Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    04-01-2025 14:12

General

  • Target

    0c1c0a2aab61208228f79c88d9d119953f0095825ccbdf37a6e4e1c041a342a2N.exe

  • Size

    1.3MB

  • MD5

    b0de8f50d0dbcbdba16c871edd0383d0

  • SHA1

    3e341c3c4ad059aa264786c984a11b3e4dd2a55c

  • SHA256

    0c1c0a2aab61208228f79c88d9d119953f0095825ccbdf37a6e4e1c041a342a2

  • SHA512

    261fd14f92b115a27d305a6e10cf1ef244dc4a1459f8afe977367bb2e5ae28f6a8b4d209570eac3c88d5b2a4374afb4e7910bde14286d84f8b1bd1bac0061f03

  • SSDEEP

    24576:xdtP2cbksTpugRNJI50FMJFMFggMFgMJFggMJFMFggMFMJFMFMFMFgggMFggMFgL:Cgqe

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

    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

  • 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\0c1c0a2aab61208228f79c88d9d119953f0095825ccbdf37a6e4e1c041a342a2N.exe
    "C:\Users\Admin\AppData\Local\Temp\0c1c0a2aab61208228f79c88d9d119953f0095825ccbdf37a6e4e1c041a342a2N.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:2504
    • 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:2216
      • 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:2388
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "SCSI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpBB82.tmp"
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1284

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    dc785b9bd7f48a10270561183e02b516

    SHA1

    c4560f2b32cea8018fa719c48cfca416daed10af

    SHA256

    19525bf9a1d2b06750746a9162af037a3b8cb6baf8b6c9553ba5a97e88a8e330

    SHA512

    52ad8b545be857f21521def454c513f0aec48e93f70120891617e60975857fa494b1d740c0b4f14ed26b4c2069fd942bbc61546840c140444984ed0967342846

  • C:\Users\Admin\AppData\Local\Temp\CabF132.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\tmpBB82.tmp

    Filesize

    1KB

    MD5

    d81eb43d26d4511c44151cba2eb45983

    SHA1

    135c98e039c6ab35d4e9564f15f9c56dc9dbeb9a

    SHA256

    a72a8f6434d6b0fb904db5adc8cab891d12c53b4ac1435dfd13df51f84a2d4d0

    SHA512

    b5895c19159d23a8fa312967e47d0855ac6f8f314f8931f54469b0c0079a22e9e00a5eaf6729761f74d54e111454d49813e658243e920a9c3434a5576cdda721

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

    Filesize

    1.3MB

    MD5

    fe0c25e7b68e4556e4bcc8ac96ead0d2

    SHA1

    825964b5b65b0b5e20241b148ab8dc070aa979bb

    SHA256

    77605bc0875131485206c1d07e4563f3bc7a94c22be80a130f7d852cbcf1028b

    SHA512

    8860374f34a573573a580650da43d98874c20d458acb3d2b50a600b58b098e7d07ae3d6a8dd79d0606ef3f11b58f830b9973e6ace1f550506da681b9d8d14f8d

  • memory/2216-45-0x0000000074D90000-0x000000007533B000-memory.dmp

    Filesize

    5.7MB

  • memory/2216-46-0x0000000074D90000-0x000000007533B000-memory.dmp

    Filesize

    5.7MB

  • memory/2216-34-0x0000000074D90000-0x000000007533B000-memory.dmp

    Filesize

    5.7MB

  • memory/2216-33-0x0000000074D90000-0x000000007533B000-memory.dmp

    Filesize

    5.7MB

  • memory/2216-32-0x0000000074D90000-0x000000007533B000-memory.dmp

    Filesize

    5.7MB

  • memory/2216-62-0x0000000074D90000-0x000000007533B000-memory.dmp

    Filesize

    5.7MB

  • memory/2216-47-0x0000000074D90000-0x000000007533B000-memory.dmp

    Filesize

    5.7MB

  • memory/2388-51-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2388-54-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2388-59-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2388-61-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2388-49-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2388-57-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2388-55-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2388-53-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2504-0-0x0000000074D91000-0x0000000074D92000-memory.dmp

    Filesize

    4KB

  • memory/2504-13-0x0000000074D90000-0x000000007533B000-memory.dmp

    Filesize

    5.7MB

  • memory/2504-12-0x0000000074D90000-0x000000007533B000-memory.dmp

    Filesize

    5.7MB

  • memory/2504-11-0x0000000074D90000-0x000000007533B000-memory.dmp

    Filesize

    5.7MB

  • memory/2504-31-0x0000000074D90000-0x000000007533B000-memory.dmp

    Filesize

    5.7MB

  • memory/2504-8-0x0000000074D90000-0x000000007533B000-memory.dmp

    Filesize

    5.7MB