Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    07-03-2024 16:31

General

  • Target

    b927206da06227fcf2b5244e1bc171a2.exe

  • Size

    215KB

  • MD5

    b927206da06227fcf2b5244e1bc171a2

  • SHA1

    6c06941acaeffcdf6f72f43be27758e8cddde911

  • SHA256

    ae07baacc615ecfcdf7547d7e2de432255589b45a9969e39718adeee231d05f6

  • SHA512

    f6bf5fe82197c1b77a4b89bb0a8d1296ce6c9ddb1d0e2c7c3cc08a20a02c696e3236d1f5e64ec562bb379284a6d3718e96abc3e585610d12a714b9ef742198eb

  • SSDEEP

    3072:/PcNUzqXcRCmJn/tc3Y7QSWWknGB9BzdI8SvrVu5GRG/xpH8yMNyUf/DwKJ90DZn:nGUV1G3Y7QxWeS5dY5Ral8oiw69yWAQ2

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

johnson553.duckdns.org:1877

79.134.225.89:1877

Mutex

21eb8156-7276-4299-ad23-a45c042c7bd4

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    79.134.225.89

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-06-04T20:13:29.853736136Z

  • 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

    1877

  • default_group

    Johnson Nano

  • 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

    21eb8156-7276-4299-ad23-a45c042c7bd4

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    johnson553.duckdns.org

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b927206da06227fcf2b5244e1bc171a2.exe
    "C:\Users\Admin\AppData\Local\Temp\b927206da06227fcf2b5244e1bc171a2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2484
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
      "C:\Users\Admin\AppData\Local\Temp\b927206da06227fcf2b5244e1bc171a2.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2724
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DDP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1B5D.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2508

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp1B5D.tmp

    Filesize

    1KB

    MD5

    ae766004c0d8792953bafffe8f6a2e3b

    SHA1

    14b12f27543a401e2fe0af8052e116cab0032426

    SHA256

    1abdd9b6a6b84e4ba1af1282dc84ce276c59ba253f4c4af05fea498a4fd99540

    SHA512

    e530da4a5d4336fc37838d0e93b5eb3804b9c489c71f6954a47fc81a4c655bb72ec493e109cf96e6e3617d7623ac80697ad3bbd5ffc6281bafc8b34dca5e6567

  • memory/2484-0-0x0000000000400000-0x0000000000405000-memory.dmp

    Filesize

    20KB

  • memory/2484-1-0x0000000000280000-0x0000000000282000-memory.dmp

    Filesize

    8KB

  • memory/2724-6-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2724-4-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2724-7-0x0000000074A50000-0x0000000074FFB000-memory.dmp

    Filesize

    5.7MB

  • memory/2724-8-0x0000000074A50000-0x0000000074FFB000-memory.dmp

    Filesize

    5.7MB

  • memory/2724-9-0x00000000001E0000-0x0000000000220000-memory.dmp

    Filesize

    256KB

  • memory/2724-2-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2724-14-0x00000000001E0000-0x0000000000220000-memory.dmp

    Filesize

    256KB

  • memory/2724-15-0x00000000001E0000-0x0000000000220000-memory.dmp

    Filesize

    256KB

  • memory/2724-16-0x0000000074A50000-0x0000000074FFB000-memory.dmp

    Filesize

    5.7MB

  • memory/2724-17-0x0000000074A50000-0x0000000074FFB000-memory.dmp

    Filesize

    5.7MB

  • memory/2724-18-0x00000000001E0000-0x0000000000220000-memory.dmp

    Filesize

    256KB

  • memory/2724-19-0x00000000001E0000-0x0000000000220000-memory.dmp

    Filesize

    256KB

  • memory/2724-20-0x00000000001E0000-0x0000000000220000-memory.dmp

    Filesize

    256KB