Analysis

  • max time kernel
    118s
  • max time network
    140s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    12/02/2022, 12:58

General

  • Target

    089998c6cf33a70076c0b7457f140a7875a6bd06613705561c2c0d1cb3dcbf0e.exe

  • Size

    3.3MB

  • MD5

    567375246cc940c692c8a4096197ab4d

  • SHA1

    09d8d3ced838d86dbc30b34ecee96fa58b479efc

  • SHA256

    089998c6cf33a70076c0b7457f140a7875a6bd06613705561c2c0d1cb3dcbf0e

  • SHA512

    6542f2574a283447b7111a7792c8f90a8bad30df5a168db0b7b3560590c7a8398492928391876eee0c682147268a7362fd46a619d998fe5007a06b6e3b68ab3c

Malware Config

Extracted

Family

cryptbot

C2

gomdsx15.top

morxub01.top

Attributes
  • payload_url

    http://peulaq01.top/download.php?file=lintel.exe

Signatures

  • CryptBot

    A C++ stealer distributed widely in bundle with other software.

  • Deletes itself 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\089998c6cf33a70076c0b7457f140a7875a6bd06613705561c2c0d1cb3dcbf0e.exe
    "C:\Users\Admin\AppData\Local\Temp\089998c6cf33a70076c0b7457f140a7875a6bd06613705561c2c0d1cb3dcbf0e.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1628
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\xxDcXrfpTVAx & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\089998c6cf33a70076c0b7457f140a7875a6bd06613705561c2c0d1cb3dcbf0e.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1280
      • C:\Windows\SysWOW64\timeout.exe
        timeout 4
        3⤵
        • Delays execution with timeout.exe
        PID:652

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • memory/1628-55-0x0000000075801000-0x0000000075803000-memory.dmp

          Filesize

          8KB

        • memory/1628-57-0x0000000000230000-0x0000000000231000-memory.dmp

          Filesize

          4KB

        • memory/1628-56-0x000000000051E000-0x0000000000520000-memory.dmp

          Filesize

          8KB

        • memory/1628-58-0x0000000002030000-0x0000000002078000-memory.dmp

          Filesize

          288KB