Overview

overview

10

Static

static

10

7ea4ed64bd...b2.exe

windows7_x64

10

7ea4ed64bd...b2.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    46s
  • max time network
    56s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    07-06-2022 18:29

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General

  • Target

    7ea4ed64bd51eb40865c5ede7da7cf980a464db8087d95fec5a83885352c88b2.exe

  • Size

    82KB

  • MD5

    d1b3c544cb322538e43938174b05eee2

  • SHA1

    3f8ca284369b714e80838d2d77c2014d1fbe9442

  • SHA256

    7ea4ed64bd51eb40865c5ede7da7cf980a464db8087d95fec5a83885352c88b2

  • SHA512

    49f28ce81ba7736eca1a881df9a69fac82022b620cc87d56f2597fc8ec6ca7f53485d70d6ccd612b1a1c16c0d3e5cf958ba317101d95091cb347348cdcf32c2a

Score
10/10
evasionpersistenceransomware

Malware Config

Signatures

  • Contains code to disable Windows Defender 1 IoCs

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Modifies boot configuration data using bcdedit 1 TTPs 1 IoCs
    ransomwareevasion
  • Modifies registry key 1 TTPs 1 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7ea4ed64bd51eb40865c5ede7da7cf980a464db8087d95fec5a83885352c88b2.exe
    "C:\Users\Admin\AppData\Local\Temp\7ea4ed64bd51eb40865c5ede7da7cf980a464db8087d95fec5a83885352c88b2.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1880
    • C:\Windows\system32\reg.exe
      "reg.exe" delete HKLM\System\CurrentControlSet\Control\SafeBoot\Minimal\WinDefend /f
      2⤵
      • Modifies registry key
      PID:2004
    • C:\Windows\system32\bcdedit.exe
      "bcdedit.exe" /set {default} safeboot network
      2⤵
      • Modifies boot configuration data using bcdedit
      PID:1392
    • C:\Windows\system32\reg.exe
      "reg.exe" add "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v Userinit /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\7ea4ed64bd51eb40865c5ede7da7cf980a464db8087d95fec5a83885352c88b2.exe","C:\Windows\system32\userinit.exe" /f
      2⤵
      • Modifies WinLogon for persistence
      PID:1836
    • C:\Windows\system32\net.exe
      "net.exe" user Admin ""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1108
      • C:\Windows\system32\net1.exe
        C:\Windows\system32\net1 user Admin ""
        3⤵
          PID:892
      • C:\Windows\system32\shutdown.exe
        "shutdown.exe" /r /t 0
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:848
    • C:\Windows\system32\LogonUI.exe
      "LogonUI.exe" /flags:0x0
      1⤵
        PID:772
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x564
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:776
      • C:\Windows\system32\LogonUI.exe
        "LogonUI.exe" /flags:0x1
        1⤵
          PID:1512

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • memory/772-61-0x000007FEFB8B1000-0x000007FEFB8B3000-memory.dmp

          Filesize

          8KB

          Download

        • memory/848-59-0x0000000000000000-mapping.dmp

          Download

        • memory/892-60-0x0000000000000000-mapping.dmp

          Download

        • memory/1108-58-0x0000000000000000-mapping.dmp

          Download

        • memory/1392-56-0x0000000000000000-mapping.dmp

          Download

        • memory/1836-57-0x0000000000000000-mapping.dmp

          Download

        • memory/1880-54-0x0000000001260000-0x000000000127A000-memory.dmp

          Filesize

          104KB

          Download

        • memory/2004-55-0x0000000000000000-mapping.dmp

          Download