Analysis

  • max time kernel
    235s
  • max time network
    251s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-09-2024 14:27

General

  • Target

    Fatura nº 4052804664.scr

  • Size

    693KB

  • MD5

    a0de9f804b692969d93ba2a8011f73a4

  • SHA1

    247b67ca3f7d4f1017a537abb96384136936b78b

  • SHA256

    cc58af4374174d975a7fc1abc5f43a0f537da1482334b95631ea9d5668db7304

  • SHA512

    7dca8968d20f3159c75a5b6effb67456a30309f4652e9b45fa577ef19fe23a6532aa69532f4c28ae819be0da3a455b44971836fce7a041ffd143904c13cbbce9

  • SSDEEP

    12288:nS993Hgi8MefNnUlSAgsWYTfxCIpIj4LcGPhGgXHXelLEAmD:qTmM77lTfxC/GpGgA

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5187914704:AAHhM5YfeLYR_Ow0fgwMOZKO7je7btbh5DA/

Signatures

  • AgentTesla

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • 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.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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 SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Fatura nº 4052804664.scr
    "C:\Users\Admin\AppData\Local\Temp\Fatura nº 4052804664.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1656
    • C:\Users\Admin\AppData\Local\Temp\Fatura nº 4052804664.scr
      "C:\Users\Admin\AppData\Local\Temp\Fatura nº 4052804664.scr"
      2⤵
        PID:4936
      • C:\Users\Admin\AppData\Local\Temp\Fatura nº 4052804664.scr
        "C:\Users\Admin\AppData\Local\Temp\Fatura nº 4052804664.scr"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:2084
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3808,i,3387628439405076340,17957358341235678872,262144 --variations-seed-version --mojo-platform-channel-handle=4272 /prefetch:8
      1⤵
        PID:4904

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/1656-10-0x0000000009470000-0x000000000950C000-memory.dmp

        Filesize

        624KB

      • memory/1656-4-0x0000000005A00000-0x0000000005A0A000-memory.dmp

        Filesize

        40KB

      • memory/1656-0-0x000000007450E000-0x000000007450F000-memory.dmp

        Filesize

        4KB

      • memory/1656-15-0x0000000074500000-0x0000000074CB0000-memory.dmp

        Filesize

        7.7MB

      • memory/1656-3-0x0000000005830000-0x00000000058C2000-memory.dmp

        Filesize

        584KB

      • memory/1656-5-0x0000000074500000-0x0000000074CB0000-memory.dmp

        Filesize

        7.7MB

      • memory/1656-6-0x0000000006E10000-0x0000000006E20000-memory.dmp

        Filesize

        64KB

      • memory/1656-7-0x000000007450E000-0x000000007450F000-memory.dmp

        Filesize

        4KB

      • memory/1656-8-0x0000000074500000-0x0000000074CB0000-memory.dmp

        Filesize

        7.7MB

      • memory/1656-9-0x0000000006ED0000-0x0000000006F4E000-memory.dmp

        Filesize

        504KB

      • memory/1656-2-0x0000000005DE0000-0x0000000006384000-memory.dmp

        Filesize

        5.6MB

      • memory/1656-1-0x0000000000DD0000-0x0000000000E84000-memory.dmp

        Filesize

        720KB

      • memory/2084-11-0x0000000000400000-0x000000000043C000-memory.dmp

        Filesize

        240KB

      • memory/2084-14-0x0000000074500000-0x0000000074CB0000-memory.dmp

        Filesize

        7.7MB

      • memory/2084-13-0x0000000074500000-0x0000000074CB0000-memory.dmp

        Filesize

        7.7MB

      • memory/2084-16-0x00000000055C0000-0x00000000055D8000-memory.dmp

        Filesize

        96KB

      • memory/2084-17-0x00000000061C0000-0x0000000006226000-memory.dmp

        Filesize

        408KB

      • memory/2084-19-0x0000000006C50000-0x0000000006CA0000-memory.dmp

        Filesize

        320KB

      • memory/2084-23-0x0000000074500000-0x0000000074CB0000-memory.dmp

        Filesize

        7.7MB

      • memory/2084-24-0x0000000074500000-0x0000000074CB0000-memory.dmp

        Filesize

        7.7MB

      • memory/2084-25-0x0000000074500000-0x0000000074CB0000-memory.dmp

        Filesize

        7.7MB