Analysis

  • max time kernel
    117s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    11/07/2022, 12:25

General

  • Target
    Lucky Fixed.exe
  • Size 1.5MB
  • Sample220711-plk89abdb8
  • SHA256 2da5d10cdba79d8a8153eaf7ab3d4aad3afaf14c6d9098f7720858c61910948c
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Signatures

  • Echelon

    Echelon is a .NET stealer that targets passwords from browsers, email and cryptocurrency clients.

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Looks up external IP address via web service 5 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Lucky Fixed.exe
    "C:\Users\Admin\AppData\Local\Temp\Lucky Fixed.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:484
    • C:\ProgramData\Decoder.exe
      "C:\ProgramData\Decoder.exe"
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4484
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\.cmd""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2480
      • C:\Windows\system32\timeout.exe
        timeout 4
        3⤵
        • Delays execution with timeout.exe
        PID:2968

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        Decoder.exe

        • Path C:\ProgramData\Decoder.exe
        • Size 490KB
        • SHA256 20309707aa6fc678963aace7685a37839d439c850b1ba399bdbfbbeddc10ed4b
        • MD5 SHA1 SHA512 SSDEEP

        Decoder.exe

        • Path C:\ProgramData\Decoder.exe
        • Size 490KB
        • SHA256 20309707aa6fc678963aace7685a37839d439c850b1ba399bdbfbbeddc10ed4b
        • MD5 SHA1 SHA512 SSDEEP

        .cmd

        • Path C:\Users\Admin\AppData\Local\Temp\.cmd
        • Size 85B
        • SHA256 8bd49d7e7e6b2c2dc16a4cb0eebb8f28892775fad56c9e4aaa22d59f01883cd0
        • MD5 SHA1 SHA512

        memory/484-139-0x00007FFAFC2D0000-0x00007FFAFCD91000-memory.dmp

        memory/484-132-0x00007FFAFC2D0000-0x00007FFAFCD91000-memory.dmp

        memory/484-131-0x00007FFAFC2D0000-0x00007FFAFCD91000-memory.dmp

        memory/484-130-0x0000000000630000-0x00000000007B4000-memory.dmp

        memory/4484-140-0x0000000004C50000-0x00000000051F4000-memory.dmp

        memory/4484-141-0x0000000006460000-0x00000000064F2000-memory.dmp

        memory/4484-142-0x0000000007390000-0x00000000073F6000-memory.dmp