Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-12-2024 12:24

General

  • Target

    2024-12-22_551b1f0189a86fe7fa2a80d05fe561c7_bkransomware_floxif_hijackloader.exe

  • Size

    14.4MB

  • MD5

    551b1f0189a86fe7fa2a80d05fe561c7

  • SHA1

    11bc2027c3ff107fedbb01a142500598e466be85

  • SHA256

    1a62cff0fe800a54c466f65ce5ac697c890d32316f5d3001d39381b0bdd40770

  • SHA512

    5e8fe711a616a2cb5b66033011c2978f420fa49dbcf2302269855a146e1547ae921a42cebca29ddbb2c3f1f2d603fa3940bca792afa4104b1670ae88e2338b49

  • SSDEEP

    98304:8TOtQIZETGdOfW0+bs0ZmjBjcaw2lsuze/iBXsLVMZHvOyGCPvPZ0DByQNdXCd0d:8mt30t0u/Zk2KXCd0LWkVgeXS+

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\2024-12-22_551b1f0189a86fe7fa2a80d05fe561c7_bkransomware_floxif_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-22_551b1f0189a86fe7fa2a80d05fe561c7_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:2664
    • 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:1800
      • 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=0xfc,0x100,0x104,0xf8,0x108,0x7ffe17d746f8,0x7ffe17d74708,0x7ffe17d74718
        3⤵
          PID:4980
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2124,14305039288750616904,6125131347922940755,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2148 /prefetch:2
          3⤵
            PID:5016
          • 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=2124,14305039288750616904,6125131347922940755,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2208 /prefetch:3
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:2600
          • 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=2124,14305039288750616904,6125131347922940755,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2712 /prefetch:8
            3⤵
              PID:2260
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2124,14305039288750616904,6125131347922940755,131072 --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=3388 /prefetch:1
              3⤵
                PID:4608
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2124,14305039288750616904,6125131347922940755,131072 --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=3424 /prefetch:1
                3⤵
                  PID:2812
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2124,14305039288750616904,6125131347922940755,131072 --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=5168 /prefetch:1
                  3⤵
                    PID:2692
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2124,14305039288750616904,6125131347922940755,131072 --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=5188 /prefetch:1
                    3⤵
                      PID:3172
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2124,14305039288750616904,6125131347922940755,131072 --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=5444 /prefetch:1
                      3⤵
                        PID:4912
                      • 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=2124,14305039288750616904,6125131347922940755,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6380 /prefetch:8
                        3⤵
                          PID:4584
                        • 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=2124,14305039288750616904,6125131347922940755,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6380 /prefetch:8
                          3⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:3168
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2124,14305039288750616904,6125131347922940755,131072 --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=5944 /prefetch:1
                          3⤵
                            PID:4164
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2124,14305039288750616904,6125131347922940755,131072 --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=5936 /prefetch:1
                            3⤵
                              PID:2256
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2124,14305039288750616904,6125131347922940755,131072 --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=4772 /prefetch:1
                              3⤵
                                PID:1976
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2124,14305039288750616904,6125131347922940755,131072 --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=5328 /prefetch:1
                                3⤵
                                  PID:3264
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2124,14305039288750616904,6125131347922940755,131072 --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=3136 /prefetch:2
                                  3⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:1472
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:64
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:2520

                                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\Crashpad\settings.dat

                                  Filesize

                                  152B

                                  MD5

                                  37f660dd4b6ddf23bc37f5c823d1c33a

                                  SHA1

                                  1c35538aa307a3e09d15519df6ace99674ae428b

                                  SHA256

                                  4e2510a1d5a50a94fe4ce0f74932ab780758a8cbdc6d176a9ce8ab92309f26f8

                                  SHA512

                                  807b8b8dc9109b6f78fc63655450bf12b9a006ff63e8f29ade8899d45fdf4a6c068c5c46a3efbc4232b9e1e35d6494f00ded5cdb3e235c8a25023bfbd823992d

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

                                  Filesize

                                  152B

                                  MD5

                                  d7cb450b1315c63b1d5d89d98ba22da5

                                  SHA1

                                  694005cd9e1a4c54e0b83d0598a8a0c089df1556

                                  SHA256

                                  38355fd694faf1223518e40bac1996bdceaf44191214b0a23c4334d5fb07d031

                                  SHA512

                                  df04d4f4b77bae447a940b28aeac345b21b299d8d26e28ecbb3c1c9e9a0e07c551e412d545c7dbb147a92c12bad7ae49ac35af021c34b88e2c6c5f7a0b65f6a8

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

                                  Filesize

                                  936B

                                  MD5

                                  54824ffceb63a9d7af74fe420a87fc44

                                  SHA1

                                  a0bc05cdf4631a44dda3e126297a813f28d2dfe1

                                  SHA256

                                  478beee8a6ff1d51de9c0ac81908cc2e78b17270037432a6411aee3d8b43b9f1

                                  SHA512

                                  b1a4e0b7da49575328bcb9791d10b33523ac813990374bf3afe0e9f66fae2599fa50d79b4bfe46c74d2e21245bad3c2a0dd8919603d267405256dd9387fabdef

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

                                  Filesize

                                  4KB

                                  MD5

                                  c8ce717c244ea532dfa883e3eb60d61b

                                  SHA1

                                  810d9fbdd94cc290de33f5d505182c8ab34c67e7

                                  SHA256

                                  2829a92736cf8a9548acb301e5675d7ec3f7ba84fb64a87d798ec685b74cf27f

                                  SHA512

                                  ab6718ad2594fc1bd3b65a5746d88d12ac183ce43f6bd0400ab7c6819a5b64dc8c5a4f1dd49c6bc6e55354b6cdbd6eda2580ecf5cd8ec8b7179b73178c34ebd1

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

                                  Filesize

                                  5KB

                                  MD5

                                  6eb545520aae3ab88f09cb660f47955b

                                  SHA1

                                  573b1c7d7ec30bdac03b8d8bae46488257e97152

                                  SHA256

                                  2c0936c86ef92add23544f69291e23832ce2bbab6ca857980cddfb05fd414904

                                  SHA512

                                  236d59fb41d7d0a2aed50404f789fb97a5dda4e8a4f1ebc547ac2a7a9833e71958fc26d9a1a04bfcaaafd2435324050584c0bfb68d15d9f18eed2abc7ad3e5af

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

                                  Filesize

                                  72B

                                  MD5

                                  e6209628d8111483d7badc82815802e9

                                  SHA1

                                  a81a77f5e4df0da6dd0882628fbb1ffe4b9e2538

                                  SHA256

                                  3fbb2558466ee2c1e3ad4a5a3ff3d917d28a146e32030ad318ef2d4b7611f382

                                  SHA512

                                  6b546c63e349973b790df288282cc9c21be7d6b681588915301622027d4e7bd9ed9b2a97d0de814e405108df953ad33649bff426c850fd56cfa6b06aa71ad57c

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index~RFe5803c4.TMP

                                  Filesize

                                  48B

                                  MD5

                                  f4c08eeaae0688f63dcde3504af90c17

                                  SHA1

                                  0a001ff1226e51b564730ddc53ab5f37ca534139

                                  SHA256

                                  77cdf87b947fb77b010160f230aa1d807d8323cd5fc268cb5eb2741fd1f686d0

                                  SHA512

                                  0f0a7aeb202544a37cea32b00c2780043f1cbe14d8e75612be22a84fae8d97edbd60542f8929c544fd052f17a53a5269d022b53e434bdd39fdbbc435ec0c100c

                                • 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\Microsoft\Edge\User Data\Default\e05f039c-9925-4314-ba76-09a7130846e7.tmp

                                  Filesize

                                  9KB

                                  MD5

                                  ec48064484ec07c4c1bd89dbca9d333d

                                  SHA1

                                  bb27b57fc98b77f5e9e62b26cb32b16b0248b778

                                  SHA256

                                  fc3a50fc1967809f3c1523ecee8a163872b2d1b1a05376890c2c1421bc8e7f94

                                  SHA512

                                  435762368c287bc80ad766c22200c87a1a2988bd88af38b197240392e85b1b2bc6a728e5f66f675e1fcb9dd4e65a336915895fa1baddadc0acf1e70c15e7e373

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

                                  Filesize

                                  10KB

                                  MD5

                                  8795a1287bea813fdf7695e6b0e43cc2

                                  SHA1

                                  56569cde1ac762ba345664ed6ed488bfdaa14daa

                                  SHA256

                                  d26df2509d7a4842c5af1fb25968d63a288be41eb7b5673d71d0afa3f79c36d6

                                  SHA512

                                  260bd8776f16d824fdb6dbf4b8e3f33b9f18fe9fa7f704a1784454941031a7e1db68e083bbcdd114d172bb232ee71df5932a54c5524e3d256748b308259cb106

                                • C:\Users\Admin\AppData\Local\Temp\A1D26E2\7733F60A68.tmp

                                  Filesize

                                  14.3MB

                                  MD5

                                  7740b91aa5877cd86117db93dc5b0426

                                  SHA1

                                  b02a401b86aaa41768a15e4f027dccb812341fb7

                                  SHA256

                                  44df3a987ad432ea7942d8923dd2a8e29f3204119274ace5b0c5181838557564

                                  SHA512

                                  88890d8956872c8369ed2b3ede2349ae7021a770182dc3904f1ed983ae006355067d294abd0c5d77fc40c20cbad9e33e76bb29fd4d778f11079926bbc58e810f

                                • memory/2664-80-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB

                                • memory/2664-78-0x0000000000300000-0x0000000001174000-memory.dmp

                                  Filesize

                                  14.5MB

                                • memory/2664-49-0x0000000000300000-0x0000000001174000-memory.dmp

                                  Filesize

                                  14.5MB

                                • memory/2664-51-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB

                                • memory/2664-3-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB