Analysis

  • max time kernel
    36s
  • max time network
    8s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    04/02/2021, 16:43

General

  • Target
    e561ae3cedb6f9fc0ecff559c62788b0.exe
  • Size 293KB
  • Sample210204-5d3bbhwkds
  • SHA256 38933984f5ff8b71c054d1c1155e308ac02377b89315ef17cea859178a30dbab
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • gootkit

Botnet
  • 8888

C2
  • sslsecurehost.com

  • securessl256.com

Attributes
  • vendor_id

    8888

Signatures

  • Gootkit

    Gootkit is a banking trojan, where large parts are written in node.JS.

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

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 90 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e561ae3cedb6f9fc0ecff559c62788b0.exe
    "C:\Users\Admin\AppData\Local\Temp\e561ae3cedb6f9fc0ecff559c62788b0.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1056
    • C:\Users\Admin\AppData\Local\Temp\e561ae3cedb6f9fc0ecff559c62788b0.exe
      "C:\Users\Admin\AppData\Local\Temp\e561ae3cedb6f9fc0ecff559c62788b0.exe" -l
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:240
      • C:\Users\Admin\AppData\Local\Temp\e561ae3cedb6f9fc0ecff559c62788b0.exe
        C:\Users\Admin\AppData\Local\Temp\e561ae3cedb6f9fc0ecff559c62788b0.exe
        3⤵
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1668
        • C:\Windows\SysWOW64\mstsc.exe
          C:\Windows\System32\mstsc.exe "C:\Users\Admin\AppData\Local\Temp\e561ae3cedb6f9fc0ecff559c62788b0.exe"
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1544
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c ""C:\Users\Admin\AppData\Local\Temp\259306780.bat" "C:\Users\Admin\AppData\Local\Temp\e561ae3cedb6f9fc0ecff559c62788b0.exe""
            5⤵
            • Deletes itself
            • Suspicious use of WriteProcessMemory
            PID:1808
            • C:\Windows\SysWOW64\attrib.exe
              attrib -r -s -h "C:\Users\Admin\AppData\Local\Temp\e561ae3cedb6f9fc0ecff559c62788b0.exe"
              6⤵
              • Views/modifies file attributes
              PID:756

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1056-2-0x0000000075A61000-0x0000000075A63000-memory.dmp

        memory/1544-14-0x0000000000080000-0x00000000000A0000-memory.dmp

        memory/1668-5-0x0000000000400000-0x0000000000420000-memory.dmp

        memory/1668-13-0x0000000000400000-0x0000000000420000-memory.dmp