bf715a162d58532ff68e58bde821ffb9f2f080d980f0db4c5b6f1fa12906ad1f

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
28/09/2024, 05:31

Target

bf715a162d58532ff68e58bde821ffb9f2f080d980f0db4c5b6f1fa12906ad1fN.dll
Size

137KB
MD5

7e74a8bda81ef61a2fc3055c2d6e1c70
SHA1

2c52f9c919db775de2ecded610699d6d2a27cbde
SHA256

bf715a162d58532ff68e58bde821ffb9f2f080d980f0db4c5b6f1fa12906ad1f
SHA512

835c4a4b1f0ef58da561720910a1ad8b1369cddc90d0acb6cb17728d7c717ce82199414c52f4dd0c69b7ad9f313c2eb2bab76a6a220ed4e8ef9a66e769169f60
SSDEEP

3072:uR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUun:725GgFny61mraR

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 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
2756	2744	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 2688 wrote to memory of 2744	2688	rundll32.exe	30
PID 2688 wrote to memory of 2744	2688	rundll32.exe	30
PID 2688 wrote to memory of 2744	2688	rundll32.exe	30
PID 2688 wrote to memory of 2744	2688	rundll32.exe	30
PID 2688 wrote to memory of 2744	2688	rundll32.exe	30
PID 2688 wrote to memory of 2744	2688	rundll32.exe	30
PID 2688 wrote to memory of 2744	2688	rundll32.exe	30
PID 2744 wrote to memory of 2756	2744	rundll32.exe	31
PID 2744 wrote to memory of 2756	2744	rundll32.exe	31
PID 2744 wrote to memory of 2756	2744	rundll32.exe	31
PID 2744 wrote to memory of 2756	2744	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bf715a162d58532ff68e58bde821ffb9f2f080d980f0db4c5b6f1fa12906ad1fN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2688
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\bf715a162d58532ff68e58bde821ffb9f2f080d980f0db4c5b6f1fa12906ad1fN.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:2744
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2744 -s 228
    3⤵
    - Program crash
    PID:2756