Analysis

  • max time kernel
    104s
  • max time network
    104s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-08-2024 15:32

General

  • Target

    6639540418063f3317b273d87be5fa90N.exe

  • Size

    204KB

  • MD5

    6639540418063f3317b273d87be5fa90

  • SHA1

    0b724a95359c4c88bfbeceb5222a940e26a87277

  • SHA256

    4178834695d7a474e0f32c4460e6df08382b5db972bad15704453d0a3cd621e2

  • SHA512

    bfda619f5bdf3183b3e5e87f07ac11927e43bedfc9a88f72fbee5f59fb88a327b5a50d7e723ced4c8aec1849bc81e22c2f6421dd2e3f8c3e3071961510485bb9

  • SSDEEP

    6144:KVGdPRAFDiJuzdv4PSMBV+UdvrEFp7hK8xc:KV4PSBagdw6MBjvrEH7Zxc

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 4 IoCs
  • UPX packed file 8 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6639540418063f3317b273d87be5fa90N.exe
    "C:\Users\Admin\AppData\Local\Temp\6639540418063f3317b273d87be5fa90N.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:1372
    • \??\c:\temp\ext36642\hotfix.exe
      c:\temp\ext36642\hotfix.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:3236

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    67KB

    MD5

    7574cf2c64f35161ab1292e2f532aabf

    SHA1

    14ba3fa927a06224dfe587014299e834def4644f

    SHA256

    de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

    SHA512

    4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

  • C:\temp\ext36642\hotfix.exe

    Filesize

    105KB

    MD5

    e1f9e0c91d35efd132f08aa53af8ed6c

    SHA1

    c129eff999749dad700460e8f0d799d0c7863214

    SHA256

    0451e69d256acf67745c3918180c0d376a1cbee803951cd57c48e289b5b6a4ae

    SHA512

    6883b7336a5c6c67e43849fa009b6a6d5a95b8b2a3490e306255aa3b809f567953233912a04138c2844864d8348a321da4ee895d3349ed1fd8bbb091c06cf353

  • C:\temp\ext36642\hotfix.exe.tmp

    Filesize

    182KB

    MD5

    7eefbd204e91845511210f64b6b2d229

    SHA1

    1ef06b7d684dbc890e6ffa545430295ed92f59a7

    SHA256

    8592495243340af9d21e096eea78e1cfe9d1b00a81e3bcbc866754c866f40e25

    SHA512

    6e821bf3c6241ac29027b0e433c49f4819cf00ecf5ebdc2325c37ba6f6e9b2a3f5143046bf32f36c3e386ffbbb36315c2ae7512d2f4bee796bac871be989059f

  • \??\c:\temp\ext36642\hotfix.inf

    Filesize

    17KB

    MD5

    639176bb485ffed1372c6f6b290c00cd

    SHA1

    92a71862ce7564f92a1b00fd988191e4bbf13175

    SHA256

    2a2f1a38a91fe63ca0023413fc0e2d81aeb86e7bb811a7be114dd2f995e2523e

    SHA512

    83904cdf44b04454021f25b745d2b1292c69fe710d1457104ce3b011c0e025c34110015e39274227d3e177b59f8c7ece5b52d83b3ddaa2ed6b70963cfc5de043

  • memory/1372-7-0x0000000005001000-0x0000000005002000-memory.dmp

    Filesize

    4KB

  • memory/1372-0-0x0000000005000000-0x0000000005018000-memory.dmp

    Filesize

    96KB

  • memory/1372-9-0x0000000005000000-0x0000000005018000-memory.dmp

    Filesize

    96KB

  • memory/1372-5-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1372-35-0x0000000005000000-0x0000000005018000-memory.dmp

    Filesize

    96KB

  • memory/1372-38-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1372-39-0x0000000005001000-0x0000000005002000-memory.dmp

    Filesize

    4KB

  • memory/1372-40-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1372-55-0x0000000005000000-0x0000000005018000-memory.dmp

    Filesize

    96KB

  • memory/1372-56-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/3236-26-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/3236-41-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/3236-46-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB