3131d152af9f43f500e037c7e9cde884643cf247cfe2a0810dffbf0073ce16b9

Analysis

max time kernel
14s
max time network
18s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
05/03/2025, 22:52

Target

3131d152af9f43f500e037c7e9cde884643cf247cfe2a0810dffbf0073ce16b9.dll
Size

137KB
MD5

53453f042ae0136573149d2a2ec69636
SHA1

d7d58e5c8c5ce72848ca934564a6ca03c85664e0
SHA256

3131d152af9f43f500e037c7e9cde884643cf247cfe2a0810dffbf0073ce16b9
SHA512

92996e2df39483bfef79978769dae2f8ab643b95845fdbdd0e7a4ca7dddd5101e2a1270165c4472557fb6583c42637f234a107bc63a13055b2bc651b831c9ce1
SSDEEP

3072:9R02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuK:Q25GgFny61mraA

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
2028	2264	WerFault.exe	29

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 2236 wrote to memory of 2264	2236	rundll32.exe	29
PID 2236 wrote to memory of 2264	2236	rundll32.exe	29
PID 2236 wrote to memory of 2264	2236	rundll32.exe	29
PID 2236 wrote to memory of 2264	2236	rundll32.exe	29
PID 2236 wrote to memory of 2264	2236	rundll32.exe	29
PID 2236 wrote to memory of 2264	2236	rundll32.exe	29
PID 2236 wrote to memory of 2264	2236	rundll32.exe	29
PID 2264 wrote to memory of 2028	2264	rundll32.exe	30
PID 2264 wrote to memory of 2028	2264	rundll32.exe	30
PID 2264 wrote to memory of 2028	2264	rundll32.exe	30
PID 2264 wrote to memory of 2028	2264	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3131d152af9f43f500e037c7e9cde884643cf247cfe2a0810dffbf0073ce16b9.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3131d152af9f43f500e037c7e9cde884643cf247cfe2a0810dffbf0073ce16b9.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:2264
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2264 -s 232
    3⤵
    - Program crash
    PID:2028

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:2924