1bc50e8010a8cbe8abb1383ceab8487214086d3fcecfb85f0920a506255a6bf9

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
02/03/2025, 20:26

Target

1bc50e8010a8cbe8abb1383ceab8487214086d3fcecfb85f0920a506255a6bf9.dll
Size

137KB
MD5

fb0420384f5ae0b7c7e15eb7db6a3b0b
SHA1

2b4521c99293631e205319dee7ea82209a138967
SHA256

1bc50e8010a8cbe8abb1383ceab8487214086d3fcecfb85f0920a506255a6bf9
SHA512

357b83654a82c6409e5bda75695f11dd21ca79a38ea465b94196561f6a9a7d42b9461383f4775de67d42ac865f583462551fd04f77738bf86348cc70bc1d2c66
SSDEEP

3072:0R02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuR:x25GgFny61mrav

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
1432	1528	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 1740 wrote to memory of 1528	1740	rundll32.exe	30
PID 1740 wrote to memory of 1528	1740	rundll32.exe	30
PID 1740 wrote to memory of 1528	1740	rundll32.exe	30
PID 1740 wrote to memory of 1528	1740	rundll32.exe	30
PID 1740 wrote to memory of 1528	1740	rundll32.exe	30
PID 1740 wrote to memory of 1528	1740	rundll32.exe	30
PID 1740 wrote to memory of 1528	1740	rundll32.exe	30
PID 1528 wrote to memory of 1432	1528	rundll32.exe	31
PID 1528 wrote to memory of 1432	1528	rundll32.exe	31
PID 1528 wrote to memory of 1432	1528	rundll32.exe	31
PID 1528 wrote to memory of 1432	1528	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1bc50e8010a8cbe8abb1383ceab8487214086d3fcecfb85f0920a506255a6bf9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1740
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\1bc50e8010a8cbe8abb1383ceab8487214086d3fcecfb85f0920a506255a6bf9.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:1528
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1528 -s 228
    3⤵
    - Program crash
    PID:1432

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:2448