Analysis

  • max time kernel
    175s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 00:21

General

  • Target

    Purchase Order.exe

  • Size

    455KB

  • MD5

    0de607d7e44900630a03902716cde06d

  • SHA1

    2996fc9fd8b2b09c56b26cfa675acfabe8ae9139

  • SHA256

    6567bac453fabf7e0049d881db8ee06561d7aee2262b8181c8e8788a3e18999d

  • SHA512

    93577c57782f91cfd88feee3746bae75a051d31aceb64b8291d5b8ecedc520e75473aedbd4ca9903a91bdd4aec3ebb33dd30d2bc37670ef843bc9c4b9443579f

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.threewaystoharems.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    sales@123456

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 7 IoCs
  • Suspicious behavior: RenamesItself 1 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\Purchase Order.exe
    "C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:952
    • C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
      "{path}"
      2⤵
        PID:2040
      • C:\Users\Admin\AppData\Local\Temp\Purchase Order.exe
        "{path}"
        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:2044

    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/952-54-0x0000000000070000-0x00000000000E8000-memory.dmp
      Filesize

      480KB

    • memory/952-55-0x0000000000380000-0x000000000038A000-memory.dmp
      Filesize

      40KB

    • memory/952-56-0x0000000001FB0000-0x0000000002018000-memory.dmp
      Filesize

      416KB

    • memory/952-57-0x0000000004EC0000-0x0000000004F0C000-memory.dmp
      Filesize

      304KB

    • memory/2044-58-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/2044-59-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/2044-61-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/2044-62-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/2044-63-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/2044-64-0x000000000044737E-mapping.dmp
    • memory/2044-66-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/2044-68-0x0000000000400000-0x000000000044C000-memory.dmp
      Filesize

      304KB

    • memory/2044-69-0x00000000755C1000-0x00000000755C3000-memory.dmp
      Filesize

      8KB