Analysis

  • max time kernel
    127s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    08-07-2020 08:07

General

  • Target

    PO.pdf.exe

  • Size

    888KB

  • MD5

    56c6dc5e37250538b7bc7c24f39550a1

  • SHA1

    6edc1bdab87081c9dc36960767ddd19b493ba54e

  • SHA256

    a266556929b4c517579d1af3036d48929520bd91befd5e3259ce0622557e2bf8

  • SHA512

    b46d95a21a8b3c0784e6ed15a0724196ef3d874ca971a34a73fa43743967c7625e546e7e1cfb10126e1173e60c29f8117920092ef1f1d0a095b2a9b1e2808bc0

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    chinapeace@yandex.com
  • Password:
    chibuikelightwork1

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\PO.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1612
    • C:\Users\Admin\AppData\Local\Temp\PO.pdf.exe
      "{path}"
      2⤵
        PID:2768
      • C:\Users\Admin\AppData\Local\Temp\PO.pdf.exe
        "{path}"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2784

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Credential Access

    Credentials in Files

    3
    T1081

    Collection

    Data from Local System

    3
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\PO.pdf.exe.log
      MD5

      ef140ef600b2463c9e7dbf064a104046

      SHA1

      c08fd1853877be95575ea2e860dd8cafef31f54c

      SHA256

      ad8ae97fdeb174b20f02c7ddf9466981856d77d51133599b5954f48f78a1b616

      SHA512

      bf16df0994080bdc832cb39a312e0095de57608256fcf0d04d589e0bdf3283f918fb0d6ec86ea28a4b1af6db12813c52a724028f02330ebc3a9d32a4fcda706c

    • memory/2784-0-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/2784-1-0x0000000000446B9E-mapping.dmp