d597e69e64116773827faa3c68de9a694d407778a1921e8b6b5e94cef9f9ceb8

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-11-2024 12:36

Target

d597e69e64116773827faa3c68de9a694d407778a1921e8b6b5e94cef9f9ceb8N.dll
Size

137KB
MD5

2b2edc515397a4cb230cc8101925d360
SHA1

b8b4ccefc206f4ad2f18457ce2b7f6f3b1aeb67c
SHA256

d597e69e64116773827faa3c68de9a694d407778a1921e8b6b5e94cef9f9ceb8
SHA512

1c93e18a3cb187a26b625451a366ec6661be4344d21daf37d68d0196335fa4eb4aa983c9cbcf9ac6992b9249b2bf72c909d39bb2dceee543f954c860dd4757a0
SSDEEP

3072:3R02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuQ:K25GgFny61mrae

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

2528 2384 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
2528	2384	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 2480 wrote to memory of 2384	2480	rundll32.exe	rundll32.exe
PID 2480 wrote to memory of 2384	2480	rundll32.exe	rundll32.exe
PID 2480 wrote to memory of 2384	2480	rundll32.exe	rundll32.exe
PID 2480 wrote to memory of 2384	2480	rundll32.exe	rundll32.exe
PID 2480 wrote to memory of 2384	2480	rundll32.exe	rundll32.exe
PID 2480 wrote to memory of 2384	2480	rundll32.exe	rundll32.exe
PID 2480 wrote to memory of 2384	2480	rundll32.exe	rundll32.exe
PID 2384 wrote to memory of 2528	2384	rundll32.exe	WerFault.exe
PID 2384 wrote to memory of 2528	2384	rundll32.exe	WerFault.exe
PID 2384 wrote to memory of 2528	2384	rundll32.exe	WerFault.exe
PID 2384 wrote to memory of 2528	2384	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d597e69e64116773827faa3c68de9a694d407778a1921e8b6b5e94cef9f9ceb8N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2480
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d597e69e64116773827faa3c68de9a694d407778a1921e8b6b5e94cef9f9ceb8N.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:2384
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2384 -s 228
    3⤵
    - Program crash
    PID:2528