Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    04/05/2026, 09:28

General

  • Target
    2026-05-04_1bec4b14c88eb27e0cc3107a2cd263dc_elex_lockbit.exe
  • Size 37KB
  • Sample260504-lfmcksfv2t
  • SHA256 c3bfe47eab24ae3b8f99e0a788e65c58ca1d40b5d55981a2c1195478bd873b1f
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 1 IoCs
  • Detects executables containing anti-forensic artifacts of deleting USN change journal. Observed in r 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Impair Defenses: Safe Mode Boot 1 TTPs 2 IoCs
  • Subvert Trust Controls: Mark-of-the-Web Bypass 1 TTPs 1 IoCs

    When files are downloaded from the Internet, they are tagged with a hidden NTFS Alternate Data Stream (ADS) named Zone.Identifier with a specific value known as the MOTW.

  • 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.

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

    Adversaries may check for Internet connectivity on compromised systems.

  • NTFS ADS 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-05-04_1bec4b14c88eb27e0cc3107a2cd263dc_elex_lockbit.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-05-04_1bec4b14c88eb27e0cc3107a2cd263dc_elex_lockbit.exe"
    1⤵
    • Impair Defenses: Safe Mode Boot
    • Subvert Trust Controls: Mark-of-the-Web Bypass
    • System Location Discovery: System Language Discovery
    • NTFS ADS
    • Suspicious use of WriteProcessMemory
    PID:3880
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /d /c ping -n 2 127.0.0.1 > NUL & fsutil file setzerodata offset=0 length=524288 "C:\Users\Admin\AppData\Local\Temp\2026-05-04_1bec4b14c88eb27e0cc3107a2cd263dc_elex_lockbit.exe" & del "C:\Users\Admin\AppData\Local\Temp\2026-05-04_1bec4b14c88eb27e0cc3107a2cd263dc_elex_lockbit.exe" > NUL & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:5232
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 2 127.0.0.1
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:5248
      • C:\Windows\SysWOW64\fsutil.exe
        fsutil file setzerodata offset=0 length=524288 "C:\Users\Admin\AppData\Local\Temp\2026-05-04_1bec4b14c88eb27e0cc3107a2cd263dc_elex_lockbit.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3512
  • C:\ProgramData\Microsoft\v2.0_2.0.0.0__d69b2683884daca8\mavinject.exe
    C:\ProgramData\Microsoft\v2.0_2.0.0.0__d69b2683884daca8\mavinject.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    PID:4848

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp2110.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmp2110.tmp
        • Size 37KB
        • SHA256 c3bfe47eab24ae3b8f99e0a788e65c58ca1d40b5d55981a2c1195478bd873b1f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3880-40-0x0000000002E40000-0x0000000002EC2000-memory.dmp