Analysis

  • max time kernel
    201s
  • max time network
    206s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/11/2022, 23:32

General

  • Target

    d6cf37735c4abba3704e6416656872b077deb3ec41ab5b06408b314e9c4e35da.exe

  • Size

    799KB

  • MD5

    c5857e5300ee814283aef378678bf693

  • SHA1

    34f0bda19405d0da0eda788985806d3298dba6bb

  • SHA256

    d6cf37735c4abba3704e6416656872b077deb3ec41ab5b06408b314e9c4e35da

  • SHA512

    bd98f151acebc7d8938c47ad297f48dc4eefe187ba616e8cc18828005a1dd2dedaa957cffb415551b9ac780f4d5b545214cb3d1a404ae017a0cac1c2f2dd778c

  • SSDEEP

    12288:y3K4/IJN9odS9QUw1doEwk7Q+mKPh1DwsEPv/iIawU1x2FhgkCXcdl0YaTFiMDsU:2KJ399p+myjDIad1M2yjB

Malware Config

Signatures

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d6cf37735c4abba3704e6416656872b077deb3ec41ab5b06408b314e9c4e35da.exe
    "C:\Users\Admin\AppData\Local\Temp\d6cf37735c4abba3704e6416656872b077deb3ec41ab5b06408b314e9c4e35da.exe"
    1⤵
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:60
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "ASUS Live Update" /t REG_SZ /d "C:\ProgramData\SixEngine.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3464
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "ASUS Live Update" /t REG_SZ /d "C:\ProgramData\SixEngine.exe"
        3⤵
        • Adds Run key to start application
        PID:2204
    • C:\ProgramData\SixEngine.exe
      C:\ProgramData\SixEngine.exe
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Maps connected drives based on registry
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3432
      • C:\ProgramData\SixEngine.exe
        "C:\ProgramData\SixEngine.exe"
        3⤵
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:4536

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\ProgramData\SixEngine.exe

          Filesize

          799KB

          MD5

          c5857e5300ee814283aef378678bf693

          SHA1

          34f0bda19405d0da0eda788985806d3298dba6bb

          SHA256

          d6cf37735c4abba3704e6416656872b077deb3ec41ab5b06408b314e9c4e35da

          SHA512

          bd98f151acebc7d8938c47ad297f48dc4eefe187ba616e8cc18828005a1dd2dedaa957cffb415551b9ac780f4d5b545214cb3d1a404ae017a0cac1c2f2dd778c

        • C:\ProgramData\SixEngine.exe

          Filesize

          799KB

          MD5

          c5857e5300ee814283aef378678bf693

          SHA1

          34f0bda19405d0da0eda788985806d3298dba6bb

          SHA256

          d6cf37735c4abba3704e6416656872b077deb3ec41ab5b06408b314e9c4e35da

          SHA512

          bd98f151acebc7d8938c47ad297f48dc4eefe187ba616e8cc18828005a1dd2dedaa957cffb415551b9ac780f4d5b545214cb3d1a404ae017a0cac1c2f2dd778c

        • C:\ProgramData\SixEngine.exe

          Filesize

          799KB

          MD5

          c5857e5300ee814283aef378678bf693

          SHA1

          34f0bda19405d0da0eda788985806d3298dba6bb

          SHA256

          d6cf37735c4abba3704e6416656872b077deb3ec41ab5b06408b314e9c4e35da

          SHA512

          bd98f151acebc7d8938c47ad297f48dc4eefe187ba616e8cc18828005a1dd2dedaa957cffb415551b9ac780f4d5b545214cb3d1a404ae017a0cac1c2f2dd778c

        • memory/60-133-0x0000000075280000-0x0000000075831000-memory.dmp

          Filesize

          5.7MB

        • memory/60-139-0x0000000075280000-0x0000000075831000-memory.dmp

          Filesize

          5.7MB

        • memory/60-132-0x0000000075280000-0x0000000075831000-memory.dmp

          Filesize

          5.7MB

        • memory/3432-144-0x0000000075280000-0x0000000075831000-memory.dmp

          Filesize

          5.7MB

        • memory/3432-147-0x0000000075280000-0x0000000075831000-memory.dmp

          Filesize

          5.7MB

        • memory/4536-143-0x0000000075280000-0x0000000075831000-memory.dmp

          Filesize

          5.7MB

        • memory/4536-145-0x0000000075280000-0x0000000075831000-memory.dmp

          Filesize

          5.7MB

        • memory/4536-146-0x0000000075280000-0x0000000075831000-memory.dmp

          Filesize

          5.7MB