Analysis

  • max time kernel
    105s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 02:05

General

  • Target

    Business Proposal AECCFC Scope #20200511.exe

  • Size

    680KB

  • MD5

    3beb56d44ca6ca36b58b99ccff173d89

  • SHA1

    d497bad8ccce793615d22af8fb4f10f0ee830941

  • SHA256

    8a8ec6bb5e28a1314eab7ff5c9347bf7ddc567d6cd18f68d26abc364cea0ab8f

  • SHA512

    80d26b25643146f2c1f571757301e244ec9a0cd92e59376814bfc490e2b5704edc58cd14489fbe05e4e4e9235de3e14255c2b39bf12d8e87108a0899c314763c

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.ilclaw.com.ph
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    P@ssw0rd

Signatures

  • AgentTesla

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

  • AgentTesla Payload 1 IoCs
  • 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
  • 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 3 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\Business Proposal AECCFC Scope #20200511.exe
    "C:\Users\Admin\AppData\Local\Temp\Business Proposal AECCFC Scope #20200511.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4800
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jUzYqTIu" /XML "C:\Users\Admin\AppData\Local\Temp\tmp513D.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4244
    • C:\Users\Admin\AppData\Local\Temp\Business Proposal AECCFC Scope #20200511.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • outlook_office_path
      • outlook_win_path
      PID:4840
      • C:\Windows\SysWOW64\netsh.exe
        "netsh" wlan show profile
        3⤵
          PID:1664

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp513D.tmp

      Filesize

      1KB

      MD5

      765de5017a2b60708f5e126f1453c915

      SHA1

      88915be6b31e8ac81db10393cda539ea24e7f89b

      SHA256

      c7b76c161b4b57b1a66e95ffe879b8ac0d14f5e63b37b182923276d4a5758c26

      SHA512

      7dca7e3feb309d3a61b795b72e30d5e1868c94f1e0e496b8dc838a6daa573a1f25ca23ea2b8f6242686c0609748318b99d8897fe56358a9c9947d39c7bf981e6

    • memory/1664-141-0x0000000000000000-mapping.dmp

    • memory/4244-135-0x0000000000000000-mapping.dmp

    • memory/4800-130-0x00000000002A0000-0x0000000000350000-memory.dmp

      Filesize

      704KB

    • memory/4800-131-0x00000000053A0000-0x0000000005944000-memory.dmp

      Filesize

      5.6MB

    • memory/4800-132-0x0000000004D30000-0x0000000004DC2000-memory.dmp

      Filesize

      584KB

    • memory/4800-133-0x0000000004CE0000-0x0000000004CEA000-memory.dmp

      Filesize

      40KB

    • memory/4800-134-0x0000000008690000-0x000000000872C000-memory.dmp

      Filesize

      624KB

    • memory/4840-137-0x0000000000000000-mapping.dmp

    • memory/4840-138-0x0000000000400000-0x0000000000452000-memory.dmp

      Filesize

      328KB

    • memory/4840-139-0x0000000005810000-0x0000000005876000-memory.dmp

      Filesize

      408KB

    • memory/4840-140-0x0000000006420000-0x0000000006470000-memory.dmp

      Filesize

      320KB