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Analysis

  • max time kernel
    144s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/12/2024, 00:24

General

  • Target

    2024-12-25_4354123d8c23cc41c81b5c3f57300c17_floxif_mafia.exe

  • Size

    2.4MB

  • MD5

    4354123d8c23cc41c81b5c3f57300c17

  • SHA1

    71a631dbfebd7ac29c9eae355b1086d7d55663c6

  • SHA256

    adf8309a1747afc6cfcbec33d3bebd39d5b57123bf1708de2561c1ed141a59cc

  • SHA512

    ef362e18bd9c7ee41b9c5c4fc3ee1dcf93197c97274a1d8c71e878e867dd5d4a0bf19e66ade43e7e1cd9069a7a1caf29cb3f1105afb7142849e80a75c8044a30

  • SSDEEP

    49152:2PuE7AbqIxGrGYyZa/tgrYJUGfZC3wA6EylfwEaFW31qS:PE7A+rlyutLxC3sEwwM3US

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
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Network Service Discovery 1 TTPs 9 IoCs

    Attempt to gather information on host's network.

  • Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • UPX packed file 5 IoCs

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

  • Drops file in Program Files directory 46 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 13 IoCs

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

  • NSIS installer 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-12-25_4354123d8c23cc41c81b5c3f57300c17_floxif_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-25_4354123d8c23cc41c81b5c3f57300c17_floxif_mafia.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Enumerates connected drives
    • Writes to the Master Boot Record (MBR)
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:384
    • C:\Windows\SysWOW64\arp.exe
      arp -a
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4736
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.0.1 35-86-73-f9-9c-cd
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4604
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.255.255 15-68-6b-d3-5d-22
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4952
    • C:\Windows\SysWOW64\arp.exe
      arp -s 49.12.169.207 00-24-97-8f-2d-55
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4392
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.22 ea-f5-43-65-32-99
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:5080
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.251 40-4a-1a-f4-b8-1f
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:1620
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.252 af-00-e6-29-5e-7c
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:5000
    • C:\Windows\SysWOW64\arp.exe
      arp -s 239.255.255.250 50-2c-d0-af-1f-da
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:5060
    • C:\Windows\SysWOW64\arp.exe
      arp -s 255.255.255.255 73-ff-91-b0-ea-ec
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4916
    • C:\Users\Admin\AppData\Local\Temp\minidownload.exe
      "C:\Users\Admin\AppData\Local\Temp\minidownload.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      PID:4624
    • C:\Program Files (x86)\SogouSoftware\SogouSoftware.exe
      "C:\Program Files (x86)\SogouSoftware\SogouSoftware.exe" /Loader /DownLoad?status=true&softurl=https%3A%2F%2Fxiazai.sogou.com%2Fcomm%2Fredir%3Fsoftdown%3D1%26u%3DG30HdQ8G4ngDpbEHfW1gEXYhwD6lzpDc8HlTAHx7scbrxDthotkHK0HexvlOWvJbJd76eqnPU0MQPeaLH3gS2w..%26pcid%3D-2241203717467645359%26fr%3Dxiazai%26source%3Dxixi%26filename%3Dpdfwjt.zip&iconurl=https%3A%2F%2Fpic.cr173.com%2Fup%2F2014-4%2F201449152326.jpg&softname=PDF%E8%BD%AC%E6%8D%A2%E9%80%9A&softsize=19.05MB
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Writes to the Master Boot Record (MBR)
      • System Location Discovery: System Language Discovery
      PID:2876
    • C:\Windows\SysWOW64\arp.exe
      arp -d
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3860

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\SogouSoftware\SogouSoftware.exe

    Filesize

    232KB

    MD5

    0bc2d003fcfe3fa65f4c3ba7a015fa41

    SHA1

    72ed85bc1c57259b4f2ed36d16ce3fed4e30607c

    SHA256

    388069590fb9569b6c498f941d0565416cb52fc803648ee21b8c59917c63eb4b

    SHA512

    ae8d83e6ca21ee9b0d5e5845fac3a4dc01c6038243da36b4360b2f42763478265cdafc89072c47672b9738de1930e5e5191e2bf91715055cbd16a949d313ff24

  • C:\Program Files (x86)\SogouSoftware\SogouSoftwareLoader.dll

    Filesize

    450KB

    MD5

    b1ce2dba9515e144908aa34ac77f5a46

    SHA1

    0a3e601eeba273a16d815c5e59793eb73db9daad

    SHA256

    5a7349e46f16ec394af8575b666c132c010bacaa2c59da472b842ffeccc5623f

    SHA512

    d0a78b5de9126b8126b531fb8f72ae375aac898930dccd8a61f173c28470895daab56b368c34a5925020dfdc642785651445967904d8756bb1ce7c1d2f95525a

  • C:\Program Files (x86)\SogouSoftware\SogouSoftwareLoader.dll.tmp

    Filesize

    531KB

    MD5

    c1039b4d399ae58fd01835e633268a31

    SHA1

    1bfd0fa0de42011c0183b90596602f2554147868

    SHA256

    ce375c9a22aa06152ce28985e4310cdcb0b95185d200d056448c8ae757ce8a85

    SHA512

    8e2179c0cc7fd39c36daad22077590dbbc6e5fad877d0d9b7faf55aa06715727b22f91209cadb652033049022d36ee47682ef433c181e0ae6d13688ec5f400c7

  • C:\Program Files (x86)\SogouSoftware\download\download\.svn\prop-base\atl71.dll.svn-base

    Filesize

    53B

    MD5

    113136892f2137aa0116093a524ade0b

    SHA1

    a0284943f8ddfe69ceec90833e66d96bdf4a97f0

    SHA256

    ebbf7e8800c3446bc3a195fa53573bde1073b0bf7581a614372f1391a9286d02

    SHA512

    d3201cc19ae702a9813aa8bc39612ebaa48138903e9ede64dcadff213691f6e711876aa4fa083887c545325d5d8bf70649523c528090542459f2b01697180e99

  • C:\Program Files\Common Files\System\symsrv.dll

    Filesize

    71KB

    MD5

    4fcd7574537cebec8e75b4e646996643

    SHA1

    efa59bb9050fb656b90d5d40c942fb2a304f2a8b

    SHA256

    8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

    SHA512

    7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

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

    Filesize

    1.9MB

    MD5

    0618e9851ea4a522abeded8d40c2f19e

    SHA1

    c6772967fdf545e32d28f3b46e97aec5b9ff99f5

    SHA256

    506c374fbdf14420306e2da8d123c2138c2ceabd2046178317508a25949d3dc4

    SHA512

    b8c4816d81aa14646a3b690da76c0d33f59b7d419305638747503dba6bb84a63b906fe7d0ced59850ad25db37c1e0e6f3bd614a902f2f5ffb3d2bf74ec4e571f

  • memory/384-84-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/384-7-0x00000000000F1000-0x00000000000F2000-memory.dmp

    Filesize

    4KB

  • memory/384-4-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/384-87-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/384-86-0x00000000000F0000-0x000000000033A000-memory.dmp

    Filesize

    2.3MB

  • memory/384-90-0x00000000000F0000-0x000000000033A000-memory.dmp

    Filesize

    2.3MB

  • memory/384-92-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/2876-93-0x0000000073740000-0x00000000737B8000-memory.dmp

    Filesize

    480KB

  • memory/2876-101-0x0000000073740000-0x00000000737B8000-memory.dmp

    Filesize

    480KB

  • memory/2876-103-0x0000000073740000-0x00000000737B8000-memory.dmp

    Filesize

    480KB

  • memory/2876-111-0x0000000073740000-0x00000000737B8000-memory.dmp

    Filesize

    480KB

  • memory/2876-112-0x0000000073740000-0x00000000737B8000-memory.dmp

    Filesize

    480KB