Analysis

  • max time kernel
    103s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 00:16

General

  • Target

    RFQ.exe

  • Size

    598KB

  • MD5

    7b9991d17bf2be0aca3531b356d93196

  • SHA1

    267b664bb59f6b5c54305bd3ea92fa0313819683

  • SHA256

    fc412c0946f810a537d19f3f94c7da811f7404447b451499af528851502ee033

  • SHA512

    ae9060ffd256977a5abad8e07f8a7edd2b8a26b1fd964fad21d5c1cf59086dc2aed2c14170bc2f12cc1ca67be0c0fb7a623ebdb4915909ecf0f72278d528dd82

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.sherwjn.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    GRACE1234

Signatures

  • AgentTesla

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

  • AgentTesla Payload 6 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2020
    • C:\Users\Admin\AppData\Local\Temp\RFQ.exe
      "{path}"
      2⤵
        PID:952
      • C:\Users\Admin\AppData\Local\Temp\RFQ.exe
        "{path}"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:1732

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Credential Access

    Credentials in Files

    3
    T1081

    Collection

    Data from Local System

    3
    T1005

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1732-56-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/1732-57-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/1732-60-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/1732-61-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/1732-59-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/1732-62-0x000000000044714E-mapping.dmp
    • memory/1732-64-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/1732-66-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/1732-68-0x0000000074790000-0x0000000074D3B000-memory.dmp
      Filesize

      5.7MB

    • memory/2020-54-0x00000000755C1000-0x00000000755C3000-memory.dmp
      Filesize

      8KB

    • memory/2020-55-0x0000000074800000-0x0000000074DAB000-memory.dmp
      Filesize

      5.7MB