Analysis

  • max time kernel
    90s
  • max time network
    137s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/09/2024, 20:56

General

  • Target

    msvcr100.dll

  • Size

    750KB

  • MD5

    2b92a88e329f4845d31941967a3baa90

  • SHA1

    bbf341e7ed9947de0b5d84d93ca0bc4c8beb5500

  • SHA256

    649a7ab8e3b5c0940812e40eafc8f004979bb48bfc8f4bc7db9f2cbcdd715344

  • SHA512

    b94862e3f516402317a5467c6e0ff3dd23a967d90dae87dec1687157e43978c2d73c24fee71b4febeada54bb433ea4fcd16568d02fde1c4f9f50f6d7ba02408a

  • SSDEEP

    12288:dmCy3GUj/QGrB4F+FVW1rWNivf9JNxpEtwIy2i3Hlr0n1:dmCy3LQA4F8U1rWNivf9hpEam1

Score
3/10

Malware Config

Signatures

  • Program crash 1 IoCs
  • 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.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\msvcr100.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3992
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\msvcr100.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3388
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3388 -s 600
        3⤵
        • Program crash
        PID:3580
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3388 -ip 3388
    1⤵
      PID:316

    Network

    MITRE ATT&CK Enterprise v15

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    Downloads