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Analysis

  • max time kernel
    122s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    12/10/2023, 16:44

General

  • Target

    Purchase contract 23K11-086.exe

  • Size

    680KB

  • MD5

    d87dc3556f0ee0c56863f83c1dfa88ab

  • SHA1

    434f9728b7e5708cc6e3b24cd4df437fb454d5bf

  • SHA256

    024c11134a00bda4eaf6a4528131e86652aaa1c1931d71c2f413c7c133b74c75

  • SHA512

    af6d0be79f90e361a032e97e449b8327d6dac987b53f7b6531c186724664e8a912602088dad62d365d689d41d34d37c12b1439ccf74217d49b4e0806acb2151e

  • SSDEEP

    12288:zYgAfDuHOXCcBq08I209uEE3hctaEqqNs7pK3bvHRu0f730PmPAJs:zYggcGql09bIetaEqqTrxu0o02

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Purchase contract 23K11-086.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase contract 23K11-086.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1768
    • C:\Users\Admin\AppData\Local\Temp\Purchase contract 23K11-086.exe
      "C:\Users\Admin\AppData\Local\Temp\Purchase contract 23K11-086.exe"
      2⤵
        PID:2696
      • C:\Users\Admin\AppData\Local\Temp\Purchase contract 23K11-086.exe
        "C:\Users\Admin\AppData\Local\Temp\Purchase contract 23K11-086.exe"
        2⤵
          PID:2700
        • C:\Users\Admin\AppData\Local\Temp\Purchase contract 23K11-086.exe
          "C:\Users\Admin\AppData\Local\Temp\Purchase contract 23K11-086.exe"
          2⤵
            PID:2956
          • C:\Users\Admin\AppData\Local\Temp\Purchase contract 23K11-086.exe
            "C:\Users\Admin\AppData\Local\Temp\Purchase contract 23K11-086.exe"
            2⤵
            • Accesses Microsoft Outlook profiles
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • outlook_office_path
            • outlook_win_path
            PID:2744

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1768-0-0x0000000010DF0000-0x0000000010E9E000-memory.dmp

          Filesize

          696KB

        • memory/1768-1-0x0000000074510000-0x0000000074BFE000-memory.dmp

          Filesize

          6.9MB

        • memory/1768-2-0x0000000004B60000-0x0000000004BA0000-memory.dmp

          Filesize

          256KB

        • memory/1768-3-0x00000000002F0000-0x0000000000308000-memory.dmp

          Filesize

          96KB

        • memory/1768-4-0x0000000074510000-0x0000000074BFE000-memory.dmp

          Filesize

          6.9MB

        • memory/1768-5-0x0000000004B60000-0x0000000004BA0000-memory.dmp

          Filesize

          256KB

        • memory/1768-6-0x0000000000310000-0x000000000031A000-memory.dmp

          Filesize

          40KB

        • memory/1768-7-0x000000000A090000-0x000000000A10C000-memory.dmp

          Filesize

          496KB

        • memory/1768-20-0x0000000074510000-0x0000000074BFE000-memory.dmp

          Filesize

          6.9MB

        • memory/2744-9-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2744-10-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2744-11-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2744-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/2744-15-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2744-17-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2744-19-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2744-8-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/2744-21-0x0000000074510000-0x0000000074BFE000-memory.dmp

          Filesize

          6.9MB

        • memory/2744-22-0x00000000047B0000-0x00000000047F0000-memory.dmp

          Filesize

          256KB

        • memory/2744-23-0x0000000074510000-0x0000000074BFE000-memory.dmp

          Filesize

          6.9MB