Analysis

  • max time kernel
    150s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    26-09-2024 02:45

General

  • Target

    f76379bef1f2feef09b826584ba04abb_JaffaCakes118.exe

  • Size

    1.6MB

  • MD5

    f76379bef1f2feef09b826584ba04abb

  • SHA1

    dd9bd8f293a94c30c186732bad507facdd0e7a55

  • SHA256

    e4ec15a1adf9b753e880d5675c798334c7ded36a2cadf8eccec5ef983999ef6b

  • SHA512

    520efc62184f1e2d1d14ef018f08dd69228d4d9146d2f3e24a9dcfe51b81ce837266e0254fd1cad696841a468a4cfb50f9836356b1ae3777cee060be42d870b7

  • SSDEEP

    24576:ru6J33O0c+JY5UZ+XC0kGso6FaQwvpzfZwbkMYlzcHGSsnvP5hU7cFFV7vTYDWY:Fu0c++OCvkGs9FaQ+h6ZiqsnvP3isHY

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    mail.multichemgroup.net
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    xL55IOx}t97U

Signatures

  • AgentTesla

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

  • AgentTesla payload 3 IoCs
  • Drops startup file 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • 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 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f76379bef1f2feef09b826584ba04abb_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\f76379bef1f2feef09b826584ba04abb_JaffaCakes118.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2168
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      "C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v2.0.50727\\\\RegAsm.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:320

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/320-9-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/320-7-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/320-5-0x0000000000400000-0x000000000044C000-memory.dmp

    Filesize

    304KB

  • memory/320-10-0x0000000074292000-0x0000000074294000-memory.dmp

    Filesize

    8KB

  • memory/320-11-0x0000000074292000-0x0000000074294000-memory.dmp

    Filesize

    8KB

  • memory/2168-3-0x0000000001140000-0x00000000011CD000-memory.dmp

    Filesize

    564KB

  • memory/2168-4-0x0000000003810000-0x000000000389D000-memory.dmp

    Filesize

    564KB