Resubmissions

22/04/2024, 15:01

240422-sd558scg4v10

22/04/2024, 14:58

240422-sch93scg2110

Analysis

  • max time kernel
    91s
  • max time network
    204s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240412-en
  • resource tags

    arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    22/04/2024, 14:58

General

  • Target
    TangoGen/instructions.txt
  • Size 283B
  • Sample240422-sch93scg21
  • SHA256 24c17fd24aaf02a5f7ac3f6c94c26aac66b5666fc017339d62d82816c41010ec
  • MD5 SHA1 SHA512
Score
3/10

Malware Config

Signatures

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 10 IoCs

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

  • Modifies registry class 2 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 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\TangoGen\instructions.txt
    1⤵
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2408
    • C:\Windows\system32\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\TangoGen\instructions.txt
      2⤵
      • Opens file in notepad (likely ransom note)
      PID:4356
  • C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4592
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe"
      2⤵
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4424
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4424.0.1291794468\557970113" -parentBuildID 20230214051806 -prefsHandle 1768 -prefMapHandle 1760 -prefsLen 22074 -prefMapSize 235121 -appDir "C:\Program Files\Mozilla Firefox\browser" - {02445b54-de9e-44bd-85d1-5c701dd21894} 4424 "\\.\pipe\gecko-crash-server-pipe.4424" 1848 24c6f7f6f58 gpu
        3⤵
          PID:1256
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4424.1.73154367\1275902220" -parentBuildID 20230214051806 -prefsHandle 2360 -prefMapHandle 2348 -prefsLen 22110 -prefMapSize 235121 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {445ac2ed-8430-4c26-bff4-201da3388704} 4424 "\\.\pipe\gecko-crash-server-pipe.4424" 2372 24c63a8a558 socket
          3⤵
          • Checks processor information in registry
          PID:4012
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4424.2.1108614109\1572518470" -childID 1 -isForBrowser -prefsHandle 2936 -prefMapHandle 2932 -prefsLen 22148 -prefMapSize 235121 -jsInitHandle 1352 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {65b503d0-c6eb-4be3-9a91-3ae7906e7664} 4424 "\\.\pipe\gecko-crash-server-pipe.4424" 2948 24c73518958 tab
          3⤵
            PID:3436
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4424.3.415470815\890156227" -childID 2 -isForBrowser -prefsHandle 3624 -prefMapHandle 3620 -prefsLen 27614 -prefMapSize 235121 -jsInitHandle 1352 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {4e744dee-7f57-4da1-9f4c-41509a06f32e} 4424 "\\.\pipe\gecko-crash-server-pipe.4424" 3632 24c7613ef58 tab
            3⤵
              PID:892
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4424.4.743175878\1606977717" -childID 3 -isForBrowser -prefsHandle 5036 -prefMapHandle 4404 -prefsLen 27614 -prefMapSize 235121 -jsInitHandle 1352 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {6735f2ea-1ccc-41cd-85e1-99dbc6931667} 4424 "\\.\pipe\gecko-crash-server-pipe.4424" 5004 24c77d54658 tab
              3⤵
                PID:2752
              • C:\Program Files\Mozilla Firefox\firefox.exe
                "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4424.5.68514212\1219364063" -childID 4 -isForBrowser -prefsHandle 5172 -prefMapHandle 5056 -prefsLen 27614 -prefMapSize 235121 -jsInitHandle 1352 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {95ec5628-0abf-431f-ad39-253f23f7333c} 4424 "\\.\pipe\gecko-crash-server-pipe.4424" 5160 24c785a9258 tab
                3⤵
                  PID:2564
                • C:\Program Files\Mozilla Firefox\firefox.exe
                  "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4424.6.194950423\336006700" -childID 5 -isForBrowser -prefsHandle 5364 -prefMapHandle 5368 -prefsLen 27614 -prefMapSize 235121 -jsInitHandle 1352 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {f36c08be-e7de-41f9-9f3f-ba69fdec67c7} 4424 "\\.\pipe\gecko-crash-server-pipe.4424" 5356 24c785a9e58 tab
                  3⤵
                    PID:672
                  • C:\Program Files\Mozilla Firefox\firefox.exe
                    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4424.7.341744965\306276511" -childID 6 -isForBrowser -prefsHandle 5896 -prefMapHandle 5892 -prefsLen 27695 -prefMapSize 235121 -jsInitHandle 1352 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {0ae714d1-253c-4dda-9236-daec983542d7} 4424 "\\.\pipe\gecko-crash-server-pipe.4424" 5904 24c7a17f258 tab
                    3⤵
                      PID:2132
                    • C:\Program Files\Mozilla Firefox\firefox.exe
                      "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4424.8.732588754\1133693908" -parentBuildID 20230214051806 -prefsHandle 6164 -prefMapHandle 6160 -prefsLen 27695 -prefMapSize 235121 -appDir "C:\Program Files\Mozilla Firefox\browser" - {33c89f88-453f-402a-a9f7-91f050cb5e9e} 4424 "\\.\pipe\gecko-crash-server-pipe.4424" 6176 24c7ab63e58 rdd
                      3⤵
                        PID:3336
                      • C:\Program Files\Mozilla Firefox\firefox.exe
                        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4424.9.1823983917\2029031284" -parentBuildID 20230214051806 -sandboxingKind 1 -prefsHandle 6192 -prefMapHandle 6184 -prefsLen 27695 -prefMapSize 235121 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {f449ece3-a11f-4127-90a0-42f934a101f4} 4424 "\\.\pipe\gecko-crash-server-pipe.4424" 6320 24c7abd7858 utility
                        3⤵
                          PID:3484
                        • C:\Program Files\Mozilla Firefox\firefox.exe
                          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4424.10.1210588212\1395681880" -childID 7 -isForBrowser -prefsHandle 6608 -prefMapHandle 6604 -prefsLen 27695 -prefMapSize 235121 -jsInitHandle 1352 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {6a7b420f-bc02-499e-8cdb-1a680af05f52} 4424 "\\.\pipe\gecko-crash-server-pipe.4424" 6616 24c7ad23e58 tab
                          3⤵
                            PID:3540

                      Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            activity-stream.discovery_stream.json.tmp

                            • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\ta9v328x.default-release\activity-stream.discovery_stream.json.tmp
                            • Size 26KB
                            • SHA256 a6365e231c733480137711149158f8ddebaade47e2e7b5a600e7124c6e6fb655
                            • MD5 SHA1 SHA512 SSDEEP

                            1463

                            • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\ta9v328x.default-release\cache2\doomed\1463
                            • Size 16KB
                            • SHA256 c781cf0f3dcad61fddc17edb10645997cc8409b9ca6f03e6ae953888fe960eb8
                            • MD5 SHA1 SHA512 SSDEEP

                            21300

                            • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\ta9v328x.default-release\cache2\doomed\21300
                            • Size 16KB
                            • SHA256 1fc229e5c16791e2af2e47ddd7bf779fafdbf5d4c5e56bd128b58fc06543f79f
                            • MD5 SHA1 SHA512 SSDEEP

                            26868

                            • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\ta9v328x.default-release\cache2\doomed\26868
                            • Size 16KB
                            • SHA256 9f8db2c9d6f3ec4f6782a31ee6676ea9e82540951074e1f16632a37898c17d31
                            • MD5 SHA1 SHA512 SSDEEP

                            27740

                            • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\ta9v328x.default-release\cache2\doomed\27740
                            • Size 16KB
                            • SHA256 445bae41804f4cb1706528d2da29631cfecd4bb934370eb09540e98fb5872836
                            • MD5 SHA1 SHA512 SSDEEP

                            prefs.js

                            • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ta9v328x.default-release\prefs.js
                            • Size 7KB
                            • SHA256 05add04c82b46e8ae86ad7afc31956451c9b9e483621288a3b081be4a7ea6a4c
                            • MD5 SHA1 SHA512 SSDEEP

                            prefs.js

                            • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ta9v328x.default-release\prefs.js
                            • Size 6KB
                            • SHA256 03cb3067d4ada4c087a8144838fb4de6d7967234dcd64533979a01a141a6e223
                            • MD5 SHA1 SHA512 SSDEEP

                            recovery.jsonlz4

                            • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ta9v328x.default-release\sessionstore-backups\recovery.jsonlz4
                            • Size 4KB
                            • SHA256 e94f17d3cea1ca52da9a95e964ab411e67bb81441d27dbeff6eab46657c384cd
                            • MD5 SHA1 SHA512 SSDEEP

                            sessionstore.jsonlz4

                            • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ta9v328x.default-release\sessionstore.jsonlz4
                            • Size 4KB
                            • SHA256 38cfa200ffb46caabf74f4e40e217d99e4c1961cf2699b0efd3f19419b42e2ef
                            • MD5 SHA1 SHA512 SSDEEP