Analysis

  • max time kernel
    131s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    25-06-2022 03:46

General

  • Target

    e5fd3dbff62980d7f0a5abeb0f982352ba378eb76f372c3d7add7be144c61136.exe

  • Size

    523KB

  • MD5

    eb3bb19e79139d5ff456a6bdfbf0491e

  • SHA1

    65264eca6544f09ffe8d4da32b99128431780e83

  • SHA256

    e5fd3dbff62980d7f0a5abeb0f982352ba378eb76f372c3d7add7be144c61136

  • SHA512

    874cdeda4ca5de77aa6b5b8bb460cd87f90b9689819d92a9ba16f1519fb0d8e6b9e29ea730378d08d41402c539429c27eb057bfb6e570f942faf49eb62a2465f

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    brightins@yandex.ru
  • Password:
    wokoma10

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    brightins@yandex.ru
  • Password:
    wokoma10

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 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 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e5fd3dbff62980d7f0a5abeb0f982352ba378eb76f372c3d7add7be144c61136.exe
    "C:\Users\Admin\AppData\Local\Temp\e5fd3dbff62980d7f0a5abeb0f982352ba378eb76f372c3d7add7be144c61136.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:880
    • C:\Users\Admin\AppData\Local\Temp\e5fd3dbff62980d7f0a5abeb0f982352ba378eb76f372c3d7add7be144c61136.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:1748
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:4324

    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

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\e5fd3dbff62980d7f0a5abeb0f982352ba378eb76f372c3d7add7be144c61136.exe.log
      Filesize

      496B

      MD5

      7baa6583f69f63f7230df9bf98448356

      SHA1

      fe9eb85b57192362da704a3c130377fe83862320

      SHA256

      a632504621b4cac1d5ba5465c7ad9b30f3d036e9838682506782124a211bed4f

      SHA512

      0e72541791281c0fdac1f5fc6beea0b9eb8766b2a386aecb92cb8a44e5b59b7114c79194393ddeff957ffe86021a311caed7ce2731b863d97ad441870efbc051

    • memory/880-130-0x00000000750A0000-0x0000000075651000-memory.dmp
      Filesize

      5.7MB

    • memory/880-131-0x00000000750A0000-0x0000000075651000-memory.dmp
      Filesize

      5.7MB

    • memory/880-135-0x00000000750A0000-0x0000000075651000-memory.dmp
      Filesize

      5.7MB

    • memory/1748-132-0x0000000000000000-mapping.dmp
    • memory/1748-133-0x0000000000400000-0x0000000000452000-memory.dmp
      Filesize

      328KB

    • memory/1748-136-0x00000000750A0000-0x0000000075651000-memory.dmp
      Filesize

      5.7MB

    • memory/1748-137-0x00000000750A0000-0x0000000075651000-memory.dmp
      Filesize

      5.7MB

    • memory/4324-138-0x0000000000000000-mapping.dmp