8094af5ee310714caebccaeee7769ffb08048503ba478b879edfef5f1a24fefe

Analysis

max time kernel
149s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
23/05/2026, 01:40

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General

Target
msvcr71.dll
Size 340KB
Sample260523-b32exacy41
SHA256 8094af5ee310714caebccaeee7769ffb08048503ba478b879edfef5f1a24fefe
MD5 86f1895ae8c5e8b17d99ece768a70732
SHA1 d5502a1d00787d68f548ddeebbde1eca5e2b38ca
SHA512 3b7ce2b67056b6e005472b73447d2226677a8cadae70428873f7efa5ed11a3b3dbf6b1a42c5b05b1f2b1d8e06ff50dfc6532f043af8452ed87687eefbf1791da
SSDEEP 6144:OcV9z83OtqxnEYmt3NEnvfF+Tbmbw6An8FMciFMNrb3YgxxpbCAOxO2ElvlE:Ooz83OtIEzW+/m/AyF7bCrO/E
TLSH
T10374C012B1A3CCB3D0B6007449596B599BBFE43046798A73BFE80E4E4F746D1D726A23
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3340	8	WerFault.exe	80

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 1 IoCs

description	pid	Process	procid_target
PID 2484 wrote to memory of 8	2484	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\msvcr71.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\msvcr71.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:8
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 8 -s 448
    3⤵
    - Program crash
    PID:3340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 8 -ip 8
1⤵
PID:4388

Network

MITRE ATT&CK Enterprise v16

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 v16

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