Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    03/04/2024, 14:03

General

  • Target
    bec65c0ef5eb78d5e7996e148a4542f44b03acd9bf3ed7e7c33411d803b35cbb.exe
  • Size 656KB
  • Sample240403-rcpanaea81
  • SHA256 bec65c0ef5eb78d5e7996e148a4542f44b03acd9bf3ed7e7c33411d803b35cbb
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot6510566783:AAEqx5Uod2gO5hHDZ1xznAnHyO5uFneWegY/

Signatures

  • AgentTesla

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

  • 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.

  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bec65c0ef5eb78d5e7996e148a4542f44b03acd9bf3ed7e7c33411d803b35cbb.exe
    "C:\Users\Admin\AppData\Local\Temp\bec65c0ef5eb78d5e7996e148a4542f44b03acd9bf3ed7e7c33411d803b35cbb.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1720
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\DhsTBwvmLond.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2564
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DhsTBwvmLond" /XML "C:\Users\Admin\AppData\Local\Temp\tmp369A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2660
    • C:\Users\Admin\AppData\Local\Temp\bec65c0ef5eb78d5e7996e148a4542f44b03acd9bf3ed7e7c33411d803b35cbb.exe
      "C:\Users\Admin\AppData\Local\Temp\bec65c0ef5eb78d5e7996e148a4542f44b03acd9bf3ed7e7c33411d803b35cbb.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2576

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        tmp369A.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmp369A.tmp
        • Size 1KB
        • SHA256 9f0649b3b9450594f7b11e3d0d6da5238061fab4eb5f0c0c9ecb2bd663d786fa
        • MD5 SHA1 SHA512

        memory/1720-1-0x00000000745B0000-0x0000000074C9E000-memory.dmp

        memory/1720-0-0x0000000000340000-0x00000000003E8000-memory.dmp

        memory/1720-2-0x0000000004FB0000-0x0000000004FF0000-memory.dmp

        memory/1720-3-0x0000000000520000-0x0000000000532000-memory.dmp

        memory/1720-4-0x0000000000580000-0x000000000058C000-memory.dmp

        memory/1720-5-0x00000000052E0000-0x0000000005362000-memory.dmp

        memory/1720-25-0x00000000745B0000-0x0000000074C9E000-memory.dmp

        memory/2564-30-0x000000006E910000-0x000000006EEBB000-memory.dmp

        memory/2564-27-0x000000006E910000-0x000000006EEBB000-memory.dmp

        memory/2576-17-0x0000000000400000-0x0000000000440000-memory.dmp

        memory/2576-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        memory/2576-21-0x0000000000400000-0x0000000000440000-memory.dmp

        memory/2576-23-0x0000000000400000-0x0000000000440000-memory.dmp

        memory/2576-18-0x0000000000400000-0x0000000000440000-memory.dmp

        memory/2576-26-0x0000000000400000-0x0000000000440000-memory.dmp

        memory/2576-15-0x0000000000400000-0x0000000000440000-memory.dmp

        memory/2576-28-0x00000000745B0000-0x0000000074C9E000-memory.dmp

        memory/2576-29-0x0000000004B10000-0x0000000004B50000-memory.dmp

        memory/2576-13-0x0000000000400000-0x0000000000440000-memory.dmp

        memory/2576-31-0x00000000745B0000-0x0000000074C9E000-memory.dmp

        memory/2576-32-0x0000000004B10000-0x0000000004B50000-memory.dmp