37f0db3882ccff859f0046b30d7e649fa92c0f44159c58a0841e45cf1816db1b

Analysis

max time kernel
121s
max time network
125s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
04/03/2025, 23:22

Target

37f0db3882ccff859f0046b30d7e649fa92c0f44159c58a0841e45cf1816db1b.dll
Size

137KB
MD5

23f38320b486a2189f072ab972cc4f70
SHA1

fc6a9bb2e31d4ff06d34d5079edfc7afe0078e3a
SHA256

37f0db3882ccff859f0046b30d7e649fa92c0f44159c58a0841e45cf1816db1b
SHA512

ec866a445d2326aa3c313c7ba4e6ae966064cfc204be1ae042b1eeeaecd0b9bdc6b6cecaa23fe811f1561525f0f3f50795060fe1e83010c3e0687a93d2ea86bc
SSDEEP

3072:QR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuT:125GgFny61mrah

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
2780	2472	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 2080 wrote to memory of 2472	2080	rundll32.exe	30
PID 2080 wrote to memory of 2472	2080	rundll32.exe	30
PID 2080 wrote to memory of 2472	2080	rundll32.exe	30
PID 2080 wrote to memory of 2472	2080	rundll32.exe	30
PID 2080 wrote to memory of 2472	2080	rundll32.exe	30
PID 2080 wrote to memory of 2472	2080	rundll32.exe	30
PID 2080 wrote to memory of 2472	2080	rundll32.exe	30
PID 2472 wrote to memory of 2780	2472	rundll32.exe	31
PID 2472 wrote to memory of 2780	2472	rundll32.exe	31
PID 2472 wrote to memory of 2780	2472	rundll32.exe	31
PID 2472 wrote to memory of 2780	2472	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\37f0db3882ccff859f0046b30d7e649fa92c0f44159c58a0841e45cf1816db1b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2080
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\37f0db3882ccff859f0046b30d7e649fa92c0f44159c58a0841e45cf1816db1b.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:2472
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2472 -s 232
    3⤵
    - Program crash
    PID:2780

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:2864