Analysis

  • max time kernel
    145s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-12-2024 18:35

General

  • Target

    2024-12-31_c2d5eec74b518be100bb2aaa80338f5a_floxif_mafia.exe

  • Size

    2.4MB

  • MD5

    c2d5eec74b518be100bb2aaa80338f5a

  • SHA1

    7dd1856a1c9bbf39e107e1e71f2a2f59f5e896a5

  • SHA256

    28efd7374255c12fc34eb93dca5e1ce4d1ff8b3632721512ce1c0702f7934181

  • SHA512

    61a2cdfe43efcdae8c19e016513b32c806775da910d097e6e7fa019fed7d5feef896f6504745e1fbd924140d25cb3fe70ae1922497b8d960b2c091172a25aa71

  • SSDEEP

    49152:2LuE7A5qIxGrGYyZa/tgrYJUGfZC3wA6EylfwEaFW31q8:bE7AcrlyutLxC3sEwwM3U8

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\2024-12-31_c2d5eec74b518be100bb2aaa80338f5a_floxif_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-31_c2d5eec74b518be100bb2aaa80338f5a_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:4440
    • C:\Windows\SysWOW64\arp.exe
      arp -a
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:1484
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.0.1 19-f5-d9-ce-13-d3
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:1324
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.255.255 86-e6-c5-84-6e-b7
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:876
    • C:\Windows\SysWOW64\arp.exe
      arp -s 37.27.61.183 69-8b-0f-3c-11-87
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:1376
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.22 90-13-bb-45-e7-4a
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:3028
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.251 d4-1b-2b-13-ce-79
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4280
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.252 2a-cf-42-b3-a4-80
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2216
    • C:\Windows\SysWOW64\arp.exe
      arp -s 239.255.255.250 1b-f2-e2-7a-df-06
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:5032
    • C:\Windows\SysWOW64\arp.exe
      arp -s 255.255.255.255 46-2f-a3-9a-dc-01
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4312
    • 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:4256
    • 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:3624
    • C:\Windows\SysWOW64\arp.exe
      arp -d
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2196

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

    909e4818d159492d92ff63c1075346b8

    SHA1

    a2fbf523fb220876249dedb2a84d651734f6ae0f

    SHA256

    63e5075dc25867dd87d67e829fc9ab60110eb7c842bcbb9016829dec76b919d7

    SHA512

    b6412950128eccb886f52322d1f3757c69a832e6a90346dbeb2b602d2333edc095cdec7051642ad6499b994b5dff7b79c662d8c8642d72e1453aa1ef187aed29

  • 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/3624-102-0x00000000739C0000-0x0000000073A38000-memory.dmp

    Filesize

    480KB

  • memory/3624-105-0x00000000739C0000-0x0000000073A38000-memory.dmp

    Filesize

    480KB

  • memory/3624-112-0x00000000739C0000-0x0000000073A38000-memory.dmp

    Filesize

    480KB

  • memory/3624-111-0x00000000739C0000-0x0000000073A38000-memory.dmp

    Filesize

    480KB

  • memory/3624-107-0x00000000739C0000-0x0000000073A38000-memory.dmp

    Filesize

    480KB

  • memory/3624-94-0x00000000739C0000-0x0000000073A38000-memory.dmp

    Filesize

    480KB

  • memory/3624-92-0x00000000739C0000-0x0000000073A38000-memory.dmp

    Filesize

    480KB

  • memory/4440-89-0x00000000007A0000-0x00000000009EA000-memory.dmp

    Filesize

    2.3MB

  • memory/4440-91-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/4440-4-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/4440-7-0x00000000007A1000-0x00000000007A2000-memory.dmp

    Filesize

    4KB

  • memory/4440-79-0x00000000007A0000-0x00000000009EA000-memory.dmp

    Filesize

    2.3MB

  • memory/4440-80-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/4440-78-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB