Analysis

  • max time kernel
    150s
  • 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 00:30

General

  • Target

    2024-12-25_be27d40664ea5b411f27cf55a53721fc_floxif_mafia.exe

  • Size

    2.4MB

  • MD5

    be27d40664ea5b411f27cf55a53721fc

  • SHA1

    5e8ef1ba8a976b130503ded21dd29ae1b4d48d29

  • SHA256

    3a2855c405fbe6ce39e67160fa245d60c13aef6b8d641ba059c1accbcb35656c

  • SHA512

    7b40e163069075e460a32b8fc6fb7a85e027fec9a5161c18ad48063b48c9ecb02f9ea2cfe475cdc4eba39a469519f8b3549113916583f1df208a0b0094bce76c

  • SSDEEP

    49152:2IuE7nkqIxGrGYyZa/tgrYJUGfZC3wA6EylfwEaFW31qV:KE7nfrlyutLxC3sEwwM3UV

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_be27d40664ea5b411f27cf55a53721fc_floxif_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-25_be27d40664ea5b411f27cf55a53721fc_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:3000
    • C:\Windows\SysWOW64\arp.exe
      arp -a
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:3332
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.0.1 ba-48-05-f2-16-6d
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4592
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.255.255 eb-4d-23-bd-41-a8
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4744
    • C:\Windows\SysWOW64\arp.exe
      arp -s 37.27.61.184 ed-00-d3-f8-bb-30
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4652
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.22 55-74-da-54-dd-b6
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4800
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.251 f2-42-83-1f-4e-18
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4948
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.252 47-8f-c3-5a-7f-09
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4732
    • C:\Windows\SysWOW64\arp.exe
      arp -s 239.255.255.250 ed-11-0f-f9-c2-39
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:3260
    • C:\Windows\SysWOW64\arp.exe
      arp -s 255.255.255.255 44-58-6f-ad-d8-a1
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4100
    • 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:4296
    • 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:4352
    • C:\Windows\SysWOW64\arp.exe
      arp -d
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4200

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

    f92afc0be1c69fc2387e2457047e24ef

    SHA1

    cca5815e9257bb83c2de4d0c84e3c5d70ca721ea

    SHA256

    54ccee3efd380b0c8c23eb88404b4f9e73f65a3a5c27719f742fb824e07a477c

    SHA512

    db8c372907ed4f98846e446c9d829ba111da25289a1be452211fee250cc73e9948a752b9941d31c129717febac9926a15b4b2adaf24c57266d4fa59b494608f1

  • 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/3000-99-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/3000-93-0x0000000000AA0000-0x0000000000CEA000-memory.dmp

    Filesize

    2.3MB

  • memory/3000-7-0x0000000000AA1000-0x0000000000AA2000-memory.dmp

    Filesize

    4KB

  • memory/3000-97-0x0000000000AA0000-0x0000000000CEA000-memory.dmp

    Filesize

    2.3MB

  • memory/3000-4-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/3000-91-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/3000-94-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/4296-64-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/4296-20-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/4352-76-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/4352-101-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/4352-100-0x00000000736D0000-0x0000000073748000-memory.dmp

    Filesize

    480KB

  • memory/4352-111-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/4352-110-0x00000000736D0000-0x0000000073748000-memory.dmp

    Filesize

    480KB

  • memory/4352-112-0x00000000736D0000-0x0000000073748000-memory.dmp

    Filesize

    480KB

  • memory/4352-114-0x00000000736D0000-0x0000000073748000-memory.dmp

    Filesize

    480KB

  • memory/4352-130-0x00000000736D0000-0x0000000073748000-memory.dmp

    Filesize

    480KB

  • memory/4352-132-0x00000000736D0000-0x0000000073748000-memory.dmp

    Filesize

    480KB