b5fe600b0402c3da44b7355bd02a913c33032d40a2d05efe7975245a7276f22b

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02/03/2025, 03:56

Target

b5fe600b0402c3da44b7355bd02a913c33032d40a2d05efe7975245a7276f22b.dll
Size

137KB
MD5

9b0bdfb5d5a488f1c01783d702f53b2f
SHA1

92ced42ad358422af8a68cc110f7eb3e3117a3f2
SHA256

b5fe600b0402c3da44b7355bd02a913c33032d40a2d05efe7975245a7276f22b
SHA512

94e81f3166b742bc448a1e3be28e44d329763dcddce87bedd52fb2badea8c14c19cd30b0e017832bf65275f96cc515b521bb9c171806468ba4bb02cb27358808
SSDEEP

3072:HR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUus:625GgFny61mraK

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2184	2120	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 2908 wrote to memory of 2120	2908	rundll32.exe	30
PID 2908 wrote to memory of 2120	2908	rundll32.exe	30
PID 2908 wrote to memory of 2120	2908	rundll32.exe	30
PID 2908 wrote to memory of 2120	2908	rundll32.exe	30
PID 2908 wrote to memory of 2120	2908	rundll32.exe	30
PID 2908 wrote to memory of 2120	2908	rundll32.exe	30
PID 2908 wrote to memory of 2120	2908	rundll32.exe	30
PID 2120 wrote to memory of 2184	2120	rundll32.exe	31
PID 2120 wrote to memory of 2184	2120	rundll32.exe	31
PID 2120 wrote to memory of 2184	2120	rundll32.exe	31
PID 2120 wrote to memory of 2184	2120	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b5fe600b0402c3da44b7355bd02a913c33032d40a2d05efe7975245a7276f22b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b5fe600b0402c3da44b7355bd02a913c33032d40a2d05efe7975245a7276f22b.dll,#1
  2⤵
  - Boot or Logon Autostart Execution: Port Monitors
  - Sets service image path in registry
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2120
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2120 -s 228
    3⤵
    - Program crash
    PID:2184