8b3af80be1b6785a38df366f35eaaddcda5ad9c8d2ce816c822b1c643bbfed35

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
02/03/2025, 01:50

Target

8b3af80be1b6785a38df366f35eaaddcda5ad9c8d2ce816c822b1c643bbfed35.dll
Size

137KB
MD5

c424f5db0f3b915b036f98d282538f09
SHA1

d5f5b014d26173762d13c3ac0eaecbaf1d6dbae6
SHA256

8b3af80be1b6785a38df366f35eaaddcda5ad9c8d2ce816c822b1c643bbfed35
SHA512

c093442865215d233f9ad72ea17895fb47324321dba5c73a2b456fabc91c4638bf575d36ecd4ad8f5e6fb46431e8dcb1d4b88f881ffb03a82fffd8679bd26bc2
SSDEEP

3072:QR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuo:125GgFny61mraK

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
1444	2592	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 2624 wrote to memory of 2592	2624	rundll32.exe	30
PID 2624 wrote to memory of 2592	2624	rundll32.exe	30
PID 2624 wrote to memory of 2592	2624	rundll32.exe	30
PID 2624 wrote to memory of 2592	2624	rundll32.exe	30
PID 2624 wrote to memory of 2592	2624	rundll32.exe	30
PID 2624 wrote to memory of 2592	2624	rundll32.exe	30
PID 2624 wrote to memory of 2592	2624	rundll32.exe	30
PID 2592 wrote to memory of 1444	2592	rundll32.exe	31
PID 2592 wrote to memory of 1444	2592	rundll32.exe	31
PID 2592 wrote to memory of 1444	2592	rundll32.exe	31
PID 2592 wrote to memory of 1444	2592	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8b3af80be1b6785a38df366f35eaaddcda5ad9c8d2ce816c822b1c643bbfed35.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2624
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\8b3af80be1b6785a38df366f35eaaddcda5ad9c8d2ce816c822b1c643bbfed35.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:2592
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2592 -s 228
    3⤵
    - Program crash
    PID:1444