87896cc6d04f9e233adb0fe592285110df6514fda018cbce1a3488e8472618c5

Analysis

max time kernel
91s
max time network
18s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
03/03/2025, 01:39

Target

87896cc6d04f9e233adb0fe592285110df6514fda018cbce1a3488e8472618c5.dll
Size

137KB
MD5

91d2a8bfcba65ca30a14772a054e8ff1
SHA1

896c26f60da3c3f95cd5fbfcda1a24f4cd9e3856
SHA256

87896cc6d04f9e233adb0fe592285110df6514fda018cbce1a3488e8472618c5
SHA512

1f8cc97bc68c4df1608d2eed1d1420e494d3658fc9fd56456debf2090becaa51f2e96fc4f6847886f7d9901e7f402eba2b270132008d817764f94d94b37d427e
SSDEEP

3072:NR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUu:A25GgFny61mra

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
2768	2676	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 2188 wrote to memory of 2676	2188	rundll32.exe	30
PID 2188 wrote to memory of 2676	2188	rundll32.exe	30
PID 2188 wrote to memory of 2676	2188	rundll32.exe	30
PID 2188 wrote to memory of 2676	2188	rundll32.exe	30
PID 2188 wrote to memory of 2676	2188	rundll32.exe	30
PID 2188 wrote to memory of 2676	2188	rundll32.exe	30
PID 2188 wrote to memory of 2676	2188	rundll32.exe	30
PID 2676 wrote to memory of 2768	2676	rundll32.exe	31
PID 2676 wrote to memory of 2768	2676	rundll32.exe	31
PID 2676 wrote to memory of 2768	2676	rundll32.exe	31
PID 2676 wrote to memory of 2768	2676	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\87896cc6d04f9e233adb0fe592285110df6514fda018cbce1a3488e8472618c5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\87896cc6d04f9e233adb0fe592285110df6514fda018cbce1a3488e8472618c5.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:2676
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2676 -s 228
    3⤵
    - Program crash
    PID:2768

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {995C996E-D918-4a8c-A302-45719A6F4EA7} -Embedding
1⤵
PID:2936