Analysis

  • max time kernel
    64s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/02/2023, 09:24

General

  • Target
    651cf4057a192ee7e21a69996c2b049b.exe
  • Size 1.0MB
  • Sample230227-lc29mach68
  • SHA256 cbabbb56010d51c93caec5d8a9e90c966685ebe9b20efb4f414b824eac64e022
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    ftp

  • Host

    ftp://ftp.valvulasthermovalve.cl

  • Port

    21

  • Password

    LILKOOLL14!!

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\651cf4057a192ee7e21a69996c2b049b.exe
    "C:\Users\Admin\AppData\Local\Temp\651cf4057a192ee7e21a69996c2b049b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4500
    • C:\Users\Admin\AppData\Local\Temp\651cf4057a192ee7e21a69996c2b049b.exe
      "C:\Users\Admin\AppData\Local\Temp\651cf4057a192ee7e21a69996c2b049b.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:456

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        651cf4057a192ee7e21a69996c2b049b.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\651cf4057a192ee7e21a69996c2b049b.exe.log
        • Size 1KB
        • SHA256 7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
        • MD5 SHA1 SHA512

        memory/456-140-0x0000000000400000-0x0000000000430000-memory.dmp

        memory/456-147-0x0000000007410000-0x00000000075D2000-memory.dmp

        memory/456-146-0x00000000071C0000-0x0000000007210000-memory.dmp

        memory/456-145-0x0000000005810000-0x0000000005820000-memory.dmp

        memory/456-144-0x0000000005810000-0x0000000005820000-memory.dmp

        memory/456-143-0x0000000005730000-0x0000000005796000-memory.dmp

        memory/4500-136-0x0000000005630000-0x000000000563A000-memory.dmp

        memory/4500-139-0x0000000009310000-0x00000000093AC000-memory.dmp

        memory/4500-138-0x0000000005890000-0x00000000058A0000-memory.dmp

        memory/4500-137-0x0000000005890000-0x00000000058A0000-memory.dmp

        memory/4500-133-0x0000000000B50000-0x0000000000C64000-memory.dmp

        memory/4500-135-0x00000000056A0000-0x0000000005732000-memory.dmp

        memory/4500-134-0x0000000005BB0000-0x0000000006154000-memory.dmp