f599a95c80a56cdf70155e225806f396d4b22564058c9183d6b6931c6de9357c

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01/03/2025, 08:19

Target

f599a95c80a56cdf70155e225806f396d4b22564058c9183d6b6931c6de9357c.dll
Size

137KB
MD5

e911c43d3263672ec953af19478f2fd7
SHA1

fc31ec2dc8adcd41bc44bde2fdd9a39b7baed2d6
SHA256

f599a95c80a56cdf70155e225806f396d4b22564058c9183d6b6931c6de9357c
SHA512

474df90d770636f7ea0038658efb806addd22e5d8c53937ac0f21082ad47adabc9362bd7a83948fa6b1e381b57577bd254502639ba8a0941265e056b0164ec13
SSDEEP

3072:YR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuJ:N25GgFny61mra7

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
2556	2576	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 2412 wrote to memory of 2576	2412	rundll32.exe	30
PID 2412 wrote to memory of 2576	2412	rundll32.exe	30
PID 2412 wrote to memory of 2576	2412	rundll32.exe	30
PID 2412 wrote to memory of 2576	2412	rundll32.exe	30
PID 2412 wrote to memory of 2576	2412	rundll32.exe	30
PID 2412 wrote to memory of 2576	2412	rundll32.exe	30
PID 2412 wrote to memory of 2576	2412	rundll32.exe	30
PID 2576 wrote to memory of 2556	2576	rundll32.exe	31
PID 2576 wrote to memory of 2556	2576	rundll32.exe	31
PID 2576 wrote to memory of 2556	2576	rundll32.exe	31
PID 2576 wrote to memory of 2556	2576	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f599a95c80a56cdf70155e225806f396d4b22564058c9183d6b6931c6de9357c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f599a95c80a56cdf70155e225806f396d4b22564058c9183d6b6931c6de9357c.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:2576
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2576 -s 228
    3⤵
    - Program crash
    PID:2556