Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20251231-en
  • resource tags

    arch:x64arch:x86image:win11-20251231-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    07/01/2026, 04:24

General

  • Target
    2026-01-07_ab193c0efce055a896b1ebecdf4a6033_elex_runningrat_wannacry_zxshell.exe
  • Size 56KB
  • Sample260107-e1mqhsfl4w
  • SHA256 6d588fdd67f611a907005b0236d324acbf152298a6e28f5d97f9d23001d4d5e8
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • RunningRat

    RunningRat is a remote access trojan first seen in 2018.

  • Runningrat family
  • Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Creates a Windows Service
  • Drops file in System32 directory 3 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.

  • 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.

  • Modifies data under HKEY_USERS 5 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-01-07_ab193c0efce055a896b1ebecdf4a6033_elex_runningrat_wannacry_zxshell.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-01-07_ab193c0efce055a896b1ebecdf4a6033_elex_runningrat_wannacry_zxshell.exe"
    1⤵
    • Server Software Component: Terminal Services DLL
    • Loads dropped DLL
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4912
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 1 && del /f/q "C:\Users\Admin\AppData\Local\Temp\2026-01-07_ab193c0efce055a896b1ebecdf4a6033_elex_runningrat_wannacry_zxshell.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:2600
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 1
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:5076
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k "svhast"
    1⤵
      PID:3160
    • C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe -k "svhast"
      1⤵
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4284
      • C:\Windows\SysWOW64\svhast.exe
        C:\Windows\system32\svhast.exe "c:\windows\system32\240625687.dll",MainThread
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:5056
    • C:\Windows\System32\svchost.exe
      C:\Windows\System32\svchost.exe -k "svhast"
      1⤵
        PID:6092

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            240625687.dll

            • Path C:\Windows\SysWOW64\240625687.dll
            • Size 33KB
            • SHA256 d12f0cb3d1ecc150051741ff4123946bbffa7c2495ccf9ff783589e9b32f90e9
            • MD5 SHA1 SHA512 SSDEEP

            svhast.exe

            • Path C:\Windows\SysWOW64\svhast.exe
            • Size 40KB
            • SHA256 8dcaeeebef9b9f3d41d295db145ffb3850f309d089c08125c7fa7034db5fd80e
            • MD5 SHA1 SHA512 SSDEEP