Analysis

  • max time kernel
    150s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-11-2024 01:24

General

  • Target

    8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe

  • Size

    414KB

  • MD5

    456d433746127fea587949fe72d79c4e

  • SHA1

    3e710e3728e5754f1ad3c6386ec630df74834627

  • SHA256

    8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba

  • SHA512

    41f98ab230c4aa45c47e434c02e26e147ab67b787e9719e821ec5222f5d4eafd1b6bcc80f0e439c609d0d2e82e08d0a1b7381a209d6363f66acc2b14a776cc7e

  • 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\8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe
    "C:\Users\Admin\AppData\Local\Temp\8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4680
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\wssnq.exe "C:\Users\Admin\AppData\Local\Temp\8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:4844
      • 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:4080
      • C:\Users\Admin\AppData\Local\Temp\wssnq.exe
        C:\Users\Admin\AppData\Local\Temp\\wssnq.exe "C:\Users\Admin\AppData\Local\Temp\8408bd03b4305c3f9e8917541a2f06d789003acebca3332929630000301bedba.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:932
        • \??\c:\windows\SysWOW64\rundll32.exe
          c:\windows\system32\rundll32.exe "c:\Program Files\yrese\ocuex.dll",Verify C:\Users\Admin\AppData\Local\Temp\wssnq.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:4620

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    414KB

    MD5

    815d51f0ea3fd573720425a23ac17766

    SHA1

    c6cfa5dc046fd1daff22a278be08a15f6e50bf88

    SHA256

    7595d4ef16cad57966ac45acc39b231e1eda86ef2c353f9daee0bb2276673541

    SHA512

    a850d5f64b2087da9fb532fd83c964ce462ca82f3958de2b5ae0304b404b1c530371699c9a0005256ab21559218395475c88c21f731aec229b78b1e278a68570

  • \??\c:\Program Files\yrese\ocuex.dll

    Filesize

    228KB

    MD5

    cc7f8ec52b6667038816d8da493d879d

    SHA1

    c1f1e0a9334a724b240a986b6440a34c6f55faf6

    SHA256

    030dafe0c4e3479527f7803144841537ffdde9ab95a5bd92bd2261d0f3448d9f

    SHA512

    b59a7b15760f5f6574de644a23164a905ea387aed002c9a72566bae1d4c0038246f6fcfbbe6610389bfe6aa9f198fa1e541f85957323eff4963b1fbb4cd2f694

  • memory/932-7-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/4620-10-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/4620-11-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/4620-13-0x0000000010000000-0x0000000010080000-memory.dmp

    Filesize

    512KB

  • memory/4680-0-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/4680-2-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB