Analysis

  • max time kernel
    45s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    16/11/2022, 06:51

General

  • Target

    from-imgML1.EXE1.exe

  • Size

    320KB

  • MD5

    8575d49bab12b0c2895e45f0827378c5

  • SHA1

    b04d0b981bb72e0ae73e9dc727ef7e913ddbb19e

  • SHA256

    64c51e8596ab37cfd98095e97ed384143354721a5e27dba94ffe877232966572

  • SHA512

    dea86dc0be4caa8c7bb4fd297f5cff48b34277bcd9719fa9de6ea3faac2349ca33d3097f87744a678a48755ab2a226586c05a7604af697d70c6725609b3dea40

  • SSDEEP

    6144:QEa0Ot9Y94kVWQKdT401yxzINr5b7A+vZZYVPxmTYvHtsgLoAeu:ctK9ohapwbc+BUmTYh

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

nanomalay23.hopto.org:6932

Mutex

6bd890d1-3408-4922-8966-5f83f82f18cb

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    nanomalay23.hopto.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-08-28T04:28:03.334276736Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    6932

  • default_group

    Default

  • 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

    6bd890d1-3408-4922-8966-5f83f82f18cb

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • NanoCore

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

  • Executes dropped EXE 2 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\from-imgML1.EXE1.exe
    "C:\Users\Admin\AppData\Local\Temp\from-imgML1.EXE1.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1480
    • C:\Users\Admin\AppData\Local\Temp\eyyqrt.exe
      "C:\Users\Admin\AppData\Local\Temp\eyyqrt.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:304
      • C:\Users\Admin\AppData\Local\Temp\eyyqrt.exe
        "C:\Users\Admin\AppData\Local\Temp\eyyqrt.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:984
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "NTFS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp501.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:1484
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "NTFS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp6F5.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:2024

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\djonutjxoko.eu

          Filesize

          7KB

          MD5

          dac1eb49b88de22d36af72e81ccced77

          SHA1

          7a60169c4ac6382c1aceb3b3f3bc3361f8676597

          SHA256

          fd25495c55c46bf8c6eb3b8acf9aa09f664decb2a3e6694bbf403011e49a2f3b

          SHA512

          7dd2f0969a25c948c29340992f62c8548eaf470513eed3a6e8f91896f9fac1c978128ec5fd301cf5d5de403271a35527f111a86bdcf5964cb7e042e1f4c52f1f

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

          Filesize

          9KB

          MD5

          559cba07d143656673e152b138c083c4

          SHA1

          84d7c8d67b191dcc61355150f19431075122df31

          SHA256

          50b0b183def0f09d9f98006931f35c3595d94d27d678372bfd550a613bbc4b01

          SHA512

          def61830e30ec7bb94c3bdc196c01d54ed284341063d7d2e8ec501ef19d6e280149c6a8c8874f2f11ae42f197084dcd6e979c4fcca941e20a31daaccc14d33dd

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

          Filesize

          9KB

          MD5

          559cba07d143656673e152b138c083c4

          SHA1

          84d7c8d67b191dcc61355150f19431075122df31

          SHA256

          50b0b183def0f09d9f98006931f35c3595d94d27d678372bfd550a613bbc4b01

          SHA512

          def61830e30ec7bb94c3bdc196c01d54ed284341063d7d2e8ec501ef19d6e280149c6a8c8874f2f11ae42f197084dcd6e979c4fcca941e20a31daaccc14d33dd

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

          Filesize

          9KB

          MD5

          559cba07d143656673e152b138c083c4

          SHA1

          84d7c8d67b191dcc61355150f19431075122df31

          SHA256

          50b0b183def0f09d9f98006931f35c3595d94d27d678372bfd550a613bbc4b01

          SHA512

          def61830e30ec7bb94c3bdc196c01d54ed284341063d7d2e8ec501ef19d6e280149c6a8c8874f2f11ae42f197084dcd6e979c4fcca941e20a31daaccc14d33dd

        • C:\Users\Admin\AppData\Local\Temp\glhevhy.blm

          Filesize

          281KB

          MD5

          3b0e37cc36b6ad56ebc4df099f57d83d

          SHA1

          b77a8b37a343bfd51868fd6eb9fd3e96ac02f6a6

          SHA256

          965cd0c1822e538e6d2ec273f8817a3d48c21add51034203fe1b6a6c304bf839

          SHA512

          5ef8a815e3d7fb7ebaae832d6aa1b8cc1b8bc1392563d1783631b3b74198dc0572e5de971716c74ba6f06545169d0efb70d710d62e4bd02fa960de6d335e4580

        • C:\Users\Admin\AppData\Local\Temp\tmp501.tmp

          Filesize

          1KB

          MD5

          9ee60333aa25733020c9902afb222008

          SHA1

          98064f5644019e39a7a5230943b248f0d66b05db

          SHA256

          22c0da1ba1296b531734d24317e03008fbb3eea28ac8c4d8667972e59b9c44ad

          SHA512

          18ae16776024031ef9539565e3d3654d4131e00bccae18b44c31937d2cf7fd4de629159de69143f8c23667102d9e6e999f7c24f84b2bc11f65a27cd130e8bd97

        • C:\Users\Admin\AppData\Local\Temp\tmp6F5.tmp

          Filesize

          1KB

          MD5

          981e126601526eaa5b0ad45c496c4465

          SHA1

          d610d6a21a8420cc73fcd3e54ddae75a5897b28b

          SHA256

          11ae277dfa39e7038b782ca6557339e7fe88533fe83705c356a1500a1402d527

          SHA512

          a59fb704d931ccb7e1ec1a7b98e24ccd8708be529066c6de4b673098cdebef539f7f50d9e051c43954b5a8e7f810862b3a4ede170f131e080dadc3e763ed4bdb

        • \Users\Admin\AppData\Local\Temp\eyyqrt.exe

          Filesize

          9KB

          MD5

          559cba07d143656673e152b138c083c4

          SHA1

          84d7c8d67b191dcc61355150f19431075122df31

          SHA256

          50b0b183def0f09d9f98006931f35c3595d94d27d678372bfd550a613bbc4b01

          SHA512

          def61830e30ec7bb94c3bdc196c01d54ed284341063d7d2e8ec501ef19d6e280149c6a8c8874f2f11ae42f197084dcd6e979c4fcca941e20a31daaccc14d33dd

        • \Users\Admin\AppData\Local\Temp\eyyqrt.exe

          Filesize

          9KB

          MD5

          559cba07d143656673e152b138c083c4

          SHA1

          84d7c8d67b191dcc61355150f19431075122df31

          SHA256

          50b0b183def0f09d9f98006931f35c3595d94d27d678372bfd550a613bbc4b01

          SHA512

          def61830e30ec7bb94c3bdc196c01d54ed284341063d7d2e8ec501ef19d6e280149c6a8c8874f2f11ae42f197084dcd6e979c4fcca941e20a31daaccc14d33dd

        • memory/984-77-0x0000000002090000-0x000000000209E000-memory.dmp

          Filesize

          56KB

        • memory/984-82-0x0000000002270000-0x0000000002280000-memory.dmp

          Filesize

          64KB

        • memory/984-86-0x00000000044B0000-0x00000000044C4000-memory.dmp

          Filesize

          80KB

        • memory/984-66-0x0000000000370000-0x00000000003A8000-memory.dmp

          Filesize

          224KB

        • memory/984-84-0x0000000004350000-0x000000000435E000-memory.dmp

          Filesize

          56KB

        • memory/984-72-0x00000000007D0000-0x00000000007DA000-memory.dmp

          Filesize

          40KB

        • memory/984-73-0x00000000007E0000-0x00000000007FE000-memory.dmp

          Filesize

          120KB

        • memory/984-74-0x0000000000800000-0x000000000080A000-memory.dmp

          Filesize

          40KB

        • memory/984-76-0x0000000001F50000-0x0000000001F6A000-memory.dmp

          Filesize

          104KB

        • memory/984-75-0x0000000000870000-0x0000000000882000-memory.dmp

          Filesize

          72KB

        • memory/984-85-0x0000000004510000-0x000000000453E000-memory.dmp

          Filesize

          184KB

        • memory/984-78-0x00000000020A0000-0x00000000020B2000-memory.dmp

          Filesize

          72KB

        • memory/984-79-0x0000000002240000-0x000000000224E000-memory.dmp

          Filesize

          56KB

        • memory/984-81-0x0000000002260000-0x0000000002274000-memory.dmp

          Filesize

          80KB

        • memory/984-80-0x0000000002250000-0x000000000225C000-memory.dmp

          Filesize

          48KB

        • memory/984-67-0x0000000000400000-0x000000000044A000-memory.dmp

          Filesize

          296KB

        • memory/984-83-0x0000000004340000-0x0000000004354000-memory.dmp

          Filesize

          80KB

        • memory/1480-54-0x0000000076201000-0x0000000076203000-memory.dmp

          Filesize

          8KB