrote to memory of 2680	2324	rundll32.exe	30
PID 2324 wrote to memory of 2680	2324	rundll32.exe	30
PID 2324 wrote to memory of 2680	2324	rundll32.exe	30
PID 2680 wrote to memory of 2756	2680	rundll32.exe	31
PID 2680 wrote to memory of 2756	2680	rundll32.exe	31
PID 2680 wrote to memory of 2756	2680	rundll32.exe	31
PID 2680 wrote to memory of 2756	2680	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4d0739e29fbb0ac6129a7d9346181cd57007829a4effc5b109ffd2f076b48ada.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4d0739e29fbb0ac6129a7d9346181cd57007829a4effc5b109ffd2f076b48ada.dll,#1
  2⤵
  - Boot or Logon Autostart Execution: Port Monitors
  - Sets service image path in registry
  - Drops file in System32 directory
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2680
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2680 -s 228
    3⤵
    - Program crash
    PID:2756

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:2588