Resubmissions

11-01-2024 13:59

240111-ractvahbep 10

09-01-2024 17:33

240109-v46wkagba2 10

Analysis

  • max time kernel
    9s
  • max time network
    24s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    11-01-2024 13:59

Errors

Reason
Machine shutdown

General

  • Target

    c460fc0d4fdaf5c68623e18de106f1c3601d7bd6ba80ddad86c10fd6ea123850.exe

  • Size

    87KB

  • MD5

    d6d956267a268c9dcf48445629d2803e

  • SHA1

    cc0feae505dad9c140dd21d1b40b518d8e61b3a4

  • SHA256

    c460fc0d4fdaf5c68623e18de106f1c3601d7bd6ba80ddad86c10fd6ea123850

  • SHA512

    e0791f6eb3116d0590be3af3713c94f787f7ced8e904d4bb8fc0d1341f332053414cb1e9095ae2de041b9e6d6d55cf773bf45ebeb74f27bb95c11a3cc364abee

  • SSDEEP

    1536:OXMLuZQG3KJ3QaIH9shR4fZcvr4C9u3MTIdD9mtthd9JovrgmqhtvM4CoLT6QPbc:gMLuZraJ3a0ehcvv9sM+9mtthd0gmWkr

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
  • Modifies boot configuration data using bcdedit 1 TTPs 1 IoCs
  • Windows security modification 2 TTPs 1 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c460fc0d4fdaf5c68623e18de106f1c3601d7bd6ba80ddad86c10fd6ea123850.exe
    "C:\Users\Admin\AppData\Local\Temp\c460fc0d4fdaf5c68623e18de106f1c3601d7bd6ba80ddad86c10fd6ea123850.exe"
    1⤵
    • Windows security modification
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:632
    • C:\Windows\system32\reg.exe
      "reg.exe" delete HKLM\System\CurrentControlSet\Control\SafeBoot\Minimal\WinDefend /f
      2⤵
      • Modifies registry key
      PID:856
    • C:\Windows\system32\net.exe
      "net.exe" user Admin ""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2864
      • C:\Windows\system32\net1.exe
        C:\Windows\system32\net1 user Admin ""
        3⤵
          PID:2140
      • 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\c460fc0d4fdaf5c68623e18de106f1c3601d7bd6ba80ddad86c10fd6ea123850.exe","C:\Windows\system32\userinit.exe" /f
        2⤵
        • Modifies WinLogon for persistence
        PID:2820
      • C:\Windows\system32\shutdown.exe
        "shutdown.exe" /r /t 0
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2728
      • C:\Windows\system32\bcdedit.exe
        "bcdedit.exe" /set {default} safeboot network
        2⤵
        • Modifies boot configuration data using bcdedit
        PID:2440
    • C:\Windows\system32\LogonUI.exe
      "LogonUI.exe" /flags:0x0
      1⤵
        PID:2616
      • C:\Windows\system32\LogonUI.exe
        "LogonUI.exe" /flags:0x1
        1⤵
          PID:2932

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/632-0-0x00000000010D0000-0x00000000010EC000-memory.dmp

          Filesize

          112KB

        • memory/632-1-0x000007FEF5F70000-0x000007FEF695C000-memory.dmp

          Filesize

          9.9MB

        • memory/632-2-0x000000001AF10000-0x000000001AF90000-memory.dmp

          Filesize

          512KB

        • memory/632-4-0x000007FEF5F70000-0x000007FEF695C000-memory.dmp

          Filesize

          9.9MB

        • memory/2616-3-0x00000000029C0000-0x00000000029C1000-memory.dmp

          Filesize

          4KB

        • memory/2932-5-0x00000000027E0000-0x00000000027E1000-memory.dmp

          Filesize

          4KB