Analysis

  • max time kernel
    144s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 23:48

General

  • Target

    [DHL] 7348255142.exe

  • Size

    542KB

  • MD5

    0043cc269ef53ad28a4b1339cd3b0aad

  • SHA1

    b39c9581ad34c6733d4a75104fad34dd21147bee

  • SHA256

    20486793ae98833178cb24180d58511ac0ec100a3c341b7a956b95a13cdd1e72

  • SHA512

    a3c5e7dc1f37a6fa9e9c2d626b6e901b404200d40a07fa941302ac4f5e59bc9a8306119c069c9e8b6de0835b0dbd0c2c958410f468baa28a5f8421bc6a0ef1c1

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    atk9202

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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\[DHL] 7348255142.exe
    "C:\Users\Admin\AppData\Local\Temp\[DHL] 7348255142.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1304
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GLijRAOs" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA017.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1412
    • C:\Users\Admin\AppData\Local\Temp\[DHL] 7348255142.exe
      "{path}"
      2⤵
        PID:1724
      • C:\Users\Admin\AppData\Local\Temp\[DHL] 7348255142.exe
        "{path}"
        2⤵
          PID:2044
        • C:\Users\Admin\AppData\Local\Temp\[DHL] 7348255142.exe
          "{path}"
          2⤵
          • Accesses Microsoft Outlook profiles
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: RenamesItself
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:2028

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmpA017.tmp

        Filesize

        1KB

        MD5

        f521fe3af66f00174d0f3dc850777e3f

        SHA1

        be67471a8fee0dd60e37b52eae09eb19261e2d4c

        SHA256

        b75e846bedc1b9acbfe2b8bc7f95795c71efcf9c433612b672544735c8505075

        SHA512

        1a4902463b11c6c19176bf493addd1b285952264c3160bdbe58df165568c8126acfe6066b2bdc7481f7f299aa35d308f6e231e4825545648361a4459f9240a94

      • memory/1304-54-0x0000000000140000-0x00000000001CE000-memory.dmp

        Filesize

        568KB

      • memory/1304-55-0x0000000076451000-0x0000000076453000-memory.dmp

        Filesize

        8KB

      • memory/1304-56-0x0000000000320000-0x000000000032A000-memory.dmp

        Filesize

        40KB

      • memory/1304-57-0x0000000004AE0000-0x0000000004B34000-memory.dmp

        Filesize

        336KB

      • memory/1412-58-0x0000000000000000-mapping.dmp

      • memory/2028-60-0x0000000000400000-0x000000000044C000-memory.dmp

        Filesize

        304KB

      • memory/2028-61-0x0000000000400000-0x000000000044C000-memory.dmp

        Filesize

        304KB

      • memory/2028-63-0x0000000000400000-0x000000000044C000-memory.dmp

        Filesize

        304KB

      • memory/2028-64-0x0000000000400000-0x000000000044C000-memory.dmp

        Filesize

        304KB

      • memory/2028-65-0x0000000000400000-0x000000000044C000-memory.dmp

        Filesize

        304KB

      • memory/2028-66-0x0000000000446F9E-mapping.dmp

      • memory/2028-68-0x0000000000400000-0x000000000044C000-memory.dmp

        Filesize

        304KB

      • memory/2028-70-0x0000000000400000-0x000000000044C000-memory.dmp

        Filesize

        304KB