4ec1d12b6ddbb80cc46e997ba348088fa389e8487d3bf77475bf946e8594ec64

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01/03/2025, 23:03

Target

4ec1d12b6ddbb80cc46e997ba348088fa389e8487d3bf77475bf946e8594ec64.dll
Size

137KB
MD5

5b6186ff310b0faa3f185d22159658a3
SHA1

1323f0832397703b4a51825eb86a8bd2ded93bc9
SHA256

4ec1d12b6ddbb80cc46e997ba348088fa389e8487d3bf77475bf946e8594ec64
SHA512

ed53c9a8677e340fa41b2f5df416954f9b93cc262cedee146095b6e3962e6f280d26492e13ded95c9588c6d6fc176d6a2bc17ffcda80d76ff9e9b6520e4ce29f
SSDEEP

3072:bR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUul:W25GgFny61mra3

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
2400	2696	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 1968 wrote to memory of 2696	1968	rundll32.exe	30
PID 1968 wrote to memory of 2696	1968	rundll32.exe	30
PID 1968 wrote to memory of 2696	1968	rundll32.exe	30
PID 1968 wrote to memory of 2696	1968	rundll32.exe	30
PID 1968 wrote to memory of 2696	1968	rundll32.exe	30
PID 1968 wrote to memory of 2696	1968	rundll32.exe	30
PID 1968 wrote to memory of 2696	1968	rundll32.exe	30
PID 2696 wrote to memory of 2400	2696	rundll32.exe	31
PID 2696 wrote to memory of 2400	2696	rundll32.exe	31
PID 2696 wrote to memory of 2400	2696	rundll32.exe	31
PID 2696 wrote to memory of 2400	2696	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ec1d12b6ddbb80cc46e997ba348088fa389e8487d3bf77475bf946e8594ec64.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ec1d12b6ddbb80cc46e997ba348088fa389e8487d3bf77475bf946e8594ec64.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:2696
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2696 -s 228
    3⤵
    - Program crash
    PID:2400

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:2352