1889a4f41fe4053045a502abb252d2877348f052407f358b6d58b81f1834d76f

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02/03/2025, 20:14

Target

1889a4f41fe4053045a502abb252d2877348f052407f358b6d58b81f1834d76f.dll
Size

137KB
MD5

ac7af93c997f62d01973f9f3bd42e76c
SHA1

1bee8895bbf39a4f0e6ffb9b3baa2922b9a93aad
SHA256

1889a4f41fe4053045a502abb252d2877348f052407f358b6d58b81f1834d76f
SHA512

9f39f6d4e7fc8ddaf450acd470f3501505da420c1214c719ec28b99bb9ae51e98e7880652338dd901eb7aaaf459325d62544b42483b9fe2101edd071de47b42a
SSDEEP

3072:LR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUup:m25GgFny61mraj

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
2416	2340	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 2228 wrote to memory of 2340	2228	rundll32.exe	30
PID 2228 wrote to memory of 2340	2228	rundll32.exe	30
PID 2228 wrote to memory of 2340	2228	rundll32.exe	30
PID 2228 wrote to memory of 2340	2228	rundll32.exe	30
PID 2228 wrote to memory of 2340	2228	rundll32.exe	30
PID 2228 wrote to memory of 2340	2228	rundll32.exe	30
PID 2228 wrote to memory of 2340	2228	rundll32.exe	30
PID 2340 wrote to memory of 2416	2340	rundll32.exe	31
PID 2340 wrote to memory of 2416	2340	rundll32.exe	31
PID 2340 wrote to memory of 2416	2340	rundll32.exe	31
PID 2340 wrote to memory of 2416	2340	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\1889a4f41fe4053045a502abb252d2877348f052407f358b6d58b81f1834d76f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\1889a4f41fe4053045a502abb252d2877348f052407f358b6d58b81f1834d76f.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:2340
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2340 -s 228
    3⤵
    - Program crash
    PID:2416