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Analysis

  • max time kernel
    141s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/06/2024, 00:27

General

  • Target

    invoice copy.pdf.exe

  • Size

    681KB

  • MD5

    8a627edde43c47a592b9f4c9f29f489a

  • SHA1

    74f0491f86065a952ad14d19ceb3b59528289af6

  • SHA256

    7200b362dfb336483d716fbbd84930894e5c8c28acd6a2ceff2b5da5cd3894fc

  • SHA512

    a860d208aaf8ea9f15c41170aba13a9e8a08d972c7bad0251bd53a5cb0cbbb162578b11806a92a9a6f1dea6a44061c3ed1e6166aa0f1d50c87c3e177c3189921

  • SSDEEP

    12288:LjBQofmNv8Y2hdFXsnlnOde3+JGDXwLZT0ldgyZbCmlAjt:xQZb8VCr3+EgedF3A5

Malware Config

Signatures

  • AgentTesla

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

  • AgentTesla payload 6 IoCs
  • 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.

  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 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
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\invoice copy.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\invoice copy.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3752
    • C:\Users\Admin\AppData\Local\Temp\invoice copy.pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\invoice copy.pdf.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:3488
  • 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 --no-appcompat-clear --field-trial-handle=4168,i,1697479186275492802,18058102846092193784,262144 --variations-seed-version --mojo-platform-channel-handle=4292 /prefetch:8
    1⤵
      PID:688

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3488-10-0x0000000000730000-0x000000000076C000-memory.dmp

      Filesize

      240KB

    • memory/3488-7-0x0000000000400000-0x0000000000484000-memory.dmp

      Filesize

      528KB

    • memory/3488-11-0x0000000000730000-0x000000000076C000-memory.dmp

      Filesize

      240KB

    • memory/3488-12-0x0000000000400000-0x0000000000484000-memory.dmp

      Filesize

      528KB

    • memory/3488-6-0x0000000000400000-0x0000000000484000-memory.dmp

      Filesize

      528KB

    • memory/3488-4-0x0000000000400000-0x0000000000484000-memory.dmp

      Filesize

      528KB

    • memory/3488-9-0x0000000000400000-0x0000000000484000-memory.dmp

      Filesize

      528KB

    • memory/3488-23-0x0000000000400000-0x0000000000484000-memory.dmp

      Filesize

      528KB

    • memory/3752-2-0x00000000023A0000-0x00000000023B2000-memory.dmp

      Filesize

      72KB

    • memory/3752-3-0x00000000023C0000-0x00000000023C1000-memory.dmp

      Filesize

      4KB

    • memory/3752-0-0x0000000002310000-0x0000000002311000-memory.dmp

      Filesize

      4KB

    • memory/3752-8-0x0000000000400000-0x00000000004B0000-memory.dmp

      Filesize

      704KB

    • memory/3752-1-0x00000000023A0000-0x00000000023B2000-memory.dmp

      Filesize

      72KB