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Resubmissions

12/03/2025, 21:32

250312-1dmynatxey 10

11/03/2025, 16:10

250311-tmgdxaxnx4 10

06/03/2025, 02:30

250306-cze8yav1az 10

Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    06/03/2025, 02:30

General

  • Target

    23d6f9a120790d441377488f28c15f7ffc4df84c3fb5d05ce42f0bae5d75731e.exe

  • Size

    324KB

  • MD5

    638264dabfa294ec7b31dfb89a85edbc

  • SHA1

    2029e54083f1900349c89cc49a72f914c0db943f

  • SHA256

    23d6f9a120790d441377488f28c15f7ffc4df84c3fb5d05ce42f0bae5d75731e

  • SHA512

    2bc06a4789bcdecc338a53410ffdbf4c4f7914884db9a2ab05940296824aaae5c94a33cce61f82c32d83164efbec9c53ffc4a2ba76e27f6c417d78a9a15e3d0f

  • SSDEEP

    6144:HSP8tg4knZXvKh8528ZE/PqOl4LF8SbbAkIlerfDUSwR8t:yPC5jw28ZEl4LF1bUk86bmWt

Malware Config

Signatures

  • Modifies Windows Firewall 2 TTPs 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 39 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\23d6f9a120790d441377488f28c15f7ffc4df84c3fb5d05ce42f0bae5d75731e.exe
    "C:\Users\Admin\AppData\Local\Temp\23d6f9a120790d441377488f28c15f7ffc4df84c3fb5d05ce42f0bae5d75731e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2608
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2168
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe" "AppLaunch.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2900
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe" "AppLaunch.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:2676
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionExtension exe,vbs,bat,hta,lnk,dll,ps1;exit
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2068
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Local\Temp\crox\crox.exe'" /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:884
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Local\Temp\crox\crox.exe'" /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2088
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\23d6f9a120790d441377488f28c15f7ffc4df84c3fb5d05ce42f0bae5d75731e.exe" "C:\Users\Admin\AppData\Local\Temp\crox\crox.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2228
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2668
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {D70A28ED-C132-414A-8860-EF84B2D0499F} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2468
    • C:\Users\Admin\AppData\Local\Temp\crox\crox.exe
      C:\Users\Admin\AppData\Local\Temp\crox\crox.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:788
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2324
      • C:\Users\Admin\AppData\Local\Temp\nitropdf.enterprise.pro.x64.13.xx-patch.exe
        "C:\Users\Admin\AppData\Local\Temp\nitropdf.enterprise.pro.x64.13.xx-patch.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2592

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\crox\crox.exe

    Filesize

    324KB

    MD5

    638264dabfa294ec7b31dfb89a85edbc

    SHA1

    2029e54083f1900349c89cc49a72f914c0db943f

    SHA256

    23d6f9a120790d441377488f28c15f7ffc4df84c3fb5d05ce42f0bae5d75731e

    SHA512

    2bc06a4789bcdecc338a53410ffdbf4c4f7914884db9a2ab05940296824aaae5c94a33cce61f82c32d83164efbec9c53ffc4a2ba76e27f6c417d78a9a15e3d0f

  • \Users\Admin\AppData\Local\Temp\nitropdf.enterprise.pro.x64.13.xx-patch.exe

    Filesize

    240KB

    MD5

    646260e1f316dd6e518d4c7a9ac6b589

    SHA1

    33eb1212fd842078b5b65d8720672582d8acb7ca

    SHA256

    8b0a871839c2e9714684cdb00cd18484780e29ee762f004d300c1fe65bb08628

    SHA512

    fc8e21267cc9141c86d490557de28e1afaebfb8d1519aca377160543b1dd825cd116d7b5bcb2e3b21a15b32f7f45505cf3c47ae6b29e4dd39c137ebaa694acad

  • memory/788-24-0x00000000010F0000-0x0000000001148000-memory.dmp

    Filesize

    352KB

  • memory/2168-6-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2168-5-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2168-4-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2168-3-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2168-8-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2168-10-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2168-12-0x0000000000400000-0x000000000040C000-memory.dmp

    Filesize

    48KB

  • memory/2168-13-0x0000000074470000-0x0000000074B5E000-memory.dmp

    Filesize

    6.9MB

  • memory/2168-7-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

    Filesize

    4KB

  • memory/2168-18-0x0000000074470000-0x0000000074B5E000-memory.dmp

    Filesize

    6.9MB

  • memory/2324-33-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

    Filesize

    4KB

  • memory/2592-43-0x000000006F6D0000-0x000000006F723000-memory.dmp

    Filesize

    332KB

  • memory/2608-14-0x000000007447E000-0x000000007447F000-memory.dmp

    Filesize

    4KB

  • memory/2608-2-0x0000000074470000-0x0000000074B5E000-memory.dmp

    Filesize

    6.9MB

  • memory/2608-15-0x0000000074470000-0x0000000074B5E000-memory.dmp

    Filesize

    6.9MB

  • memory/2608-1-0x00000000000F0000-0x0000000000148000-memory.dmp

    Filesize

    352KB

  • memory/2608-0-0x000000007447E000-0x000000007447F000-memory.dmp

    Filesize

    4KB