f6001c8b8d9084654ef5f429e672257b690d651f96e3c493e2f65457b8eabea1 | Triage

Analysis

max time kernel
94s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
04-07-2024 23:23

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General

Target

msvcr71.dll
Size

340KB
MD5

86f1895ae8c5e8b17d99ece768a70732
SHA1

d5502a1d00787d68f548ddeebbde1eca5e2b38ca
SHA256

8094af5ee310714caebccaeee7769ffb08048503ba478b879edfef5f1a24fefe
SHA512

3b7ce2b67056b6e005472b73447d2226677a8cadae70428873f7efa5ed11a3b3dbf6b1a42c5b05b1f2b1d8e06ff50dfc6532f043af8452ed87687eefbf1791da
SSDEEP

6144:OcV9z83OtqxnEYmt3NEnvfF+Tbmbw6An8FMciFMNrb3YgxxpbCAOxO2ElvlE:Ooz83OtIEzW+/m/AyF7bCrO/E

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

Processes:

WerFault.exe

pid	pid_target	Process	procid_target
3936	2456	WerFault.exe	82

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	Process	procid_target
PID 1256 wrote to memory of 2456	1256	rundll32.exe	82
PID 1256 wrote to memory of 2456	1256	rundll32.exe	82
PID 1256 wrote to memory of 2456	1256	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\msvcr71.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1256
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\msvcr71.dll,#1
  2⤵
  PID:2456
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2456 -s 600
    3⤵
    - Program crash
    PID:3936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2456 -ip 2456
1⤵
PID:1404

Network

MITRE ATT&CK Matrix

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