6c786e16221406c824d9dce4e440c1b74a4710cd3f79cec8a01b3cb1d573166c

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06/09/2024, 14:49

Target

a0cd3d0bfbce122bd208f3261af74a50N.dll
Size

137KB
MD5

a0cd3d0bfbce122bd208f3261af74a50
SHA1

bc82779c5640f432f48b1be63b7efbedc6e212c8
SHA256

6c786e16221406c824d9dce4e440c1b74a4710cd3f79cec8a01b3cb1d573166c
SHA512

4a27418b270b484eb82796214cc8fe3dc5880e24fa88c1d4dbdd141691bbf6ef6d66aeab388eb3fc2ad2b91a23caa4c3ffdefce0dc1b48e69a8d14fe67bf7345
SSDEEP

3072:aR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUu3:P25GgFny61mra5

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
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor\Driver = "scsimon.dll"	rundll32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor	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
788	1964	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 2112 wrote to memory of 1964	2112	rundll32.exe	30
PID 2112 wrote to memory of 1964	2112	rundll32.exe	30
PID 2112 wrote to memory of 1964	2112	rundll32.exe	30
PID 2112 wrote to memory of 1964	2112	rundll32.exe	30
PID 2112 wrote to memory of 1964	2112	rundll32.exe	30
PID 2112 wrote to memory of 1964	2112	rundll32.exe	30
PID 2112 wrote to memory of 1964	2112	rundll32.exe	30
PID 1964 wrote to memory of 788	1964	rundll32.exe	31
PID 1964 wrote to memory of 788	1964	rundll32.exe	31
PID 1964 wrote to memory of 788	1964	rundll32.exe	31
PID 1964 wrote to memory of 788	1964	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a0cd3d0bfbce122bd208f3261af74a50N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a0cd3d0bfbce122bd208f3261af74a50N.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:1964
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1964 -s 228
    3⤵
    - Program crash
    PID:788

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:2536