f56ac872713659451c67a1a7e5e50f402c81f5975fcd93a466277c7425ba573e

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06/03/2025, 14:56

Target

f56ac872713659451c67a1a7e5e50f402c81f5975fcd93a466277c7425ba573e.dll
Size

137KB
MD5

2ca6591eeb9e7d4c09f6fd3edbe9d1be
SHA1

c21cd04730d8b37732411768f75b70fabe9be40e
SHA256

f56ac872713659451c67a1a7e5e50f402c81f5975fcd93a466277c7425ba573e
SHA512

44511407ca10e70ad0374c57e4ff39d6c559b20badb309fb06e5697e5bb54b5105bb3e857d71381311133dc3555b9fe3fff9a8743864e508d32509aa2771eede
SSDEEP

3072:mR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuY:D25GgFny61mra+

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
2696	1276	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 2224 wrote to memory of 1276	2224	rundll32.exe	31
PID 2224 wrote to memory of 1276	2224	rundll32.exe	31
PID 2224 wrote to memory of 1276	2224	rundll32.exe	31
PID 2224 wrote to memory of 1276	2224	rundll32.exe	31
PID 2224 wrote to memory of 1276	2224	rundll32.exe	31
PID 2224 wrote to memory of 1276	2224	rundll32.exe	31
PID 2224 wrote to memory of 1276	2224	rundll32.exe	31
PID 1276 wrote to memory of 2696	1276	rundll32.exe	32
PID 1276 wrote to memory of 2696	1276	rundll32.exe	32
PID 1276 wrote to memory of 2696	1276	rundll32.exe	32
PID 1276 wrote to memory of 2696	1276	rundll32.exe	32

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f56ac872713659451c67a1a7e5e50f402c81f5975fcd93a466277c7425ba573e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f56ac872713659451c67a1a7e5e50f402c81f5975fcd93a466277c7425ba573e.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:1276
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1276 -s 228
    3⤵
    - Program crash
    PID:2696

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:2896