Analysis

  • max time kernel
    145s
  • max time network
    149s
  • 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 18:34

General

  • Target

    2024-12-25_f07cb7553874ba1ea3425c82b3d09e29_floxif_mafia.exe

  • Size

    2.4MB

  • MD5

    f07cb7553874ba1ea3425c82b3d09e29

  • SHA1

    c9dc4cc08c4a96a916297b80b4a070334bf9a647

  • SHA256

    3a305da79f660bdca83a12b0a91e15bb701ddcc96f448f34cedd81994de47843

  • SHA512

    7f4e470331e5d9367d0142fcc2b2222bb9bcd99df57965da4f72588caa9be6299e38ae43f790a80499d06ce18478d012f2f72a3d5bd3d108887359bfc55e775f

  • SSDEEP

    49152:2WuE7AcqIxGrGYyZa/tgrYJUGfZC3wA6EylfwEaFW31qA:IE7AHrlyutLxC3sEwwM3UA

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
  • Event Triggered Execution: AppInit DLLs 1 TTPs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

  • 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 5 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 10 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 3 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-12-25_f07cb7553874ba1ea3425c82b3d09e29_floxif_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-25_f07cb7553874ba1ea3425c82b3d09e29_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:948
    • C:\Windows\SysWOW64\arp.exe
      arp -a
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4940
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.0.1 b3-48-02-a9-d2-c9
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4832
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.255.255 8a-6e-bf-b2-33-2e
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2288
    • C:\Windows\SysWOW64\arp.exe
      arp -s 136.243.69.123 1f-1a-7f-c5-1b-aa
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:1580
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.22 51-21-63-d4-3c-01
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:1828
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.251 aa-8f-a9-5d-1d-75
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4744
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.252 07-ee-6a-07-bd-66
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2480
    • C:\Windows\SysWOW64\arp.exe
      arp -s 239.255.255.250 bb-68-ba-6b-d1-bb
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4200
    • C:\Windows\SysWOW64\arp.exe
      arp -s 255.255.255.255 a4-3d-00-cc-b0-18
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4892
    • C:\Users\Admin\AppData\Local\Temp\minidownload.exe
      "C:\Users\Admin\AppData\Local\Temp\minidownload.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:1780
    • 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
      • Suspicious use of AdjustPrivilegeToken
      PID:880
    • C:\Windows\SysWOW64\arp.exe
      arp -d
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3356

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

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

    7c7a58982f813d801be7215695042484

    SHA1

    13b9ef905b2dbe143299e0ad17b1fe3dc569d89f

    SHA256

    7822179d5e04fcff7cb6ead33e1fcafbd10414659106cc68bd485f154cd250f9

    SHA512

    77295546e27dd992ece31972eb24e6eb8a5031ae5d33e0c8f90d68d5ba9b5c25d22732726f3ed5ad45395157a41fab87bfdb4f48f05c83faea4d51de663154e1

  • 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/880-103-0x0000000073640000-0x00000000736B8000-memory.dmp

    Filesize

    480KB

  • memory/880-99-0x0000000073640000-0x00000000736B8000-memory.dmp

    Filesize

    480KB

  • memory/880-105-0x0000000073640000-0x00000000736B8000-memory.dmp

    Filesize

    480KB

  • memory/880-75-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/880-123-0x0000000073640000-0x00000000736B8000-memory.dmp

    Filesize

    480KB

  • memory/880-125-0x0000000073640000-0x00000000736B8000-memory.dmp

    Filesize

    480KB

  • memory/880-104-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/880-100-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/948-83-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/948-98-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/948-96-0x00000000001B0000-0x00000000003FA000-memory.dmp

    Filesize

    2.3MB

  • memory/948-91-0x00000000001B0000-0x00000000003FA000-memory.dmp

    Filesize

    2.3MB

  • memory/948-92-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/948-6-0x00000000001B1000-0x00000000001B2000-memory.dmp

    Filesize

    4KB

  • memory/948-4-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/1780-63-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/1780-21-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB