Analysis

  • max time kernel
    74s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 11:01

General

  • Target

    Authorized Docsx-1011279_pdf.exe

  • Size

    958KB

  • MD5

    2859536d947d374208b75ab68c3a89ec

  • SHA1

    bc79eaecfe58b2f0c0e65b96ac8df676bba914a3

  • SHA256

    5d8edb52dabb7850b75a9bf3f899756425401e26b221fba7117c9627ae844590

  • SHA512

    ae128ad0d5c95e23bf7fb2542d87a4b1248ada569f8e84a77bf4fe5d1f3cd0cd873c9a831a52dc2da2c4f65d6eb7c983f6accb5934779f79e2179d1ad795e85a

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.samco-sg.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    @NNiiSl4

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Authorized Docsx-1011279_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Authorized Docsx-1011279_pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1664
    • C:\Users\Admin\AppData\Local\Temp\Authorized Docsx-1011279_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Authorized Docsx-1011279_pdf.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1972

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1664-54-0x0000000076C81000-0x0000000076C83000-memory.dmp

    Filesize

    8KB

  • memory/1664-56-0x0000000000250000-0x0000000000259000-memory.dmp

    Filesize

    36KB

  • memory/1972-55-0x00000000004A22D0-mapping.dmp

  • memory/1972-57-0x00000000002D0000-0x000000000031C000-memory.dmp

    Filesize

    304KB

  • memory/1972-58-0x00000000002D0000-0x000000000031C000-memory.dmp

    Filesize

    304KB

  • memory/1972-60-0x0000000074FE0000-0x000000007558B000-memory.dmp

    Filesize

    5.7MB