Analysis

  • max time kernel
    149s
  • max time network
    105s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/10/2024, 08:32

General

  • Target

    a357a8d78cebccab2b4bff1289f7cd1b2699d65a76f3f7487264bc044e8bf0e5N.exe

  • Size

    140KB

  • MD5

    2ec8c892b9da3732b07c12118bc0fd00

  • SHA1

    e0ba1b691b58e5bea869ed235d8302556436c060

  • SHA256

    a357a8d78cebccab2b4bff1289f7cd1b2699d65a76f3f7487264bc044e8bf0e5

  • SHA512

    e5799388697003db690310dff6148cf10f5a3bf9a01882cd9ecf6874f2c5e96c6f387a65b79e0dbd9283f6e7a49b0cd03fc72622886b3ebe5ce01598d139d539

  • SSDEEP

    1536:Eo/s9R3yAgfopO1Ek93yAgf3TN2s+zheW6BVrqzCJ3bdDY+W14N4NmzWlIA7hKR1:EcbfwkAbfZ2lQBV+UdE+rECWp7hKKNSr

Malware Config

Signatures

  • Floxif, Floodfix

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

  • Modifies WinLogon for persistence 2 TTPs 8 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 4 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 4 IoCs
  • Detects Floxif payload 1 IoCs
  • Disables RegEdit via registry modification 4 IoCs
  • Event Triggered Execution: Image File Execution Options Injection 1 TTPs 16 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.

  • Drops startup file 5 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 8 IoCs
  • Enumerates connected drives 3 TTPs 64 IoCs

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

  • Drops file in System32 directory 32 IoCs
  • UPX packed file 3 IoCs

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

  • Drops file in Program Files directory 28 IoCs
  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Modifies registry class 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a357a8d78cebccab2b4bff1289f7cd1b2699d65a76f3f7487264bc044e8bf0e5N.exe
    "C:\Users\Admin\AppData\Local\Temp\a357a8d78cebccab2b4bff1289f7cd1b2699d65a76f3f7487264bc044e8bf0e5N.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1360
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\O85068Z\service.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\O85068Z\service.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Disables RegEdit via registry modification
      • Event Triggered Execution: Image File Execution Options Injection
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:376
    • C:\Windows\M57151\smss.exe
      "C:\Windows\M57151\smss.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Disables RegEdit via registry modification
      • Event Triggered Execution: Image File Execution Options Injection
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:3452
    • C:\Windows\M57151\EmangEloh.exe
      "C:\Windows\M57151\EmangEloh.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Disables RegEdit via registry modification
      • Event Triggered Execution: Image File Execution Options Injection
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:2432
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\O85068Z\winlogon.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\O85068Z\winlogon.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Disables RegEdit via registry modification
      • Event Triggered Execution: Image File Execution Options Injection
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:4452

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:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\O85068Z\service.exe

    Filesize

    64KB

    MD5

    d0824d179d20045967001e30a65684e2

    SHA1

    120be0c0bcb41b1b55d1e48aea7a14e8e807ae8a

    SHA256

    11f04f6be74a26bf5612fe4fedbf220c262cc42450cbddeecd1ca60c1169fd86

    SHA512

    e42ceebbb429a2b2a66483a563b037c2f3dd58bd2d3d07d5a3a5950eaec0a94042ef1455d9b65f952f779f131ae8aeab44f545411b499bc0737c7c8ce69358fa

  • C:\Windows\[TheMoonlight].txt

    Filesize

    109B

    MD5

    68c7836c8ff19e87ca33a7959a2bdff5

    SHA1

    cc5d0205bb71c10bbed22fe47e59b1f6817daab7

    SHA256

    883b19ec550f7ddb1e274a83d58d66c771ab10fefd136bab79483f2eb84e7fec

    SHA512

    3656005148788ed7ac8f5b5f8f6f4736c2dc4a94771291170e61666beb81e63be2a1a0f2913233b0e3f12ddfa7f1e89da9cd8323306413395ee78b2ece7fbfe8

  • C:\Windows\system\msvbvm60.dll

    Filesize

    1.4MB

    MD5

    25f62c02619174b35851b0e0455b3d94

    SHA1

    4e8ee85157f1769f6e3f61c0acbe59072209da71

    SHA256

    898288bd3b21d0e7d5f406df2e0b69a5bbfa4f241baf29a2cdf8a3cf4d4619f2

    SHA512

    f4529fd9eca4e4696f7f06874866ff98a1447a9b0d3a20ef0de54d4d694e2497fd39c452f73fab9b8a02962a7b2b88d1e85f6e35c7cbcb9555003c6828bebc3a

  • memory/376-246-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/376-238-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/376-58-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/376-64-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/376-288-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/376-252-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/376-260-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/376-242-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/376-292-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/376-209-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/1360-0-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/1360-1-0x0000000000401000-0x0000000000402000-memory.dmp

    Filesize

    4KB

  • memory/1360-4-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1360-120-0x0000000000401000-0x0000000000402000-memory.dmp

    Filesize

    4KB

  • memory/1360-143-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/1360-144-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1360-8-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2432-227-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2432-290-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2432-254-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2432-282-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/3452-239-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/3452-253-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/3452-212-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/4452-245-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/4452-263-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/4452-267-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/4452-271-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/4452-275-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/4452-259-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/4452-283-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/4452-287-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/4452-255-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/4452-249-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/4452-291-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/4452-241-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/4452-295-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB