Analysis

  • max time kernel
    97s
  • max time network
    88s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    13/11/2020, 15:58

General

  • Target
    d786c5ecc0fd677c853ccc3bcff9136d7b15b1342ffd929188826e1a38d75e04.exe
  • Size 814KB
  • Sample201113-sjsdawnm4j
  • SHA256 d786c5ecc0fd677c853ccc3bcff9136d7b15b1342ffd929188826e1a38d75e04
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    mail.cosur.pe

  • Port

    587

  • Password

    C0m3rc14l%

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • AgentTesla Payload 3 IoCs
  • UPX packed file 3 IoCs

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

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d786c5ecc0fd677c853ccc3bcff9136d7b15b1342ffd929188826e1a38d75e04.exe
    "C:\Users\Admin\AppData\Local\Temp\d786c5ecc0fd677c853ccc3bcff9136d7b15b1342ffd929188826e1a38d75e04.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1056
    • C:\Users\Admin\AppData\Local\Temp\d786c5ecc0fd677c853ccc3bcff9136d7b15b1342ffd929188826e1a38d75e04.exe
      "C:\Users\Admin\AppData\Local\Temp\d786c5ecc0fd677c853ccc3bcff9136d7b15b1342ffd929188826e1a38d75e04.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      PID:1968

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1056-0-0x0000000000400000-0x00000000004D2000-memory.dmp

        memory/1968-1-0x0000000000400000-0x0000000000485000-memory.dmp

        memory/1968-3-0x0000000000400000-0x0000000000485000-memory.dmp

        memory/1968-4-0x0000000000400000-0x0000000000485000-memory.dmp

        memory/1968-5-0x0000000000390000-0x00000000003CC000-memory.dmp

        memory/1968-6-0x0000000000252000-0x0000000000253000-memory.dmp

        memory/1968-7-0x00000000002E0000-0x0000000000317000-memory.dmp

        memory/1968-9-0x0000000074730000-0x0000000074E1E000-memory.dmp