Analysis

  • max time kernel
    130s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    12/08/2020, 06:39

General

  • Target
    western union.exe
  • Size 780KB
  • Sample200812-pmx5b5lwa2
  • SHA256 dec081544348d7000fcbd9ee30c3854733dc8b56f808f5dae28a21050fce03a2
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

Credentials
  • Protocol

    smtp

  • Host

    smtp.gmail.com

  • Port

    587

  • Password

    princeptlove41999

Signatures

  • AgentTesla

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

  • AgentTesla Payload 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\western union.exe
    "C:\Users\Admin\AppData\Local\Temp\western union.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3908
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v application /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\application.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3916
      • C:\Windows\SysWOW64\reg.exe
        REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v application /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\application.exe"
        3⤵
        • Adds Run key to start application
        PID:2896
    • C:\Users\Admin\AppData\Roaming\application.exe
      "C:\Users\Admin\AppData\Roaming\application.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2752
      • C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
        "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2152

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/2152-18-0x0000000000400000-0x0000000000450000-memory.dmp

        memory/2152-28-0x00000000054E0000-0x00000000054E1000-memory.dmp

        memory/2152-27-0x0000000004F30000-0x0000000004F31000-memory.dmp

        memory/2152-26-0x0000000004F70000-0x0000000004F71000-memory.dmp

        memory/2152-22-0x0000000073400000-0x0000000073AEE000-memory.dmp

        memory/2752-11-0x0000000073400000-0x0000000073AEE000-memory.dmp

        memory/2752-17-0x00000000050A0000-0x00000000050A3000-memory.dmp

        memory/3908-0-0x0000000073400000-0x0000000073AEE000-memory.dmp

        memory/3908-5-0x0000000005BB0000-0x0000000005BB1000-memory.dmp

        memory/3908-4-0x0000000005FD0000-0x0000000005FD1000-memory.dmp

        memory/3908-3-0x0000000002C80000-0x0000000002C8F000-memory.dmp

        memory/3908-1-0x0000000000980000-0x0000000000981000-memory.dmp