f6583e27aa8b2359843bf795db66c535495de14e51afa21b0bf5af84692e297d

Analysis

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

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
03/03/2025, 06:39

Target

f6583e27aa8b2359843bf795db66c535495de14e51afa21b0bf5af84692e297d.dll
Size

137KB
MD5

7b272ddd99c4860b50a2103408c55490
SHA1

26b6a4b0377e95c810f835e2446f24e48c18081c
SHA256

f6583e27aa8b2359843bf795db66c535495de14e51afa21b0bf5af84692e297d
SHA512

b2f3a436bb768e97640e0b34ed766b3d89e694d86d047fef5274e08264a5f1c0ec03dacbc3fde9703541da1e149f27e9aa79e25154c5ea11693bb86fae629188
SSDEEP

3072:fR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUug:i25GgFny61mraK

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 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
2404	1960	WerFault.exe	31

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 1880 wrote to memory of 1960	1880	rundll32.exe	31
PID 1880 wrote to memory of 1960	1880	rundll32.exe	31
PID 1880 wrote to memory of 1960	1880	rundll32.exe	31
PID 1880 wrote to memory of 1960	1880	rundll32.exe	31
PID 1880 wrote to memory of 1960	1880	rundll32.exe	31
PID 1880 wrote to memory of 1960	1880	rundll32.exe	31
PID 1880 wrote to memory of 1960	1880	rundll32.exe	31
PID 1960 wrote to memory of 2404	1960	rundll32.exe	32
PID 1960 wrote to memory of 2404	1960	rundll32.exe	32
PID 1960 wrote to memory of 2404	1960	rundll32.exe	32
PID 1960 wrote to memory of 2404	1960	rundll32.exe	32

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f6583e27aa8b2359843bf795db66c535495de14e51afa21b0bf5af84692e297d.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1880
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f6583e27aa8b2359843bf795db66c535495de14e51afa21b0bf5af84692e297d.dll,#1
  2⤵
  - Boot or Logon Autostart Execution: Port Monitors
  - Sets service image path in registry
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1960
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1960 -s 232
    3⤵
    - Program crash
    PID:2404