Analysis

  • max time kernel
    4294180s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20220311-en
  • submitted
    29/03/2022, 02:32

General

  • Target
    Payment slip.exe
  • Size 754KB
  • Sample220329-c1bxxaade2
  • SHA256 bbd568d64ddafd7cdcf62bb8ac92292680d8028f44461d84235db8f8e357b12c
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot2134979594:AAFk4QkrlHlt2a-q-EhIoHZBbzxSH0QxiBI/sendDocument

Signatures

  • AgentTesla

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

  • AgentTesla Payload 6 IoCs
  • Drops file in Drivers directory 1 IoCs
  • 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payment slip.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment slip.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1280
    • C:\Users\Admin\AppData\Local\Temp\Payment slip.exe
      "{path}"
      2⤵
      • Drops file in Drivers directory
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:332

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/332-58-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/332-59-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/332-61-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/332-62-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/332-63-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/332-66-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/332-68-0x0000000000400000-0x000000000043C000-memory.dmp

        memory/1280-54-0x0000000000AE0000-0x0000000000BA6000-memory.dmp

        memory/1280-55-0x0000000000860000-0x000000000086A000-memory.dmp

        memory/1280-56-0x00000000047A0000-0x0000000004826000-memory.dmp

        memory/1280-57-0x0000000001FB0000-0x0000000001FEC000-memory.dmp