Analysis

  • max time kernel
    94s
  • max time network
    121s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    27-07-2021 15:06

General

  • Target

    PO 98246.exe

  • Size

    940KB

  • MD5

    87fb6b88ed5e0ad768dd1fb8fc9c46af

  • SHA1

    739749390782129616a8a776ff745a748de3048a

  • SHA256

    9cb1e7f66fe3c5e0ba2e1d525dddf593ceb57df41a49b874228c61322e6a4861

  • SHA512

    e3c4177f3de2aecb953b0f6efed90d969e9a3d4254985ad4ae58a917554961164321570fcf83ae8e5d95c6c5f9fc008ce2c241faaad28c9b01bbc3f82d081ef5

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    paola.micheli@copangroup.xyz
  • Password:
    gibson.1990

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Drops file in Drivers directory 1 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PO 98246.exe
    "C:\Users\Admin\AppData\Local\Temp\PO 98246.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:664
    • C:\Users\Admin\AppData\Local\Temp\PO 98246.exe
      "C:\Users\Admin\AppData\Local\Temp\PO 98246.exe"
      2⤵
        PID:3576
      • C:\Users\Admin\AppData\Local\Temp\PO 98246.exe
        "C:\Users\Admin\AppData\Local\Temp\PO 98246.exe"
        2⤵
          PID:3580
        • C:\Users\Admin\AppData\Local\Temp\PO 98246.exe
          "C:\Users\Admin\AppData\Local\Temp\PO 98246.exe"
          2⤵
          • Drops file in Drivers directory
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3692

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Defense Evasion

      Modify Registry

      1
      T1112

      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_v4.0_32\UsageLogs\PO 98246.exe.log
        MD5

        a8225268a0cfd23e60750624c7fe5113

        SHA1

        92567d25c5ef4fc85c9dda60a0625e0bb9c72d97

        SHA256

        2d820f6fb6c206a25e346f653150ae314d58de33c4e15ac600e7618093ac2261

        SHA512

        8f7ecc25006b79173ae9fdca2843a315df5aa259882953e4864aafefcb8ca62c0d0a4f16baf2f0fdc3b0a8235bd63fdb345f991e9d5c5cce290a0ef032ce2ef1

      • memory/664-123-0x00000000053D0000-0x00000000053DF000-memory.dmp
        Filesize

        60KB

      • memory/664-116-0x00000000057E0000-0x00000000057E1000-memory.dmp
        Filesize

        4KB

      • memory/664-118-0x0000000005230000-0x0000000005231000-memory.dmp
        Filesize

        4KB

      • memory/664-119-0x0000000005140000-0x0000000005141000-memory.dmp
        Filesize

        4KB

      • memory/664-120-0x00000000050F0000-0x0000000005182000-memory.dmp
        Filesize

        584KB

      • memory/664-121-0x00000000052E0000-0x0000000005348000-memory.dmp
        Filesize

        416KB

      • memory/664-117-0x0000000005190000-0x0000000005191000-memory.dmp
        Filesize

        4KB

      • memory/664-114-0x0000000000850000-0x0000000000851000-memory.dmp
        Filesize

        4KB

      • memory/664-122-0x00000000053F0000-0x00000000053F1000-memory.dmp
        Filesize

        4KB

      • memory/3692-125-0x000000000043760E-mapping.dmp
      • memory/3692-124-0x0000000000400000-0x000000000043C000-memory.dmp
        Filesize

        240KB

      • memory/3692-131-0x0000000005360000-0x000000000585E000-memory.dmp
        Filesize

        5.0MB

      • memory/3692-132-0x0000000005800000-0x0000000005801000-memory.dmp
        Filesize

        4KB

      • memory/3692-133-0x0000000005FC0000-0x0000000005FC1000-memory.dmp
        Filesize

        4KB

      • memory/3692-135-0x00000000011A0000-0x00000000011A1000-memory.dmp
        Filesize

        4KB