Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250129-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/02/2025, 03:46

General

  • Target

    P I copy.docs.x.exe

  • Size

    701KB

  • MD5

    87e76b3ab65fafd1506f411841c73e94

  • SHA1

    3810482f5a3187ccf1dbc8ce4fc0752bb7e44c18

  • SHA256

    e207ac84a52789e4f93b901bdc24a0b9930759d50aab651cc3d5d1f3be7a3e44

  • SHA512

    c51ab6b12270d827de00eaccd212468e24ce5510b9b8e8fda36efc7792ed72d1c2321af7a6552a576e9dcb0bb0dbed7ba5345cb959a4460b8a934f6fc67521d3

  • SSDEEP

    12288:AYyPYswecl9ZzHS49uH5hYLl4D4i4uS8zpAzh33gyAmLxOjrIy6NYxYQL:cweKyILwXRA133gK2rIw

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

91.92.240.88:2777

Mutex

25449be1-a962-4d47-a9f7-c613578ec634

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    91.92.240.88

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-04-19T10:57:33.704241736Z

  • 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

    2777

  • 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

    25449be1-a962-4d47-a9f7-c613578ec634

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    91.92.240.88

  • 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.

  • Nanocore family
  • 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
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
    "C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4328
    • C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
      "C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe"
      2⤵
        PID:4204
      • C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe
        "C:\Users\Admin\AppData\Local\Temp\P I copy.docs.x.exe"
        2⤵
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1060
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DOS Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF51E.tmp"
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3340
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DOS Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF56D.tmp"
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:4888

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\P I copy.docs.x.exe.log

      Filesize

      1KB

      MD5

      8ec831f3e3a3f77e4a7b9cd32b48384c

      SHA1

      d83f09fd87c5bd86e045873c231c14836e76a05c

      SHA256

      7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

      SHA512

      26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

    • C:\Users\Admin\AppData\Local\Temp\tmpF51E.tmp

      Filesize

      1KB

      MD5

      01f9a86d9610760a6fef15b42f51421c

      SHA1

      6712e76ab3cde995d646c65b294201a63c23a221

      SHA256

      ce259ad39d30c453057fc465a0b4106ddbb7d5b01abdc01d41cf8f0d77a4f1e8

      SHA512

      10b5c22823e33eb169221ddfbc1119bb2c6e6ca61c143a90fb812973fe611df18afb4087d142b96705fdcd66bae880a29555ffd8eef85a68f3df6a69c7f97e04

    • C:\Users\Admin\AppData\Local\Temp\tmpF56D.tmp

      Filesize

      1KB

      MD5

      8f5713b14cee3089852f6c8d2a7a7d57

      SHA1

      8bffbea05715c6434ad593cce8a2c737f80ff788

      SHA256

      ab3ce102242c3144f87bcbfe83984a478821cd09e62c0e5211b2ab37dde02d2c

      SHA512

      82bd2378c2d6bb34a1ad3f2d26bfea583fc8403691bed6668521ba3e8bc7bdbdf142f872ddbc8e5251550f47c9bbee4eb3d0d6096f80d85259082cf68a454c72

    • memory/1060-11-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1060-28-0x0000000074960000-0x0000000075110000-memory.dmp

      Filesize

      7.7MB

    • memory/1060-27-0x0000000074960000-0x0000000075110000-memory.dmp

      Filesize

      7.7MB

    • memory/1060-26-0x0000000006B80000-0x0000000006B8A000-memory.dmp

      Filesize

      40KB

    • memory/1060-25-0x0000000005E30000-0x0000000005E4E000-memory.dmp

      Filesize

      120KB

    • memory/1060-24-0x0000000005B90000-0x0000000005B9A000-memory.dmp

      Filesize

      40KB

    • memory/1060-15-0x0000000074960000-0x0000000075110000-memory.dmp

      Filesize

      7.7MB

    • memory/1060-14-0x0000000074960000-0x0000000075110000-memory.dmp

      Filesize

      7.7MB

    • memory/4328-5-0x0000000005530000-0x00000000055CC000-memory.dmp

      Filesize

      624KB

    • memory/4328-10-0x0000000004CE0000-0x0000000004D5E000-memory.dmp

      Filesize

      504KB

    • memory/4328-9-0x0000000074960000-0x0000000075110000-memory.dmp

      Filesize

      7.7MB

    • memory/4328-16-0x0000000074960000-0x0000000075110000-memory.dmp

      Filesize

      7.7MB

    • memory/4328-8-0x000000007496E000-0x000000007496F000-memory.dmp

      Filesize

      4KB

    • memory/4328-7-0x0000000006580000-0x000000000659E000-memory.dmp

      Filesize

      120KB

    • memory/4328-6-0x0000000074960000-0x0000000075110000-memory.dmp

      Filesize

      7.7MB

    • memory/4328-0-0x000000007496E000-0x000000007496F000-memory.dmp

      Filesize

      4KB

    • memory/4328-4-0x0000000005480000-0x000000000548A000-memory.dmp

      Filesize

      40KB

    • memory/4328-3-0x00000000052C0000-0x0000000005352000-memory.dmp

      Filesize

      584KB

    • memory/4328-2-0x0000000005790000-0x0000000005D34000-memory.dmp

      Filesize

      5.6MB

    • memory/4328-1-0x0000000000830000-0x00000000008E6000-memory.dmp

      Filesize

      728KB