fd40bcb69f761511ec33579564b7545bc78921a8e935a81ab14adb2ed81599e9

Analysis

max time kernel
110s
max time network
18s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09/09/2024, 17:26

Target

6b6e86105183545bb67ff442a3147b30N.dll
Size

137KB
MD5

6b6e86105183545bb67ff442a3147b30
SHA1

f1f77b08fbe9f6775e03ec852474e2367dafcf2f
SHA256

fd40bcb69f761511ec33579564b7545bc78921a8e935a81ab14adb2ed81599e9
SHA512

a820595f2663d66bc3b04f00461866e0e7fd6c688d6b16e2f05b21f5583195572d8a6fb57d3e9eba113d0e0b5db39d6a967d73ac8bc20f7924b16d1d1337eb32
SSDEEP

3072:iR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuK:n25GgFny61mrak

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 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
2336	2324	WerFault.exe	29

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 2952 wrote to memory of 2324	2952	rundll32.exe	29
PID 2952 wrote to memory of 2324	2952	rundll32.exe	29
PID 2952 wrote to memory of 2324	2952	rundll32.exe	29
PID 2952 wrote to memory of 2324	2952	rundll32.exe	29
PID 2952 wrote to memory of 2324	2952	rundll32.exe	29
PID 2952 wrote to memory of 2324	2952	rundll32.exe	29
PID 2952 wrote to memory of 2324	2952	rundll32.exe	29
PID 2324 wrote to memory of 2336	2324	rundll32.exe	30
PID 2324 wrote to memory of 2336	2324	rundll32.exe	30
PID 2324 wrote to memory of 2336	2324	rundll32.exe	30
PID 2324 wrote to memory of 2336	2324	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6b6e86105183545bb67ff442a3147b30N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2952
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\6b6e86105183545bb67ff442a3147b30N.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:2324
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2324 -s 232
    3⤵
    - Program crash
    PID:2336

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:2900