Analysis

  • max time kernel
    43s
  • max time network
    40s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    29-01-2021 18:20

General

  • Target

    Payment advice.exe

  • Size

    26KB

  • MD5

    a6b0c18fb26a8c6eed21a2ceadb3bcb6

  • SHA1

    8b419602ffe57720dde8617b9061f6876c8835a1

  • SHA256

    41fc81a9ebcb9f6405555db22b71ca764939d1dbcf113e446418e3cb6d394184

  • SHA512

    ed0bdfe0a0053ac02b40952af9a4bd63f5d3b5a5684e3a0c26d6f77c83c5d365f7a9b2e8ca3fe69e11c6dd84f51f3e0961ccdffcf62ed27e95915d8c63834f2e

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.tpcdel.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    EmlP@2018

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment advice.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment advice.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:548
    • C:\Users\Admin\AppData\Local\Temp\Payment advice.exe
      "C:\Users\Admin\AppData\Local\Temp\Payment advice.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:364

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/364-6-0x0000000000400000-0x0000000000450000-memory.dmp

    Filesize

    320KB

  • memory/364-7-0x000000000044A95E-mapping.dmp

  • memory/364-8-0x0000000074B50000-0x000000007523E000-memory.dmp

    Filesize

    6.9MB

  • memory/364-9-0x0000000000400000-0x0000000000450000-memory.dmp

    Filesize

    320KB

  • memory/364-11-0x0000000004DD0000-0x0000000004DD1000-memory.dmp

    Filesize

    4KB

  • memory/364-12-0x0000000004DD1000-0x0000000004DD2000-memory.dmp

    Filesize

    4KB

  • memory/548-2-0x0000000074B50000-0x000000007523E000-memory.dmp

    Filesize

    6.9MB

  • memory/548-3-0x0000000000370000-0x0000000000371000-memory.dmp

    Filesize

    4KB

  • memory/548-4-0x00000000040E0000-0x00000000040E1000-memory.dmp

    Filesize

    4KB

  • memory/548-5-0x0000000001F10000-0x0000000001F61000-memory.dmp

    Filesize

    324KB