Analysis

  • max time kernel
    105s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/02/2023, 11:11

General

  • Target
    8f87fe0b5603293f372feac809d815c0.exe
  • Size 840KB
  • Sample230222-m99kmsch2v
  • SHA256 53eb83560df949284e8d00992e7a5acf16c77ea64ee89c0bc4b16d394640456b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot5350270151:AAHiqzi7CQnEGEk3Xi-PyJX8ov0x6B-8S1I/

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 2 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 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\8f87fe0b5603293f372feac809d815c0.exe
    "C:\Users\Admin\AppData\Local\Temp\8f87fe0b5603293f372feac809d815c0.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4528
    • C:\Users\Admin\AppData\Local\Temp\8f87fe0b5603293f372feac809d815c0.exe
      "C:\Users\Admin\AppData\Local\Temp\8f87fe0b5603293f372feac809d815c0.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:2892

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        8f87fe0b5603293f372feac809d815c0.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\8f87fe0b5603293f372feac809d815c0.exe.log
        • Size 1KB
        • SHA256 ee17be860e129795491b4be61f5ac446b16f2679e056114024ffc72b2e23a9b7
        • MD5 SHA1 SHA512

        memory/2892-141-0x0000000000400000-0x0000000000430000-memory.dmp

        memory/2892-148-0x0000000005160000-0x0000000005170000-memory.dmp

        memory/2892-147-0x0000000006D70000-0x0000000006F32000-memory.dmp

        memory/2892-146-0x0000000006B50000-0x0000000006BA0000-memory.dmp

        memory/2892-145-0x0000000005160000-0x0000000005170000-memory.dmp

        memory/2892-144-0x0000000005020000-0x0000000005086000-memory.dmp

        memory/4528-136-0x0000000005AF0000-0x0000000005B00000-memory.dmp

        memory/4528-140-0x0000000007560000-0x00000000075FC000-memory.dmp

        memory/4528-139-0x0000000005AF0000-0x0000000005B00000-memory.dmp

        memory/4528-138-0x0000000006460000-0x0000000006606000-memory.dmp

        memory/4528-137-0x0000000005980000-0x000000000598A000-memory.dmp

        memory/4528-133-0x0000000000EE0000-0x0000000000FB8000-memory.dmp

        memory/4528-135-0x00000000059A0000-0x0000000005A32000-memory.dmp

        memory/4528-134-0x0000000005EB0000-0x0000000006454000-memory.dmp