Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    12/07/2026, 13:43

General

  • Target
    winrar-x64-720.exe
  • Size 3.6MB
  • Sample260712-q1geaaaz2n
  • SHA256 cfca124c2141b4171cebad48cc286751910b408aec69767db2bc3af38f277a06
  • MD5 SHA1 SHA512 SSDEEP TLSH

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.

  • Checks installed software on the system 1 TTPs

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

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

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

  • Modifies registry class 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 13 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\winrar-x64-720.exe
    "C:\Users\Admin\AppData\Local\Temp\winrar-x64-720.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2400
    • 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:4828
      • C:\Program Files\WinRAR\RarExtInstaller.exe
        "C:\Program Files\WinRAR\RarExtInstaller.exe" -install
        3⤵
        • Executes dropped EXE
        PID:5808
  • C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
    1⤵
      PID:5572
    • 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:5788
      • C:\Program Files\WinRAR\RarExtInstaller.exe
        "C:\Program Files\WinRAR\RarExtInstaller.exe" -install
        2⤵
        • Executes dropped EXE
        PID:2692
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
      1⤵
        PID:2116
      • C:\Program Files\WinRAR\WinRAR.exe
        "C:\Program Files\WinRAR\WinRAR.exe"
        1⤵
        • Executes dropped EXE
        • Modifies registry class
        • Suspicious behavior: GetForegroundWindowSpam
        PID:4296
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
        1⤵
          PID:1496
        • C:\Program Files\WinRAR\WinRAR.exe
          "C:\Program Files\WinRAR\WinRAR.exe"
          1⤵
          • Executes dropped EXE
          • Modifies registry class
          • Suspicious behavior: GetForegroundWindowSpam
          PID:4952
        • C:\Windows\system32\NOTEPAD.EXE
          "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
          1⤵
            PID:1812
          • C:\Program Files\WinRAR\WinRAR.exe
            "C:\Program Files\WinRAR\WinRAR.exe"
            1⤵
            • Executes dropped EXE
            • Modifies registry class
            • Suspicious behavior: GetForegroundWindowSpam
            PID:5172
          • C:\Windows\system32\NOTEPAD.EXE
            "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
            1⤵
              PID:2948
            • C:\Program Files\WinRAR\WinRAR.exe
              "C:\Program Files\WinRAR\WinRAR.exe"
              1⤵
              • Executes dropped EXE
              • Suspicious behavior: GetForegroundWindowSpam
              PID:4720
            • C:\Windows\system32\NOTEPAD.EXE
              "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
              1⤵
                PID:5876
              • C:\Program Files\WinRAR\WinRAR.exe
                "C:\Program Files\WinRAR\WinRAR.exe"
                1⤵
                • Executes dropped EXE
                • Modifies registry class
                • Suspicious behavior: GetForegroundWindowSpam
                PID:4224
              • C:\Windows\system32\NOTEPAD.EXE
                "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                1⤵
                  PID:3956
                • C:\Program Files\WinRAR\WinRAR.exe
                  "C:\Program Files\WinRAR\WinRAR.exe"
                  1⤵
                  • Executes dropped EXE
                  • Modifies registry class
                  PID:4900
                • C:\Windows\system32\NOTEPAD.EXE
                  "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                  1⤵
                    PID:5380
                  • C:\Program Files\WinRAR\WinRAR.exe
                    "C:\Program Files\WinRAR\WinRAR.exe"
                    1⤵
                    • Executes dropped EXE
                    • Modifies registry class
                    • Suspicious behavior: GetForegroundWindowSpam
                    PID:4496
                  • C:\Windows\system32\NOTEPAD.EXE
                    "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                    1⤵
                      PID:3504
                    • C:\Program Files\WinRAR\WinRAR.exe
                      "C:\Program Files\WinRAR\WinRAR.exe"
                      1⤵
                      • Executes dropped EXE
                      • Modifies registry class
                      PID:4580
                    • C:\Windows\system32\NOTEPAD.EXE
                      "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                      1⤵
                        PID:1632
                      • C:\Program Files\WinRAR\WinRAR.exe
                        "C:\Program Files\WinRAR\WinRAR.exe"
                        1⤵
                        • Executes dropped EXE
                        • Modifies registry class
                        • Suspicious behavior: GetForegroundWindowSpam
                        PID:2620
                      • C:\Windows\system32\NOTEPAD.EXE
                        "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                        1⤵
                          PID:1968
                        • C:\Program Files\WinRAR\WinRAR.exe
                          "C:\Program Files\WinRAR\WinRAR.exe"
                          1⤵
                          • Executes dropped EXE
                          • Modifies registry class
                          • Suspicious behavior: GetForegroundWindowSpam
                          PID:3468
                        • C:\Windows\system32\NOTEPAD.EXE
                          "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                          1⤵
                            PID:2940
                          • C:\Program Files\WinRAR\WinRAR.exe
                            "C:\Program Files\WinRAR\WinRAR.exe"
                            1⤵
                            • Executes dropped EXE
                            • Modifies registry class
                            • Suspicious behavior: GetForegroundWindowSpam
                            PID:2352
                          • C:\Windows\system32\NOTEPAD.EXE
                            "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                            1⤵
                              PID:4856
                            • C:\Program Files\WinRAR\WinRAR.exe
                              "C:\Program Files\WinRAR\WinRAR.exe"
                              1⤵
                              • Executes dropped EXE
                              • Modifies registry class
                              • Suspicious behavior: GetForegroundWindowSpam
                              PID:988
                            • 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
                                • Suspicious use of WriteProcessMemory
                                PID:4248
                                • C:\Program Files\WinRAR\RarExtInstaller.exe
                                  "C:\Program Files\WinRAR\RarExtInstaller.exe" -install
                                  2⤵
                                  • Executes dropped EXE
                                  PID:4800
                              • C:\Windows\system32\NOTEPAD.EXE
                                "C:\Windows\system32\NOTEPAD.EXE" C:\Program Files\WinRAR\WhatsNew.txt
                                1⤵
                                  PID:3460
                                • C:\Program Files\WinRAR\WinRAR.exe
                                  "C:\Program Files\WinRAR\WinRAR.exe"
                                  1⤵
                                  • Executes dropped EXE
                                  • Modifies registry class
                                  • Suspicious behavior: GetForegroundWindowSpam
                                  PID:1464

                                Network

                                      MITRE ATT&CK Enterprise v16

                                      Replay Monitor

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                                      Downloads

                                      Rar.exe

                                      • Path C:\Program Files\WinRAR\Rar.exe
                                      • Size 816KB
                                      • SHA256 2ce9d9f8cd10e8ceb3a943e1464938ecab682313f8e4525df17068b3eae5b05b
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      Rar.txt

                                      • Path C:\Program Files\WinRAR\Rar.txt
                                      • Size 110KB
                                      • SHA256 c6eb9a85f529808571cd04e3d752b5269d3b7be0b3f2f1cbac011942b326103e
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      RarExtInstaller.exe

                                      • Path C:\Program Files\WinRAR\RarExtInstaller.exe
                                      • Size 218KB
                                      • SHA256 eefc81979f082c8dbab05ff3a68930501f2226a7e2688903b2806e2eb6837a5a
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      RarExtPackage.msix

                                      • Path C:\Program Files\WinRAR\RarExtPackage.msix
                                      • Size 23KB
                                      • SHA256 74d160f732ae20d0e10088aa7b609d903801fd27ff16270a1c1ec0e7724fb33a
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      UnRAR.exe

                                      • Path C:\Program Files\WinRAR\UnRAR.exe
                                      • Size 547KB
                                      • SHA256 e785a0c0dcf79385f0483c1eb2242e3937d0447f6b21dd158906e92757b46542
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      Uninstall.exe

                                      • Path C:\Program Files\WinRAR\Uninstall.exe
                                      • Size 402KB
                                      • SHA256 926df1506082e88f388f394f4c9d190a23b21e1519acf03d0e474528bb920c8b
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      WhatsNew.txt

                                      • Path C:\Program Files\WinRAR\WhatsNew.txt
                                      • Size 61KB
                                      • SHA256 5ec6594b8e544fe47985ddf252f895af17c5db5e4655b6bdb7c45e890844b513
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      WinRAR.chm

                                      • Path C:\Program Files\WinRAR\WinRAR.chm
                                      • Size 321KB
                                      • SHA256 3f63a1c62f171902906e0b0bd720259aafe4786ddc5078953da73ac77f9ffea4
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      WinRAR.exe

                                      • Path C:\Program Files\WinRAR\WinRAR.exe
                                      • Size 3.3MB
                                      • SHA256 b3a8469d2b132391d206d0799b34c563c0bdf6e7166a378e249f45848f5f1cb8
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      8EC9B1D0ABBD7F98B401D425828828CE_D96A4C3B75E862E237A6B89F58F74354

                                      • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_D96A4C3B75E862E237A6B89F58F74354
                                      • Size 727B
                                      • SHA256 fe8fcb6332b2c1c35735f1c0370d61deafb30d7cd4771dfcc977ba07f1a7c100
                                      • MD5 SHA1 SHA512 TLSH

                                      8EC9B1D0ABBD7F98B401D425828828CE_D96A4C3B75E862E237A6B89F58F74354

                                      • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_D96A4C3B75E862E237A6B89F58F74354
                                      • Size 404B
                                      • SHA256 828d71291fc2bdf651a263e3e8dc5669661c0fe090d36e139c955fdfda9a70ab
                                      • MD5 SHA1 SHA512 TLSH

                                      version.dat

                                      • Path C:\Users\Admin\AppData\Roaming\WinRAR\version.dat
                                      • Size 12B
                                      • SHA256 a38ed8bef395eb261034990d3df2026afdaa46162e108f4e82c5cc3614d1c29c
                                      • MD5 SHA1 SHA512