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 01:28

General

  • Target

    2024-12-10_24732662ec8ca3217c4dea0fcc15b262_floxif_mafia.exe

  • Size

    2.4MB

  • MD5

    24732662ec8ca3217c4dea0fcc15b262

  • SHA1

    cf3056426b251b1dfd871e26e0a60842eb230faf

  • SHA256

    8bf46fefec222f0cc600ae994193f50add24084cb2923cd598865a4396c4e41d

  • SHA512

    2716294fd9e16ca57ba36c0e8402cc95c87fe8c5db1c4e7c10c3916ed43d12964a661c938164023e9052581f3f20e13dc2a01b239e95e608bbe332532332cff7

  • SSDEEP

    49152:ISuE7AkqIxGrGYyZa/tgrYJUGfZC3wA6EylfwEaFW31qvT:GE7AfrlyutLxC3sEwwM3UvT

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 6 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\2024-12-10_24732662ec8ca3217c4dea0fcc15b262_floxif_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-10_24732662ec8ca3217c4dea0fcc15b262_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:1320
    • C:\Windows\SysWOW64\arp.exe
      arp -a
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2848
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.0.1 4a-09-ac-f3-f3-de
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:1100
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.255.255 7f-2c-8b-10-6e-b0
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:3656
    • C:\Windows\SysWOW64\arp.exe
      arp -s 136.243.76.173 ee-be-a8-13-2c-91
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4852
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.22 53-dc-be-0c-48-35
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:1076
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.251 34-3b-9b-5c-d9-2b
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2104
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.252 c0-b3-1b-3d-4e-eb
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4100
    • C:\Windows\SysWOW64\arp.exe
      arp -s 239.255.255.250 16-fc-6b-26-18-c7
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:3644
    • C:\Windows\SysWOW64\arp.exe
      arp -s 255.255.255.255 f1-f5-c6-bc-35-92
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:3368
    • 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:1520
    • 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 behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2656
    • C:\Windows\SysWOW64\arp.exe
      arp -d
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1160

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

    53a10b1d7627e0d4c0620ff8b6320e30

    SHA1

    10c86b6685103d29c748c1961912f4e55b2cbdd4

    SHA256

    950e2410fb2f145ae4a87c9572671cd81c2120d1da14bc4358564e29a3d6df59

    SHA512

    a3f8298877787946e981e6d6e1a70f66de4c0ab4176ca367cc47907f8d1d599b94e64e3032e6f7f57a8766ed47765fe422c176bd4509ac64981f98d561394885

  • 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

    16a60cf18799008a9aed9c4359221ac9

    SHA1

    42c99150d11ce910ed52b02dbbba51a8006d33e5

    SHA256

    369fe6c9ae08358ff1a1caebd6eb47c7c7b10cacb3d68d9069b32470a56a1a53

    SHA512

    015ea4f7422a01673e817ca5101c7eff055194a621d141414345b746b64685a43cf078c8e6adaaa47b5658dfca71249cd03091872dd2eb7c3655f393287c58ef

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

    Filesize

    1.9MB

    MD5

    0618e9851ea4a522abeded8d40c2f19e

    SHA1

    c6772967fdf545e32d28f3b46e97aec5b9ff99f5

    SHA256

    506c374fbdf14420306e2da8d123c2138c2ceabd2046178317508a25949d3dc4

    SHA512

    b8c4816d81aa14646a3b690da76c0d33f59b7d419305638747503dba6bb84a63b906fe7d0ced59850ad25db37c1e0e6f3bd614a902f2f5ffb3d2bf74ec4e571f

  • memory/1320-94-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/1320-7-0x0000000000641000-0x0000000000642000-memory.dmp

    Filesize

    4KB

  • memory/1320-91-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/1320-93-0x0000000000640000-0x000000000088A000-memory.dmp

    Filesize

    2.3MB

  • memory/1320-97-0x0000000000640000-0x000000000088A000-memory.dmp

    Filesize

    2.3MB

  • memory/1320-99-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/1320-4-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/1520-64-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/1520-20-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/2656-101-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/2656-76-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/2656-100-0x0000000073910000-0x0000000073988000-memory.dmp

    Filesize

    480KB

  • memory/2656-109-0x0000000073910000-0x0000000073988000-memory.dmp

    Filesize

    480KB

  • memory/2656-110-0x0000000010000000-0x0000000010033000-memory.dmp

    Filesize

    204KB

  • memory/2656-113-0x0000000073910000-0x0000000073988000-memory.dmp

    Filesize

    480KB

  • memory/2656-129-0x0000000073910000-0x0000000073988000-memory.dmp

    Filesize

    480KB

  • memory/2656-131-0x0000000073910000-0x0000000073988000-memory.dmp

    Filesize

    480KB