Analysis

  • max time kernel
    143s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/05/2023, 07:02

General

  • Target
    8355916 (61kb) .PDF_524256146100.exe
  • Size 728KB
  • Sample230526-httr2aec38
  • SHA256 be06d327419c53584beff876b97e9620c5e47b1cdca45d895d059cc2ed3644f7
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot1360033246:AAF6H8m6YrL09doyxtsvJzZ_cIl__BCF4aU/sendDocument

Signatures

  • AgentTesla

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

  • AgentTesla payload 1 IoCs
  • 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
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8355916 (61kb) .PDF_524256146100.exe
    "C:\Users\Admin\AppData\Local\Temp\8355916 (61kb) .PDF_524256146100.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3116
    • C:\Users\Admin\AppData\Local\Temp\8355916 (61kb) .PDF_524256146100.exe
      "C:\Users\Admin\AppData\Local\Temp\8355916 (61kb) .PDF_524256146100.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • outlook_office_path
      • outlook_win_path
      PID:4468

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        8355916 (61kb) .PDF_524256146100.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\8355916 (61kb) .PDF_524256146100.exe.log
        • Size 1KB
        • SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
        • MD5 SHA1 SHA512

        memory/3116-139-0x0000000006FD0000-0x000000000706C000-memory.dmp

        memory/3116-135-0x00000000053B0000-0x0000000005442000-memory.dmp

        memory/3116-136-0x0000000005370000-0x000000000537A000-memory.dmp

        memory/3116-137-0x0000000005310000-0x0000000005320000-memory.dmp

        memory/3116-138-0x0000000005310000-0x0000000005320000-memory.dmp

        memory/3116-133-0x0000000000900000-0x00000000009BC000-memory.dmp

        memory/3116-134-0x0000000005960000-0x0000000005F04000-memory.dmp

        memory/4468-140-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/4468-143-0x0000000005A50000-0x0000000005A60000-memory.dmp

        memory/4468-144-0x0000000006660000-0x00000000066C6000-memory.dmp

        memory/4468-145-0x0000000005A50000-0x0000000005A60000-memory.dmp

        memory/4468-147-0x0000000006860000-0x00000000068B0000-memory.dmp