Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    24/04/2026, 14:40

General

  • Target
    SPOILER_grimloader-1.0Dropsy.jar
  • Size 7.4MB
  • Sample260424-r13sysdw8q
  • SHA256 078aaff53208f91cdf4b50ef50b00855fc2a17cd565af2fdf386fea63970660d
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Checks processor information in registry 2 TTPs 30 IoCs

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

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 2 IoCs
  • Suspicious behavior: LoadsDriver 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 52 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:\Program Files (x86)\Common Files\Oracle\Java\javapath\java.exe
    java -jar C:\Users\Admin\AppData\Local\Temp\SPOILER_grimloader-1.0Dropsy.jar
    1⤵
      PID:5044
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe"
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1664
      • 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 SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3204
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 2004 -prefsLen 27099 -prefMapHandle 2008 -prefMapSize 270279 -ipcHandle 2084 -initialChannelId {6918552c-3354-450b-861e-ec2716002729} -parentPid 3204 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3204" -appDir "C:\Program Files\Mozilla Firefox\browser" - 1 gpu
          3⤵
            PID:1908
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 2476 -prefsLen 27135 -prefMapHandle 2480 -prefMapSize 270279 -ipcHandle 2392 -initialChannelId {686132c4-bd01-4dd2-bb06-7b4abb4888fb} -parentPid 3204 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3204" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 2 socket
            3⤵
            • Checks processor information in registry
            PID:924
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 3780 -prefsLen 27276 -prefMapHandle 3784 -prefMapSize 270279 -jsInitHandle 3788 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 3796 -initialChannelId {81ce40bf-4112-4b3e-a94d-6df01a71ac83} -parentPid 3204 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3204" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 3 tab
            3⤵
            • Checks processor information in registry
            PID:3220
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 3948 -prefsLen 27276 -prefMapHandle 3952 -prefMapSize 270279 -ipcHandle 3968 -initialChannelId {b250bffd-d1e9-4834-b71e-f2043be90baa} -parentPid 3204 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3204" -appDir "C:\Program Files\Mozilla Firefox\browser" - 4 rdd
            3⤵
              PID:4748
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 4404 -prefsLen 34775 -prefMapHandle 4396 -prefMapSize 270279 -jsInitHandle 3812 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 4412 -initialChannelId {9739bbba-996f-4548-91ce-aeb1ea835d22} -parentPid 3204 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3204" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 5 tab
              3⤵
              • Checks processor information in registry
              PID:1184
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -sandboxingKind 0 -prefsHandle 3108 -prefsLen 35012 -prefMapHandle 3104 -prefMapSize 270279 -ipcHandle 5004 -initialChannelId {67e79191-7460-41fc-9146-475479cca678} -parentPid 3204 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3204" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 6 utility
              3⤵
              • Checks processor information in registry
              PID:5588
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 3148 -prefsLen 32900 -prefMapHandle 3104 -prefMapSize 270279 -jsInitHandle 3108 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5160 -initialChannelId {14ad435a-c021-45cb-a5c9-75b230739f46} -parentPid 3204 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3204" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 7 tab
              3⤵
              • Checks processor information in registry
              PID:5616
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5112 -prefsLen 32900 -prefMapHandle 5124 -prefMapSize 270279 -jsInitHandle 5128 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5168 -initialChannelId {f82ba4d0-6ea8-4859-b9a1-741bfaeee5b5} -parentPid 3204 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3204" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 8 tab
              3⤵
              • Checks processor information in registry
              PID:5624
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5528 -prefsLen 32900 -prefMapHandle 5532 -prefMapSize 270279 -jsInitHandle 5536 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5544 -initialChannelId {cb9e7684-0740-44bc-93b8-ad81eb5f9563} -parentPid 3204 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3204" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 9 tab
              3⤵
              • Checks processor information in registry
              PID:5636
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 6224 -prefsLen 33031 -prefMapHandle 6228 -prefMapSize 270279 -jsInitHandle 6232 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 6240 -initialChannelId {13c90bc4-966e-4ee4-b630-d87c13c78a59} -parentPid 3204 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3204" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 10 tab
              3⤵
              • Checks processor information in registry
              PID:3032
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -sandboxingKind 1 -prefsHandle 6088 -prefsLen 35143 -prefMapHandle 6480 -prefMapSize 270279 -ipcHandle 6504 -initialChannelId {07530e93-3d5f-4d3c-8880-709b1946e57b} -parentPid 3204 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3204" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 11 utility
              3⤵
              • Checks processor information in registry
              PID:1200
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 6684 -prefsLen 33031 -prefMapHandle 6688 -prefMapSize 270279 -jsInitHandle 6692 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 6700 -initialChannelId {3023342a-5ec3-441a-b3c4-b59110329007} -parentPid 3204 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3204" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 12 tab
              3⤵
              • Checks processor information in registry
              PID:5300
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 6952 -prefsLen 33031 -prefMapHandle 6956 -prefMapSize 270279 -jsInitHandle 6960 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 6920 -initialChannelId {3e6c1a41-5890-4cbd-b596-236fee4b3d68} -parentPid 3204 -crashReporter "\\.\pipe\gecko-crash-server-pipe.3204" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 13 tab
              3⤵
              • Checks processor information in registry
              PID:776
        • C:\Windows\System32\NOTEPAD.EXE
          "C:\Windows\System32\NOTEPAD.EXE" C:\Users\Admin\Desktop\virus.bat
          1⤵
          • Opens file in notepad (likely ransom note)
          PID:5256
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\Desktop\virus.bat" "
          1⤵
            PID:5200
          • C:\Windows\System32\NOTEPAD.EXE
            "C:\Windows\System32\NOTEPAD.EXE" C:\Users\Admin\Desktop\virus.bat
            1⤵
            • Opens file in notepad (likely ransom note)
            PID:544

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                AlternateServices.bin

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\AlternateServices.bin
                • Size 10KB
                • SHA256 1a88e32131badcbd8fb7cafa5ce0ad1f90c37c2f663a0fd1b491aa37b6059f51
                • MD5 SHA1 SHA512 SSDEEP TLSH

                AlternateServices.bin

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\AlternateServices.bin
                • Size 13KB
                • SHA256 7fe50fae2986130fbcf103f3bcaf607b99432752e917fafaa9ed342031b70bf5
                • MD5 SHA1 SHA512 SSDEEP TLSH

                data.safe.tmp

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\datareporting\glean\db\data.safe.tmp
                • Size 6KB
                • SHA256 a472cd8daec3db53f20aa503feaf16a8c0fdf58937565c6a90ac388834c6cebb
                • MD5 SHA1 SHA512 SSDEEP TLSH

                data.safe.tmp

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\datareporting\glean\db\data.safe.tmp
                • Size 7KB
                • SHA256 0c145e2d08331a2b9091ac5e5b8517f355a53506255bb4b05675d5126e4ca817
                • MD5 SHA1 SHA512 SSDEEP TLSH

                data.safe.tmp

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\datareporting\glean\db\data.safe.tmp
                • Size 7KB
                • SHA256 8f9c6d03f47f396bd7c093d1dea405cc58a41392702c0c75c3d8b8425c665123
                • MD5 SHA1 SHA512 SSDEEP TLSH

                events

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\datareporting\glean\events\events
                • Size 1KB
                • SHA256 0a2eac1eeb5358fea2f067fd1cfb4097a7f36138949ce74e754ad43b59fdc263
                • MD5 SHA1 SHA512 TLSH

                0387223a-73ab-4fb6-84e5-00c3792a957f

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\datareporting\glean\pending_pings\0387223a-73ab-4fb6-84e5-00c3792a957f
                • Size 16KB
                • SHA256 fd4573871f3dd78da64b0682f0f5be417973a2ceae4a99fcdb653172507b3086
                • MD5 SHA1 SHA512 SSDEEP TLSH

                4d5eca76-f146-428c-8b36-16989b1ac452

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\datareporting\glean\pending_pings\4d5eca76-f146-428c-8b36-16989b1ac452
                • Size 886B
                • SHA256 a61f2d4c82421a6b4e9c6705aa412f0638e7b4afe01ea50f98bfd06d5f662ec4
                • MD5 SHA1 SHA512 TLSH

                7e0b4594-e385-41d7-9b41-594180fb9934

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\datareporting\glean\pending_pings\7e0b4594-e385-41d7-9b41-594180fb9934
                • Size 2KB
                • SHA256 da098bee3ebcfafb921d4ae361d6b2d457d5f5bd302edcf1eb9069d9b76354e3
                • MD5 SHA1 SHA512 TLSH

                89f06727-4137-41af-8519-970fdb87f4fb

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\datareporting\glean\pending_pings\89f06727-4137-41af-8519-970fdb87f4fb
                • Size 883B
                • SHA256 aa718a49ddabc06675ca5ae4428fd8188f139ceadde948cb2ef53854814f92ef
                • MD5 SHA1 SHA512 TLSH

                9778443c-4f27-4afe-b406-4cb961c20f81

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\datareporting\glean\pending_pings\9778443c-4f27-4afe-b406-4cb961c20f81
                • Size 235B
                • SHA256 3d38f1d93142582531268e0cb284950cbfaf48dbdbce0b1b3cea0d34843a4da8
                • MD5 SHA1 SHA512 TLSH

                b5784401-ed18-4390-90df-df36259baf4b

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\datareporting\glean\pending_pings\b5784401-ed18-4390-90df-df36259baf4b
                • Size 235B
                • SHA256 0188214ecf5aba20c50ccbc38fd61674eb74c80bd0690aad60559b020c94c912
                • MD5 SHA1 SHA512 TLSH

                prefs-1.js

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\prefs-1.js
                • Size 6KB
                • SHA256 1a0406a5054350a635655f69d6d317422a3f25967c0aad3c5c058dbe1e7253ea
                • MD5 SHA1 SHA512 SSDEEP TLSH

                prefs-1.js

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\prefs-1.js
                • Size 6KB
                • SHA256 cce853057faee7df924b47729f8b39567ce10de64d1801f826ed734d5f0512e7
                • MD5 SHA1 SHA512 SSDEEP TLSH

                prefs.js

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\prefs.js
                • Size 6KB
                • SHA256 a1d22e90e814653dca5998e6e8e8a13f3078db02c6a9b2161cf9eed08857d544
                • MD5 SHA1 SHA512 SSDEEP TLSH

                {3cb2a679-b47d-429c-ac2b-5d297e00f495}.final

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\storage\default\https+++www.youtube.com\cache\morgue\149\{3cb2a679-b47d-429c-ac2b-5d297e00f495}.final
                • Size 192B
                • SHA256 04cae3c7b208fc55b25763913d0bbdc99232942086efdf705f2a27764be6f5ee
                • MD5 SHA1 SHA512 TLSH

                4084244320yCt7-%iCd7b%-fp3r4e6f.sqlite

                • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\14tbp3gd.default-release\storage\default\https+++www.youtube.com\idb\4084244320yCt7-%iCd7b%-fp3r4e6f.sqlite
                • Size 48KB
                • SHA256 cef6fa68616775535d17c00cf0fadf8accc1e77d78876b3566f21ebf890c6a88
                • MD5 SHA1 SHA512 SSDEEP TLSH

                virus.bat

                • Path C:\Users\Admin\Desktop\virus.bat
                • Size 30B
                • SHA256 7146b147f6b5ff1cf5a714566ffafdae5174e7b0dc6321f360f28e15e4b58c79
                • MD5 SHA1 SHA512

                memory/5044-2-0x000001BF66590000-0x000001BF66800000-memory.dmp

                memory/5044-12-0x000001BF66590000-0x000001BF66800000-memory.dmp

                memory/5044-11-0x000001BF66570000-0x000001BF66571000-memory.dmp