2f91e84db36e8fcace4b6daf245c2be1d0f9f2a3de1eea9f6d5663ff80d415ff

Analysis

max time kernel
120s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
11/03/2025, 21:37

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General

Target

2f91e84db36e8fcace4b6daf245c2be1d0f9f2a3de1eea9f6d5663ff80d415ff.dll
Size

137KB
MD5

23b536a1de4fe1414f3620c08cee1cf3
SHA1

ec596c7d78dec8b9eb7a7da2ba69ffbab2987800
SHA256

2f91e84db36e8fcace4b6daf245c2be1d0f9f2a3de1eea9f6d5663ff80d415ff
SHA512

7f8850ad33e437a1d1b10cf5beec002a953c579cd91fa9a45d99ec06bc00d1735e25e52f9ba4c91c1e5587eff3ff88db19e4e8be4c769855a7e3f8a1f0a9d0a2
SSDEEP

3072:zR02WMK8RJGInTlhnaBanONVk40rpg4yeF/TyUGSK9FrafcUksPxx6iTUug:e25GgFny61mray

Score

8^/10

discovery persistence

Malware Config

Signatures

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.

persistence

Port Monitors

T1547.010

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

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

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
4240	2996	WerFault.exe	86

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 708 wrote to memory of 2996	708	rundll32.exe	86
PID 708 wrote to memory of 2996	708	rundll32.exe	86
PID 708 wrote to memory of 2996	708	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\2f91e84db36e8fcace4b6daf245c2be1d0f9f2a3de1eea9f6d5663ff80d415ff.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:708
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\2f91e84db36e8fcace4b6daf245c2be1d0f9f2a3de1eea9f6d5663ff80d415ff.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
  PID:2996
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2996 -s 624
    3⤵
    - Program crash
    PID:4240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2996 -ip 2996
1⤵
PID:3552

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Port Monitors

T1547.010

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Port Monitors

T1547.010

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2996-4-0x0000000043E50000-0x0000000043E77000-memory.dmp

Filesize
156KB

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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