2cda176e29df9df4d23f89acaa99db10b1b4b721d3b1933ec68f938123194b12

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-11-2024 17:23

Target

2cda176e29df9df4d23f89acaa99db10b1b4b721d3b1933ec68f938123194b12N.dll
Size

137KB
MD5

b199212d119d10a86184afb141ee9ba0
SHA1

f4f4d9a4e1be78e3416979330e0408411753a51c
SHA256

2cda176e29df9df4d23f89acaa99db10b1b4b721d3b1933ec68f938123194b12
SHA512

208467def4d4c4d29f2409d931d34b808130f6c3f4917986d1115b4142fffc84ca40c7589d1b273de6c70124711b659b63dda9d678c0d42d590d1c7930b3fa76
SSDEEP

3072:pR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUud:k25GgFny61mraz

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

2836 2860 WerFault.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
2836	2860	WerFault.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 2844 wrote to memory of 2860	2844	rundll32.exe	rundll32.exe
PID 2844 wrote to memory of 2860	2844	rundll32.exe	rundll32.exe
PID 2844 wrote to memory of 2860	2844	rundll32.exe	rundll32.exe
PID 2844 wrote to memory of 2860	2844	rundll32.exe	rundll32.exe
PID 2844 wrote to memory of 2860	2844	rundll32.exe	rundll32.exe
PID 2844 wrote to memory of 2860	2844	rundll32.exe	rundll32.exe
PID 2844 wrote to memory of 2860	2844	rundll32.exe	rundll32.exe
PID 2860 wrote to memory of 2836	2860	rundll32.exe	WerFault.exe
PID 2860 wrote to memory of 2836	2860	rundll32.exe	WerFault.exe
PID 2860 wrote to memory of 2836	2860	rundll32.exe	WerFault.exe
PID 2860 wrote to memory of 2836	2860	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2cda176e29df9df4d23f89acaa99db10b1b4b721d3b1933ec68f938123194b12N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\2cda176e29df9df4d23f89acaa99db10b1b4b721d3b1933ec68f938123194b12N.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:2860
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2860 -s 228
    3⤵
    - Program crash
    PID:2836