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25/02/2024, 01:18

240225-bnxheahe87 10

Analysis

  • max time kernel
    92s
  • max time network
    116s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/02/2024, 01:18

General

  • Target

    44f706c6348828fd978cbe2fb035450175276e11f75717df19fd513d9116a585.exe

  • Size

    95KB

  • MD5

    89bc6750ff71019eab26fe5284a762df

  • SHA1

    fc3c19e874aa6ce6c035c63bbd50101680cd1ceb

  • SHA256

    44f706c6348828fd978cbe2fb035450175276e11f75717df19fd513d9116a585

  • SHA512

    71134c5b76a9fa69e18d12d8ea028209eae2d5f35fbded393efaaa392ae67341cc228b4e21dc876f050c12211282c1061a48a4351d5a8b16fea9e4a74677cdbb

  • SSDEEP

    1536:XGD5sF8F2tS9mpUPG+vsyKO9+6wg7Dg1DjixS1nb5gHhBP8Okl+jnGUGYebmsYxh:XGD5siwtS9mpYiy5DwjCcb5gBBP8QyRw

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Contacts a large (5046) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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.

  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • 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
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\44f706c6348828fd978cbe2fb035450175276e11f75717df19fd513d9116a585.exe
    "C:\Users\Admin\AppData\Local\Temp\44f706c6348828fd978cbe2fb035450175276e11f75717df19fd513d9116a585.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3028
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
      2⤵
        PID:2412
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
        2⤵
          PID:2248
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
          2⤵
            PID:3680
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
            2⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1476
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
            2⤵
              PID:1472

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/1476-12-0x00000000066F0000-0x0000000006782000-memory.dmp

            Filesize

            584KB

          • memory/1476-7-0x00000000057E0000-0x0000000005D84000-memory.dmp

            Filesize

            5.6MB

          • memory/1476-15-0x0000000005220000-0x0000000005230000-memory.dmp

            Filesize

            64KB

          • memory/1476-14-0x0000000074F60000-0x0000000075710000-memory.dmp

            Filesize

            7.7MB

          • memory/1476-13-0x0000000006680000-0x000000000668A000-memory.dmp

            Filesize

            40KB

          • memory/1476-5-0x0000000000400000-0x0000000000442000-memory.dmp

            Filesize

            264KB

          • memory/1476-11-0x0000000006600000-0x0000000006650000-memory.dmp

            Filesize

            320KB

          • memory/1476-6-0x0000000074F60000-0x0000000075710000-memory.dmp

            Filesize

            7.7MB

          • memory/1476-8-0x0000000005330000-0x0000000005396000-memory.dmp

            Filesize

            408KB

          • memory/3028-9-0x000002587B510000-0x000002587B520000-memory.dmp

            Filesize

            64KB

          • memory/3028-10-0x00007FFBBA800000-0x00007FFBBB2C1000-memory.dmp

            Filesize

            10.8MB

          • memory/3028-1-0x00007FFBBA800000-0x00007FFBBB2C1000-memory.dmp

            Filesize

            10.8MB

          • memory/3028-0-0x0000025878F50000-0x0000025878F6C000-memory.dmp

            Filesize

            112KB

          • memory/3028-4-0x00007FFBBA800000-0x00007FFBBB2C1000-memory.dmp

            Filesize

            10.8MB

          • memory/3028-3-0x000002587B710000-0x000002587B7A6000-memory.dmp

            Filesize

            600KB

          • memory/3028-2-0x000002587B510000-0x000002587B520000-memory.dmp

            Filesize

            64KB