Analysis

  • max time kernel
    148s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-12-2023 18:28

General

  • Target

    0073de463a0641808c9e6c5a08e4f222.dll

  • Size

    236KB

  • MD5

    0073de463a0641808c9e6c5a08e4f222

  • SHA1

    99f3956709c6f75f191e02876d311455258af878

  • SHA256

    8d0824c5f74fc47720a1598f5e4ada19ccd851e7548e3b7ab66ef8c0a074afc5

  • SHA512

    9a1a78ba4408da3c8b5221e80cedb455b762d3cfe62757563242e2c00b01a4709ae2211638e85692c42e8793a27e6396d888f5939e417e5b51858095f210808a

  • SSDEEP

    6144:tLOHgsqDQsf+YdotO7HlX0FDnH7SXaRY7Hbohjyu1MjYnjOGyj:t/DYLtOJXYD7y7HUhe6ti

Malware Config

Signatures

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\0073de463a0641808c9e6c5a08e4f222.dll,#1
    1⤵
      PID:3812
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3812 -s 752
        2⤵
        • Program crash
        PID:3944
    • C:\Windows\system32\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\0073de463a0641808c9e6c5a08e4f222.dll,#1
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:2704
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3812 -ip 3812
      1⤵
        PID:2268

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Credential Access

      Unsecured Credentials

      1
      T1552

      Credentials In Files

      1
      T1552.001

      Discovery

      Query Registry

      1
      T1012

      Collection

      Data from Local System

      1
      T1005

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/3812-0-0x0000000000400000-0x00000000004A4000-memory.dmp
        Filesize

        656KB

      • memory/3812-1-0x0000000000400000-0x00000000004A4000-memory.dmp
        Filesize

        656KB