38631d13af618e43ff6ebf9ffa739130aa8a3c4006cee88a612f79612f9d0311

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
03/03/2025, 22:03

Target

38631d13af618e43ff6ebf9ffa739130aa8a3c4006cee88a612f79612f9d0311.dll
Size

137KB
MD5

6d90d89b883187df28e600efa91c625f
SHA1

bdb6ee6e5ae5f05e992759b1ba59d07457db9a7a
SHA256

38631d13af618e43ff6ebf9ffa739130aa8a3c4006cee88a612f79612f9d0311
SHA512

a4947054764855f325685574515c27c98d1eac9b56376ef15688994ee20904b8b80ea0a58f2d38206ab161b50a8b3afa4834a52a0f663e040c3dd2202e205df0
SSDEEP

3072:eR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuX:L25GgFny61mrax

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
2140	2752	WerFault.exe	28

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 2476 wrote to memory of 2752	2476	rundll32.exe	28
PID 2476 wrote to memory of 2752	2476	rundll32.exe	28
PID 2476 wrote to memory of 2752	2476	rundll32.exe	28
PID 2476 wrote to memory of 2752	2476	rundll32.exe	28
PID 2476 wrote to memory of 2752	2476	rundll32.exe	28
PID 2476 wrote to memory of 2752	2476	rundll32.exe	28
PID 2476 wrote to memory of 2752	2476	rundll32.exe	28
PID 2752 wrote to memory of 2140	2752	rundll32.exe	29
PID 2752 wrote to memory of 2140	2752	rundll32.exe	29
PID 2752 wrote to memory of 2140	2752	rundll32.exe	29
PID 2752 wrote to memory of 2140	2752	rundll32.exe	29

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\38631d13af618e43ff6ebf9ffa739130aa8a3c4006cee88a612f79612f9d0311.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2476
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\38631d13af618e43ff6ebf9ffa739130aa8a3c4006cee88a612f79612f9d0311.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:2752
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2752 -s 228
    3⤵
    - Program crash
    PID:2140