Analysis

  • max time kernel
    153s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 01:17

General

  • Target

    New Inquiry.exe

  • Size

    512KB

  • MD5

    8d11fb42f622b79bcbce3728437a049c

  • SHA1

    fbc0487e13597ca7982ecabfffb3abd2fd9483e3

  • SHA256

    b99e2897de9619797de119549af26eea284174a127d0757df613c1157faba6ce

  • SHA512

    c4de6e71b5c570d82e75f6491939f693295e7daa4f421d3bbeb078bf38374df46ae1f51d896247fbc8dad010c7f19924c1154ed250c44d07371fb08656d77316

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.cometgroup-eg.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Rcomet%group@123

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.cometgroup-eg.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Rcomet%group@123

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\New Inquiry.exe
    "C:\Users\Admin\AppData\Local\Temp\New Inquiry.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2308
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zHhnxcwpaTNbYO" /XML "C:\Users\Admin\AppData\Local\Temp\tmp53EC.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3980
    • C:\Users\Admin\AppData\Local\Temp\New Inquiry.exe
      "{path}"
      2⤵
        PID:820
      • C:\Users\Admin\AppData\Local\Temp\New Inquiry.exe
        "{path}"
        2⤵
        • Accesses Microsoft Outlook profiles
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • outlook_office_path
        • outlook_win_path
        PID:3904

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp53EC.tmp

      Filesize

      1KB

      MD5

      da742f3c4d64b11c382f4d8937e6b4d0

      SHA1

      80882d6daede17366ac0d9c4ac45d084a564701d

      SHA256

      1d2a56d1ce86bfe9166004c05a39923a66c6e61bed7bfcf6416ee01e4f219e4d

      SHA512

      d6bd45cdb211e2b07c837d4320ae97431643dc509165c254a69839624fd77191c57c1391f2a44fa6c3319b228589ed53a5658c9175c867f1c976274fff60acf8

    • memory/820-138-0x0000000000000000-mapping.dmp

    • memory/2308-130-0x00000000009C0000-0x0000000000A44000-memory.dmp

      Filesize

      528KB

    • memory/2308-131-0x00000000057C0000-0x0000000005D64000-memory.dmp

      Filesize

      5.6MB

    • memory/2308-132-0x00000000052B0000-0x0000000005342000-memory.dmp

      Filesize

      584KB

    • memory/2308-133-0x0000000005440000-0x000000000544A000-memory.dmp

      Filesize

      40KB

    • memory/2308-134-0x00000000090D0000-0x000000000916C000-memory.dmp

      Filesize

      624KB

    • memory/2308-135-0x00000000091E0000-0x0000000009246000-memory.dmp

      Filesize

      408KB

    • memory/3904-139-0x0000000000000000-mapping.dmp

    • memory/3904-140-0x0000000000400000-0x000000000044C000-memory.dmp

      Filesize

      304KB

    • memory/3904-141-0x0000000000E10000-0x0000000000E60000-memory.dmp

      Filesize

      320KB

    • memory/3980-136-0x0000000000000000-mapping.dmp