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Analysis

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

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/12/2024, 01:54

General

  • Target

    2024-12-10_ee3579580b42ee99adb8e7c43b0a7c60_floxif_mafia.exe

  • Size

    2.4MB

  • MD5

    ee3579580b42ee99adb8e7c43b0a7c60

  • SHA1

    73e92b419e2f43cf1db9c2fd399c6ec2211303b5

  • SHA256

    63e1c181a47207dff537b57f00057fc2453b9bf31ab01d19ef2dacd9a42fa699

  • SHA512

    08b25b472dc3446083750081517016de365c254addec321d8fb9e94f5d767580763f744b018b35aae3511151d4123004c08f4a7f98d5cee0a1cd5a68a994f861

  • SSDEEP

    49152:2fuQ7AkqIxGrGYyZa/tgrYJUGfZC3wA6EylfwEaFW31qW:bQ7AfrlyutLxC3sEwwM3UW

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\2024-12-10_ee3579580b42ee99adb8e7c43b0a7c60_floxif_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-10_ee3579580b42ee99adb8e7c43b0a7c60_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:3972
    • C:\Windows\SysWOW64\arp.exe
      arp -a
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:3780
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.0.1 36-08-44-b1-a3-94
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4976
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.255.255 b5-66-10-d4-e4-70
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4616
    • C:\Windows\SysWOW64\arp.exe
      arp -s 136.243.76.170 1d-b5-05-6b-ee-7f
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:5048
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.22 66-48-97-3d-16-ad
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:5060
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.251 70-57-33-17-70-2b
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:1984
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.252 d1-37-02-0d-3f-c9
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:3408
    • C:\Windows\SysWOW64\arp.exe
      arp -s 239.255.255.250 a0-97-fc-f4-4c-06
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:5032
    • C:\Windows\SysWOW64\arp.exe
      arp -s 255.255.255.255 bd-95-13-29-23-26
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4328
    • 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:3032
    • 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:4544
    • C:\Windows\SysWOW64\arp.exe
      arp -d
      2⤵
      • System Location Discovery: System Language Discovery
      PID:928

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

    10b6318f7b08d4bdfb17510e831bc8e4

    SHA1

    9a63cc63c6c035ca8d51614e730b0dcd9184707a

    SHA256

    6acd195ffbd4a06a8b2d6008450bc44632177d75a50304c25e3dbe9983abb935

    SHA512

    5033274763631dba91ab898076d74e38bc694570ab4ccaecf91da94c4dc13ba307c3c1cc536943728a317aeeea57204487f6080429355e39cb4f5451b934c402

  • 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\LocalLow\Microsoft\CryptnetUrlCache\Content\3FE2BD01AB6BC312BF0DADE7F797388F_896832C6BC857CFAEA9E59E166B13E2C

    Filesize

    471B

    MD5

    cdafe188a8d6d5bd5f5e8d7edacce249

    SHA1

    d7349b2856ff0debe5c6ebaa5c70ec6cde1f0be0

    SHA256

    5a6c5428b2b871a913d08733a8c376106f12b2fce1dfe732b6fcdc43cd512ef2

    SHA512

    b7c4814f26ff3d82c4fcde190d4bc086c604571957d2a4dc92a228e3b8ce842b0a8c8690be79763063aebb3ee8d6bb660fd6724ba61dd5397cfc6b78366da1c4

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3FE2BD01AB6BC312BF0DADE7F797388F_896832C6BC857CFAEA9E59E166B13E2C

    Filesize

    398B

    MD5

    1af0e9b70c0ff5f913c940cccb99c215

    SHA1

    832a800d4231314949f75e55adf630bb4dadafeb

    SHA256

    aabc0fc6f6d4b41ddc782f23560906b24b139db027a3abf2cc24bfd1a1174a96

    SHA512

    1ac1a3ad0df51df7b0fa8e5404340de5d9e152d806e8fe45e9eff92ad442945aaac9ba1f3c4debdf4cad6d841861cd549c655a001a534c46d9edaf0a7b460a6f

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

    Filesize

    1.9MB

    MD5

    0618e9851ea4a522abeded8d40c2f19e

    SHA1

    c6772967fdf545e32d28f3b46e97aec5b9ff99f5

    SHA256

    506c374fbdf14420306e2da8d123c2138c2ceabd2046178317508a25949d3dc4

    SHA512

    b8c4816d81aa14646a3b690da76c0d33f59b7d419305638747503dba6bb84a63b906fe7d0ced59850ad25db37c1e0e6f3bd614a902f2f5ffb3d2bf74ec4e571f

  • memory/3972-4-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/3972-84-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/3972-87-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/3972-86-0x0000000000920000-0x0000000000B6A000-memory.dmp

    Filesize

    2.3MB

  • memory/3972-90-0x0000000000920000-0x0000000000B6A000-memory.dmp

    Filesize

    2.3MB

  • memory/3972-92-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/3972-7-0x0000000000921000-0x0000000000922000-memory.dmp

    Filesize

    4KB

  • memory/4544-93-0x0000000073970000-0x00000000739E8000-memory.dmp

    Filesize

    480KB

  • memory/4544-100-0x0000000073970000-0x00000000739E8000-memory.dmp

    Filesize

    480KB

  • memory/4544-102-0x0000000073970000-0x00000000739E8000-memory.dmp

    Filesize

    480KB

  • memory/4544-110-0x0000000073970000-0x00000000739E8000-memory.dmp

    Filesize

    480KB

  • memory/4544-111-0x0000000073970000-0x00000000739E8000-memory.dmp

    Filesize

    480KB