Analysis

  • max time kernel
    152s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23/11/2022, 22:08

General

  • Target

    b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe

  • Size

    732KB

  • MD5

    516988b83c8f25c047cc4bfaa24fd7eb

  • SHA1

    4ebb58d6c0c7162a82b8432a1b7ad9f7409ebdd7

  • SHA256

    b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6

  • SHA512

    1cea8a4c8f5728a6c3819f1309aaca03fa03cb8f818cd582265eea640ea8f7f7f4a9cd1c56dc6efa36a92230f6de8293a72cd05a098e4ff9cdcdc321afb81ecb

  • SSDEEP

    12288:FHs9LkboBd3ndY9giv39REcgWGGNOYH/3p31jaHjQ9OXQHeYMthFkXywWIz1um:FM90i3dtiFREcgWGGNOYHvXOQ9SYMDFG

Malware Config

Extracted

Family

xtremerat

C2

roma1996.no-ip.org

Signatures

  • Detect XtremeRAT payload 9 IoCs
  • XtremeRAT

    The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.

  • Modifies Installed Components in the registry 2 TTPs 4 IoCs
  • UPX packed file 9 IoCs

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

  • Adds Run key to start application 2 TTPs 9 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
    "C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:752
    • C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
      C:\Users\Admin\AppData\Local\Temp\b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1100
      • C:\Windows\SysWOW64\svchost.exe
        svchost.exe
        3⤵
        • Modifies Installed Components in the registry
        • Adds Run key to start application
        PID:820
      • C:\Windows\SysWOW64\notepad.exe
        notepad.exe
        3⤵
        • Modifies Installed Components in the registry
        • Adds Run key to start application
        • Drops file in Windows directory
        • Suspicious use of SetWindowsHookEx
        PID:1984

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Windows\InstallDir\svchost.exe

          Filesize

          732KB

          MD5

          516988b83c8f25c047cc4bfaa24fd7eb

          SHA1

          4ebb58d6c0c7162a82b8432a1b7ad9f7409ebdd7

          SHA256

          b93c634e5494c31077e6d87e143c4da80517d3064910e9f786403394c52bd0f6

          SHA512

          1cea8a4c8f5728a6c3819f1309aaca03fa03cb8f818cd582265eea640ea8f7f7f4a9cd1c56dc6efa36a92230f6de8293a72cd05a098e4ff9cdcdc321afb81ecb

        • memory/752-63-0x0000000000400000-0x00000000007DC000-memory.dmp

          Filesize

          3.9MB

        • memory/752-55-0x0000000000400000-0x00000000007DC000-memory.dmp

          Filesize

          3.9MB

        • memory/752-54-0x0000000075D01000-0x0000000075D03000-memory.dmp

          Filesize

          8KB

        • memory/820-66-0x0000000010000000-0x0000000010048000-memory.dmp

          Filesize

          288KB

        • memory/820-80-0x0000000010000000-0x0000000010048000-memory.dmp

          Filesize

          288KB

        • memory/820-77-0x0000000010000000-0x0000000010048000-memory.dmp

          Filesize

          288KB

        • memory/1100-67-0x0000000000400000-0x00000000007DC000-memory.dmp

          Filesize

          3.9MB

        • memory/1100-62-0x0000000010000000-0x0000000010048000-memory.dmp

          Filesize

          288KB

        • memory/1100-74-0x0000000010000000-0x0000000010048000-memory.dmp

          Filesize

          288KB

        • memory/1100-65-0x0000000010000000-0x0000000010048000-memory.dmp

          Filesize

          288KB

        • memory/1100-58-0x0000000010000000-0x0000000010048000-memory.dmp

          Filesize

          288KB

        • memory/1100-64-0x0000000010000000-0x0000000010048000-memory.dmp

          Filesize

          288KB

        • memory/1984-76-0x0000000010000000-0x0000000010048000-memory.dmp

          Filesize

          288KB

        • memory/1984-79-0x0000000010000000-0x0000000010048000-memory.dmp

          Filesize

          288KB