Resubmissions

07/03/2025, 11:50

250307-nztbcazqx8 10

07/03/2025, 07:24

250307-h8ftqawtft 10

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/03/2025, 07:24

General

  • Target

    d3d5963442e6c36209ec3b38d4e16600283423af9c2a212291bb6cd7e8a837e7.exe

  • Size

    3.7MB

  • MD5

    ef284d2e02d57b7090632e1bf06b8fa3

  • SHA1

    85c5c5dc98d3d49478635f1d846761ab21ff7827

  • SHA256

    d3d5963442e6c36209ec3b38d4e16600283423af9c2a212291bb6cd7e8a837e7

  • SHA512

    2d2e4c7d85626be637b5f959b72de9493759adfff7a6e4a7a640f7a02102b68714f039f85570770952f9b7546a6664c0f7879fc5e07ff3a83e630808069dfb57

  • SSDEEP

    3072:WM/ZmolMbeDeDejyCeaev0beJ0kXC0ex75qlyrBmkepbe3eTLe3UzoeyeYHIHO+r:

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

backu4734.duckdns.org:8092

Mutex

ccf3c62d-d356-4a80-bb94-307bc35a5e01

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    backu4734.duckdns.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-01-05T15:22:20.555580436Z

  • 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

    8092

  • default_group

    Backup

  • 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

    ccf3c62d-d356-4a80-bb94-307bc35a5e01

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    backu4734.duckdns.org

  • 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
  • Windows security bypass 2 TTPs 3 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Windows security modification 2 TTPs 4 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 13 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • 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 12 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\d3d5963442e6c36209ec3b38d4e16600283423af9c2a212291bb6cd7e8a837e7.exe
    "C:\Users\Admin\AppData\Local\Temp\d3d5963442e6c36209ec3b38d4e16600283423af9c2a212291bb6cd7e8a837e7.exe"
    1⤵
    • Windows security bypass
    • Checks computer location settings
    • Windows security modification
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3764
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Windows\Cursors\dbe9ct81Se8a4fj44Ve\svchost.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2592
    • 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\d3d5963442e6c36209ec3b38d4e16600283423af9c2a212291bb6cd7e8a837e7.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:736
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Windows\Cursors\dbe9ct81Se8a4fj44Ve\svchost.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4064
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3104
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:1224
    • C:\Users\Admin\AppData\Local\Temp\d3d5963442e6c36209ec3b38d4e16600283423af9c2a212291bb6cd7e8a837e7.exe
      "C:\Users\Admin\AppData\Local\Temp\d3d5963442e6c36209ec3b38d4e16600283423af9c2a212291bb6cd7e8a837e7.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:3664
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "UDP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDDBD.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2976
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "UDP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDE2C.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3068
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3764 -s 1656
      2⤵
      • Program crash
      PID:4828
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3764 -ip 3764
    1⤵
      PID:4104

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      18KB

      MD5

      b8dd95259daa6c8dd057c80315b08bb7

      SHA1

      b9e1ed7af3ec9043598180490865f9f60a3b6c72

      SHA256

      7066e9bffb0a86435fe64352d350c030adc2c5776917a64cbcd597d2f5ac1d12

      SHA512

      c0f041dc8def597a2e5940b4763ddaf6d7cf921fc1970d05e6d3dc149752138214f64ad731ea377da75de38ee650e131df231cd0b0085a163036eb62b493e618

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      18KB

      MD5

      b81babf13283213e1bd37fcef790868c

      SHA1

      42b655fdf3bb9f12dd692954dcc2509c108546d3

      SHA256

      0bebe499a467b55e9596364beffb0ef626cab410448053f58957b61d9c72352d

      SHA512

      339b724b53259114b182fe08c2d5fc16e1e5337f92d0f46f1b7ea5f8ab0b21c400d297fa97a1c4bfc1b71dd9d3862df0aa256d9d389bc3d085fb7d90e38387e1

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qvl2b04r.pez.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

      Filesize

      1KB

      MD5

      3fbf14339a82779a96ebe15d61e84dc7

      SHA1

      11a57b2c1bfb3559d4b2d09054d4fa63912d260c

      SHA256

      c9f9a132e24f96a42e87d7e5596f991666c4c208fd5eceddb14b8202f30e0b9a

      SHA512

      94f2a2d8982183cf69ae981da42b47b97d3db46b7612c8eeddf348d27c4b4c0a8e0cdc8e42f17da826673dda75e24d7e8e0e3be9690f455dca70ada0d5eeb429

    • C:\Users\Admin\AppData\Local\Temp\tmpDE2C.tmp

      Filesize

      1KB

      MD5

      c1c4b266e129249076bbe8a15cc5e06c

      SHA1

      312b8173c264245c834eee91e05dcca845c341f8

      SHA256

      f336d06dcadca621be6b2dc9493dcb84d871497e65142bc9fdd72c9f250a1b7b

      SHA512

      0f02ec7700f89d95d29014eec42d13c85234351c3fe1dc6a3efeea52ea76ca4bea3151567a6c798b5ce658d481b424646b43d93e95ccad897356a87a25d45041

    • memory/736-50-0x0000000006F40000-0x0000000006F72000-memory.dmp

      Filesize

      200KB

    • memory/736-14-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB

    • memory/736-91-0x00000000075D0000-0x00000000075D8000-memory.dmp

      Filesize

      32KB

    • memory/736-71-0x0000000007180000-0x000000000719E000-memory.dmp

      Filesize

      120KB

    • memory/736-100-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB

    • memory/736-86-0x0000000007530000-0x00000000075C6000-memory.dmp

      Filesize

      600KB

    • memory/736-51-0x000000006F9A0000-0x000000006F9EC000-memory.dmp

      Filesize

      304KB

    • memory/2592-13-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB

    • memory/2592-12-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB

    • memory/2592-101-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB

    • memory/2592-17-0x0000000005A30000-0x0000000005A52000-memory.dmp

      Filesize

      136KB

    • memory/2592-73-0x000000006F9A0000-0x000000006F9EC000-memory.dmp

      Filesize

      304KB

    • memory/2592-11-0x00000000053C0000-0x00000000059E8000-memory.dmp

      Filesize

      6.2MB

    • memory/2592-8-0x0000000004C10000-0x0000000004C46000-memory.dmp

      Filesize

      216KB

    • memory/2592-38-0x0000000005CB0000-0x0000000006004000-memory.dmp

      Filesize

      3.3MB

    • memory/2592-10-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB

    • memory/3664-112-0x0000000005410000-0x000000000541A000-memory.dmp

      Filesize

      40KB

    • memory/3664-113-0x0000000005670000-0x000000000568E000-memory.dmp

      Filesize

      120KB

    • memory/3664-114-0x00000000057C0000-0x00000000057CA000-memory.dmp

      Filesize

      40KB

    • memory/3664-102-0x0000000000400000-0x000000000043A000-memory.dmp

      Filesize

      232KB

    • memory/3764-104-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB

    • memory/3764-0-0x00000000744BE000-0x00000000744BF000-memory.dmp

      Filesize

      4KB

    • memory/3764-103-0x00000000744BE000-0x00000000744BF000-memory.dmp

      Filesize

      4KB

    • memory/3764-2-0x0000000005B30000-0x0000000005BCC000-memory.dmp

      Filesize

      624KB

    • memory/3764-7-0x0000000007E50000-0x0000000007EE2000-memory.dmp

      Filesize

      584KB

    • memory/3764-1-0x0000000000E10000-0x00000000011C2000-memory.dmp

      Filesize

      3.7MB

    • memory/3764-115-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB

    • memory/3764-9-0x0000000005D40000-0x0000000005D4A000-memory.dmp

      Filesize

      40KB

    • memory/3764-3-0x0000000005C10000-0x0000000005CAC000-memory.dmp

      Filesize

      624KB

    • memory/3764-4-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB

    • memory/3764-5-0x00000000075A0000-0x0000000007B44000-memory.dmp

      Filesize

      5.6MB

    • memory/4064-18-0x0000000004DC0000-0x0000000004E26000-memory.dmp

      Filesize

      408KB

    • memory/4064-90-0x0000000007360000-0x000000000737A000-memory.dmp

      Filesize

      104KB

    • memory/4064-99-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB

    • memory/4064-89-0x0000000007260000-0x0000000007274000-memory.dmp

      Filesize

      80KB

    • memory/4064-88-0x0000000007250000-0x000000000725E000-memory.dmp

      Filesize

      56KB

    • memory/4064-87-0x0000000007220000-0x0000000007231000-memory.dmp

      Filesize

      68KB

    • memory/4064-85-0x0000000007090000-0x000000000709A000-memory.dmp

      Filesize

      40KB

    • memory/4064-83-0x0000000007660000-0x0000000007CDA000-memory.dmp

      Filesize

      6.5MB

    • memory/4064-84-0x0000000007020000-0x000000000703A000-memory.dmp

      Filesize

      104KB

    • memory/4064-72-0x0000000006EF0000-0x0000000006F93000-memory.dmp

      Filesize

      652KB

    • memory/4064-52-0x000000006F9A0000-0x000000006F9EC000-memory.dmp

      Filesize

      304KB

    • memory/4064-48-0x0000000005CD0000-0x0000000005CEE000-memory.dmp

      Filesize

      120KB

    • memory/4064-49-0x00000000061A0000-0x00000000061EC000-memory.dmp

      Filesize

      304KB

    • memory/4064-19-0x0000000005690000-0x00000000056F6000-memory.dmp

      Filesize

      408KB

    • memory/4064-16-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB

    • memory/4064-15-0x00000000744B0000-0x0000000074C60000-memory.dmp

      Filesize

      7.7MB