Analysis

  • max time kernel
    137s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22/03/2025, 06:10

General

  • Target

    4cc3e6fe699a661d5a6ea786a93cfacd887570860b351476e5f5a1d3616bf922.exe

  • Size

    920KB

  • MD5

    3e88b60d7a5480672d773508d6d959fb

  • SHA1

    5226af2c7cf9ac308bb154506113a2e1dd6abebe

  • SHA256

    4cc3e6fe699a661d5a6ea786a93cfacd887570860b351476e5f5a1d3616bf922

  • SHA512

    0baf73952ebdb57dad095c047b70d81d357cacfcf7a64b94bf5ac347df59a3aecb362c2e80ce145216860c3fc07ed39ee86d1093c04d42a4bc7e3110b39b0528

  • SSDEEP

    24576:7dtP2cbksTpugRNJI5kFMJF9OWjwjLOjZD:4gq1

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

91.236.116.142:5888

Mutex

d995ed82-bf13-4043-b564-f5f89f8c5209

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    91.236.116.142

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2017-01-07T03:01:54.729778636Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    5888

  • default_group

    Spy

  • 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

    d995ed82-bf13-4043-b564-f5f89f8c5209

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    91.236.116.142

  • primary_dns_server

    8.8.8.8

  • 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

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • NanoCore

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

  • Nanocore family
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4cc3e6fe699a661d5a6ea786a93cfacd887570860b351476e5f5a1d3616bf922.exe
    "C:\Users\Admin\AppData\Local\Temp\4cc3e6fe699a661d5a6ea786a93cfacd887570860b351476e5f5a1d3616bf922.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2252
    • C:\Users\Admin\AppData\Roaming\app.exe
      "C:\Users\Admin\AppData\Roaming\app.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2820
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_compiler.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\aspnet_compiler.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2516
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "SCSI Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1BDA.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:2908

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab4615.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\tmp1BDA.tmp

    Filesize

    1KB

    MD5

    d81eb43d26d4511c44151cba2eb45983

    SHA1

    135c98e039c6ab35d4e9564f15f9c56dc9dbeb9a

    SHA256

    a72a8f6434d6b0fb904db5adc8cab891d12c53b4ac1435dfd13df51f84a2d4d0

    SHA512

    b5895c19159d23a8fa312967e47d0855ac6f8f314f8931f54469b0c0079a22e9e00a5eaf6729761f74d54e111454d49813e658243e920a9c3434a5576cdda721

  • \Users\Admin\AppData\Roaming\app.exe

    Filesize

    926KB

    MD5

    19011d5156eebd5bef8206666864c099

    SHA1

    f5821b885a7ea3407f5507c89d1cf4bddc2660a2

    SHA256

    40eefcc987ab356a1219b275fce93d3fa3e14393fd13deec329ec51335d99abd

    SHA512

    4453489a2a89ba1af4faf643ba67587ea5964ef504cd4dca21224daba95ac407d87f4a4137407cb6999b54eed006007ce5877bbd16aaeeab892018e7e2a2319a

  • memory/2252-0-0x00000000741C1000-0x00000000741C2000-memory.dmp

    Filesize

    4KB

  • memory/2252-1-0x00000000741C0000-0x000000007476B000-memory.dmp

    Filesize

    5.7MB

  • memory/2252-2-0x00000000741C0000-0x000000007476B000-memory.dmp

    Filesize

    5.7MB

  • memory/2252-10-0x00000000741C0000-0x000000007476B000-memory.dmp

    Filesize

    5.7MB

  • memory/2252-11-0x00000000741C0000-0x000000007476B000-memory.dmp

    Filesize

    5.7MB

  • memory/2252-12-0x00000000741C0000-0x000000007476B000-memory.dmp

    Filesize

    5.7MB

  • memory/2252-30-0x00000000741C0000-0x000000007476B000-memory.dmp

    Filesize

    5.7MB

  • memory/2516-61-0x0000000000080000-0x00000000000B8000-memory.dmp

    Filesize

    224KB

  • memory/2516-53-0x0000000000080000-0x00000000000B8000-memory.dmp

    Filesize

    224KB

  • memory/2516-47-0x0000000000080000-0x00000000000B8000-memory.dmp

    Filesize

    224KB

  • memory/2516-45-0x0000000000080000-0x00000000000B8000-memory.dmp

    Filesize

    224KB

  • memory/2516-50-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2516-58-0x0000000000080000-0x00000000000B8000-memory.dmp

    Filesize

    224KB

  • memory/2516-54-0x0000000000080000-0x00000000000B8000-memory.dmp

    Filesize

    224KB

  • memory/2516-48-0x0000000000080000-0x00000000000B8000-memory.dmp

    Filesize

    224KB

  • memory/2516-49-0x0000000000080000-0x00000000000B8000-memory.dmp

    Filesize

    224KB

  • memory/2820-41-0x00000000741C0000-0x000000007476B000-memory.dmp

    Filesize

    5.7MB

  • memory/2820-42-0x00000000741C0000-0x000000007476B000-memory.dmp

    Filesize

    5.7MB

  • memory/2820-43-0x00000000741C0000-0x000000007476B000-memory.dmp

    Filesize

    5.7MB

  • memory/2820-62-0x00000000741C0000-0x000000007476B000-memory.dmp

    Filesize

    5.7MB

  • memory/2820-31-0x00000000741C0000-0x000000007476B000-memory.dmp

    Filesize

    5.7MB