Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    02/03/2025, 04:36

General

  • Target

    bf66c57ddedff135697f519e883eb73817f95e3e591079c17b3ee6c5aa1f6598.exe

  • Size

    685KB

  • MD5

    09bca025504d51921fea0c27fed0f570

  • SHA1

    d07867cf868e70188478b98c3ee2d176f63a8153

  • SHA256

    bf66c57ddedff135697f519e883eb73817f95e3e591079c17b3ee6c5aa1f6598

  • SHA512

    8f1acb9ef6a1a60335949f1deab733ca43baaa53c73370fbdf4280deedd16eaf9a7411e09a152c0af59c6312a7a93c71b20ea30a3b03cf28212091783f5e533a

  • SSDEEP

    12288:o383le9ciUcsw99WWoQCIgeHPbH/jTlWv+AURMbHR9VlQPrVYV:a3Wcp9dtCI7HPL3EGfMhlCK

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

elroithegodofnsppd.duckdns.org:43366

elroithegodofnsppd.ddnsfree.com:43366

Mutex

4991469e-2d84-4048-8aed-20a53304961e

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    elroithegodofnsppd.ddnsfree.com

  • backup_dns_server

  • buffer_size

    65538

  • build_time

    2024-12-06T15:16:37.862063536Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    43366

  • default_group

    EROI MY GOD

  • enable_debug_mode

    true

  • gc_threshold

    1.0485772e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.0485772e+07

  • mutex

    4991469e-2d84-4048-8aed-20a53304961e

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    elroithegodofnsppd.duckdns.org

  • primary_dns_server

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    false

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8009

Signatures

  • NanoCore

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

  • Nanocore family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 7 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 3 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 5 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bf66c57ddedff135697f519e883eb73817f95e3e591079c17b3ee6c5aa1f6598.exe
    "C:\Users\Admin\AppData\Local\Temp\bf66c57ddedff135697f519e883eb73817f95e3e591079c17b3ee6c5aa1f6598.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2860
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\bf66c57ddedff135697f519e883eb73817f95e3e591079c17b3ee6c5aa1f6598.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2720
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\eVWFaJcLOjFwb.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2052
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eVWFaJcLOjFwb" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA8FC.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2584
    • C:\Users\Admin\AppData\Local\Temp\bf66c57ddedff135697f519e883eb73817f95e3e591079c17b3ee6c5aa1f6598.exe
      "C:\Users\Admin\AppData\Local\Temp\bf66c57ddedff135697f519e883eb73817f95e3e591079c17b3ee6c5aa1f6598.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:592
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAAD0.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1444
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAB1F.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2340

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpA8FC.tmp

    Filesize

    1KB

    MD5

    8c9ef4f5fe0804813ce6458c5f400730

    SHA1

    d26dd03999a9fbfbd588ad4ca6956982d8b3a75f

    SHA256

    a90f93c12cd506dd40526f2103b6fff80b23bb8a2129e0a3b5d2633c821738fa

    SHA512

    997f7754b40e18fdd89b2262e593ea1976aea9021bdf7dbaa1212851e1865e0dcc10aece9c01a300a682088bd6997694250403e114da6b1c5598bfaf3a8d66b1

  • C:\Users\Admin\AppData\Local\Temp\tmpAAD0.tmp

    Filesize

    1KB

    MD5

    4470d22aa72351f1f9cd955ef2212657

    SHA1

    85a717ff20895d58cffb775bae162d87fd8da5fa

    SHA256

    3140ae583b3b3eefdaf66e7edb59109078449693c724b211f0445edb70316003

    SHA512

    36202b63c6821e32634036ea98810f98762f122042a8fda60b75230530717fdb1fe163fabc4fe69cba5b1375dcaa1ae553267953faf787f18582cb6b3d736d89

  • C:\Users\Admin\AppData\Local\Temp\tmpAB1F.tmp

    Filesize

    1KB

    MD5

    cdf5683344404764a0f3592e9db8a5a1

    SHA1

    6705943b404de237cdd7080c05af25e2b1b6410c

    SHA256

    1ea0af7c86be3e61c281ada0470c6dcf178834380def1903b5bb78b49440ffff

    SHA512

    23c56873ca8520784cc1d6b0b4211b373fff6fb429872932e5274801d3b9d786566877cd16d1ffa0adca8c7aebb0b935701a0c071073edfbdb319002f99a182b

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    3018b7ae1f27a09ac7b900d65854348c

    SHA1

    4ddff32324bdf6f52bd0ae5468c14716cd8d0810

    SHA256

    b4d2c0947de45f9f99f549411deb67363951c5cb79ef43db040bd718a3f9789b

    SHA512

    d5deba5862c01298911b99c8c4cb7f42ae3285b806a4f38caf780e874220bc22fbdd7386c6fced840e86ca3fa422e0db9d37542caf9fde0a3c89f89fa392fad1

  • memory/592-21-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/592-25-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/592-41-0x00000000009D0000-0x00000000009DA000-memory.dmp

    Filesize

    40KB

  • memory/592-40-0x00000000009B0000-0x00000000009CE000-memory.dmp

    Filesize

    120KB

  • memory/592-39-0x00000000005C0000-0x00000000005CA000-memory.dmp

    Filesize

    40KB

  • memory/592-28-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/592-30-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/592-29-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/592-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/592-19-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/592-23-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2860-0-0x000000007410E000-0x000000007410F000-memory.dmp

    Filesize

    4KB

  • memory/2860-5-0x0000000074100000-0x00000000747EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2860-31-0x0000000074100000-0x00000000747EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2860-2-0x0000000074100000-0x00000000747EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2860-1-0x0000000000DC0000-0x0000000000E72000-memory.dmp

    Filesize

    712KB

  • memory/2860-3-0x0000000000B60000-0x0000000000B78000-memory.dmp

    Filesize

    96KB

  • memory/2860-4-0x000000007410E000-0x000000007410F000-memory.dmp

    Filesize

    4KB

  • memory/2860-6-0x0000000005560000-0x00000000055DE000-memory.dmp

    Filesize

    504KB