afa232bb2879f2fa97358cbb3473509ed3209b465c916b12b3f6a179e4399420

Analysis

max time kernel
120s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08/03/2025, 11:47

Target

afa232bb2879f2fa97358cbb3473509ed3209b465c916b12b3f6a179e4399420.dll
Size

137KB
MD5

6422660d4a8bfa9a33ae1dfc99a4d634
SHA1

940a5afff585791164534c9100a87941fa4515f5
SHA256

afa232bb2879f2fa97358cbb3473509ed3209b465c916b12b3f6a179e4399420
SHA512

96449a6891a0abe837a72aa79630f7d03a84d715f3ec45e07aa9be021a6a745a3501461ddde793ae3c731ef82647148d31c014e8f29c371d9357005faa08f934
SSDEEP

3072:lR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUu:o25GgFny61mra

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
1560	1332	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 1932 wrote to memory of 1332	1932	rundll32.exe	30
PID 1932 wrote to memory of 1332	1932	rundll32.exe	30
PID 1932 wrote to memory of 1332	1932	rundll32.exe	30
PID 1932 wrote to memory of 1332	1932	rundll32.exe	30
PID 1932 wrote to memory of 1332	1932	rundll32.exe	30
PID 1932 wrote to memory of 1332	1932	rundll32.exe	30
PID 1932 wrote to memory of 1332	1932	rundll32.exe	30
PID 1332 wrote to memory of 1560	1332	rundll32.exe	31
PID 1332 wrote to memory of 1560	1332	rundll32.exe	31
PID 1332 wrote to memory of 1560	1332	rundll32.exe	31
PID 1332 wrote to memory of 1560	1332	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\afa232bb2879f2fa97358cbb3473509ed3209b465c916b12b3f6a179e4399420.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\afa232bb2879f2fa97358cbb3473509ed3209b465c916b12b3f6a179e4399420.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:1332
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1332 -s 228
    3⤵
    - Program crash
    PID:1560