5f01f121168983ab53d3e4e523e344e3a78abdc3ca66cc2be0b54c8f755d8fbb

Analysis

max time kernel
150s
max time network
277s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-01-2025 16:00

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General

Target

vstdlib_s.dll
Size

519KB
MD5

5c245a8bc2765f02b838db613a2cdb49
SHA1

0952a9edaeebcb4afb1f746cc08e044ac2f2a4e3
SHA256

411fe1b7a84923e849be6844768240da54122f02dbe9611aa18f33e765ad108a
SHA512

ca2235ea5c01b173106cd33ead51ba4877cd85dcf978fe5468ab1b85b173ce2f85d2e846c4bd278cbffebd82b35674f3b2497271c25658536623f1d7aaee0f8f
SSDEEP

6144:PCB3aDbaQhzA12ytyjiIhGdoVnfNJ6mgVQttuZ83OmQKgR3ezMB:9zFAEytyjiIEoVnfz6r01yozI

Score

3^/10

discovery

Malware Config

Signatures

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1600	4748	WerFault.exe	82
2344	4748	WerFault.exe	82

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 948 wrote to memory of 4748	948	rundll32.exe	82
PID 948 wrote to memory of 4748	948	rundll32.exe	82
PID 948 wrote to memory of 4748	948	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\vstdlib_s.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:948
- 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:4748
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4748 -s 576
    3⤵
    - Program crash
    PID:1600
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4748 -s 796
    3⤵
    - Program crash
    PID:2344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4748 -ip 4748
1⤵
PID:2672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4748 -ip 4748
1⤵
PID:2836

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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