Analysis

  • max time kernel
    272s
  • max time network
    337s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-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

Extracted

Family

nanocore

Version

1.2.1.1

C2

jesusfountain.redirectme.net:54557

Mutex

93e4b02c-abdc-4e66-ae1c-828d68851ee9

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2014-10-21T10:21:59.185241736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    54557

  • default_group

    Project School

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    93e4b02c-abdc-4e66-ae1c-828d68851ee9

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    jesusfountain.redirectme.net

  • primary_dns_server

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.1.1

  • wan_timeout

    8000

Signatures

  • NanoCore

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

  • Executes dropped EXE 2 IoCs
  • Drops startup file 1 IoCs
  • Loads dropped DLL 2 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 34 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d6cf37735c4abba3704e6416656872b077deb3ec41ab5b06408b314e9c4e35da.exe
    "C:\Users\Admin\AppData\Local\Temp\d6cf37735c4abba3704e6416656872b077deb3ec41ab5b06408b314e9c4e35da.exe"
    1⤵
    • Loads dropped DLL
    • Maps connected drives based on registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:468
    • 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:1792
      • 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:1816
    • 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:1672
      • 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:288

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        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

        • \ProgramData\SixEngine.exe

          Filesize

          799KB

          MD5

          c5857e5300ee814283aef378678bf693

          SHA1

          34f0bda19405d0da0eda788985806d3298dba6bb

          SHA256

          d6cf37735c4abba3704e6416656872b077deb3ec41ab5b06408b314e9c4e35da

          SHA512

          bd98f151acebc7d8938c47ad297f48dc4eefe187ba616e8cc18828005a1dd2dedaa957cffb415551b9ac780f4d5b545214cb3d1a404ae017a0cac1c2f2dd778c

        • \ProgramData\SixEngine.exe

          Filesize

          799KB

          MD5

          c5857e5300ee814283aef378678bf693

          SHA1

          34f0bda19405d0da0eda788985806d3298dba6bb

          SHA256

          d6cf37735c4abba3704e6416656872b077deb3ec41ab5b06408b314e9c4e35da

          SHA512

          bd98f151acebc7d8938c47ad297f48dc4eefe187ba616e8cc18828005a1dd2dedaa957cffb415551b9ac780f4d5b545214cb3d1a404ae017a0cac1c2f2dd778c

        • memory/288-73-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/288-83-0x0000000074AC0000-0x000000007506B000-memory.dmp

          Filesize

          5.7MB

        • memory/288-70-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/288-81-0x0000000074AC0000-0x000000007506B000-memory.dmp

          Filesize

          5.7MB

        • memory/288-79-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/288-66-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/288-67-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/288-77-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/288-69-0x0000000000400000-0x0000000000482000-memory.dmp

          Filesize

          520KB

        • memory/468-55-0x0000000074AC0000-0x000000007506B000-memory.dmp

          Filesize

          5.7MB

        • memory/468-54-0x00000000763D1000-0x00000000763D3000-memory.dmp

          Filesize

          8KB

        • memory/468-65-0x0000000074AC0000-0x000000007506B000-memory.dmp

          Filesize

          5.7MB

        • memory/468-56-0x0000000074AC0000-0x000000007506B000-memory.dmp

          Filesize

          5.7MB

        • memory/1672-71-0x0000000074AC0000-0x000000007506B000-memory.dmp

          Filesize

          5.7MB

        • memory/1672-82-0x0000000074AC0000-0x000000007506B000-memory.dmp

          Filesize

          5.7MB