Analysis

  • max time kernel
    135s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-11-2024 12:57

General

  • Target

    2024-11-19_f7ecab8e4e4d31561a85fae83426a508_bkransomware_floxif_hijackloader.exe

  • Size

    14.4MB

  • MD5

    f7ecab8e4e4d31561a85fae83426a508

  • SHA1

    5ed0adf3bd13234aeb6b73e8c458e75b6c6b8e01

  • SHA256

    848a30813af6b5ee7b8c4613cd305df89a0b1d539c199fe49afd322f8d3f9ba1

  • SHA512

    0fc5d64c304d49f2f01ffd5780bb67ad48b3580aae3e0d082aee1911cafbc0bf0d58520779fc22444792fc560ed93cd3d4b8989899c0753dde6265d28ce07a0f

  • SSDEEP

    98304:8pptQIZETGdOfW0+bs0ZmjBjcaw2lsuze/iBXsLVMZHvOyGCPvPZPDByQNdXCd0/:89t30t0u/Zk2/XCd0LWkVgeXSw

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
  • Event Triggered Execution: AppInit DLLs 1 TTPs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

  • 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\2024-11-19_f7ecab8e4e4d31561a85fae83426a508_bkransomware_floxif_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-11-19_f7ecab8e4e4d31561a85fae83426a508_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:5080
    • 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:8
      • 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,0x100,0xd4,0x104,0x7ffce96f46f8,0x7ffce96f4708,0x7ffce96f4718
        3⤵
          PID:2900
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2100,5085839866385228185,17433451996468322403,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2092 /prefetch:2
          3⤵
            PID:4092
          • 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=2100,5085839866385228185,17433451996468322403,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2404 /prefetch:3
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:3348
          • 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=2100,5085839866385228185,17433451996468322403,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2668 /prefetch:8
            3⤵
              PID:3416
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,5085839866385228185,17433451996468322403,131072 --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=3272 /prefetch:1
              3⤵
                PID:2332
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,5085839866385228185,17433451996468322403,131072 --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=3280 /prefetch:1
                3⤵
                  PID:2608
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,5085839866385228185,17433451996468322403,131072 --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=4692 /prefetch:1
                  3⤵
                    PID:2388
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,5085839866385228185,17433451996468322403,131072 --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=5244 /prefetch:1
                    3⤵
                      PID:2068
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,5085839866385228185,17433451996468322403,131072 --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=4992 /prefetch:1
                      3⤵
                        PID:3608
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,5085839866385228185,17433451996468322403,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6004 /prefetch:1
                        3⤵
                          PID:1904
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,5085839866385228185,17433451996468322403,131072 --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=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6020 /prefetch:1
                          3⤵
                            PID:5080
                          • 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=2100,5085839866385228185,17433451996468322403,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6340 /prefetch:8
                            3⤵
                              PID:4964
                            • 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=2100,5085839866385228185,17433451996468322403,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6340 /prefetch:8
                              3⤵
                              • Suspicious behavior: EnumeratesProcesses
                              PID:1756
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,5085839866385228185,17433451996468322403,131072 --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=6352 /prefetch:1
                              3⤵
                                PID:4088
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2100,5085839866385228185,17433451996468322403,131072 --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=6512 /prefetch:1
                                3⤵
                                  PID:2576
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2100,5085839866385228185,17433451996468322403,131072 --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=4800 /prefetch:2
                                  3⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:5040
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:4244
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:5056

                                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

                                  e443ee4336fcf13c698b8ab5f3c173d0

                                  SHA1

                                  9bf70b16f03820cbe3158e1f1396b07b8ac9d75a

                                  SHA256

                                  79e277da2074f9467e0518f0f26ca2ba74914bee82553f935a0ccf64a0119e8b

                                  SHA512

                                  cbf6f6aa0ea69b47f51592296da2b7be1180e7b483c61b4d17ba9ee1a2d3345cbe0987b96f4e25de1438b553db358f330aad8a26e8522601f055c3d5a8313cdd

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

                                  Filesize

                                  152B

                                  MD5

                                  56a4f78e21616a6e19da57228569489b

                                  SHA1

                                  21bfabbfc294d5f2aa1da825c5590d760483bc76

                                  SHA256

                                  d036661e765ee8fd18978a2b5501e8df6b220e4bca531d9860407555294c96fb

                                  SHA512

                                  c2c3cd1152bb486028fe75ab3ce0d0bc9d64c4ca7eb8860ddd934b2f6e0140d2c913af4fa082b88e92a6a6d20fd483a1cb9813209f371a0f56374bc97d7f863b

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

                                  Filesize

                                  936B

                                  MD5

                                  162fcf48020cc54d9a4e52450cd57e35

                                  SHA1

                                  9619b67139c4f625084907d198ff7e62008e9695

                                  SHA256

                                  870c3244e178667955e24571c19aca7e3fec6e2abc6176a8946db53a539427d0

                                  SHA512

                                  2afe7e48181808349fe311e226f18371f6c712df54def309077dd562a8395e35141e8f327e0e9d770de93048eb61bbedbe2ca88569c23dc2267cdcf586ebf4d2

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

                                  Filesize

                                  4KB

                                  MD5

                                  5e4a7109ed83e199d5bb64f8a9857c9f

                                  SHA1

                                  4fb2aabc37582336cef741c31365352a9026b7a3

                                  SHA256

                                  b27bd4b49087d2a8b8df7a50a81e678d294c924cf1f2ad8b624438348591b478

                                  SHA512

                                  c8c31fc00f406882f02482d83d5b3192e98f37dcdc83c6a1f3a66efeec1afbc5931f81ab20d56ade653617b43bec627ab0357cf8336f7852d1f92ac904f2ce85

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

                                  Filesize

                                  5KB

                                  MD5

                                  01b0106cfc5c148f5878ee79f8bc49ba

                                  SHA1

                                  666dee6ef8f6aa0aaac6cfb1cb54ac552a7b2ef9

                                  SHA256

                                  f87be3c9da6891e256b096643b34dfc22c62dd6211963b4d2c752221fd906acc

                                  SHA512

                                  1f0bb7617a7565e11c387c03c0251cc99585a91b3b3075e77158463552d7a0a20c87b9604b4280d09cc565ff3cdb9ad2e740c4a47656c41408943ebb32e1c332

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

                                  Filesize

                                  9KB

                                  MD5

                                  8cb24fb0619edaf6d0f6590ce3f3ad74

                                  SHA1

                                  f25e636b7f7947432ebe8bbddde4e274a50c49bc

                                  SHA256

                                  c0898beb98c534d3e135043c064dccbd2d571233e23bebb8543f5b97c27dfb81

                                  SHA512

                                  a4cb080043bdb1e901f87f39a3a614e0a47e84f7b1b67b942f75c54c6030645a1a15df4b4085301631b8d9d574795aa6a007d057e7347b9db15bdb4cb5f8c5de

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

                                  Filesize

                                  72B

                                  MD5

                                  27dc6c41063248e6b0f6619ae27190fd

                                  SHA1

                                  9314bbae41be7f9f37d6a95bdf9404742bf18970

                                  SHA256

                                  42ce79c0ddaee4cbf6eabf6abbc92a4e9fcfa1a9cf4b814b68a3c03d74210a47

                                  SHA512

                                  df29909f9684d7abffb5bacfc23bc2d53b9f00ea35d5ed9da407d31e3e68898a595455186ee863c2863dede7385224b7bf0c3a779b150c0a795b8b5168aa363f

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index~RFe583d52.TMP

                                  Filesize

                                  48B

                                  MD5

                                  885a5efa7f03dc458655bcdff1ff5d3a

                                  SHA1

                                  1c7252b66fd6eb4cb3938e9bec5787c91dfd86ab

                                  SHA256

                                  9a4ad89e7787186eae6fc2221cd67f5fd2a05e87a17820e4067b8ede16d99837

                                  SHA512

                                  d39ce6fd0573ae25b40e56df96f0741df3c41c312c4c8d1f9a83396c7dce7d10dcc8fc0e280dbbc56d429e449c46d0139a439f00bf429cd215cfa2cb0fd6d766

                                • 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\Local State

                                  Filesize

                                  10KB

                                  MD5

                                  ea0237f48bcead8dfa9938f5b3be4a28

                                  SHA1

                                  7a5ea6a07d47a0ee7b2336dacec1197b4a7bab62

                                  SHA256

                                  366aee44be0654f993e5450486ed36f6966f5a87addcf37ba39fcb0409d0af03

                                  SHA512

                                  82801f8f24986fe90ca91d4108f4e31149ca885c862b5a5e39d29ad34a479eb1fc39810bebd398750fcfe4d38a6b61a16c314b97a7c3e314b173c5bd02219005

                                • C:\Users\Admin\AppData\Local\Temp\A1D26E2\AF4B133413D8.tmp

                                  Filesize

                                  14.3MB

                                  MD5

                                  7740b91aa5877cd86117db93dc5b0426

                                  SHA1

                                  b02a401b86aaa41768a15e4f027dccb812341fb7

                                  SHA256

                                  44df3a987ad432ea7942d8923dd2a8e29f3204119274ace5b0c5181838557564

                                  SHA512

                                  88890d8956872c8369ed2b3ede2349ae7021a770182dc3904f1ed983ae006355067d294abd0c5d77fc40c20cbad9e33e76bb29fd4d778f11079926bbc58e810f

                                • memory/5080-49-0x0000000000750000-0x00000000015C4000-memory.dmp

                                  Filesize

                                  14.5MB

                                • memory/5080-80-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB

                                • memory/5080-78-0x0000000000750000-0x00000000015C4000-memory.dmp

                                  Filesize

                                  14.5MB

                                • memory/5080-51-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB

                                • memory/5080-3-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB