Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-12-2024 12:39

General

  • Target

    2024-12-17_b1cd90e9fe382f483aabfebed44f75de_bkransomware_floxif_hijackloader.exe

  • Size

    14.4MB

  • MD5

    b1cd90e9fe382f483aabfebed44f75de

  • SHA1

    0a7b2ea127c40968aa4802b46ddcbcb8985c68c1

  • SHA256

    5a650596a18ba8f2b37eb09613542fe857f7d717e374dbe970c976933d38a38d

  • SHA512

    54e04e524e12a8d589ea329dfaf79d8431256e07b62173a6731e5d0d0f46af5b7694bcd27420e7247d095a671498e0a0f40091a18b17af19624f2282f9654a7f

  • SSDEEP

    98304:8TxtQIZETGdOfW0+bs0ZmjBjcaw2lsuze/iBXsLVMZHvOyGCPvPZZDByQNdXCd07:8Xt30t0u/Zk25XCd0LWkVgeXS8

Malware Config

Signatures

  • Floxif family
  • Floxif, Floodfix

    Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.

  • Detects Floxif payload 1 IoCs
  • A potential corporate email address has been identified in the URL: [email protected]
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Loads dropped DLL 1 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • UPX packed file 4 IoCs

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

  • Drops file in Program Files directory 2 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 25 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-12-17_b1cd90e9fe382f483aabfebed44f75de_bkransomware_floxif_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-17_b1cd90e9fe382f483aabfebed44f75de_bkransomware_floxif_hijackloader.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer settings
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4824
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://playinfo.gomlab.com/ending_browser.gom?product=GOMPLAYER
      2⤵
      • Enumerates system info in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:3328
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xf8,0xfc,0x100,0xd4,0x104,0x7ff80b3a46f8,0x7ff80b3a4708,0x7ff80b3a4718
        3⤵
          PID:3212
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2168 /prefetch:2
          3⤵
            PID:904
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2220 /prefetch:3
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:4584
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2808 /prefetch:8
            3⤵
              PID:2912
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3364 /prefetch:1
              3⤵
                PID:2572
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3376 /prefetch:1
                3⤵
                  PID:2604
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5088 /prefetch:1
                  3⤵
                    PID:3784
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5360 /prefetch:1
                    3⤵
                      PID:3856
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4788 /prefetch:1
                      3⤵
                        PID:1376
                      • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6360 /prefetch:8
                        3⤵
                          PID:1256
                        • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6360 /prefetch:8
                          3⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:4140
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6356 /prefetch:1
                          3⤵
                            PID:2472
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5984 /prefetch:1
                            3⤵
                              PID:4828
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5568 /prefetch:1
                              3⤵
                                PID:3028
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4876 /prefetch:1
                                3⤵
                                  PID:1592
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2156,10461873849133439692,10165564638509269207,131072 --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --gpu-preferences=UAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAEAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1980 /prefetch:2
                                  3⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:4352
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:1652
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:1168

                                Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

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                                Downloads

                                • C:\Program Files\Common Files\System\symsrv.dll

                                  Filesize

                                  67KB

                                  MD5

                                  7574cf2c64f35161ab1292e2f532aabf

                                  SHA1

                                  14ba3fa927a06224dfe587014299e834def4644f

                                  SHA256

                                  de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

                                  SHA512

                                  4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\57ba897b-0c23-4c93-a2db-91b13dd88b61.tmp

                                  Filesize

                                  10KB

                                  MD5

                                  301f5f0d19804e01656d82300ccf4ab1

                                  SHA1

                                  8bec67c5b7f645514270a10ea56144ff6fe40339

                                  SHA256

                                  cb6462173abcab2881990c95231067b2fd9cd4be28c741cbff00806524011a03

                                  SHA512

                                  0b37b51cd8ef3645637a2fe0b7e5b76301034397bf82569e03656da819fe33fee81b2564835627a28e22d5f8d183bfdc4ae11ec7fffa5fb01ca4b588a2b03a2a

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                                  Filesize

                                  152B

                                  MD5

                                  f426165d1e5f7df1b7a3758c306cd4ae

                                  SHA1

                                  59ef728fbbb5c4197600f61daec48556fec651c1

                                  SHA256

                                  b68dfc21866d0abe5c75d70acc54670421fa9b26baf98af852768676a901b841

                                  SHA512

                                  8d437fcb85acb0705bf080141e7a021740901248985a76299ea8c43e46ad78fb88c738322cf302f6a550caa5e79d85b36827e9b329b1094521b17cf638c015b6

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                                  Filesize

                                  152B

                                  MD5

                                  6960857d16aadfa79d36df8ebbf0e423

                                  SHA1

                                  e1db43bd478274366621a8c6497e270d46c6ed4f

                                  SHA256

                                  f40b812ce44e391423eb66602ac0af138a1e948aa8c4116045fef671ef21cd32

                                  SHA512

                                  6deb2a63055a643759dd0ae125fb2f68ec04a443dbf8b066a812b42352bbcfa4517382ed0910c190c986a864559c3453c772e153ee2e9432fb2de2e1e49ca7fe

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index

                                  Filesize

                                  936B

                                  MD5

                                  71be60cf1efc3939fe936ce36d058f86

                                  SHA1

                                  814f5edb4fb9ea62244bf209b9e5fbde3db395ff

                                  SHA256

                                  41ed785937fa6288799ad38f5b6ce110325a982e66459d7fc44214ee16462d86

                                  SHA512

                                  53ce7cf0d46d20429eeecf7e250fa05fd3162578b4f84119c4f3df03cf7bbd827eef641314a8d05d22542659d9e8df3af3fc97a603d53b20bed5194975debb7a

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State

                                  Filesize

                                  4KB

                                  MD5

                                  41f461dae05551180c90736fa7e8f4ad

                                  SHA1

                                  63b279cda1274970cb6890dd9c9f9ceafab866f7

                                  SHA256

                                  a21e78db901b030cc78515f7f5dd9fa1a87f07e468e09d07362024f0b99cebdb

                                  SHA512

                                  b9b9c4fea52d92b59a00643e151fece7fbe84e94ce3123e60b56e01335e6f138ae625505060f3eb188d47d4a193b7add00b09313de41d3dd9196c6480ad3cf0d

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                  Filesize

                                  9KB

                                  MD5

                                  2f91b712eb667c01abdfd8175a3e7390

                                  SHA1

                                  1b5173b12e7a8b2046f49b2a44d160b58f7319f5

                                  SHA256

                                  0cae38eff40131adad4d0edcad53d24ac59bf560ca4e5b6d2cd760f749d30d05

                                  SHA512

                                  ef9391d3d225bb7a53f34220440433f47b2b4f08176ddb20997b5cfc7b0afe1e71b850f4d0ccfc205f3878834bfbe10a2909f3d0592b82f3372836ea82b8c29a

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                                  Filesize

                                  5KB

                                  MD5

                                  eccddd775b4b0b3af1add15ec521feba

                                  SHA1

                                  79c50ea785358446df2e942c2d99698f270314f3

                                  SHA256

                                  80ac106c23164713a7888d30ecec25e6ead8fc6f143eed74006e99a892d54b69

                                  SHA512

                                  d9558efed8c9ac4614bd19369ba3148ea439e691c4ceb1c6769257390cb7cb5c53d227cfb43cd4b26c7e70a911655d9f1a2eb1eef537d5425c1a690dda38166b

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index

                                  Filesize

                                  72B

                                  MD5

                                  84241612907a3f3380c0daba1fa33c1e

                                  SHA1

                                  a28dc8dca73e6f56ad033d067730d9ff46e699a2

                                  SHA256

                                  500dbdd5d45c21c84634c0bb5f0b53c6b956cae12f2b1916e6522467535c78c0

                                  SHA512

                                  f9be2af7dc9c5f568dbf1b37294d5a65b40fa4c1806bfcde9e2121a1d317adeef0fa5f772022a237cc6922163c8b3c4f2ad32a4524ef3d6c4907adc9b4a4c43d

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index~RFe5801d0.TMP

                                  Filesize

                                  48B

                                  MD5

                                  cfdf47ef01158d69e2f1633cc3347d9f

                                  SHA1

                                  cb767be1282890aa2ac9e8e53ae33583ff0693bb

                                  SHA256

                                  188dfa854fc3a857a93ce5eff86ab6b1bdae9680e68121a6e1a4c508b4af6b04

                                  SHA512

                                  2505c18eb579d368f0086af808d6a61b5f73cf2e0beb5eb13622e8a3f85eec73cddee663161efec6376b1e2f6723ede89b1fedcb128fe525b09c742a6ae3b286

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

                                  Filesize

                                  16B

                                  MD5

                                  6752a1d65b201c13b62ea44016eb221f

                                  SHA1

                                  58ecf154d01a62233ed7fb494ace3c3d4ffce08b

                                  SHA256

                                  0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

                                  SHA512

                                  9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

                                • C:\Users\Admin\AppData\Local\Temp\A1D26E2\7678E2412D8.tmp

                                  Filesize

                                  14.3MB

                                  MD5

                                  7740b91aa5877cd86117db93dc5b0426

                                  SHA1

                                  b02a401b86aaa41768a15e4f027dccb812341fb7

                                  SHA256

                                  44df3a987ad432ea7942d8923dd2a8e29f3204119274ace5b0c5181838557564

                                  SHA512

                                  88890d8956872c8369ed2b3ede2349ae7021a770182dc3904f1ed983ae006355067d294abd0c5d77fc40c20cbad9e33e76bb29fd4d778f11079926bbc58e810f

                                • memory/4824-62-0x0000000000660000-0x00000000014D4000-memory.dmp

                                  Filesize

                                  14.5MB

                                • memory/4824-64-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB

                                • memory/4824-49-0x0000000000660000-0x00000000014D4000-memory.dmp

                                  Filesize

                                  14.5MB

                                • memory/4824-51-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB

                                • memory/4824-3-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB