835b421866056272b99e15e2f49f70c4977a64a14422402be11b53563cfbdf57

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10/03/2025, 02:28

Target

835b421866056272b99e15e2f49f70c4977a64a14422402be11b53563cfbdf57.dll
Size

137KB
MD5

615e78ad60aed20a9dc2aafa072ebfa0
SHA1

c48ea5980fdf5b4e3db4cb2754ef14294d43b2a3
SHA256

835b421866056272b99e15e2f49f70c4977a64a14422402be11b53563cfbdf57
SHA512

e6bdf968a2cf2599c6be9c978873dd0bf6d1a8a944a3ec1c16b8e10eb37d8a443f199ee6cbf335dc76be3ed6e4e856fb28d64a5588c2e749e9995b4691939dd4
SSDEEP

3072:NR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuu:A25GgFny61mra0

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2992	2352	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 2084 wrote to memory of 2352	2084	rundll32.exe	30
PID 2084 wrote to memory of 2352	2084	rundll32.exe	30
PID 2084 wrote to memory of 2352	2084	rundll32.exe	30
PID 2084 wrote to memory of 2352	2084	rundll32.exe	30
PID 2084 wrote to memory of 2352	2084	rundll32.exe	30
PID 2084 wrote to memory of 2352	2084	rundll32.exe	30
PID 2084 wrote to memory of 2352	2084	rundll32.exe	30
PID 2352 wrote to memory of 2992	2352	rundll32.exe	31
PID 2352 wrote to memory of 2992	2352	rundll32.exe	31
PID 2352 wrote to memory of 2992	2352	rundll32.exe	31
PID 2352 wrote to memory of 2992	2352	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\835b421866056272b99e15e2f49f70c4977a64a14422402be11b53563cfbdf57.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\835b421866056272b99e15e2f49f70c4977a64a14422402be11b53563cfbdf57.dll,#1
  2⤵
  - Boot or Logon Autostart Execution: Port Monitors
  - Sets service image path in registry
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2352
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2352 -s 228
    3⤵
    - Program crash
    PID:2992