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Analysis

  • max time kernel
    135s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/04/2023, 13:44

General

  • Target

    4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe

  • Size

    646KB

  • MD5

    311102ca55b09ee930cfceca5e4c06da

  • SHA1

    8fbe0182c4ae39acb97a23f16b5d758b4183ad4b

  • SHA256

    4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d

  • SHA512

    0e812ff97fb68c2d635a681d12d21b997e81bb9a442bf1c375d7a459c1785bb355cb62227bb15672cd7146437d8f5274da8e348170c5570d247def339b8b73ee

  • SSDEEP

    12288:6GvZepMqJ07C6YHyrn9baFbUBXrVAlLSjujRJK/sJ2:6IgpM+F6YHyDYFYUNSVA2

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    eJkG%KP9

Signatures

  • 404 Keylogger

    Information stealer and keylogger first seen in 2019.

  • 404 Keylogger Main Executable 5 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.

  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe
    "C:\Users\Admin\AppData\Local\Temp\4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4320
    • C:\Users\Admin\AppData\Local\Temp\4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe
      "C:\Users\Admin\AppData\Local\Temp\4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1648
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1648 -s 2224
        3⤵
        • Program crash
        PID:4660
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1648 -ip 1648
    1⤵
      PID:3876

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1648-140-0x0000000000400000-0x0000000000450000-memory.dmp

      Filesize

      320KB

    • memory/1648-154-0x0000000005CB0000-0x0000000005D16000-memory.dmp

      Filesize

      408KB

    • memory/1648-136-0x0000000000400000-0x0000000000450000-memory.dmp

      Filesize

      320KB

    • memory/1648-137-0x0000000000400000-0x0000000000450000-memory.dmp

      Filesize

      320KB

    • memory/1648-138-0x0000000000900000-0x0000000000922000-memory.dmp

      Filesize

      136KB

    • memory/1648-139-0x0000000000900000-0x0000000000922000-memory.dmp

      Filesize

      136KB

    • memory/1648-159-0x0000000000450000-0x0000000000519000-memory.dmp

      Filesize

      804KB

    • memory/1648-152-0x0000000004A90000-0x0000000004B2C000-memory.dmp

      Filesize

      624KB

    • memory/1648-133-0x0000000000400000-0x0000000000450000-memory.dmp

      Filesize

      320KB

    • memory/1648-153-0x0000000004C00000-0x0000000004C10000-memory.dmp

      Filesize

      64KB

    • memory/1648-151-0x0000000004C40000-0x00000000051E4000-memory.dmp

      Filesize

      5.6MB

    • memory/1648-155-0x00000000061A0000-0x0000000006362000-memory.dmp

      Filesize

      1.8MB

    • memory/1648-157-0x0000000000400000-0x0000000000450000-memory.dmp

      Filesize

      320KB

    • memory/1648-158-0x0000000006590000-0x0000000006622000-memory.dmp

      Filesize

      584KB

    • memory/4320-135-0x0000000000400000-0x00000000004A8000-memory.dmp

      Filesize

      672KB