aa86c065eb6782b94d0ed16ad51a1d042db48e0acc3b7891a205d98135d43bda

Analysis

max time kernel
96s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-01-2025 06:20

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General

Target

vstdlib_s.dll
Size

519KB
MD5

464b80302d3e5f1a12030f2afd15e8c0
SHA1

fa4a9d98b5272f3d1110188b53264b03134f1bcd
SHA256

954ecb7e90993cf1e3d426a00512f0591a0c385d986db7b923b872289a659ed9
SHA512

03686460522be3f830142c95b86dbaa686888a1fd22dc218ef6f0a6e1b7b1f8d65444b47d909c09348c6fa003d5f000998f640524aa001d719f4381c78e004d1
SSDEEP

6144:pHSB3aD4IaQhzA12ytyjiIhGdoVnfNJ6mgVQttuZ83OmQKgR3ezzm:x2IzFAEytyjiIEoVnfz6r01yozy

Score

3^/10

discovery

Malware Config

Signatures

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1328	1644	WerFault.exe	83
1904	1644	WerFault.exe	83

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 1408 wrote to memory of 1644	1408	rundll32.exe	83
PID 1408 wrote to memory of 1644	1408	rundll32.exe	83
PID 1408 wrote to memory of 1644	1408	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\vstdlib_s.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1408
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\vstdlib_s.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1644
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1644 -s 576
    3⤵
    - Program crash
    PID:1328
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1644 -s 804
    3⤵
    - Program crash
    PID:1904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1644 -ip 1644
1⤵
PID:3160

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 1644 -ip 1644
1⤵
PID:2636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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