a22b75fa068f4c1267338be452e63ceeeb5c147a48782f0ba9f95d97ce85788b

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27/01/2025, 15:57

Target

a22b75fa068f4c1267338be452e63ceeeb5c147a48782f0ba9f95d97ce85788b.dll
Size

137KB
MD5

112cf157189c381867bd38ff908e2ceb
SHA1

b275452d72d1dc8da315085f406ecab8ac819dd8
SHA256

a22b75fa068f4c1267338be452e63ceeeb5c147a48782f0ba9f95d97ce85788b
SHA512

c95e5e6f7ec484d74c92682ef05f2d1fe9f990a5988736884596f28fc57941983dc50c1af99a020fa29006d2ddd82b98c70864d43676fc28a833c8269b9540b9
SSDEEP

3072:SR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUuF:325GgFny61mraf

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
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor\Driver = "scsimon.dll"	rundll32.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Print\Monitors\SCSI Port Monitor	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
2752	2672	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 2636 wrote to memory of 2672	2636	rundll32.exe	30
PID 2636 wrote to memory of 2672	2636	rundll32.exe	30
PID 2636 wrote to memory of 2672	2636	rundll32.exe	30
PID 2636 wrote to memory of 2672	2636	rundll32.exe	30
PID 2636 wrote to memory of 2672	2636	rundll32.exe	30
PID 2636 wrote to memory of 2672	2636	rundll32.exe	30
PID 2636 wrote to memory of 2672	2636	rundll32.exe	30
PID 2672 wrote to memory of 2752	2672	rundll32.exe	31
PID 2672 wrote to memory of 2752	2672	rundll32.exe	31
PID 2672 wrote to memory of 2752	2672	rundll32.exe	31
PID 2672 wrote to memory of 2752	2672	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a22b75fa068f4c1267338be452e63ceeeb5c147a48782f0ba9f95d97ce85788b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a22b75fa068f4c1267338be452e63ceeeb5c147a48782f0ba9f95d97ce85788b.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:2672
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2672 -s 228
    3⤵
    - Program crash
    PID:2752