Analysis

  • max time kernel
    104s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250313-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250313-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/04/2025, 23:21

General

  • Target

    2025-04-03_38058339fdd2912c35147a02d93fd036_black-basta_floxif_luca-stealer_remcos_rhadamanthys.exe

  • Size

    16.8MB

  • MD5

    38058339fdd2912c35147a02d93fd036

  • SHA1

    7ce1111ba299613a6873d0427caca1979bd69504

  • SHA256

    372362b50557bf678a924d340f17399f8595a78ef51bba706b04571718b1c851

  • SHA512

    8604e3078f41a48c83d4c0bd422aca935fb6e3012cd86d7d68251d04858ffd25ed2b3da92069a711f52f321f977f1bec5a9977eb81c9324ba867e0bd5ce8e6d1

  • SSDEEP

    393216:KUfoCkhfO/zFXGW/F/P9wXiXzThtaio4JfRs9:pRkdObGXYzt4kRk

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://mrodevicemgr.officeapps.live.com/mrodevicemgrsvc/api/v2/C2RReleaseData

Signatures

  • Floxif family
  • Floxif, Floodfix

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

  • Detects Floxif payload 1 IoCs
  • Blocklisted process makes network request 1 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • UPX packed file 5 IoCs

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

  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-04-03_38058339fdd2912c35147a02d93fd036_black-basta_floxif_luca-stealer_remcos_rhadamanthys.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-04-03_38058339fdd2912c35147a02d93fd036_black-basta_floxif_luca-stealer_remcos_rhadamanthys.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5468
    • C:\Windows\system32\cmd.exe
      "C:\Windows\Sysnative\cmd.exe" /c WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionPath="C:\Users\Admin\AppData\Local\Temp\2025-04-03_38058339fdd2912c35147a02d93fd036_black-basta_floxif_luca-stealer_remcos_rhadamanthys.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5244
      • C:\Windows\System32\Wbem\WMIC.exe
        WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionPath="C:\Users\Admin\AppData\Local\Temp\2025-04-03_38058339fdd2912c35147a02d93fd036_black-basta_floxif_luca-stealer_remcos_rhadamanthys.exe"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:5816
    • C:\Windows\system32\reg.exe
      "C:\Windows\Sysnative\reg.exe" add "HKLM\SOFTWARE\Microsoft\Windows Script Host\Settings" /v Enabled /t REG_DWORD /d 1 /f
      2⤵
        PID:2344
      • C:\Windows\system32\cmd.exe
        "C:\Windows\Sysnative\cmd.exe" /D /c files.dat -y -pkmsauto
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5288
        • C:\Users\Admin\AppData\Local\Temp\files\files.dat
          files.dat -y -pkmsauto
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:1888
      • C:\Windows\system32\cmd.exe
        "C:\Windows\Sysnative\cmd.exe" /c WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionPath="C:\Users\Admin\AppData\Local\Temp\files"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3492
        • C:\Windows\System32\Wbem\WMIC.exe
          WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionPath="C:\Users\Admin\AppData\Local\Temp\files"
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4512
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" -nop -command "& { (New-Object Net.WebClient).DownloadFile('https://mrodevicemgr.officeapps.live.com/mrodevicemgrsvc/api/v2/C2RReleaseData', 'C:\Users\Admin\AppData\Local\Temp\ver.txt') }"
        2⤵
        • Blocklisted process makes network request
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:4764
      • C:\Users\Admin\AppData\Local\Temp\rld15511.exe
        "C:\Users\Admin\AppData\Local\Temp\rld15511.exe" "C:\Users\Admin\AppData\Local\Temp\2025-04-03_38058339fdd2912c35147a02d93fd036_black-basta_floxif_luca-stealer_remcos_rhadamanthys.exe" 1000
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5564
        • C:\Users\Admin\AppData\Local\Temp\2025-04-03_38058339fdd2912c35147a02d93fd036_black-basta_floxif_luca-stealer_remcos_rhadamanthys.exe
          "C:\Users\Admin\AppData\Local\Temp\2025-04-03_38058339fdd2912c35147a02d93fd036_black-basta_floxif_luca-stealer_remcos_rhadamanthys.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:5760
          • C:\Windows\system32\cmd.exe
            "C:\Windows\Sysnative\cmd.exe" /c WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionPath="C:\Users\Admin\AppData\Local\Temp\2025-04-03_38058339fdd2912c35147a02d93fd036_black-basta_floxif_luca-stealer_remcos_rhadamanthys.exe"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:5960
            • C:\Windows\System32\Wbem\WMIC.exe
              WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionPath="C:\Users\Admin\AppData\Local\Temp\2025-04-03_38058339fdd2912c35147a02d93fd036_black-basta_floxif_luca-stealer_remcos_rhadamanthys.exe"
              5⤵
                PID:2244
            • C:\Windows\system32\reg.exe
              "C:\Windows\Sysnative\reg.exe" add "HKLM\SOFTWARE\Microsoft\Windows Script Host\Settings" /v Enabled /t REG_DWORD /d 1 /f
              4⤵
                PID:5796
              • C:\Windows\system32\cmd.exe
                "C:\Windows\Sysnative\cmd.exe" /c WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionPath="C:\Users\Admin\AppData\Local\Temp\files"
                4⤵
                • Suspicious use of WriteProcessMemory
                PID:3408
                • C:\Windows\System32\Wbem\WMIC.exe
                  WMIC /NAMESPACE:\\root\Microsoft\Windows\Defender PATH MSFT_MpPreference call Add ExclusionPath="C:\Users\Admin\AppData\Local\Temp\files"
                  5⤵
                    PID:4816
                • C:\Users\Admin\AppData\Local\Temp\oinstrun.exe
                  "C:\Users\Admin\AppData\Local\Temp\oinstrun.exe" "C:\Users\Admin\AppData\Local\Temp\2025-04-03_38058339fdd2912c35147a02d93fd036_black-basta_floxif_luca-stealer_remcos_rhadamanthys.exe"
                  4⤵
                  • Executes dropped EXE
                  • Suspicious behavior: EnumeratesProcesses
                  PID:2264
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\SelfD30459.bat
                3⤵
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:2120
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 1 localhost
                  4⤵
                  • System Location Discovery: System Language Discovery
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:1696
                • C:\Windows\SysWOW64\PING.EXE
                  ping -n 1 localhost
                  4⤵
                  • System Location Discovery: System Language Discovery
                  • System Network Configuration Discovery: Internet Connection Discovery
                  • Runs ping.exe
                  PID:1892
          • C:\Windows\system32\AUDIODG.EXE
            C:\Windows\system32\AUDIODG.EXE 0x4b4 0x304
            1⤵
              PID:1544

            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\Temp\2025-04-03_38058339fdd2912c35147a02d93fd036_black-basta_floxif_luca-stealer_remcos_rhadamanthys.exe

              Filesize

              16.8MB

              MD5

              38058339fdd2912c35147a02d93fd036

              SHA1

              7ce1111ba299613a6873d0427caca1979bd69504

              SHA256

              372362b50557bf678a924d340f17399f8595a78ef51bba706b04571718b1c851

              SHA512

              8604e3078f41a48c83d4c0bd422aca935fb6e3012cd86d7d68251d04858ffd25ed2b3da92069a711f52f321f977f1bec5a9977eb81c9324ba867e0bd5ce8e6d1

            • C:\Users\Admin\AppData\Local\Temp\A1D26E2\3D9514F8155C.tmp

              Filesize

              16.7MB

              MD5

              9b3fb0ecd6f386cd5de681bb94aa5b41

              SHA1

              bc056e85655557d947b44eee9fcc07669e7caa08

              SHA256

              9aa6753d204409cde394b1c9dcfe8054be04166843f63f8847710861de9508be

              SHA512

              330325023064ffb7541a104c222a22d15b9f9a257f4f2658fcb564b1257d7ad03e568adf97e7f16c2a5cb4de6ed43f823371ca6ab43acf47b8b0975e1948422e

            • C:\Users\Admin\AppData\Local\Temp\SelfD30459.bat

              Filesize

              157B

              MD5

              f3b2d9bb9dbe16a9a7b9235582014789

              SHA1

              ba17acad585ca2640a154290cfffc3b86db46bf2

              SHA256

              2e7b2d4cfc5083001e8183ae5ef0b60ec49e4b6b629c43bb41b2e36ee253311c

              SHA512

              0123daed25bde3e8a15ed0f36ec99688916b68d7448d91a1a985cba327f232be18a7940ee1c66413d1dbe507d9d52131ba1f510e995d9a728a4641d6579c102a

            • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vx0zabch.ndm.ps1

              Filesize

              60B

              MD5

              d17fe0a3f47be24a6453e9ef58c94641

              SHA1

              6ab83620379fc69f80c0242105ddffd7d98d5d9d

              SHA256

              96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

              SHA512

              5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

            • C:\Users\Admin\AppData\Local\Temp\files\configure.xml

              Filesize

              1KB

              MD5

              2a798f1fe71e7e78983e1b81f29e627b

              SHA1

              36674d34cce4a5afccaac4e339ac876f1bce2ca8

              SHA256

              f2980edd3fd3ed28f520150ba1dfb4b43fa2d2eb4b9f6ebc9634f53c99478f37

              SHA512

              bfc17e6b080b4faccd915795a4bee083112e1d7f67fe6bc455a2abc47676dcfca75002c7b0c25cd992c1e6c4dd9534c170aad58a29ad2441cf37c4dbaf13f5f6

            • C:\Users\Admin\AppData\Local\Temp\files\files.dat

              Filesize

              765KB

              MD5

              bb5569b15d68c10b7ff2d96b45825120

              SHA1

              d6d2ed450aae4552f550f59bffe3dd42d8377835

              SHA256

              4e3b13b56bec0e41778e6506430282bbbd75ccaa600fd4b645ce37dd95b44c8e

              SHA512

              640a9ae2d40c272638485d37fad4ed83c9c215ce60a0bd3d50db9f033aa79d4c7fc276d018b05f0b1d8446f5e84a7350c857ee8097c05a472c26bfb446038957

            • C:\Users\Admin\AppData\Local\Temp\oinstrun.exe

              Filesize

              14KB

              MD5

              32973232138fc6b30d913167096c059d

              SHA1

              d6a7cb95d5525ea3d7286749663e12c1addb3104

              SHA256

              4a01c55f4727b3771c2672421aa2c5c20534ad0530449ed168a16a3d33345d3d

              SHA512

              ce0ca843705f7059bad14260a48647797a6cb2d84c162aa943eb090a7d18f708a3403d94f92fbc67c1b1216f941bf591f358e35fef76db34125f37595e256b9f

            • C:\Users\Admin\AppData\Local\Temp\rld15511.exe

              Filesize

              16KB

              MD5

              fc8ec75b7b5f3a2be9fdc67ee8808afa

              SHA1

              e5723567f6f3d12c2eaea3d07955cf5a259c8a8f

              SHA256

              03382bd8037a9cf6905c87b98b6768bd93fec22faf2f4092d81ac970703ea14f

              SHA512

              c83ee781775fef4f65244b108bd9ac88643340375b0a2880af9c5d44259ea2f416130c01da0279eb2683988fdf7fc1f8a91e5b013bef28ceb3a086da5ac8bc2a

            • C:\Users\Admin\AppData\Local\Temp\ver.txt

              Filesize

              55KB

              MD5

              a061802f11d659bc2ad65a8489dfce7c

              SHA1

              c2413dacbc043b9da3cca854ebbacc7023c9975c

              SHA256

              3ec410fda561f1be02b09a561e431c1e4648c7f46de2318b1efa21396d101de0

              SHA512

              01082c6e1cd05cf9601908c6f38bf7e76512bfe0cb371028891c7eb3742e321009798a10d26adecda53bb4cccfbf9c647f0b7c6ef5c5b8e5b71f9220ea16bbce

            • memory/4764-36-0x0000000004B00000-0x0000000004B22000-memory.dmp

              Filesize

              136KB

            • memory/4764-35-0x0000000004FC0000-0x00000000055E8000-memory.dmp

              Filesize

              6.2MB

            • memory/4764-54-0x0000000005AF0000-0x0000000005B3C000-memory.dmp

              Filesize

              304KB

            • memory/4764-55-0x0000000007100000-0x000000000777A000-memory.dmp

              Filesize

              6.5MB

            • memory/4764-56-0x0000000005FC0000-0x0000000005FDA000-memory.dmp

              Filesize

              104KB

            • memory/4764-48-0x00000000056F0000-0x0000000005A44000-memory.dmp

              Filesize

              3.3MB

            • memory/4764-38-0x0000000004E80000-0x0000000004EE6000-memory.dmp

              Filesize

              408KB

            • memory/4764-34-0x0000000000B90000-0x0000000000BC6000-memory.dmp

              Filesize

              216KB

            • memory/4764-37-0x0000000004DA0000-0x0000000004E06000-memory.dmp

              Filesize

              408KB

            • memory/4764-53-0x0000000005AB0000-0x0000000005ACE000-memory.dmp

              Filesize

              120KB

            • memory/5468-76-0x0000000010000000-0x0000000010030000-memory.dmp

              Filesize

              192KB

            • memory/5468-7-0x000000000054D000-0x0000000000550000-memory.dmp

              Filesize

              12KB

            • memory/5468-3-0x0000000010000000-0x0000000010030000-memory.dmp

              Filesize

              192KB

            • memory/5760-82-0x0000000010000000-0x0000000010030000-memory.dmp

              Filesize

              192KB

            • memory/5760-97-0x0000000010000000-0x0000000010030000-memory.dmp

              Filesize

              192KB