fe92c6548ab93637132bc12a469eab3d36d71974f9841f9fc6f99ebac159d610

Analysis

max time kernel
16s
max time network
16s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
09/03/2025, 00:31

Target

fe92c6548ab93637132bc12a469eab3d36d71974f9841f9fc6f99ebac159d610.dll
Size

137KB
MD5

62b5d2e99d839d618e07fb00a38b314a
SHA1

c1170c5664151ba9fa8478e937d223d94008b27f
SHA256

fe92c6548ab93637132bc12a469eab3d36d71974f9841f9fc6f99ebac159d610
SHA512

ef72256784bc835fe5c39c5bacca05b849a36957095c8b1515438a87d8b8f327f74f794e57fe12adeb8fbfab7cf7498bb34a11e01bfaab7bbf767e5fa9142993
SSDEEP

3072:kR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUu:B25GgFny61mra

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
1084	1740	WerFault.exe	29

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 1756 wrote to memory of 1740	1756	rundll32.exe	29
PID 1756 wrote to memory of 1740	1756	rundll32.exe	29
PID 1756 wrote to memory of 1740	1756	rundll32.exe	29
PID 1756 wrote to memory of 1740	1756	rundll32.exe	29
PID 1756 wrote to memory of 1740	1756	rundll32.exe	29
PID 1756 wrote to memory of 1740	1756	rundll32.exe	29
PID 1756 wrote to memory of 1740	1756	rundll32.exe	29
PID 1740 wrote to memory of 1084	1740	rundll32.exe	30
PID 1740 wrote to memory of 1084	1740	rundll32.exe	30
PID 1740 wrote to memory of 1084	1740	rundll32.exe	30
PID 1740 wrote to memory of 1084	1740	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fe92c6548ab93637132bc12a469eab3d36d71974f9841f9fc6f99ebac159d610.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1756
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fe92c6548ab93637132bc12a469eab3d36d71974f9841f9fc6f99ebac159d610.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:1740
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1740 -s 228
    3⤵
    - Program crash
    PID:1084

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:2768