3661667f36ba2586822062dc1a06d4ec682b07bb67f02b123fbce47fc18d2bb5

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02/03/2025, 21:50

Target

3661667f36ba2586822062dc1a06d4ec682b07bb67f02b123fbce47fc18d2bb5.dll
Size

137KB
MD5

fc7bd98e3151cc864f8633c5e3e7863e
SHA1

af94d9b4901deaf096c766d0443656665c790e25
SHA256

3661667f36ba2586822062dc1a06d4ec682b07bb67f02b123fbce47fc18d2bb5
SHA512

d8a7ad08d6a03c89a4e3613424b42381958ef1a5fd133183d5a1e0ce2505f2457fda5f0ccadc98c9b2fcb85129952263f1e04c6f13691263b7be02b7204e481b
SSDEEP

3072:OR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuE:b25GgFny61mrau

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
2672	1940	WerFault.exe	31

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 2436 wrote to memory of 1940	2436	rundll32.exe	31
PID 2436 wrote to memory of 1940	2436	rundll32.exe	31
PID 2436 wrote to memory of 1940	2436	rundll32.exe	31
PID 2436 wrote to memory of 1940	2436	rundll32.exe	31
PID 2436 wrote to memory of 1940	2436	rundll32.exe	31
PID 2436 wrote to memory of 1940	2436	rundll32.exe	31
PID 2436 wrote to memory of 1940	2436	rundll32.exe	31
PID 1940 wrote to memory of 2672	1940	rundll32.exe	32
PID 1940 wrote to memory of 2672	1940	rundll32.exe	32
PID 1940 wrote to memory of 2672	1940	rundll32.exe	32
PID 1940 wrote to memory of 2672	1940	rundll32.exe	32

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3661667f36ba2586822062dc1a06d4ec682b07bb67f02b123fbce47fc18d2bb5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3661667f36ba2586822062dc1a06d4ec682b07bb67f02b123fbce47fc18d2bb5.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:1940
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1940 -s 228
    3⤵
    - Program crash
    PID:2672