Analysis

  • max time kernel
    132s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 23:35

General

  • Target

    payment slip pdf.exe

  • Size

    576KB

  • MD5

    73446b4f7828240c2176f6dbac0db41e

  • SHA1

    17a9f153ab2ce844a8e2ef1f21b674fdc63f827a

  • SHA256

    9b8bfd519d8bbe5a7c285f61c73abef27b4e18a22076d036698ec943b5e61c01

  • SHA512

    0b34eb5d9a57d4f5de8988e7f0e3abf5a58235e8e5a895cbd88aa606661a9f8182ceb96881fd2aeb2652351ec26baf51acb4350a827b802e0635af66c61a7aad

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    lFAvm@p#@z92

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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\payment slip pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\payment slip pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1712
    • C:\Users\Admin\AppData\Local\Temp\payment slip pdf.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:1756
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:1508

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    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/1508-70-0x0000000000000000-mapping.dmp
    • memory/1712-54-0x0000000000D30000-0x0000000000DC6000-memory.dmp
      Filesize

      600KB

    • memory/1712-55-0x00000000763E1000-0x00000000763E3000-memory.dmp
      Filesize

      8KB

    • memory/1712-56-0x0000000000800000-0x000000000080A000-memory.dmp
      Filesize

      40KB

    • memory/1712-57-0x0000000004F50000-0x0000000004FA8000-memory.dmp
      Filesize

      352KB

    • memory/1756-61-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1756-59-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1756-62-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1756-63-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1756-64-0x000000000044C3DE-mapping.dmp
    • memory/1756-66-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1756-68-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1756-58-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB