246c6ae2cd80e7f094414177fd7d24fe94005cdd4a52f116e3645ab68863620d

Analysis

max time kernel
66s
max time network
18s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-11-2024 11:41

Target

246c6ae2cd80e7f094414177fd7d24fe94005cdd4a52f116e3645ab68863620dN.dll
Size

137KB
MD5

0da72c05d3b22e39d88018f37b59bc90
SHA1

9d48a15eb10793523a84df18cb99b811c2d9389a
SHA256

246c6ae2cd80e7f094414177fd7d24fe94005cdd4a52f116e3645ab68863620d
SHA512

b63a6e00750730936bb4b1c28f1888d210e0f66ee8c4010cc8d55618954ae2c692094bd163d7353b0b49a0a71b1dac002a89498da355fd6e9d4208cc78bb7d43
SSDEEP

3072:IR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuT:d25GgFny61mra1

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

Processes:

rundll32.exe

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
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Processes:

rundll32.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Spooler\ImagePath = "Spoolsv.exe" rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\com\comb.dll rundll32.exe
Drops file in Windows directory 2 IoCs

Processes:

rundll32.exe

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

Processes:

WerFault.exe

pid pid_target process target process

2740 2736 WerFault.exe rundll32.exe
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.
discovery

System Language Discovery
T1614.001

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Spooler\ImagePath = "Spoolsv.exe"	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\com\comb.dll	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\AppPatch\ComBack.Dll	rundll32.exe
File created	C:\Windows\AppPatch\ComBack.Dll	rundll32.exe

pid	pid_target	process	target process
2740	2736	WerFault.exe	rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2316 wrote to memory of 2736	2316	rundll32.exe	rundll32.exe
PID 2316 wrote to memory of 2736	2316	rundll32.exe	rundll32.exe
PID 2316 wrote to memory of 2736	2316	rundll32.exe	rundll32.exe
PID 2316 wrote to memory of 2736	2316	rundll32.exe	rundll32.exe
PID 2316 wrote to memory of 2736	2316	rundll32.exe	rundll32.exe
PID 2316 wrote to memory of 2736	2316	rundll32.exe	rundll32.exe
PID 2316 wrote to memory of 2736	2316	rundll32.exe	rundll32.exe
PID 2736 wrote to memory of 2740	2736	rundll32.exe	WerFault.exe
PID 2736 wrote to memory of 2740	2736	rundll32.exe	WerFault.exe
PID 2736 wrote to memory of 2740	2736	rundll32.exe	WerFault.exe
PID 2736 wrote to memory of 2740	2736	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\246c6ae2cd80e7f094414177fd7d24fe94005cdd4a52f116e3645ab68863620dN.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\246c6ae2cd80e7f094414177fd7d24fe94005cdd4a52f116e3645ab68863620dN.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:2736
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2736 -s 228
    3⤵
    - Program crash
    PID:2740