Analysis

  • max time kernel
    145s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-12-2024 01:27

General

  • Target

    2024-12-29_f61508b573520d0cccef206f94edc3d2_floxif_mafia.exe

  • Size

    2.4MB

  • MD5

    f61508b573520d0cccef206f94edc3d2

  • SHA1

    85bc43d0a04652acf03194738506cef1706b11b8

  • SHA256

    e188755c259c93081c1717fc4603ba3ce1f9faa503d44173cb4b61041a3e3bea

  • SHA512

    792373752ba4f55a9d9e97f25701a366a9dcd5a887811c6ca4ca05cbb6c063828243d84359a37c5f8cf204fe4b9953a3a9ef97e36bce57411e125aadef82c67b

  • SSDEEP

    49152:2Ouv7AkqIxGrGYyZa/tgrYJUGfZC3wA6EylfwEaFW31qC:gv7AfrlyutLxC3sEwwM3UC

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\2024-12-29_f61508b573520d0cccef206f94edc3d2_floxif_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-29_f61508b573520d0cccef206f94edc3d2_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:1864
    • C:\Windows\SysWOW64\arp.exe
      arp -a
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2028
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.0.1 9c-bf-d9-69-24-84
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2252
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.255.255 51-dc-83-7f-b8-c6
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4224
    • C:\Windows\SysWOW64\arp.exe
      arp -s 37.27.61.185 20-77-65-f0-09-64
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2908
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.22 7b-a8-d3-10-9d-fa
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4404
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.251 6a-c9-91-a6-d9-f7
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4564
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.252 e4-7a-51-9d-f1-1d
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4048
    • C:\Windows\SysWOW64\arp.exe
      arp -s 239.255.255.250 6f-9e-df-70-43-e8
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:348
    • C:\Windows\SysWOW64\arp.exe
      arp -s 255.255.255.255 03-38-56-9a-b2-40
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:3864
    • 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:3048
    • 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:1624
    • C:\Windows\SysWOW64\arp.exe
      arp -d
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4640

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

    14feb16e7d80e86e14403d8fb07130e3

    SHA1

    c1df6d4f4b1eaeda37a95b37b2d4a4053fd479d8

    SHA256

    9010c8908c51e55376c5ef0d03f732ddf94fcee8714d5b7337332901d1401a94

    SHA512

    e11d9554cf1fdd130a815229afe5f143f7310924a88b59d95d32ac8d601d4c39127d9424f2b1089c4ba0af3a749bf0cce37d23371447defd1ddc84fba7654e8e

  • 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/1624-101-0x0000000072D80000-0x0000000072DF8000-memory.dmp

    Filesize

    480KB

  • memory/1624-112-0x0000000072D80000-0x0000000072DF8000-memory.dmp

    Filesize

    480KB

  • memory/1624-111-0x0000000072D80000-0x0000000072DF8000-memory.dmp

    Filesize

    480KB

  • memory/1624-103-0x0000000072D80000-0x0000000072DF8000-memory.dmp

    Filesize

    480KB

  • memory/1624-102-0x0000000072D80000-0x0000000072DF8000-memory.dmp

    Filesize

    480KB

  • memory/1624-90-0x0000000072D80000-0x0000000072DF8000-memory.dmp

    Filesize

    480KB

  • memory/1864-84-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/1864-91-0x0000000000190000-0x00000000003DA000-memory.dmp

    Filesize

    2.3MB

  • memory/1864-93-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/1864-85-0x0000000000190000-0x00000000003DA000-memory.dmp

    Filesize

    2.3MB

  • memory/1864-86-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/1864-7-0x0000000000191000-0x0000000000192000-memory.dmp

    Filesize

    4KB

  • memory/1864-4-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB