3f0d768b858dacc150bf899ef188d10c48b7c4f9cf89c3972ba6914a087f5073

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
10/03/2025, 22:28

Target

3f0d768b858dacc150bf899ef188d10c48b7c4f9cf89c3972ba6914a087f5073.dll
Size

137KB
MD5

2318a1aa5c352c306dc9e2a503ebde70
SHA1

707f5f94d453bec3d31053a73ec0ecffe2298661
SHA256

3f0d768b858dacc150bf899ef188d10c48b7c4f9cf89c3972ba6914a087f5073
SHA512

9371ef7340b8b0f496f00b095b8be35b06a92f861b3696a8782a98f407c8d305c5cadc62e03b4eb90ccb5a0bf93f3bbfc60d5ab4ec582f19293f3584e9dff752
SSDEEP

3072:rR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuu:G25GgFny61mrac

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
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor\Driver = "scsimon.dll"	rundll32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor	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
2688	2684	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 3052 wrote to memory of 2684	3052	rundll32.exe	30
PID 3052 wrote to memory of 2684	3052	rundll32.exe	30
PID 3052 wrote to memory of 2684	3052	rundll32.exe	30
PID 3052 wrote to memory of 2684	3052	rundll32.exe	30
PID 3052 wrote to memory of 2684	3052	rundll32.exe	30
PID 3052 wrote to memory of 2684	3052	rundll32.exe	30
PID 3052 wrote to memory of 2684	3052	rundll32.exe	30
PID 2684 wrote to memory of 2688	2684	rundll32.exe	31
PID 2684 wrote to memory of 2688	2684	rundll32.exe	31
PID 2684 wrote to memory of 2688	2684	rundll32.exe	31
PID 2684 wrote to memory of 2688	2684	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3f0d768b858dacc150bf899ef188d10c48b7c4f9cf89c3972ba6914a087f5073.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3f0d768b858dacc150bf899ef188d10c48b7c4f9cf89c3972ba6914a087f5073.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:2684
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2684 -s 228
    3⤵
    - Program crash
    PID:2688