Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240910-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-09-2024 18:36

General

  • Target

    artifact.exe

  • Size

    178KB

  • MD5

    22a91930458ed41136ef88cd7fd978c3

  • SHA1

    a20015e3e22ada90ba646e2ab6c4d2ae7d1c3dfb

  • SHA256

    7b14a5c267d51a533b1d77b557b03c3437e7e59f699deafbb6c196cbdf38d931

  • SHA512

    6e4dd8356ab809c6d9a76fa90e7a3909917cd8035404e09046fa3e3a8ec215f6932edf5097d3603c7c68ba3e084fd8aeb038bd7b98fd32f725deae5a49cae600

  • SSDEEP

    3072:AwR8p6hiq3EyQIrZhbSJKbsQvVqRlkM4OAD/KLznBuB2JA2BjcH:AwR8p68qUY5bsQvMRlkM4RD/qzMfUi

Malware Config

Signatures

  • Floxif, Floodfix

    Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Detects Floxif payload 1 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Loads dropped DLL 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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.

  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\artifact.exe
    "C:\Users\Admin\AppData\Local\Temp\artifact.exe"
    1⤵
    • Modifies visibility of file extensions in Explorer
    • Modifies visiblity of hidden/system files in Explorer
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5080
    • C:\Windows\SysWOW64\arp.exe
      arp -a
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:552
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.0.1 99-40-0a-a4-0d-f8
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:4760
    • C:\Windows\SysWOW64\arp.exe
      arp -s 10.127.255.255 ea-a7-ab-2a-c9-13
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:232
    • C:\Windows\SysWOW64\arp.exe
      arp -s 136.243.69.123 74-a0-00-61-34-6c
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2320
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.22 22-52-0f-ea-70-4e
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:452
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.251 1a-94-7d-24-64-da
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2436
    • C:\Windows\SysWOW64\arp.exe
      arp -s 224.0.0.252 98-27-fb-2e-93-9a
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:3140
    • C:\Windows\SysWOW64\arp.exe
      arp -s 239.255.255.250 bf-44-99-a2-06-59
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:3232
    • C:\Windows\SysWOW64\arp.exe
      arp -s 255.255.255.255 e1-05-ca-bd-6a-48
      2⤵
      • Network Service Discovery
      • System Location Discovery: System Language Discovery
      PID:2268
    • C:\Windows\SysWOW64\arp.exe
      arp -d
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3296
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:2388

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Program Files\Common Files\System\symsrv.dll

      Filesize

      71KB

      MD5

      4fcd7574537cebec8e75b4e646996643

      SHA1

      efa59bb9050fb656b90d5d40c942fb2a304f2a8b

      SHA256

      8ea3b17e4b783ffc0bc387b81b823bf87af0d57da74541d88ba85314bb232a5d

      SHA512

      7f1a7ef64d332a735db82506b47d84853af870785066d29ccaf4fdeab114079a9f0db400e01ba574776a0d652a248658fe1e8f9659cdced19ad6eea09644ea3e

    • C:\Users\Admin\AppData\Local\Start\update.exe

      Filesize

      98KB

      MD5

      3fd148b1aa62ee178945baf6d06e0f0f

      SHA1

      711c7f40edee6185b63193f1e671b2fe2d15e007

      SHA256

      57d0f272b76a0639924032eedb1d89f911be719515abf803fbf07c4ac9c1eddb

      SHA512

      5e92b571ee9904d49afed585b35708113906b1235641a0ee6dddde824ec24dc2a986b8399a3c974e6cf1819a7d490060704b20bcc3ac6846f0a004e3b6ddfbc7

    • memory/5080-0-0x00000000002D0000-0x00000000002ED000-memory.dmp

      Filesize

      116KB

    • memory/5080-5-0x0000000010000000-0x0000000010033000-memory.dmp

      Filesize

      204KB

    • memory/5080-13-0x00000000002D1000-0x00000000002D2000-memory.dmp

      Filesize

      4KB

    • memory/5080-15-0x0000000010000000-0x0000000010033000-memory.dmp

      Filesize

      204KB

    • memory/5080-16-0x00000000002D0000-0x00000000002ED000-memory.dmp

      Filesize

      116KB

    • memory/5080-22-0x0000000010000000-0x0000000010033000-memory.dmp

      Filesize

      204KB

    • memory/5080-35-0x0000000010000000-0x0000000010033000-memory.dmp

      Filesize

      204KB