Analysis

  • max time kernel
    125s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 22:57

General

  • Target

    USD SWIFT _679388 TT 190617_2019-NLCIV000003576_ES146009_30309679.exe

  • Size

    465KB

  • MD5

    5774b6feacc679debb8a1e1a203a3724

  • SHA1

    c0ee5daf232641ac5ed1b340707e3f9acdac03e3

  • SHA256

    b3dfc9fb1c0e38b8f1efb13d7ecf1e1d118ba2d9f465c246861eeb3f943e8626

  • SHA512

    8c24898e6a45a428aa99e0e5f22079ab1abdf1d1f43bb1c6a4c2abc06af0206ffe3ab19daba53553d1ed3d29ddaa8ee891c813811c8d0415f066b995ea7971c6

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.connectus-trade.net/
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    o^Z0CIU?^yL2

  • Protocol:
    ftp
  • Host:
    ftp://ftp.connectus-trade.net/
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    o^Z0CIU?^yL2

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 use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 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\USD SWIFT _679388 TT 190617_2019-NLCIV000003576_ES146009_30309679.exe
    "C:\Users\Admin\AppData\Local\Temp\USD SWIFT _679388 TT 190617_2019-NLCIV000003576_ES146009_30309679.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1892
    • C:\Users\Admin\AppData\Local\Temp\USD SWIFT _679388 TT 190617_2019-NLCIV000003576_ES146009_30309679.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:1228
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:1488

    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/1228-56-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1228-57-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1228-59-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1228-60-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1228-61-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1228-62-0x000000000044CCAE-mapping.dmp
    • memory/1228-64-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1228-66-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1228-68-0x00000000749E0000-0x0000000074F8B000-memory.dmp
      Filesize

      5.7MB

    • memory/1488-69-0x0000000000000000-mapping.dmp
    • memory/1892-54-0x00000000756A1000-0x00000000756A3000-memory.dmp
      Filesize

      8KB

    • memory/1892-55-0x0000000074A50000-0x0000000074FFB000-memory.dmp
      Filesize

      5.7MB