f2d4d78736c42e9de5247ebb9352f367d8095da89e35eb29d757f690c3d7089c

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06/03/2025, 14:42

Target

f2d4d78736c42e9de5247ebb9352f367d8095da89e35eb29d757f690c3d7089c.dll
Size

137KB
MD5

2df79af652afddc639af1d4991634789
SHA1

ccf416b6da93b5ae0a026f74efa35a2296403dd2
SHA256

f2d4d78736c42e9de5247ebb9352f367d8095da89e35eb29d757f690c3d7089c
SHA512

6fc5cd41a21c56de9c2f845b97e445a5c73b032d5b57f9c30c8f2eea49865f8ac25a46b794b3d8362cb989a7b1823a9d5aec0aec2a239674e4ce334ec58b5658
SSDEEP

3072:gR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuN:l25GgFny61mran

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
2156	2288	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 2692 wrote to memory of 2288	2692	rundll32.exe	30
PID 2692 wrote to memory of 2288	2692	rundll32.exe	30
PID 2692 wrote to memory of 2288	2692	rundll32.exe	30
PID 2692 wrote to memory of 2288	2692	rundll32.exe	30
PID 2692 wrote to memory of 2288	2692	rundll32.exe	30
PID 2692 wrote to memory of 2288	2692	rundll32.exe	30
PID 2692 wrote to memory of 2288	2692	rundll32.exe	30
PID 2288 wrote to memory of 2156	2288	rundll32.exe	31
PID 2288 wrote to memory of 2156	2288	rundll32.exe	31
PID 2288 wrote to memory of 2156	2288	rundll32.exe	31
PID 2288 wrote to memory of 2156	2288	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f2d4d78736c42e9de5247ebb9352f367d8095da89e35eb29d757f690c3d7089c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f2d4d78736c42e9de5247ebb9352f367d8095da89e35eb29d757f690c3d7089c.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:2288
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2288 -s 228
    3⤵
    - Program crash
    PID:2156