Analysis

  • max time kernel
    94s
  • max time network
    65s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2022 14:31

General

  • Target

    SecuriteInfo.com.MSIL.GenKryptik.FYGA.tr.13096.exe

  • Size

    985KB

  • MD5

    7c997b40e724596134150d838380d8fc

  • SHA1

    4f352918c60a77f25b74d3bb48df397e7ad54a66

  • SHA256

    79fe46d2be00c4f28ed865d1fec837d8d34d16fdaf74b901d05018dc03e67686

  • SHA512

    dce5e073f67d554b4265dfa143074b1dc2887d3629d1800ce329871d593b709eb85f9a596097af3f8dd1f52ffdbecd15a86666ee8d8adc7654854c386a842a80

  • SSDEEP

    24576:1+gG7tqzU376CskFg/IyXt9hLJYdNmpmIkrgD968WlG6ZPnEmd+Qu:E7hekoXQmpmIkrgD96lTNnH8Qu

Malware Config

Extracted

Family

agenttesla

Credentials

Signatures

  • AgentTesla

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

  • 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
  • Looks up external IP address via web service 2 IoCs

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

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.MSIL.GenKryptik.FYGA.tr.13096.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.MSIL.GenKryptik.FYGA.tr.13096.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:240
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gDqcOkt" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8019.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1324
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.MSIL.GenKryptik.FYGA.tr.13096.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:908

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp8019.tmp
    Filesize

    1KB

    MD5

    632ece84f64ddf256e06ba4ed46136ea

    SHA1

    ca35cd7964b2a7a9c866202ef16928b2f651b48e

    SHA256

    091a4397616425009ed7d3743b0f11d913e26ec639bf04c11e4774471cfcd73d

    SHA512

    e71204be47fbaa3d05974a3dd58b0adbb3f892354e4e50f9c0b5ef418539166d01294bd8bc00d544f37b82df5bb8cc2d4cca758baa989ccf0a14c867298b4a31

  • memory/240-57-0x0000000005760000-0x0000000005822000-memory.dmp
    Filesize

    776KB

  • memory/240-55-0x0000000075DA1000-0x0000000075DA3000-memory.dmp
    Filesize

    8KB

  • memory/240-54-0x0000000000B80000-0x0000000000C7C000-memory.dmp
    Filesize

    1008KB

  • memory/240-58-0x0000000005490000-0x000000000550A000-memory.dmp
    Filesize

    488KB

  • memory/240-56-0x00000000005F0000-0x0000000000602000-memory.dmp
    Filesize

    72KB

  • memory/908-66-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/908-61-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/908-62-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/908-64-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/908-65-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/908-67-0x0000000000437B9E-mapping.dmp
  • memory/908-71-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/908-69-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/1324-59-0x0000000000000000-mapping.dmp