Analysis

  • max time kernel
    150s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-11-2024 19:05

General

  • Target

    3a698dd58a116915f6a48fe8423a5a8e45f528ac2ce1bd0e6a822950955ad99f.exe

  • Size

    416KB

  • MD5

    ae00ad0a951b7f5fd34acd8c1d3cb1c3

  • SHA1

    d15761a9272edd220b76ce2063714a09cca3c4e7

  • SHA256

    3a698dd58a116915f6a48fe8423a5a8e45f528ac2ce1bd0e6a822950955ad99f

  • SHA512

    a16a61cc3625279c381a05acdc50e9e4c8ebb296884cac3000f0702bfc30bdcdd3d971fcd6db4c35469be4cd8d7ba9544f01cbcabb7a35ad3ce0d76d905869cf

  • SSDEEP

    6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse

Malware Config

Signatures

  • Blocklisted process makes network request 8 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 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 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • 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.

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3a698dd58a116915f6a48fe8423a5a8e45f528ac2ce1bd0e6a822950955ad99f.exe
    "C:\Users\Admin\AppData\Local\Temp\3a698dd58a116915f6a48fe8423a5a8e45f528ac2ce1bd0e6a822950955ad99f.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:740
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\dbrayxl.exe "C:\Users\Admin\AppData\Local\Temp\3a698dd58a116915f6a48fe8423a5a8e45f528ac2ce1bd0e6a822950955ad99f.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2876
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 2
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:1368
      • C:\Users\Admin\AppData\Local\Temp\dbrayxl.exe
        C:\Users\Admin\AppData\Local\Temp\\dbrayxl.exe "C:\Users\Admin\AppData\Local\Temp\3a698dd58a116915f6a48fe8423a5a8e45f528ac2ce1bd0e6a822950955ad99f.exe"
        3⤵
        • Deletes itself
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:624
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\hioztq\jjvdy.dll",Verify C:\Users\Admin\AppData\Local\Temp\dbrayxl.exe
          4⤵
          • Blocklisted process makes network request
          • Loads dropped DLL
          • Adds Run key to start application
          • Enumerates connected drives
          • Writes to the Master Boot Record (MBR)
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • System Location Discovery: System Language Discovery
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1740

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    416KB

    MD5

    85e0fdee06d50906104eba53d0724fcb

    SHA1

    86c808a3c7a11920f8a4cd017e350bad0e8d0c0e

    SHA256

    78a727d1ab9cdfde82c5ab41221782596b86cbeb292d1ce3f4745543dc5395a7

    SHA512

    e44315b85e6dca73509f26537ce4ad1e22dec9b04144c3ed3b8a40c23af613c535e3461f73e16c1cea8104ae3fb6ce9bb05fbe3b90a26495e678f79651ab1e22

  • \??\c:\Program Files\hioztq\jjvdy.dll

    Filesize

    228KB

    MD5

    373f0e827f6e55594445c8ac8e5e15ff

    SHA1

    734f6b405d39351b91cfeb71973ecb47d94136de

    SHA256

    b960a3a53541237b71dba0cfd8f00a4e2718584b345082aabd43ff6e34f64766

    SHA512

    304133fb595660e0cfdcca2e4116e14f209de71850194ba149c69d194d8d46d77f014395d676ddb8d85591fa5ad9c15a3e4e7f5ef8746449a069a373319216e7

  • memory/624-7-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/740-0-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/740-2-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/1740-10-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/1740-11-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/1740-13-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB