Analysis

  • max time kernel
    135s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/03/2023, 22:46

General

  • Target
    Invoice & Packing list.exe
  • Size 613KB
  • Sample230315-2py1qsff92
  • SHA256 d37ac5f67be37a7cd0fa09b2d0ffb1e5190caf1abbb2183fd00b0c7a35a204b1
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot2134979594:AAFk4QkrlHlt2a-q-EhIoHZBbzxSH0QxiBI/

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 behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Invoice & Packing list.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice & Packing list.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4452
    • C:\Users\Admin\AppData\Local\Temp\Invoice & Packing list.exe
      "{path}"
      2⤵
        PID:3796
      • C:\Users\Admin\AppData\Local\Temp\Invoice & Packing list.exe
        "{path}"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:4432

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          Invoice & Packing list.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Invoice & Packing list.exe.log
          • Size 1KB
          • SHA256 e16024b092a026a9dc00df69d4b9bbcab7b2dc178dc5291fc308a1abc9304a99
          • MD5 SHA1 SHA512

          memory/4432-140-0x0000000000400000-0x0000000000430000-memory.dmp

          memory/4432-147-0x0000000004FC0000-0x0000000004FD0000-memory.dmp

          memory/4432-146-0x0000000006C90000-0x0000000006E52000-memory.dmp

          memory/4432-145-0x0000000006A70000-0x0000000006AC0000-memory.dmp

          memory/4432-144-0x0000000004E40000-0x0000000004EA6000-memory.dmp

          memory/4432-143-0x0000000004FC0000-0x0000000004FD0000-memory.dmp

          memory/4452-136-0x00000000054B0000-0x000000000554C000-memory.dmp

          memory/4452-139-0x0000000005490000-0x00000000054A0000-memory.dmp

          memory/4452-138-0x0000000005490000-0x00000000054A0000-memory.dmp

          memory/4452-137-0x0000000005350000-0x000000000535A000-memory.dmp

          memory/4452-133-0x0000000000930000-0x00000000009D0000-memory.dmp

          memory/4452-135-0x0000000005370000-0x0000000005402000-memory.dmp

          memory/4452-134-0x0000000005A60000-0x0000000006004000-memory.dmp