3d0420e1355895fd439cbe2747e00fa74a2526566d141663ba6b7bf14c8ed53b

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05/03/2025, 23:47

Target

3d0420e1355895fd439cbe2747e00fa74a2526566d141663ba6b7bf14c8ed53b.dll
Size

137KB
MD5

923dac5a392381b780f84b030fd9245d
SHA1

a568ffabdea335a7cbaa8823b6a7903a3b774676
SHA256

3d0420e1355895fd439cbe2747e00fa74a2526566d141663ba6b7bf14c8ed53b
SHA512

c30c079fa04918811410f5825b8df9a1539cf01e7dfd4b84ae83224c70ed9aa8e90a7775b954229a589cdd685c092a47ebdf90c475438a28d66c2feaa4e9ede3
SSDEEP

3072:rR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuj:G25GgFny61mraB

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
2404	1860	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 2364 wrote to memory of 1860	2364	rundll32.exe	30
PID 2364 wrote to memory of 1860	2364	rundll32.exe	30
PID 2364 wrote to memory of 1860	2364	rundll32.exe	30
PID 2364 wrote to memory of 1860	2364	rundll32.exe	30
PID 2364 wrote to memory of 1860	2364	rundll32.exe	30
PID 2364 wrote to memory of 1860	2364	rundll32.exe	30
PID 2364 wrote to memory of 1860	2364	rundll32.exe	30
PID 1860 wrote to memory of 2404	1860	rundll32.exe	31
PID 1860 wrote to memory of 2404	1860	rundll32.exe	31
PID 1860 wrote to memory of 2404	1860	rundll32.exe	31
PID 1860 wrote to memory of 2404	1860	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3d0420e1355895fd439cbe2747e00fa74a2526566d141663ba6b7bf14c8ed53b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3d0420e1355895fd439cbe2747e00fa74a2526566d141663ba6b7bf14c8ed53b.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:1860
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1860 -s 232
    3⤵
    - Program crash
    PID:2404