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Analysis

  • max time kernel
    31s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    19/05/2023, 12:40

General

  • Target

    AWB-18052023.exe

  • Size

    298KB

  • MD5

    b8b4d97f8f291a30d44ba156a4d4cbd1

  • SHA1

    2f545aad0c50c37754d9716bee7b9a37d5289910

  • SHA256

    2e5e690fe5a9607c51574cd1e8444591a9dd524fafc78911ff9f09ee5242bff1

  • SHA512

    7a8f9a452824555833158769c6a5247ca174679bdc8a527d3535b3fdd0fc05d1ead8097cb006c6a25dfce6493950798624ec81893122687ac5c1c9ea70fa387a

  • SSDEEP

    6144:6UFxbIBMP6HyvbefvpM9mkT7XmHlPF/6IC17Cjj1VA:VbgIuO9mQmHZFSRC

Malware Config

Extracted

Family

agenttesla

Credentials

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 behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AWB-18052023.exe
    "C:\Users\Admin\AppData\Local\Temp\AWB-18052023.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2028
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
        PID:1976
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:1920

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1920-63-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1920-68-0x0000000000D10000-0x0000000000D50000-memory.dmp

      Filesize

      256KB

    • memory/1920-86-0x0000000000D10000-0x0000000000D50000-memory.dmp

      Filesize

      256KB

    • memory/1920-61-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1920-58-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1920-59-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1920-62-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1920-60-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1920-65-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1920-67-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/2028-54-0x00000000003D0000-0x0000000000420000-memory.dmp

      Filesize

      320KB

    • memory/2028-55-0x0000000000380000-0x00000000003C6000-memory.dmp

      Filesize

      280KB

    • memory/2028-57-0x0000000004B60000-0x0000000004BA0000-memory.dmp

      Filesize

      256KB

    • memory/2028-56-0x0000000000450000-0x000000000045A000-memory.dmp

      Filesize

      40KB