Analysis

  • max time kernel
    125s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 18:52

General

  • Target

    Invoice.exe

  • Size

    533KB

  • MD5

    676213812fcd942f150519418bad81f0

  • SHA1

    63c6513df8879238baef6869bd2c2c5324626337

  • SHA256

    c8f62dda091a29ed35c26e212840d0c260c9f420f5a7940b2b1f088ad10a3c2d

  • SHA512

    945e542fc9dca0dc00f342749fd4662fadf68b2284b8955211771f8a4d2bf897e12ee10fe9435b57bdd757aa954a239ed0f42d5e787f827113e69f825262b730

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.visgring.com
  • Port:
    587
  • Username:
    px@visgring.com
  • Password:
    uqtQpAv1

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 3 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\Invoice.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1596
    • C:\Users\Admin\AppData\Local\Temp\Invoice.exe
      "{path}"
      2⤵
        PID:1768
      • C:\Users\Admin\AppData\Local\Temp\Invoice.exe
        "{path}"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:1764

    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/1596-54-0x0000000000FC0000-0x000000000104C000-memory.dmp
      Filesize

      560KB

    • memory/1596-55-0x0000000075781000-0x0000000075783000-memory.dmp
      Filesize

      8KB

    • memory/1596-56-0x0000000000460000-0x0000000000468000-memory.dmp
      Filesize

      32KB

    • memory/1596-57-0x0000000004450000-0x00000000044A4000-memory.dmp
      Filesize

      336KB

    • memory/1764-58-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/1764-59-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/1764-61-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/1764-62-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/1764-63-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/1764-64-0x000000000044695E-mapping.dmp
    • memory/1764-66-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/1764-68-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB