bd8b1d727814522f7a4a94f51b7a73a490550d79741043f117369307c1c8e3ed

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28-01-2025 02:41

Target

bd8b1d727814522f7a4a94f51b7a73a490550d79741043f117369307c1c8e3ed.dll
Size

137KB
MD5

1dd3bd449376a71c139cec49743a205f
SHA1

7c6733186db25b45120a8dc7202fae75cf48e249
SHA256

bd8b1d727814522f7a4a94f51b7a73a490550d79741043f117369307c1c8e3ed
SHA512

ea9461f40408e2a16bb611f976b3d8c8501068f93d66a7edec9c606edf8efac9bb0c0380dff5f56189954b84abffdc5192fc91cd1e1c1507b4998b70f1d3323d
SSDEEP

3072:wR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuX:V25GgFny61mraZ

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
2692	1252	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 2156 wrote to memory of 1252	2156	rundll32.exe	30
PID 2156 wrote to memory of 1252	2156	rundll32.exe	30
PID 2156 wrote to memory of 1252	2156	rundll32.exe	30
PID 2156 wrote to memory of 1252	2156	rundll32.exe	30
PID 2156 wrote to memory of 1252	2156	rundll32.exe	30
PID 2156 wrote to memory of 1252	2156	rundll32.exe	30
PID 2156 wrote to memory of 1252	2156	rundll32.exe	30
PID 1252 wrote to memory of 2692	1252	rundll32.exe	31
PID 1252 wrote to memory of 2692	1252	rundll32.exe	31
PID 1252 wrote to memory of 2692	1252	rundll32.exe	31
PID 1252 wrote to memory of 2692	1252	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bd8b1d727814522f7a4a94f51b7a73a490550d79741043f117369307c1c8e3ed.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\bd8b1d727814522f7a4a94f51b7a73a490550d79741043f117369307c1c8e3ed.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:1252
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1252 -s 228
    3⤵
    - Program crash
    PID:2692

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:2472