Analysis

  • max time kernel
    116s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/04/2024, 18:56

General

  • Target

    Scan0020.exe

  • Size

    638KB

  • MD5

    a2db85fcad3878617112ac3266282587

  • SHA1

    57fb3301594c5577e6c39fdb6388883995cf24d6

  • SHA256

    f88b736fe32b6e458ce63fb67b8bf0ebf6388e6e35e23bf9bcb46893375115f1

  • SHA512

    742b317d09599b21ead1b570ebfdc0dc27197755456090041d56fb2c1e1077ac7f9cbbf77b82d567155db5090acabbae6f8cb1b1692df61ab1439d1cebcc0cbc

  • SSDEEP

    12288:KI+asIzXZ9hvqT2dsWA+DMmyA8wyFtySS7WEZ2a6GwIL8XzuH0:flyuR1DMmryDE4g

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    e)cnIdR1

Signatures

  • AgentTesla

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

  • AgentTesla payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • 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 4 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\Scan0020.exe
    "C:\Users\Admin\AppData\Local\Temp\Scan0020.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4980
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bsDYPzuh" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB98C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4256
    • C:\Users\Admin\AppData\Local\Temp\Scan0020.exe
      "C:\Users\Admin\AppData\Local\Temp\Scan0020.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:5036

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Scan0020.exe.log

          Filesize

          2KB

          MD5

          fbd5e75bae4e3d2db57a0f9b5ed0df97

          SHA1

          fcb87f79f8748e213d407b78f932f105f04c98e5

          SHA256

          d87a05d026303c360e84bf915b81bea3f8bc81edcb3a53cb1a64d3852f4e9367

          SHA512

          639c3c4d3e57113dda7c980d2f1752579701d5371a3170b5f65a6f21ab427e130b2a3ff226de3fbbea0041be6e476ae98714d4ab75a17e2988fa5974ffa1a803

        • memory/4980-10-0x00000000060C0000-0x000000000615C000-memory.dmp

          Filesize

          624KB

        • memory/4980-21-0x0000000075280000-0x0000000075A30000-memory.dmp

          Filesize

          7.7MB

        • memory/4980-3-0x0000000004CE0000-0x0000000004D72000-memory.dmp

          Filesize

          584KB

        • memory/4980-4-0x0000000002690000-0x00000000026A0000-memory.dmp

          Filesize

          64KB

        • memory/4980-5-0x0000000004C70000-0x0000000004C7A000-memory.dmp

          Filesize

          40KB

        • memory/4980-6-0x0000000004CC0000-0x0000000004CDC000-memory.dmp

          Filesize

          112KB

        • memory/4980-7-0x00000000051B0000-0x00000000051C8000-memory.dmp

          Filesize

          96KB

        • memory/4980-8-0x0000000075280000-0x0000000075A30000-memory.dmp

          Filesize

          7.7MB

        • memory/4980-9-0x0000000002690000-0x00000000026A0000-memory.dmp

          Filesize

          64KB

        • memory/4980-0-0x0000000075280000-0x0000000075A30000-memory.dmp

          Filesize

          7.7MB

        • memory/4980-2-0x00000000051F0000-0x0000000005794000-memory.dmp

          Filesize

          5.6MB

        • memory/4980-1-0x00000000001B0000-0x0000000000256000-memory.dmp

          Filesize

          664KB

        • memory/4980-11-0x0000000006190000-0x0000000006204000-memory.dmp

          Filesize

          464KB

        • memory/5036-17-0x0000000000400000-0x000000000043C000-memory.dmp

          Filesize

          240KB

        • memory/5036-20-0x0000000075280000-0x0000000075A30000-memory.dmp

          Filesize

          7.7MB

        • memory/5036-22-0x0000000005570000-0x0000000005580000-memory.dmp

          Filesize

          64KB

        • memory/5036-23-0x0000000005850000-0x0000000005868000-memory.dmp

          Filesize

          96KB

        • memory/5036-24-0x00000000064F0000-0x0000000006556000-memory.dmp

          Filesize

          408KB

        • memory/5036-25-0x0000000075280000-0x0000000075A30000-memory.dmp

          Filesize

          7.7MB

        • memory/5036-26-0x0000000005570000-0x0000000005580000-memory.dmp

          Filesize

          64KB

        • memory/5036-27-0x0000000006660000-0x00000000066B0000-memory.dmp

          Filesize

          320KB