cbd8f86243e57968423efbd93e1c1f9415b0cfe2804331eb7804cd0e00c83b18

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
02/03/2025, 05:15

Target

cbd8f86243e57968423efbd93e1c1f9415b0cfe2804331eb7804cd0e00c83b18.dll
Size

137KB
MD5

094ef719bdba1f405286dd44690ef35b
SHA1

ad1437ef90e10ec9526469659075a66f708f6a1c
SHA256

cbd8f86243e57968423efbd93e1c1f9415b0cfe2804331eb7804cd0e00c83b18
SHA512

d6561a01c3e0cb937ff3540815652b152bd4ee6474fd48cbdb94c753f36e499e0d5c0d322244ca62fba6c476067d35cbbceba9c83b5b2ad0a5ebb1b6c473fccf
SSDEEP

3072:zR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuZ:e25GgFny61mraD

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
2972	2916	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 2940 wrote to memory of 2916	2940	rundll32.exe	30
PID 2940 wrote to memory of 2916	2940	rundll32.exe	30
PID 2940 wrote to memory of 2916	2940	rundll32.exe	30
PID 2940 wrote to memory of 2916	2940	rundll32.exe	30
PID 2940 wrote to memory of 2916	2940	rundll32.exe	30
PID 2940 wrote to memory of 2916	2940	rundll32.exe	30
PID 2940 wrote to memory of 2916	2940	rundll32.exe	30
PID 2916 wrote to memory of 2972	2916	rundll32.exe	31
PID 2916 wrote to memory of 2972	2916	rundll32.exe	31
PID 2916 wrote to memory of 2972	2916	rundll32.exe	31
PID 2916 wrote to memory of 2972	2916	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\cbd8f86243e57968423efbd93e1c1f9415b0cfe2804331eb7804cd0e00c83b18.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2940
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\cbd8f86243e57968423efbd93e1c1f9415b0cfe2804331eb7804cd0e00c83b18.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:2916
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2916 -s 228
    3⤵
    - Program crash
    PID:2972

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:3024