Analysis

  • max time kernel
    134s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-12-2024 12:22

General

  • Target

    2024-12-09_1405922fdcd963ac882a14cb673b3eaf_bkransomware_floxif_hijackloader.exe

  • Size

    14.4MB

  • MD5

    1405922fdcd963ac882a14cb673b3eaf

  • SHA1

    879961b3817987c4a289417bfaed6ca09f133f76

  • SHA256

    bae6a3e39449907c67dfe2b8b6d0ce6e989fead841f3f426e54bb66238d8af38

  • SHA512

    3d05caffb9eaf3f59b86839a8085c629d7e4abc993d48445f7e4269de92316df68c08b71218d48c9e76d535ae034c0f2be2484a193ed43b11247c415ec453669

  • SSDEEP

    98304:8TatQIZETGdOfW0+bs0ZmjBjcaw2lsuze/iBXsLVMZHvOyGCPvPZ+DByQNdXCd0R:8qt30t0u/Zk2YXCd0LWkVgeXSG

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\2024-12-09_1405922fdcd963ac882a14cb673b3eaf_bkransomware_floxif_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-09_1405922fdcd963ac882a14cb673b3eaf_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:2872
    • 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:4992
      • 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,0x100,0xd4,0x104,0x7ffd55f546f8,0x7ffd55f54708,0x7ffd55f54718
        3⤵
          PID:5004
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2104,14354876530317692182,6630914019408875197,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2120 /prefetch:2
          3⤵
            PID:1232
          • 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=2104,14354876530317692182,6630914019408875197,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2308 /prefetch:3
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:392
          • 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=2104,14354876530317692182,6630914019408875197,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2940 /prefetch:8
            3⤵
              PID:5028
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,14354876530317692182,6630914019408875197,131072 --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=3304 /prefetch:1
              3⤵
                PID:3288
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,14354876530317692182,6630914019408875197,131072 --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=3096 /prefetch:1
                3⤵
                  PID:4432
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,14354876530317692182,6630914019408875197,131072 --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=4660 /prefetch:1
                  3⤵
                    PID:1604
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,14354876530317692182,6630914019408875197,131072 --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=4676 /prefetch:1
                    3⤵
                      PID:1136
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,14354876530317692182,6630914019408875197,131072 --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=5296 /prefetch:1
                      3⤵
                        PID:4608
                      • 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=2104,14354876530317692182,6630914019408875197,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6220 /prefetch:8
                        3⤵
                          PID:3924
                        • 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=2104,14354876530317692182,6630914019408875197,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=6220 /prefetch:8
                          3⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:4308
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,14354876530317692182,6630914019408875197,131072 --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=4768 /prefetch:1
                          3⤵
                            PID:2264
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,14354876530317692182,6630914019408875197,131072 --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=5348 /prefetch:1
                            3⤵
                              PID:624
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,14354876530317692182,6630914019408875197,131072 --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=5216 /prefetch:1
                              3⤵
                                PID:5116
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2104,14354876530317692182,6630914019408875197,131072 --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=5572 /prefetch:1
                                3⤵
                                  PID:1356
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2104,14354876530317692182,6630914019408875197,131072 --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=5804 /prefetch:2
                                  3⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:840
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:4988
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:1532

                                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

                                  912B

                                  MD5

                                  7113a879738a39d29b42058a0ce0465b

                                  SHA1

                                  9d12d4682dee2d120d4d24d42a65ab7d5c8dd0d5

                                  SHA256

                                  19c4f7349ef6626489e8c54b75a2d5cbda2c03c399213bae5c8a9ab5f3b73e4b

                                  SHA512

                                  4b191c43786f45aabf235e9458474fcb5faa96b27666807e1044c37ebe7e9ca90fffc018d3263972e8b97e09b846edc25a2ca2c9b6c55bbb159697c094a487c2

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

                                  Filesize

                                  4KB

                                  MD5

                                  753c1e24251b3ad74b62248349acbdb6

                                  SHA1

                                  f1b9944955e856255d88b65d71e0d30e84a56cff

                                  SHA256

                                  4590ac6ff76440b1572711966463508da1debfcebbcb78586aff5dacc61ab5ef

                                  SHA512

                                  7418e8fdc0342161d6f59e8e9b8251a9d3b5ca1efae8314c6e9b882c0cc1c39d9493febe95669f39890c8c12318d38d04414f4d847a96ada1d450f90bdf624a9

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

                                  Filesize

                                  9KB

                                  MD5

                                  cf1fb7a5d5803dbfbe84c4e6093a1568

                                  SHA1

                                  001d94afdda219fe5e8263a3731dd40046d76214

                                  SHA256

                                  e037038e277f381c2f4299792c216cd4f07fe79f60e5daa856c88abe42261729

                                  SHA512

                                  9335e3c55733a3a3ed63d95adbcadc211fc9a69454103dd86d83d8286b38460235d16496bf615322eb2ec4a976f43568d6ab5631542dc81c5266f0af1bbddefb

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

                                  Filesize

                                  5KB

                                  MD5

                                  8707adfdc0bb98dd98e90a60bb4164c6

                                  SHA1

                                  4c9d0e41dda038fbcfdacf29ced19294dec85242

                                  SHA256

                                  c1ecb9d07441aef6889aa7a79999a89c78be0852a1b5fec7a38a78d31046aede

                                  SHA512

                                  b3ad01dd67d954323be4930f2dc570001359cc43336e360e0b60da8ca5de93e3e40b5ada27ae9e88722319f08b9f4cb261a14d4d95e1921be7981a0edda2f3bf

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

                                  Filesize

                                  72B

                                  MD5

                                  021ac5cd53978e10ddd2ed79a9eaf9b6

                                  SHA1

                                  5371d2a8ce1d3a7ed1dcf0e7574fb2367783c63c

                                  SHA256

                                  45638d839fa22be66463e8d948fc5a5f444596a1f34390619e41d214a0242bad

                                  SHA512

                                  59472aace943fd34cc78dace705175d65ad91af7d7dda7f4d29356c01df85a20fd94a487fd95b9e4c9210f7098baa32d2d0dcb8c8da7b384799e120dc964764d

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index~RFe581a0b.TMP

                                  Filesize

                                  48B

                                  MD5

                                  1bd50704cd1dae27dc649ea592a4084b

                                  SHA1

                                  93de65c8098bb59d72f4f8425b8b457aa00d315d

                                  SHA256

                                  e855a4dd35724eb72e749dd4c19186fdbb5eaef1b70154ad4f1919e9e66f814f

                                  SHA512

                                  0dfd365f8b71c0c65acd341125dcb930901f37f06069f1d904696354f54cef1448e722c4e3267109b56f2e42dd728fa6a7039d2f86300f185ef5b58752ab9007

                                • 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

                                  0eba941022576e006b32cf57f89d30cd

                                  SHA1

                                  790067333685a4bd5637d5eb96be7bcf4cf9bc75

                                  SHA256

                                  cc71b589d2c8ee7b5cf1e1f2631fd1922477e10b0376e75d91c9697799b13824

                                  SHA512

                                  525f705eb6de4e6574cbe99d247d69b076fef60d50f873a3b095150c511648ae57f98452dd8dd34890a1e74f275f3dcdd38be1aa8ecbd03f047cb250a0bbbddc

                                • C:\Users\Admin\AppData\Local\Temp\A1D26E2\88991194B38.tmp

                                  Filesize

                                  14.3MB

                                  MD5

                                  7740b91aa5877cd86117db93dc5b0426

                                  SHA1

                                  b02a401b86aaa41768a15e4f027dccb812341fb7

                                  SHA256

                                  44df3a987ad432ea7942d8923dd2a8e29f3204119274ace5b0c5181838557564

                                  SHA512

                                  88890d8956872c8369ed2b3ede2349ae7021a770182dc3904f1ed983ae006355067d294abd0c5d77fc40c20cbad9e33e76bb29fd4d778f11079926bbc58e810f

                                • memory/2872-63-0x00000000007F0000-0x0000000001664000-memory.dmp

                                  Filesize

                                  14.5MB

                                • memory/2872-65-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB

                                • memory/2872-49-0x00000000007F0000-0x0000000001664000-memory.dmp

                                  Filesize

                                  14.5MB

                                • memory/2872-51-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB

                                • memory/2872-3-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB