17b8baf4c19fa546cb2820cb682801d898093b99dda8a3e53ef021d48070b558

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
27-01-2025 01:44

Target

17b8baf4c19fa546cb2820cb682801d898093b99dda8a3e53ef021d48070b558.dll
Size

137KB
MD5

9d5d0181b6c5c26f29cc3c7392dfbf09
SHA1

33a1954d9c2940f6a603405e1db9ff05f6ff8ea8
SHA256

17b8baf4c19fa546cb2820cb682801d898093b99dda8a3e53ef021d48070b558
SHA512

587a6daaaefb3297efa8bb3adc36d98387334ec5456c1a7d08ad5123a35a94697ce51cdf29a132c86b3ae5ce5d963a6034fc7884885e08ebc0a11a145b3ce091
SSDEEP

3072:1R02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuz:Y25GgFny61mraJ

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
684	2516	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 2992 wrote to memory of 2516	2992	rundll32.exe	31
PID 2992 wrote to memory of 2516	2992	rundll32.exe	31
PID 2992 wrote to memory of 2516	2992	rundll32.exe	31
PID 2992 wrote to memory of 2516	2992	rundll32.exe	31
PID 2992 wrote to memory of 2516	2992	rundll32.exe	31
PID 2992 wrote to memory of 2516	2992	rundll32.exe	31
PID 2992 wrote to memory of 2516	2992	rundll32.exe	31
PID 2516 wrote to memory of 684	2516	rundll32.exe	32
PID 2516 wrote to memory of 684	2516	rundll32.exe	32
PID 2516 wrote to memory of 684	2516	rundll32.exe	32
PID 2516 wrote to memory of 684	2516	rundll32.exe	32

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\17b8baf4c19fa546cb2820cb682801d898093b99dda8a3e53ef021d48070b558.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\17b8baf4c19fa546cb2820cb682801d898093b99dda8a3e53ef021d48070b558.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:2516
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 232
    3⤵
    - Program crash
    PID:684

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:2416