Analysis

  • max time kernel
    20s
  • max time network
    25s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-03-2024 01:43

General

  • Target

    a.exe

  • Size

    143KB

  • MD5

    74f22ec8451a5d788ee312e2b637519c

  • SHA1

    a7bd09f6f3d7f9b3ec33b5d4c2787223459d1fc0

  • SHA256

    48614dc3fd49968db9c35b840a6609f397f2f1813daa7c56b659036edf82f2e2

  • SHA512

    5b356e4811c58bcede2c3a5a0614e40049ef2a68c63c76fa78f612441d1ca9e1200f7a0544ffbca66ab4e0668fd0ec196bf0cdbff60ff7097c5f476b1675492b

  • SSDEEP

    3072:e0cwsSCbN9bHfhFuZHvE2Rf2p65ddPPHziJsEabvx0hQWf5CrAZuCHd:eEs9Crziy7bpq

Malware Config

Extracted

Family

toxiceye

C2

https://api.telegram.org/bot7040511851:AAEjBKSxADGWlNtLxaKpotGtf53NUQ1UgAo/sendMessage?chat_id=6226815698

Signatures

  • Contains code to disable Windows Defender 3 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • ToxicEye

    ToxicEye is a trojan written in C#.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\a.exe
    "C:\Users\Admin\AppData\Local\Temp\a.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4856
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\CyberEye\rat.exe"
      2⤵
      • Creates scheduled task(s)
      PID:4808
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp7E67.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmp7E67.tmp.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2568
      • C:\Windows\system32\tasklist.exe
        Tasklist /fi "PID eq 4856"
        3⤵
        • Enumerates processes with tasklist
        • Suspicious use of AdjustPrivilegeToken
        PID:4944
      • C:\Windows\system32\find.exe
        find ":"
        3⤵
          PID:3076
        • C:\Windows\system32\timeout.exe
          Timeout /T 1 /Nobreak
          3⤵
          • Delays execution with timeout.exe
          PID:3252
        • C:\Users\CyberEye\rat.exe
          "rat.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3888
          • C:\Windows\System32\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\CyberEye\rat.exe"
            4⤵
            • Creates scheduled task(s)
            PID:4820

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp7E67.tmp.bat

      Filesize

      178B

      MD5

      38bc7f8bffd04c37353824eb9a310dd8

      SHA1

      2d69a7acc42b57f7e227cb89def421b45b778bc5

      SHA256

      890f14fce3ce9b493420c9f582349f48b06d1989cee179c227d577ef7a37599c

      SHA512

      78a4ec1d11693e186191f36ab932f31d045ffe7be199625b9c1d4da087c5349be648438f23e6198a950ffcca0d3cd55e97c94d445078e4b9a26a7206486de145

    • C:\Users\CyberEye\rat.exe

      Filesize

      143KB

      MD5

      74f22ec8451a5d788ee312e2b637519c

      SHA1

      a7bd09f6f3d7f9b3ec33b5d4c2787223459d1fc0

      SHA256

      48614dc3fd49968db9c35b840a6609f397f2f1813daa7c56b659036edf82f2e2

      SHA512

      5b356e4811c58bcede2c3a5a0614e40049ef2a68c63c76fa78f612441d1ca9e1200f7a0544ffbca66ab4e0668fd0ec196bf0cdbff60ff7097c5f476b1675492b

    • memory/3888-16-0x00000267F5380000-0x00000267F5392000-memory.dmp

      Filesize

      72KB

    • memory/3888-11-0x00007FFB73130000-0x00007FFB73BF1000-memory.dmp

      Filesize

      10.8MB

    • memory/3888-12-0x00000267F4CF0000-0x00000267F4D00000-memory.dmp

      Filesize

      64KB

    • memory/3888-14-0x00000267F51D0000-0x00000267F51DA000-memory.dmp

      Filesize

      40KB

    • memory/3888-17-0x00000267F4CF0000-0x00000267F4D00000-memory.dmp

      Filesize

      64KB

    • memory/3888-20-0x00000267F4CF0000-0x00000267F4D00000-memory.dmp

      Filesize

      64KB

    • memory/3888-45-0x00007FFB73130000-0x00007FFB73BF1000-memory.dmp

      Filesize

      10.8MB

    • memory/4856-6-0x00007FFB73130000-0x00007FFB73BF1000-memory.dmp

      Filesize

      10.8MB

    • memory/4856-1-0x00007FFB73130000-0x00007FFB73BF1000-memory.dmp

      Filesize

      10.8MB

    • memory/4856-2-0x0000020974C80000-0x0000020974C90000-memory.dmp

      Filesize

      64KB

    • memory/4856-0-0x0000020972800000-0x000002097282A000-memory.dmp

      Filesize

      168KB