Analysis

  • max time kernel
    134s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240704-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-07-2024 09:13

General

  • Target

    2bc77f66378cf099b87fcfdc26e80ec6_JaffaCakes118.exe

  • Size

    906KB

  • MD5

    2bc77f66378cf099b87fcfdc26e80ec6

  • SHA1

    e48de2116d9c931aa2051ad81e57af6ec5cfedde

  • SHA256

    c8b230237028e5c7ed93e21458237528890732bf60167e37e835d4db4e79f9e4

  • SHA512

    e298d23b5bcdb854d942eca1273e8ba1f1d97860b346b0ad5d8b488a405d7de87c6a5da4fefbb00def6bcc7c2146ad3b50327c957124b180f3efe3972f7f7958

  • SSDEEP

    24576:kIQrUm0YeCJiiNxg+5OGEK3QP1p2GqiUPb:OULXCkeA+3QGO4

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

new2021.myq-see.com:2021

185.140.53.138:2021

Mutex

4e93981f-5ccc-40a6-ab4d-8d13e34d915c

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    185.140.53.138

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-10-16T08:01:24.315081336Z

  • 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

    2021

  • default_group

    2021

  • 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

    4e93981f-5ccc-40a6-ab4d-8d13e34d915c

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    new2021.myq-see.com

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 1 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).

  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2bc77f66378cf099b87fcfdc26e80ec6_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\2bc77f66378cf099b87fcfdc26e80ec6_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4864
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hCwBlullNXkFm" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEF2D.tmp"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:4616
    • C:\Users\Admin\AppData\Local\Temp\2bc77f66378cf099b87fcfdc26e80ec6_JaffaCakes118.exe
      "{path}"
      2⤵
        PID:2360
      • C:\Users\Admin\AppData\Local\Temp\2bc77f66378cf099b87fcfdc26e80ec6_JaffaCakes118.exe
        "{path}"
        2⤵
          PID:412
        • C:\Users\Admin\AppData\Local\Temp\2bc77f66378cf099b87fcfdc26e80ec6_JaffaCakes118.exe
          "{path}"
          2⤵
            PID:2376
          • C:\Users\Admin\AppData\Local\Temp\2bc77f66378cf099b87fcfdc26e80ec6_JaffaCakes118.exe
            "{path}"
            2⤵
            • 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:1900
            • C:\Windows\SysWOW64\schtasks.exe
              "schtasks.exe" /create /f /tn "SMTP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF5B5.tmp"
              3⤵
              • Scheduled Task/Job: Scheduled Task
              PID:916
            • C:\Windows\SysWOW64\schtasks.exe
              "schtasks.exe" /create /f /tn "SMTP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF691.tmp"
              3⤵
              • Scheduled Task/Job: Scheduled Task
              PID:1140
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4432,i,4226873509039249198,15952596839998010243,262144 --variations-seed-version --mojo-platform-channel-handle=4584 /prefetch:8
          1⤵
            PID:1104

          Network

          MITRE ATT&CK Matrix ATT&CK v13

          Execution

          Scheduled Task/Job

          1
          T1053

          Scheduled Task

          1
          T1053.005

          Persistence

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Scheduled Task/Job

          1
          T1053

          Scheduled Task

          1
          T1053.005

          Privilege Escalation

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Scheduled Task/Job

          1
          T1053

          Scheduled Task

          1
          T1053.005

          Defense Evasion

          Modify Registry

          1
          T1112

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          3
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\2bc77f66378cf099b87fcfdc26e80ec6_JaffaCakes118.exe.log
            Filesize

            1KB

            MD5

            8ec831f3e3a3f77e4a7b9cd32b48384c

            SHA1

            d83f09fd87c5bd86e045873c231c14836e76a05c

            SHA256

            7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

            SHA512

            26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

          • C:\Users\Admin\AppData\Local\Temp\tmpEF2D.tmp
            Filesize

            1KB

            MD5

            d81afd39df5fa65dfa0a34b8c50c1fe8

            SHA1

            e2b18b94c249040cb8213d3925278413e2d6c081

            SHA256

            de4a399493df85317225085b02c21bd5c33f589e4036eb3aa69cf673e6c4b2c0

            SHA512

            3d299c7b1b5252baf963422cdc314d862d207681ee8886cd9f4f1dcd427c5a96dd5e27b587036e9f9eed89bb95b09e03f4497aa90586eb08a45b498846422afb

          • C:\Users\Admin\AppData\Local\Temp\tmpF5B5.tmp
            Filesize

            1KB

            MD5

            fbc65d39ca3504f5e3038eab4619a55e

            SHA1

            5fc3077235483cafe9dd293aea7238bf241d5288

            SHA256

            80dcb492a804034b7159e538dfc6e984af84ded8725c5e585ae688346f5e45c1

            SHA512

            35b476713f15240d58fd9551c3c410ffbd0672e34e668bb538a2db84c89385d55086c3ab728220ab00ac542ae2e84aebdb11bb04b6b136b1f7a8fc76873039d3

          • C:\Users\Admin\AppData\Local\Temp\tmpF691.tmp
            Filesize

            1KB

            MD5

            0339b45ef206f4becc88be0d65e24b9e

            SHA1

            6503a1851f4ccd8c80a31f96bd7ae40d962c9fad

            SHA256

            3d568a47a8944a47f4aed6982755ac7ff7dda469cc1c81c213ecaa5d89de1f83

            SHA512

            c98f4513db34d50510dd986e0d812545c442bd5bef26932032b165759627fab4e00c95fe907ab3416a8a1042bfa77aa516c479f1ff7d1ec2f21ae66df8f72551

          • memory/1900-14-0x0000000000400000-0x0000000000438000-memory.dmp
            Filesize

            224KB

          • memory/1900-18-0x0000000074F90000-0x0000000075740000-memory.dmp
            Filesize

            7.7MB

          • memory/1900-31-0x0000000074F90000-0x0000000075740000-memory.dmp
            Filesize

            7.7MB

          • memory/1900-30-0x0000000074F90000-0x0000000075740000-memory.dmp
            Filesize

            7.7MB

          • memory/1900-29-0x0000000006620000-0x000000000662A000-memory.dmp
            Filesize

            40KB

          • memory/1900-28-0x00000000064F0000-0x000000000650E000-memory.dmp
            Filesize

            120KB

          • memory/1900-27-0x00000000059F0000-0x00000000059FA000-memory.dmp
            Filesize

            40KB

          • memory/1900-19-0x0000000074F90000-0x0000000075740000-memory.dmp
            Filesize

            7.7MB

          • memory/4864-3-0x00000000052F0000-0x0000000005382000-memory.dmp
            Filesize

            584KB

          • memory/4864-5-0x0000000074F90000-0x0000000075740000-memory.dmp
            Filesize

            7.7MB

          • memory/4864-17-0x0000000074F90000-0x0000000075740000-memory.dmp
            Filesize

            7.7MB

          • memory/4864-0-0x0000000074F9E000-0x0000000074F9F000-memory.dmp
            Filesize

            4KB

          • memory/4864-4-0x0000000005230000-0x000000000523A000-memory.dmp
            Filesize

            40KB

          • memory/4864-2-0x00000000058A0000-0x0000000005E44000-memory.dmp
            Filesize

            5.6MB

          • memory/4864-1-0x0000000000790000-0x0000000000878000-memory.dmp
            Filesize

            928KB

          • memory/4864-10-0x0000000006A70000-0x0000000006AF4000-memory.dmp
            Filesize

            528KB

          • memory/4864-9-0x0000000074F90000-0x0000000075740000-memory.dmp
            Filesize

            7.7MB

          • memory/4864-8-0x0000000074F9E000-0x0000000074F9F000-memory.dmp
            Filesize

            4KB

          • memory/4864-7-0x00000000069D0000-0x0000000006A6C000-memory.dmp
            Filesize

            624KB

          • memory/4864-6-0x00000000053C0000-0x00000000053CA000-memory.dmp
            Filesize

            40KB