Overview

overview

5

Static

static

1

winrar-x64-723.exe

windows10-2004-x64

5

winrar-x64-723.exe

windows11-ltsc_2024-x64

5

Analysis

  • max time kernel
    150s
  • max time network
    141s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    01/11/2026, 22:29

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General

  • Target
    winrar-x64-723.exe
  • Size 3.7MB
  • Sample261101-2ejhasfw2k
  • SHA256 f435b24d4c2c5342c4f7c0143ef358f0f425b7b8a0972dd34d9dcf94789e9c4d
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
5/10
discoverypersistenceprivilege_escalation

Malware Config

Signatures

  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    persistenceprivilege_escalation
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Drops file in Program Files directory 60 IoCs
  • Executes dropped EXE 19 IoCs
  • Modifies system executable filetype association 2 TTPs 4 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

    discovery
  • Modifies registry class 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 14 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\winrar-x64-723.exe
    "C:\Users\Admin\AppData\Local\Temp\winrar-x64-723.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2856
    • C:\Program Files\WinRAR\uninstall.exe
      "C:\Program Files\WinRAR\uninstall.exe" /setup
      2⤵
      • Drops file in Program Files directory
      • Executes dropped EXE
      • Modifies system executable filetype association
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:1996
      • C:\Program Files\WinRAR\RarExtInstaller.exe
        "C:\Program Files\WinRAR\RarExtInstaller.exe" -install
        3⤵
        • Executes dropped EXE
        • Reads the TCP/IP host and domain name from the registry
        PID:240
  • C:\Program Files\WinRAR\RarExtInstaller.exe
    "C:\Program Files\WinRAR\RarExtInstaller.exe" /install /local
    1⤵
    • Executes dropped EXE
    PID:4576
  • C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
    1⤵
      PID:4268
    • C:\Program Files\WinRAR\WinRAR.exe
      "C:\Program Files\WinRAR\WinRAR.exe"
      1⤵
      • Executes dropped EXE
      • Modifies registry class
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of WriteProcessMemory
      PID:716
      • C:\Program Files\WinRAR\RarExtInstaller.exe
        "C:\Program Files\WinRAR\RarExtInstaller.exe" -install
        2⤵
        • Executes dropped EXE
        PID:3876
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
      1⤵
        PID:2188
      • C:\Program Files\WinRAR\WinRAR.exe
        "C:\Program Files\WinRAR\WinRAR.exe"
        1⤵
        • Executes dropped EXE
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        PID:4216
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
        1⤵
          PID:3476
        • C:\Program Files\WinRAR\WinRAR.exe
          "C:\Program Files\WinRAR\WinRAR.exe"
          1⤵
          • Executes dropped EXE
          • Modifies registry class
          • Suspicious behavior: GetForegroundWindowSpam
          PID:5032
        • C:\Windows\system32\NOTEPAD.EXE
          "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
          1⤵
            PID:5384
          • C:\Program Files\WinRAR\WinRAR.exe
            "C:\Program Files\WinRAR\WinRAR.exe"
            1⤵
            • Executes dropped EXE
            • Suspicious behavior: GetForegroundWindowSpam
            PID:5424
          • C:\Windows\system32\NOTEPAD.EXE
            "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
            1⤵
              PID:2288
            • C:\Program Files\WinRAR\WinRAR.exe
              "C:\Program Files\WinRAR\WinRAR.exe"
              1⤵
              • Executes dropped EXE
              • Modifies registry class
              • Suspicious behavior: GetForegroundWindowSpam
              PID:3116
            • C:\Windows\system32\NOTEPAD.EXE
              "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
              1⤵
                PID:1472
              • C:\Program Files\WinRAR\WinRAR.exe
                "C:\Program Files\WinRAR\WinRAR.exe"
                1⤵
                • Executes dropped EXE
                • Modifies registry class
                • Suspicious behavior: GetForegroundWindowSpam
                PID:4396
              • C:\Windows\system32\NOTEPAD.EXE
                "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                1⤵
                  PID:4968
                • C:\Program Files\WinRAR\WinRAR.exe
                  "C:\Program Files\WinRAR\WinRAR.exe"
                  1⤵
                  • Executes dropped EXE
                  • Modifies registry class
                  PID:2036
                • C:\Windows\system32\NOTEPAD.EXE
                  "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                  1⤵
                    PID:4128
                  • C:\Program Files\WinRAR\WinRAR.exe
                    "C:\Program Files\WinRAR\WinRAR.exe"
                    1⤵
                    • Executes dropped EXE
                    • Modifies registry class
                    • Suspicious behavior: GetForegroundWindowSpam
                    PID:2076
                  • C:\Windows\system32\NOTEPAD.EXE
                    "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                    1⤵
                      PID:5360
                    • C:\Program Files\WinRAR\WinRAR.exe
                      "C:\Program Files\WinRAR\WinRAR.exe"
                      1⤵
                      • Executes dropped EXE
                      • Modifies registry class
                      • Suspicious behavior: GetForegroundWindowSpam
                      PID:2988
                    • C:\Windows\system32\NOTEPAD.EXE
                      "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                      1⤵
                        PID:4548
                      • C:\Program Files\WinRAR\WinRAR.exe
                        "C:\Program Files\WinRAR\WinRAR.exe"
                        1⤵
                        • Executes dropped EXE
                        • Modifies registry class
                        • Suspicious behavior: GetForegroundWindowSpam
                        PID:5996
                      • C:\Windows\system32\NOTEPAD.EXE
                        "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                        1⤵
                          PID:5908
                        • C:\Program Files\WinRAR\WinRAR.exe
                          "C:\Program Files\WinRAR\WinRAR.exe"
                          1⤵
                          • Executes dropped EXE
                          • Modifies registry class
                          • Suspicious behavior: GetForegroundWindowSpam
                          PID:836
                        • C:\Windows\system32\NOTEPAD.EXE
                          "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                          1⤵
                            PID:1552
                          • C:\Program Files\WinRAR\WinRAR.exe
                            "C:\Program Files\WinRAR\WinRAR.exe"
                            1⤵
                            • Executes dropped EXE
                            • Modifies registry class
                            • Suspicious behavior: GetForegroundWindowSpam
                            PID:3876
                          • C:\Windows\system32\NOTEPAD.EXE
                            "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                            1⤵
                              PID:2356
                            • C:\Program Files\WinRAR\WinRAR.exe
                              "C:\Program Files\WinRAR\WinRAR.exe"
                              1⤵
                              • Executes dropped EXE
                              • Suspicious behavior: GetForegroundWindowSpam
                              PID:1496
                            • C:\Windows\system32\NOTEPAD.EXE
                              "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                              1⤵
                                PID:632
                              • C:\Program Files\WinRAR\WinRAR.exe
                                "C:\Program Files\WinRAR\WinRAR.exe"
                                1⤵
                                • Executes dropped EXE
                                • Modifies registry class
                                • Suspicious behavior: GetForegroundWindowSpam
                                PID:5484
                              • C:\Windows\system32\NOTEPAD.EXE
                                "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                                1⤵
                                  PID:6096
                                • C:\Program Files\WinRAR\WinRAR.exe
                                  "C:\Program Files\WinRAR\WinRAR.exe"
                                  1⤵
                                  • Executes dropped EXE
                                  • Modifies registry class
                                  • Suspicious behavior: GetForegroundWindowSpam
                                  PID:5512

                                Network

                                      MITRE ATT&CK Enterprise v16

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                                      Downloads

                                      Rar.exe
                                      • Path C:\Program Files\WinRAR\Rar.exe
                                      • Size 826KB
                                      • SHA256 1639bfccc19b6fdd9becffb154edca06f07d1f337cc61933273f5b30dfb91882
                                      • MD5 SHA1 SHA512 SSDEEP TLSH
                                      Submit Download

                                      Rar.txt
                                      • Path C:\Program Files\WinRAR\Rar.txt
                                      • Size 110KB
                                      • SHA256 626b437acc8c23be798b1f3233f5636e64245941fb931f322cd9e65cb8c56a1f
                                      • MD5 SHA1 SHA512 SSDEEP TLSH
                                      Submit Download

                                      RarExtInstaller.exe
                                      • Path C:\Program Files\WinRAR\RarExtInstaller.exe
                                      • Size 229KB
                                      • SHA256 091f077e4a8ffdca19430e9775b97d3b448e0c8ffdda52fb93b98268d38356f5
                                      • MD5 SHA1 SHA512 SSDEEP TLSH
                                      Submit Download

                                      RarExtPackage.msix
                                      • Path C:\Program Files\WinRAR\RarExtPackage.msix
                                      • Size 23KB
                                      • SHA256 9bd99b011fc9053589e97a4845ba2951d334fa6412190cd0d5f78d6a3e4d3d3d
                                      • MD5 SHA1 SHA512 SSDEEP TLSH
                                      Submit Download

                                      UnRAR.exe
                                      • Path C:\Program Files\WinRAR\UnRAR.exe
                                      • Size 558KB
                                      • SHA256 806b42a2ae54eb8688841500aa70b3a3e4fcbe99059e612086cf9ccdc231b5ea
                                      • MD5 SHA1 SHA512 SSDEEP TLSH
                                      Submit Download

                                      Uninstall.exe
                                      • Path C:\Program Files\WinRAR\Uninstall.exe
                                      • Size 413KB
                                      • SHA256 c893bab6e0159ad6a3baea054f7341dd543ac0ca446671ce07aa93e97b540dc2
                                      • MD5 SHA1 SHA512 SSDEEP TLSH
                                      Submit Download

                                      WhatsNew.txt
                                      • Path C:\Program Files\WinRAR\WhatsNew.txt
                                      • Size 64KB
                                      • SHA256 aadee800c40e3437867f644057dee828e67fcc6da65004b0a981c000a4e0a58d
                                      • MD5 SHA1 SHA512 SSDEEP TLSH
                                      Submit Download

                                      WinRAR.chm
                                      • Path C:\Program Files\WinRAR\WinRAR.chm
                                      • Size 320KB
                                      • SHA256 cb5edb04ac5e879243dae4f1f6d8253b8653dc6c57473bd0b3f3d23fd1861f61
                                      • MD5 SHA1 SHA512 SSDEEP TLSH
                                      Submit Download

                                      WinRAR.exe
                                      • Path C:\Program Files\WinRAR\WinRAR.exe
                                      • Size 3.2MB
                                      • SHA256 ab727aec2418a942a1adf5295efb9c676eeba39d16f7c2443e3f873fe2dfca14
                                      • MD5 SHA1 SHA512 SSDEEP TLSH
                                      Submit Download

                                      8EC9B1D0ABBD7F98B401D425828828CE_D96A4C3B75E862E237A6B89F58F74354
                                      • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_D96A4C3B75E862E237A6B89F58F74354
                                      • Size 727B
                                      • SHA256 8eeda70948f878c6b0a3285163d07283740c434f0c8a713b2b02c0ac4466ec01
                                      • MD5 SHA1 SHA512 TLSH
                                      Submit Download

                                      C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
                                      • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
                                      • Size 727B
                                      • SHA256 5ed6e3278d522b55a451b979c6976812b6d4c8fe921b5fed6f8ebb57d5981a71
                                      • MD5 SHA1 SHA512 TLSH
                                      Submit Download

                                      8EC9B1D0ABBD7F98B401D425828828CE_D96A4C3B75E862E237A6B89F58F74354
                                      • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_D96A4C3B75E862E237A6B89F58F74354
                                      • Size 404B
                                      • SHA256 c3da0b2fadfe9a154e2ccf2765e2a170e850d3d8ddef8a0bb5864b7aa02c262e
                                      • MD5 SHA1 SHA512 TLSH
                                      Submit Download

                                      C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
                                      • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
                                      • Size 412B
                                      • SHA256 f4c7cf508c21cc53e1eca4275aca925073132a08660a7833920a9997e3c3d3db
                                      • MD5 SHA1 SHA512 TLSH
                                      Submit Download

                                      version.dat
                                      • Path C:\Users\Admin\AppData\Roaming\WinRAR\version.dat
                                      • Size 12B
                                      • SHA256 70b62d2bcb126a532268e885be4c39586341aef2013486bf80a8749bb76f087b
                                      • MD5 SHA1 SHA512
                                      Submit Download