Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-12-2024 12:23

General

  • Target

    2024-12-28_55b322fb7b471824b829dbc851598f79_bkransomware_floxif_hijackloader.exe

  • Size

    14.4MB

  • MD5

    55b322fb7b471824b829dbc851598f79

  • SHA1

    3c2262c5415b05876845e1552ce014a565cf1c68

  • SHA256

    9882d6299dbf72f54b9c4ebab591176f41c46d27a16009dc853ad8361931258f

  • SHA512

    81246ab755237cd0ab453255c5a89ab49eb6180348b0d565f8dfb69b1acb7110beb303bcd63a57f4c124147090f36b097279bc1e411950e9114b123e679ade1a

  • SSDEEP

    98304:8TDtQIZETGdOfW0+bs0ZmjBjcaw2lsuze/iBXsLVMZHvOyGCPvPZcDByQNdXCd0G:8Vt30t0u/Zk2eXCd0LWkVgeXSp

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\2024-12-28_55b322fb7b471824b829dbc851598f79_bkransomware_floxif_hijackloader.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-28_55b322fb7b471824b829dbc851598f79_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:3312
    • 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:4176
      • 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,0x100,0x104,0xf8,0x108,0x7ffc0c6c46f8,0x7ffc0c6c4708,0x7ffc0c6c4718
        3⤵
          PID:2292
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2196,17246558092727790307,2028035443726326955,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2212 /prefetch:2
          3⤵
            PID:4120
          • 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=2196,17246558092727790307,2028035443726326955,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2264 /prefetch:3
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:5104
          • 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=2196,17246558092727790307,2028035443726326955,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2728 /prefetch:8
            3⤵
              PID:4208
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,17246558092727790307,2028035443726326955,131072 --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=3268 /prefetch:1
              3⤵
                PID:4128
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,17246558092727790307,2028035443726326955,131072 --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=3292 /prefetch:1
                3⤵
                  PID:3936
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,17246558092727790307,2028035443726326955,131072 --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=5076 /prefetch:1
                  3⤵
                    PID:3924
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,17246558092727790307,2028035443726326955,131072 --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=5148 /prefetch:1
                    3⤵
                      PID:3228
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,17246558092727790307,2028035443726326955,131072 --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=5144 /prefetch:1
                      3⤵
                        PID:3172
                      • 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=2196,17246558092727790307,2028035443726326955,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5988 /prefetch:8
                        3⤵
                          PID:436
                        • 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=2196,17246558092727790307,2028035443726326955,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5988 /prefetch:8
                          3⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:4528
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,17246558092727790307,2028035443726326955,131072 --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=5980 /prefetch:1
                          3⤵
                            PID:3716
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,17246558092727790307,2028035443726326955,131072 --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=4728 /prefetch:1
                            3⤵
                              PID:1896
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,17246558092727790307,2028035443726326955,131072 --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=3992 /prefetch:1
                              3⤵
                                PID:4996
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2196,17246558092727790307,2028035443726326955,131072 --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=5800 /prefetch:1
                                3⤵
                                  PID:4396
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2196,17246558092727790307,2028035443726326955,131072 --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=1752 /prefetch:2
                                  3⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:1896
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:3640
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:992

                                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

                                  36988ca14952e1848e81a959880ea217

                                  SHA1

                                  a0482ef725657760502c2d1a5abe0bb37aebaadb

                                  SHA256

                                  d7e96088b37cec1bde202ae8ec2d2f3c3aafc368b6ebd91b3e2985846facf2e6

                                  SHA512

                                  d04b2f5afec92eb3d9f9cdc148a3eddd1b615e0dfb270566a7969576f50881d1f8572bccb8b9fd7993724bdfe36fc7633a33381d43e0b96c4e9bbd53fc010173

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

                                  Filesize

                                  152B

                                  MD5

                                  fab8d8d865e33fe195732aa7dcb91c30

                                  SHA1

                                  2637e832f38acc70af3e511f5eba80fbd7461f2c

                                  SHA256

                                  1b034ffe38e534e2b7a21be7c1f207ff84a1d5f3893207d0b4bb1a509b4185ea

                                  SHA512

                                  39a3d43ef7e28fea2cb247a5d09576a4904a43680db8c32139f22a03d80f6ede98708a2452f3f82232b868501340f79c0b3f810f597bcaf5267c3ccfb1704b43

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

                                  Filesize

                                  912B

                                  MD5

                                  f34a3193408ede8ac8322d9d8823772e

                                  SHA1

                                  6013ca8e7553be78cd1e437165f2f03bfe80c347

                                  SHA256

                                  3743d33b25b3b76806befaae1037be51237668b73b38267cec964ddf12f4630c

                                  SHA512

                                  5ace9e9abf48f9a346a622a564555f8b8ab418203fa71a599b1173551298f3ba2db437887fe440a8328ef768761d2a6ebf1edbc359b7809cb9d7e79f2f790e38

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

                                  Filesize

                                  4KB

                                  MD5

                                  47c75c0ba81621284f972835bfd18615

                                  SHA1

                                  0de44413caea3f92bb814db277bff4c578c342ba

                                  SHA256

                                  2f0195d3ea3772e678d76769fc2065f91f333f84ce3239dc9c0a7493012b3cc8

                                  SHA512

                                  3b87275f14da8082834a4a5baee7071d2e8d2ac35bebdc61d1d9877da93c0f1ae06f6bb49e6a84497a2903f89e798b5da1ef91b161c6a574fad1c007061e96f9

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

                                  Filesize

                                  5KB

                                  MD5

                                  16788db22d2dcb0455e67bc404c2a906

                                  SHA1

                                  f702efa3140ecd8cda7dcf60340424d0cdb0cfea

                                  SHA256

                                  0a1e5201d13204a6af72601bcf45b24e05f6759e7506da90b0bfda0c6bc5b219

                                  SHA512

                                  72163c395aabd5f531330a0db3f0cfb6981ff158b153f25a91c2618bc75b6465d49fc8977080263d4036737a61911ef7746926304446f02698df35427e9b5fd0

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

                                  Filesize

                                  9KB

                                  MD5

                                  30e53b1f6d4e0e4dc6637979921c80bd

                                  SHA1

                                  a6232e5ee066b1f4a6904f7f6088106f31a41fb2

                                  SHA256

                                  f76a362d2d85174419c1ec9a740f15d54875c84ca20a525b76ffe5755e8c7528

                                  SHA512

                                  2be484170e94f6a732f7c6cc322493de07ebca5b8fd70a6c127c0caab8dec24018a648a21b43f888bfb9790c30279d8d0e0353d3cec7f37d7f9dc47a4525776e

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

                                  Filesize

                                  72B

                                  MD5

                                  76f38cc185ce261b3459e7cae2337237

                                  SHA1

                                  e4ed35dc2abb87b8bb6b4bcb8ca4958044836f6f

                                  SHA256

                                  bf7bcf6ad539008432ebde77bf1f7fb0510d98a46e6c00c817b11cd5f39b2f07

                                  SHA512

                                  c39343ece12111673b51fbd89ad361c9cc36ae9ce37242c09801cace6233a28539b41d6e90dc4c942fc2947f82865f99c4ea3e1383d496129d9bd3b602e356d3

                                • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index~RFe583c49.TMP

                                  Filesize

                                  48B

                                  MD5

                                  8fc97914b891011d8928aa27dd6accf7

                                  SHA1

                                  9de8a53efad462fcaa6a2f4cabe795cfdac162e9

                                  SHA256

                                  ed538f18a1c17af6ca31057cb3f26c09bbfc9f76d6c8b31aa8c3d5e4af560b4e

                                  SHA512

                                  8e4ab440fe84d0d6b3fae32ecb7df9a213d8d94cf2c4447b9af62c98a9fb5d8cc8d060a636c117dd86b8b0ad538d580b6584f3b1296138b420a846e49b4a605a

                                • 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

                                  7da72885315a3e9d06d5776a85990efa

                                  SHA1

                                  744121aead3dbab1493f40928e9c6926c88c440f

                                  SHA256

                                  f205ad0efb876122d811b76ff668c47dbf4f0e407995ed1db220738e246356ce

                                  SHA512

                                  85c972adc6a68d43cc6f15e69810804db3ab3aed530d2dc08f776c0e5ef2ba3bf74165e0d52c454b5bf7899a69eebfdca79dde9ab178ca752373cd394206c05f

                                • C:\Users\Admin\AppData\Local\Temp\A1D26E2\AFD7DF8CF0.tmp

                                  Filesize

                                  14.3MB

                                  MD5

                                  7740b91aa5877cd86117db93dc5b0426

                                  SHA1

                                  b02a401b86aaa41768a15e4f027dccb812341fb7

                                  SHA256

                                  44df3a987ad432ea7942d8923dd2a8e29f3204119274ace5b0c5181838557564

                                  SHA512

                                  88890d8956872c8369ed2b3ede2349ae7021a770182dc3904f1ed983ae006355067d294abd0c5d77fc40c20cbad9e33e76bb29fd4d778f11079926bbc58e810f

                                • memory/3312-76-0x0000000000CD0000-0x0000000001B44000-memory.dmp

                                  Filesize

                                  14.5MB

                                • memory/3312-3-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB

                                • memory/3312-78-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB

                                • memory/3312-47-0x0000000000CD0000-0x0000000001B44000-memory.dmp

                                  Filesize

                                  14.5MB

                                • memory/3312-49-0x0000000010000000-0x0000000010030000-memory.dmp

                                  Filesize

                                  192KB