Analysis

  • max time kernel
    110s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-12-2024 05:58

General

  • Target

    Ref#20203216.exe

  • Size

    150KB

  • MD5

    9f9df5620e05da5bbf797b8531da35ab

  • SHA1

    22be3755c61f577fb39e4d71df0f8d9bfb90aa87

  • SHA256

    e97247599a336032a86ea5cb42b3b9c971567977e245b689d87c3f2ef3d200e4

  • SHA512

    365554a00606263906af881542ff87999c32d30389798219deb9cb384874a9700eba56ee883b1dc5238890a6a5ea15f8c3861182b267fb0a6b196bcbdf39e480

  • SSDEEP

    1536:aj9JxITkjSu9L8xIWCPAHWoTwuckbZrSV6ICB3pQpYvNX81zJfqK6XiFZKj:aj+TTup8omWiwLcCxSZQpe5WzJfV62M

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    162.254.34.31
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    ABwuRZS5Mjh5

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • Agenttesla family
  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Drops startup file 1 IoCs
  • 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 3 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
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3544
      • C:\Users\Admin\AppData\Local\Temp\Ref#20203216.exe
        "C:\Users\Admin\AppData\Local\Temp\Ref#20203216.exe"
        2⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Drops startup file
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2796
      • C:\Users\Admin\AppData\Local\Temp\Ref#20203216.exe
        "C:\Users\Admin\AppData\Local\Temp\Ref#20203216.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:384

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/384-1200-0x0000000000400000-0x0000000000440000-memory.dmp

      Filesize

      256KB

    • memory/384-1199-0x00000000751A0000-0x0000000075950000-memory.dmp

      Filesize

      7.7MB

    • memory/384-1202-0x00000000751A0000-0x0000000075950000-memory.dmp

      Filesize

      7.7MB

    • memory/384-1201-0x0000000005870000-0x00000000058D6000-memory.dmp

      Filesize

      408KB

    • memory/384-1203-0x0000000006E00000-0x0000000006E50000-memory.dmp

      Filesize

      320KB

    • memory/384-1206-0x00000000751A0000-0x0000000075950000-memory.dmp

      Filesize

      7.7MB

    • memory/384-1205-0x0000000006FA0000-0x0000000006FAA000-memory.dmp

      Filesize

      40KB

    • memory/384-1204-0x0000000006EF0000-0x0000000006F8C000-memory.dmp

      Filesize

      624KB

    • memory/2796-30-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-20-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-5-0x0000000006940000-0x0000000006EE4000-memory.dmp

      Filesize

      5.6MB

    • memory/2796-6-0x0000000006450000-0x00000000064E2000-memory.dmp

      Filesize

      584KB

    • memory/2796-36-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-34-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-70-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-68-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-66-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-64-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-58-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-56-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-54-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-52-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-50-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-48-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-46-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-45-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-40-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-38-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-3-0x0000000002C80000-0x0000000002C86000-memory.dmp

      Filesize

      24KB

    • memory/2796-28-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-26-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-24-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-22-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-4-0x0000000006290000-0x000000000638A000-memory.dmp

      Filesize

      1000KB

    • memory/2796-18-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-16-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-62-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-60-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-42-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-33-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-14-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-12-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-10-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-8-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-7-0x0000000006290000-0x0000000006384000-memory.dmp

      Filesize

      976KB

    • memory/2796-1183-0x00000000751A0000-0x0000000075950000-memory.dmp

      Filesize

      7.7MB

    • memory/2796-1185-0x00000000066B0000-0x00000000066FC000-memory.dmp

      Filesize

      304KB

    • memory/2796-1184-0x0000000006720000-0x000000000678A000-memory.dmp

      Filesize

      424KB

    • memory/2796-1186-0x00000000067A0000-0x00000000067F4000-memory.dmp

      Filesize

      336KB

    • memory/2796-2-0x00000000751A0000-0x0000000075950000-memory.dmp

      Filesize

      7.7MB

    • memory/2796-1-0x0000000000770000-0x000000000079A000-memory.dmp

      Filesize

      168KB

    • memory/2796-0-0x00000000751AE000-0x00000000751AF000-memory.dmp

      Filesize

      4KB

    • memory/2796-1192-0x00000000751A0000-0x0000000075950000-memory.dmp

      Filesize

      7.7MB

    • memory/2796-1195-0x00000000751AE000-0x00000000751AF000-memory.dmp

      Filesize

      4KB

    • memory/2796-1194-0x00000000751A0000-0x0000000075950000-memory.dmp

      Filesize

      7.7MB

    • memory/2796-1197-0x00000000751A0000-0x0000000075950000-memory.dmp

      Filesize

      7.7MB

    • memory/2796-1198-0x00000000751A0000-0x0000000075950000-memory.dmp

      Filesize

      7.7MB