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Analysis

  • max time kernel
    104s
  • max time network
    106s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/09/2024, 13:59

General

  • Target

    RFQ-Al NASR-00388.exe

  • Size

    1.4MB

  • MD5

    a1a7b97334260279dd501040e0d8716c

  • SHA1

    c3aa5d13b6008b5d44084f53eedc524b77730eb2

  • SHA256

    8504a16c9bdf57fb23adb5346dd748e53c828472eed8c59d38159f33a3fa112a

  • SHA512

    fcf9a3923a34dafc09240eb2031a7e35508a40c7547907883717183b833751357c9f2792fb6eb7b1ab2ccc23c6094523e49c76cdb5e0a901631190e4d6c3c513

  • SSDEEP

    12288:jiQyGxHB+0zSaBBg4E/r1wG1OVW2yc5XzaNnfFiCJ47/Z/hS5ZkMvwYV4:mQyehHzSgBrET1BeeIzaNfMZpDtR

Malware Config

Extracted

Credentials

  • Protocol:
    ftp
  • Host:
    ftp.ercolina-usa.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    uy,o#mZj8$lY

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.ercolina-usa.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    uy,o#mZj8$lY

Signatures

  • AgentTesla

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • 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.

  • Adds Run key to start application 2 TTPs 1 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
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ-Al NASR-00388.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ-Al NASR-00388.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2328
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1008
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
      2⤵
        PID:4512

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1008-12-0x00000000062B0000-0x0000000006300000-memory.dmp

      Filesize

      320KB

    • memory/1008-16-0x0000000074390000-0x0000000074B40000-memory.dmp

      Filesize

      7.7MB

    • memory/1008-15-0x000000007439E000-0x000000007439F000-memory.dmp

      Filesize

      4KB

    • memory/1008-14-0x00000000063C0000-0x00000000063CA000-memory.dmp

      Filesize

      40KB

    • memory/1008-4-0x0000000000400000-0x0000000000444000-memory.dmp

      Filesize

      272KB

    • memory/1008-5-0x000000007439E000-0x000000007439F000-memory.dmp

      Filesize

      4KB

    • memory/1008-6-0x00000000053B0000-0x0000000005954000-memory.dmp

      Filesize

      5.6MB

    • memory/1008-7-0x0000000004FB0000-0x0000000005016000-memory.dmp

      Filesize

      408KB

    • memory/1008-8-0x0000000074390000-0x0000000074B40000-memory.dmp

      Filesize

      7.7MB

    • memory/1008-13-0x00000000063E0000-0x0000000006472000-memory.dmp

      Filesize

      584KB

    • memory/2328-3-0x000001B237070000-0x000001B237106000-memory.dmp

      Filesize

      600KB

    • memory/2328-9-0x00007FFDB74A0000-0x00007FFDB7F61000-memory.dmp

      Filesize

      10.8MB

    • memory/2328-0-0x00007FFDB74A3000-0x00007FFDB74A5000-memory.dmp

      Filesize

      8KB

    • memory/2328-2-0x00007FFDB74A0000-0x00007FFDB7F61000-memory.dmp

      Filesize

      10.8MB

    • memory/2328-1-0x000001B21CAD0000-0x000001B21CB00000-memory.dmp

      Filesize

      192KB