fd27620fe5ef8265e0be3f011cc97c35c4ffcd3c3bad57862a2741f184c05558

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01/03/2025, 08:44

Target

fd27620fe5ef8265e0be3f011cc97c35c4ffcd3c3bad57862a2741f184c05558.dll
Size

137KB
MD5

99ab2c6d3dddcc05d87671373660ecd6
SHA1

37c5f2e5f4df914e7d547570d5165cd364b66d12
SHA256

fd27620fe5ef8265e0be3f011cc97c35c4ffcd3c3bad57862a2741f184c05558
SHA512

acadccbd8360ff47da733a274cb0fd2843133a8cfd81dd88763ae526105d67a177c0e8faca042ca4a2895c0200976782e2e4973fdf378543d185a303285686b0
SSDEEP

3072:ZR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUui:025GgFny61mraE

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
1868	3068	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 3016 wrote to memory of 3068	3016	rundll32.exe	30
PID 3016 wrote to memory of 3068	3016	rundll32.exe	30
PID 3016 wrote to memory of 3068	3016	rundll32.exe	30
PID 3016 wrote to memory of 3068	3016	rundll32.exe	30
PID 3016 wrote to memory of 3068	3016	rundll32.exe	30
PID 3016 wrote to memory of 3068	3016	rundll32.exe	30
PID 3016 wrote to memory of 3068	3016	rundll32.exe	30
PID 3068 wrote to memory of 1868	3068	rundll32.exe	31
PID 3068 wrote to memory of 1868	3068	rundll32.exe	31
PID 3068 wrote to memory of 1868	3068	rundll32.exe	31
PID 3068 wrote to memory of 1868	3068	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fd27620fe5ef8265e0be3f011cc97c35c4ffcd3c3bad57862a2741f184c05558.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fd27620fe5ef8265e0be3f011cc97c35c4ffcd3c3bad57862a2741f184c05558.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:3068
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3068 -s 228
    3⤵
    - Program crash
    PID:1868

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:2940