Analysis

  • max time kernel
    15s
  • max time network
    20s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    15-08-2024 20:27

General

  • Target

    afefcb34383aaebfab116ad4137a70f0N.exe

  • Size

    210KB

  • MD5

    afefcb34383aaebfab116ad4137a70f0

  • SHA1

    105f2470abc888a309a86f01fa362f0cb78404b2

  • SHA256

    467535fd0d8024f1168aa12511ce066da706b018ce7c34ffdfce622d1b136acb

  • SHA512

    5197b4a6c311f9ce600e16073af6d4e8a944b4b2ea4f80e74f6df038d4d983ad7b18451328bd79ec75bb355fd6a78657601f3b9c193f55fc5c9038fcc5c2d2ec

  • SSDEEP

    6144:9F4yLs4WP++HuoDavXp4vQBV+UdvrEFp7hK8xq:9RQlP+rXpMQBjvrEH7Zxq

Malware Config

Signatures

  • 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.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 7 IoCs
  • UPX packed file 9 IoCs

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

  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\afefcb34383aaebfab116ad4137a70f0N.exe
    "C:\Users\Admin\AppData\Local\Temp\afefcb34383aaebfab116ad4137a70f0N.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2928
    • \??\c:\temp\ext42438\hotfix.exe
      c:\temp\ext42438\hotfix.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:2800

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\temp\ext42438\hotfix.exe.tmp

    Filesize

    183KB

    MD5

    0c74bb15aa1ca622eb12f86e5bb84900

    SHA1

    2711e96791b6da42690b89e76124ffa77678c4b7

    SHA256

    120365010314b74b0bb425d1c86615802e48fcf1ceb6130dc9f0c34969dc260b

    SHA512

    e0abb2ddbaa984f0b3b1a341a21639412d452891f0bd97f95b52cf497dd066c3b3fa29fdf1baed90082aa68d2aedd8c6483a3b63a2634b1e0369446966104a78

  • \??\c:\temp\ext42438\hotfix.inf

    Filesize

    17KB

    MD5

    1fd2b85cc8c265b4f4867e7e31387d52

    SHA1

    80b0921ea64022ebb5a3fee82f59f0e1deedd852

    SHA256

    a9e5074c188d78ccb3e1d4ee28cc48d208357d6f25353c28571fa0a6eaaa474a

    SHA512

    0664941ac3d88528d8c8254b25c29d5662fd8979f5c66604225fc9fb63d400c835f78230a8cd99ea28127b79837e2177475a8ee086737fec5206f9cd1d830300

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

    Filesize

    67KB

    MD5

    7574cf2c64f35161ab1292e2f532aabf

    SHA1

    14ba3fa927a06224dfe587014299e834def4644f

    SHA256

    de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

    SHA512

    4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

  • \temp\ext42438\hotfix.exe

    Filesize

    106KB

    MD5

    155fc68d5d845947cd0cba8a40eb2ea1

    SHA1

    1bc25d1dab8cabad382107744f3c6a59036c2b9d

    SHA256

    0fe1846a38abb3bd9e1bec74a846cf5bd8a38f508cd629b5bea3c306fea9511c

    SHA512

    4d9ba8fdf861c00bb701cf5de519d42bdc2bac27171b87f65a308a32bd4c8fe4f556fd659706c2eb5078d5b9952cc3815f76c9859c256275571c3865e2bad7ce

  • memory/2800-41-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2800-40-0x0000000001000000-0x0000000001040000-memory.dmp

    Filesize

    256KB

  • memory/2800-30-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2800-45-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2800-43-0x0000000001000000-0x0000000001040000-memory.dmp

    Filesize

    256KB

  • memory/2800-42-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2928-4-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2928-38-0x0000000005000000-0x0000000005018000-memory.dmp

    Filesize

    96KB

  • memory/2928-39-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2928-37-0x0000000005001000-0x0000000005002000-memory.dmp

    Filesize

    4KB

  • memory/2928-36-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2928-0-0x0000000005000000-0x0000000005018000-memory.dmp

    Filesize

    96KB

  • memory/2928-9-0x0000000005000000-0x0000000005018000-memory.dmp

    Filesize

    96KB

  • memory/2928-8-0x0000000005001000-0x0000000005002000-memory.dmp

    Filesize

    4KB

  • memory/2928-54-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2928-53-0x0000000005000000-0x0000000005018000-memory.dmp

    Filesize

    96KB