Analysis

  • max time kernel
    131s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-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.

  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • Nirsoft 3 IoCs
  • Executes dropped EXE 2 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 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 12 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\from-imgML1.EXE1.exe
    "C:\Users\Admin\AppData\Local\Temp\from-imgML1.EXE1.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3352
    • C:\Users\Admin\AppData\Local\Temp\eyyqrt.exe
      "C:\Users\Admin\AppData\Local\Temp\eyyqrt.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1392
      • 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
        • Suspicious use of SetThreadContext
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2532
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "UPNP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp88CC.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:4216
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "UPNP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8A25.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:208
        • \??\c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe
          "c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\eteu2r1v.yu1"
          4⤵
            PID:3140
          • \??\c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe
            "c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\eteu2r1v.yu1"
            4⤵
            • Accesses Microsoft Outlook accounts
            PID:920
          • \??\c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe
            "c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\dju0gs15.i14"
            4⤵
              PID:4620
            • \??\c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe
              "c:\windows\microsoft.net\framework\v4.0.30319\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\dju0gs15.i14"
              4⤵
              • Suspicious behavior: EnumeratesProcesses
              PID:4912

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            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\dju0gs15.i14

              Filesize

              3KB

              MD5

              02524418240369b25b988e9884cd1c54

              SHA1

              42a33322d952edf6d8431d4cd788bbc863d2b890

              SHA256

              80b2a0874c2f734dfe1196d7ae2a7bc6ccb30df2d9281513ac33edc529a71a37

              SHA512

              7c5bbe911f7f0b072d6fdb89ea5759655c2b5cf9ebfddff8f2f67f956141b8ed3697ab0504f60c3992849afbbc79434043a6c04d7cf6ddd958e23354fd3a698f

            • C:\Users\Admin\AppData\Local\Temp\eteu2r1v.yu1

              Filesize

              523B

              MD5

              69b2a2e17e78d24abee9f1de2f04811a

              SHA1

              d19c109704e83876ab3527457f9418a7d053aa33

              SHA256

              1b1491f21e64681f8fdc27b2265e2274fb7813eecb6ad8b446d2e431f6300edd

              SHA512

              eb7269979bc4187520636fe3d7b3089f2c7c02e81c4ce2a738ade680f72c61c67fe9577eeaa09d3ca93f34b60be8c434d2cfbfed6566e783f6611279f056150f

            • 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\tmp88CC.tmp

              Filesize

              1KB

              MD5

              9ee60333aa25733020c9902afb222008

              SHA1

              98064f5644019e39a7a5230943b248f0d66b05db

              SHA256

              22c0da1ba1296b531734d24317e03008fbb3eea28ac8c4d8667972e59b9c44ad

              SHA512

              18ae16776024031ef9539565e3d3654d4131e00bccae18b44c31937d2cf7fd4de629159de69143f8c23667102d9e6e999f7c24f84b2bc11f65a27cd130e8bd97

            • C:\Users\Admin\AppData\Local\Temp\tmp8A25.tmp

              Filesize

              1KB

              MD5

              c9a4c783d2e18eea86e071de92f36f02

              SHA1

              4cb02db05386ccb70a23fa89dbadfddfc8f7b6af

              SHA256

              21d669a674eb23538f38f6822429d797e69e0685d18c0e6e03ec6801098b240a

              SHA512

              b6d5198d9ca83687fcc491c02ad8b417e02dff0150b514c3d39d13b8de9ffba6f3779ee7bb6350b087474fb6e0d1bd10b8fdd5c8f48a46c9cfd183d9045b80ef

            • memory/920-154-0x0000000000400000-0x000000000041B000-memory.dmp

              Filesize

              108KB

            • memory/920-153-0x0000000000400000-0x000000000041B000-memory.dmp

              Filesize

              108KB

            • memory/920-151-0x0000000000400000-0x000000000041B000-memory.dmp

              Filesize

              108KB

            • memory/2532-140-0x0000000005200000-0x0000000005292000-memory.dmp

              Filesize

              584KB

            • memory/2532-148-0x0000000006C30000-0x0000000006C96000-memory.dmp

              Filesize

              408KB

            • memory/2532-143-0x00000000052A0000-0x00000000052AA000-memory.dmp

              Filesize

              40KB

            • memory/2532-141-0x0000000005340000-0x00000000053DC000-memory.dmp

              Filesize

              624KB

            • memory/2532-142-0x0000000000400000-0x000000000044A000-memory.dmp

              Filesize

              296KB

            • memory/2532-139-0x00000000057B0000-0x0000000005D54000-memory.dmp

              Filesize

              5.6MB

            • memory/4912-158-0x0000000000400000-0x0000000000453000-memory.dmp

              Filesize

              332KB

            • memory/4912-160-0x0000000000400000-0x0000000000453000-memory.dmp

              Filesize

              332KB

            • memory/4912-161-0x0000000000400000-0x0000000000453000-memory.dmp

              Filesize

              332KB