Analysis

  • max time kernel
    107s
  • max time network
    107s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    21-01-2021 18:32

General

  • Target

    kdotx.exe

  • Size

    57KB

  • MD5

    b95249a3ceacb06a049d3f211479fc7e

  • SHA1

    5de29c60c381140276e5e96b473018a73bdd53eb

  • SHA256

    bd600300188d8cb735f9e4afcc580398a2842126c9a5e884259fd2d46ac103af

  • SHA512

    3591c84202c405366e4fb38befabfe14fa3324745e32d1cc254c803e4e9a4bb7871afba6ee4649a2f33f97186640acbab2e75da4be9440d52711e416eac9bf47

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.sardaplywood.com
  • Port:
    587
  • Username:
    superstars@sardaplywood.com
  • Password:
    sup123st45

Signatures

  • AgentTesla

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

  • AgentTesla Payload 6 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.

  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 40 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\kdotx.exe
    "C:\Users\Admin\AppData\Local\Temp\kdotx.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1684
    • C:\Users\Admin\AppData\Local\Temp\kdotx.exe
      "C:\Users\Admin\AppData\Local\Temp\kdotx.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:888
    • C:\Users\Admin\AppData\Local\Temp\kdotx.exe
      "C:\Users\Admin\AppData\Local\Temp\kdotx.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1448
    • C:\Users\Admin\AppData\Local\Temp\kdotx.exe
      "C:\Users\Admin\AppData\Local\Temp\kdotx.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1216
    • C:\Users\Admin\AppData\Local\Temp\kdotx.exe
      "C:\Users\Admin\AppData\Local\Temp\kdotx.exe"
      2⤵
        PID:932
      • C:\Users\Admin\AppData\Local\Temp\kdotx.exe
        "C:\Users\Admin\AppData\Local\Temp\kdotx.exe"
        2⤵
          PID:1364
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1684 -s 1108
          2⤵
          • Program crash
          PID:440

      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

      • memory/888-14-0x0000000000400000-0x000000000043C000-memory.dmp
        Filesize

        240KB

      • memory/888-33-0x0000000004880000-0x0000000004881000-memory.dmp
        Filesize

        4KB

      • memory/888-7-0x0000000000400000-0x000000000043C000-memory.dmp
        Filesize

        240KB

      • memory/888-8-0x000000000043769E-mapping.dmp
      • memory/888-11-0x0000000074670000-0x0000000074D5E000-memory.dmp
        Filesize

        6.9MB

      • memory/932-22-0x0000000074670000-0x0000000074D5E000-memory.dmp
        Filesize

        6.9MB

      • memory/932-20-0x000000000043769E-mapping.dmp
      • memory/1216-34-0x00000000049E1000-0x00000000049E2000-memory.dmp
        Filesize

        4KB

      • memory/1216-32-0x00000000049E0000-0x00000000049E1000-memory.dmp
        Filesize

        4KB

      • memory/1216-19-0x0000000074670000-0x0000000074D5E000-memory.dmp
        Filesize

        6.9MB

      • memory/1216-17-0x000000000043769E-mapping.dmp
      • memory/1364-27-0x000000000043769E-mapping.dmp
      • memory/1364-28-0x0000000074670000-0x0000000074D5E000-memory.dmp
        Filesize

        6.9MB

      • memory/1448-13-0x0000000074670000-0x0000000074D5E000-memory.dmp
        Filesize

        6.9MB

      • memory/1448-10-0x000000000043769E-mapping.dmp
      • memory/1448-31-0x0000000004810000-0x0000000004811000-memory.dmp
        Filesize

        4KB

      • memory/1684-12-0x00000000006A0000-0x00000000006A1000-memory.dmp
        Filesize

        4KB

      • memory/1684-2-0x0000000074670000-0x0000000074D5E000-memory.dmp
        Filesize

        6.9MB

      • memory/1684-6-0x0000000004BC0000-0x0000000004C1C000-memory.dmp
        Filesize

        368KB

      • memory/1684-5-0x0000000000D60000-0x0000000000D61000-memory.dmp
        Filesize

        4KB

      • memory/1684-3-0x0000000000F40000-0x0000000000F41000-memory.dmp
        Filesize

        4KB