Analysis

  • max time kernel
    118s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    08-07-2020 09:58

General

  • Target

    doc07675720200626101857.exe

  • Size

    930KB

  • MD5

    243a515982e6eba872d6366ec71d63b6

  • SHA1

    85b71070f258dce1b5f92ea4aaa117419f6b8828

  • SHA256

    420da876f8efdf70da0ec0ccd1b7aaa09547b6868d5fc655c05b50eadf20c360

  • SHA512

    cfaf4f25351c10962d143de38df4758d1359224975520bc1345d284ab62254b75e6115c1283b47331b312e0e624329f8c402235cb8682d9007419ad0b89122a4

Malware Config

Signatures

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • UPX packed file 3 IoCs

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

  • 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 1 IoCs

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

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\doc07675720200626101857.exe
    "C:\Users\Admin\AppData\Local\Temp\doc07675720200626101857.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    • Suspicious behavior: MapViewOfSection
    • Suspicious behavior: EnumeratesProcesses
    PID:1496
    • C:\Users\Admin\AppData\Local\Temp\doc07675720200626101857.exe
      "C:\Users\Admin\AppData\Local\Temp\doc07675720200626101857.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      PID:1020

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1020-0-0x0000000000400000-0x0000000000542000-memory.dmp

    Filesize

    1.3MB

  • memory/1020-1-0x0000000000540BB0-mapping.dmp

  • memory/1020-2-0x0000000000400000-0x0000000000542000-memory.dmp

    Filesize

    1.3MB

  • memory/1020-3-0x0000000000400000-0x0000000000542000-memory.dmp

    Filesize

    1.3MB

  • memory/1020-4-0x0000000001EC0000-0x0000000001F5A000-memory.dmp

    Filesize

    616KB

  • memory/1020-5-0x0000000000252000-0x0000000000253000-memory.dmp

    Filesize

    4KB

  • memory/1020-6-0x0000000000260000-0x00000000002F4000-memory.dmp

    Filesize

    592KB