Analysis

  • max time kernel
    122s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    12/02/2022, 00:50

General

  • Target

    bcafd3989097e0631a1dbb1fb996690c7c5240c81e6496184268a8f4f2a840ec.exe

  • Size

    386KB

  • MD5

    dfc02658cb106d327ec0379beb50df44

  • SHA1

    a2e49b450c91e6ade762e4d1a037b42a054b028b

  • SHA256

    bcafd3989097e0631a1dbb1fb996690c7c5240c81e6496184268a8f4f2a840ec

  • SHA512

    c768f5646b9c20c4108c3b157f564a38d10d06473af53b3cc0e8c523df0e476c0adba0657ee57f6c34c51c7278f75c6e4d3569c5cfd87dfee6eacaa0d52e0c86

Malware Config

Extracted

Family

cryptbot

C2

gomdhv42.top

morsof04.top

Attributes
  • payload_url

    http://peulnm16.top/download.php?file=parter.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\bcafd3989097e0631a1dbb1fb996690c7c5240c81e6496184268a8f4f2a840ec.exe
    "C:\Users\Admin\AppData\Local\Temp\bcafd3989097e0631a1dbb1fb996690c7c5240c81e6496184268a8f4f2a840ec.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious use of WriteProcessMemory
    PID:1352
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c rd /s /q C:\Users\Admin\AppData\Local\Temp\lChjuRVtG & timeout 4 & del /f /q "C:\Users\Admin\AppData\Local\Temp\bcafd3989097e0631a1dbb1fb996690c7c5240c81e6496184268a8f4f2a840ec.exe"
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:520
      • C:\Windows\SysWOW64\timeout.exe
        timeout 4
        3⤵
        • Delays execution with timeout.exe
        PID:932

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • memory/1352-53-0x0000000000968000-0x000000000098E000-memory.dmp

          Filesize

          152KB

        • memory/1352-54-0x0000000075CE1000-0x0000000075CE3000-memory.dmp

          Filesize

          8KB

        • memory/1352-55-0x0000000000968000-0x000000000098E000-memory.dmp

          Filesize

          152KB

        • memory/1352-56-0x0000000000220000-0x0000000000265000-memory.dmp

          Filesize

          276KB

        • memory/1352-57-0x0000000000400000-0x0000000000448000-memory.dmp

          Filesize

          288KB