8fb8eb45a30c9b24e57f455c0d7aedc6d8c7b510a91126e45cf74f734e34653f

Analysis

max time kernel
119s
max time network
16s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27-01-2025 03:44

Target

8fb8eb45a30c9b24e57f455c0d7aedc6d8c7b510a91126e45cf74f734e34653f.dll
Size

137KB
MD5

29928f77de8cee82e60a77291f31a8f1
SHA1

f867ca2aa063303ec8198c5a921788ec76428ad5
SHA256

8fb8eb45a30c9b24e57f455c0d7aedc6d8c7b510a91126e45cf74f734e34653f
SHA512

aa4aa16872c97dabee6acb2413be1ac54596505946d3e98500e2b0cbb11cef3a19d182fbe657f181194c68e12f752a038f4133a56d780b2f8d518973e45ab114
SSDEEP

3072:pR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuX:k25GgFny61mraF

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
2388	1892	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 2308 wrote to memory of 1892	2308	rundll32.exe	30
PID 2308 wrote to memory of 1892	2308	rundll32.exe	30
PID 2308 wrote to memory of 1892	2308	rundll32.exe	30
PID 2308 wrote to memory of 1892	2308	rundll32.exe	30
PID 2308 wrote to memory of 1892	2308	rundll32.exe	30
PID 2308 wrote to memory of 1892	2308	rundll32.exe	30
PID 2308 wrote to memory of 1892	2308	rundll32.exe	30
PID 1892 wrote to memory of 2388	1892	rundll32.exe	31
PID 1892 wrote to memory of 2388	1892	rundll32.exe	31
PID 1892 wrote to memory of 2388	1892	rundll32.exe	31
PID 1892 wrote to memory of 2388	1892	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\8fb8eb45a30c9b24e57f455c0d7aedc6d8c7b510a91126e45cf74f734e34653f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\8fb8eb45a30c9b24e57f455c0d7aedc6d8c7b510a91126e45cf74f734e34653f.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:1892
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1892 -s 228
    3⤵
    - Program crash
    PID:2388