Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-06-2024 09:31

General

  • Target

    41d27d71597c9d1163fb58a816223962.exe

  • Size

    585KB

  • MD5

    41d27d71597c9d1163fb58a816223962

  • SHA1

    2ae197a2724967fb0ae77ee0c20d95d354b9e5cb

  • SHA256

    b4a76ec2287a65963ea978ae7911b8c42c3411a21c995463985599d975e9960c

  • SHA512

    555aa48eaa46f83933e34c6e8ecaf79c8f1756fb9de79181e4132bc2d02c5789abba90458ad347a374f34fc829f83b36d6666f64a657bf7e99ca5cb9aac2e1a0

  • SSDEEP

    12288:2aYEnxStMSe+LQMNQ7ZQhIyOQSNSY2CNZ+TB29JvNgRh:J/nxSiSCMNQFwt3Jx8gB29Jv2

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

2023endofyear.duckdns.org:15170

127.0.0.1:15170

Mutex

68e7ea47-3f3c-4af7-9707-6d09d0468009

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2023-12-29T09:19:37.611227236Z

  • 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

    15170

  • default_group

    GLOBAL

  • 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

    68e7ea47-3f3c-4af7-9707-6d09d0468009

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    2023endofyear.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.

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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).

  • Creates scheduled task(s) 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41d27d71597c9d1163fb58a816223962.exe
    "C:\Users\Admin\AppData\Local\Temp\41d27d71597c9d1163fb58a816223962.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1696
    • 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\41d27d71597c9d1163fb58a816223962.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1708
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\dsiayzgxX.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2244
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\dsiayzgxX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7223.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2188
    • C:\Users\Admin\AppData\Local\Temp\41d27d71597c9d1163fb58a816223962.exe
      "C:\Users\Admin\AppData\Local\Temp\41d27d71597c9d1163fb58a816223962.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2604
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "PCI Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7639.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4796
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "PCI Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp785D.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3832

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Replay Monitor

Loading Replay Monitor...

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

    fdc18685ffd5140a2e2fe5e2819c27d9

    SHA1

    ecd8ddeace6b0d744a329becde68018cddbec9dd

    SHA256

    63e6ca7f145af428d2538933ae1d03f93f3504615c1a166e96b7fd131184fbe9

    SHA512

    2734cec8bc629c9f8fc8f7676c76c203473cdb957f0a237c2ceb3e93c08d4d6a7b45b8ab8423d2a4289b460ee92ac953f7a09562f7abea21777f7ae8093dca3a

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kte2e2me.wxl.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp7223.tmp
    Filesize

    1KB

    MD5

    0fcb737f0a674e5f11567a7e3ab19375

    SHA1

    dd11b9beae7758652a487505cb235955068568f2

    SHA256

    b90e700e86cba0bfedb58b049ced41ba348164f3f5be093927667d3f46de8e56

    SHA512

    c52879fbcf1a14b2266b493183dd719845042b167b69efe1712edd9d16d9f2cfc51426650c95ec47bba7dddb0aac987111a98a22c18c498ab029eb54e7bc553a

  • C:\Users\Admin\AppData\Local\Temp\tmp7639.tmp
    Filesize

    1KB

    MD5

    05589205dc8e59621292cc8574379849

    SHA1

    560d6d90ca08f886d81f591e737aa7e8e8dd0b78

    SHA256

    183ea387a9a8ff41d986ee844f36508ff674eaf86e287ea81ee4725454dde0fd

    SHA512

    0ec8548b36e548c395797d96777a935c2ab1824dd0327a5eec04c0c118e444aff735b76579940685b09bbf69469bea9fc08c07aef3b6b63f1b72da446ca3d394

  • C:\Users\Admin\AppData\Local\Temp\tmp785D.tmp
    Filesize

    1KB

    MD5

    bbb0d424bb7cb3b0e6aeb68cf82b8f5f

    SHA1

    7e95dcd21a27ee53e5c23ed5a163df56a43d572a

    SHA256

    08d6bee474edf0151a0d8ff942ba9e6a1efe069585c63477abd1c7bd8046e130

    SHA512

    0dc790a415f9717f6e7633c1d5f2749a2eca5582c5bbe114119c3ddba6d4e4d0df48029622e2fe07f94d8ae97c334b88691b7721da50ada261449769ae31d466

  • memory/1696-4-0x0000000074BE0000-0x0000000075390000-memory.dmp
    Filesize

    7.7MB

  • memory/1696-7-0x00000000059B0000-0x00000000059B8000-memory.dmp
    Filesize

    32KB

  • memory/1696-8-0x00000000060E0000-0x00000000060EC000-memory.dmp
    Filesize

    48KB

  • memory/1696-9-0x00000000068E0000-0x000000000695C000-memory.dmp
    Filesize

    496KB

  • memory/1696-10-0x0000000008F00000-0x0000000008F9C000-memory.dmp
    Filesize

    624KB

  • memory/1696-6-0x0000000005680000-0x0000000005694000-memory.dmp
    Filesize

    80KB

  • memory/1696-5-0x00000000055D0000-0x00000000055DA000-memory.dmp
    Filesize

    40KB

  • memory/1696-0-0x0000000074BEE000-0x0000000074BEF000-memory.dmp
    Filesize

    4KB

  • memory/1696-3-0x0000000005510000-0x00000000055A2000-memory.dmp
    Filesize

    584KB

  • memory/1696-2-0x00000000059C0000-0x0000000005F64000-memory.dmp
    Filesize

    5.6MB

  • memory/1696-48-0x0000000074BE0000-0x0000000075390000-memory.dmp
    Filesize

    7.7MB

  • memory/1696-1-0x0000000000A90000-0x0000000000B28000-memory.dmp
    Filesize

    608KB

  • memory/1708-92-0x0000000007AF0000-0x0000000007B0A000-memory.dmp
    Filesize

    104KB

  • memory/1708-63-0x0000000075490000-0x00000000754DC000-memory.dmp
    Filesize

    304KB

  • memory/1708-34-0x0000000074BE0000-0x0000000075390000-memory.dmp
    Filesize

    7.7MB

  • memory/1708-101-0x0000000074BE0000-0x0000000075390000-memory.dmp
    Filesize

    7.7MB

  • memory/1708-15-0x0000000002BB0000-0x0000000002BE6000-memory.dmp
    Filesize

    216KB

  • memory/1708-21-0x00000000054B0000-0x00000000054D2000-memory.dmp
    Filesize

    136KB

  • memory/1708-23-0x0000000005D10000-0x0000000005D76000-memory.dmp
    Filesize

    408KB

  • memory/1708-16-0x0000000074BE0000-0x0000000075390000-memory.dmp
    Filesize

    7.7MB

  • memory/1708-22-0x0000000005BA0000-0x0000000005C06000-memory.dmp
    Filesize

    408KB

  • memory/1708-49-0x0000000006480000-0x000000000649E000-memory.dmp
    Filesize

    120KB

  • memory/1708-50-0x0000000006A10000-0x0000000006A5C000-memory.dmp
    Filesize

    304KB

  • memory/1708-18-0x0000000074BE0000-0x0000000075390000-memory.dmp
    Filesize

    7.7MB

  • memory/1708-33-0x0000000005E40000-0x0000000006194000-memory.dmp
    Filesize

    3.3MB

  • memory/1708-91-0x00000000079F0000-0x0000000007A04000-memory.dmp
    Filesize

    80KB

  • memory/1708-89-0x00000000079B0000-0x00000000079C1000-memory.dmp
    Filesize

    68KB

  • memory/1708-86-0x00000000075A0000-0x00000000075BA000-memory.dmp
    Filesize

    104KB

  • memory/1708-84-0x0000000007460000-0x0000000007503000-memory.dmp
    Filesize

    652KB

  • memory/1708-62-0x0000000006A60000-0x0000000006A92000-memory.dmp
    Filesize

    200KB

  • memory/1708-82-0x00000000069E0000-0x00000000069FE000-memory.dmp
    Filesize

    120KB

  • memory/2244-17-0x0000000004E80000-0x00000000054A8000-memory.dmp
    Filesize

    6.2MB

  • memory/2244-93-0x0000000007420000-0x0000000007428000-memory.dmp
    Filesize

    32KB

  • memory/2244-100-0x0000000074BE0000-0x0000000075390000-memory.dmp
    Filesize

    7.7MB

  • memory/2244-85-0x0000000007750000-0x0000000007DCA000-memory.dmp
    Filesize

    6.5MB

  • memory/2244-35-0x0000000074BE0000-0x0000000075390000-memory.dmp
    Filesize

    7.7MB

  • memory/2244-87-0x0000000007180000-0x000000000718A000-memory.dmp
    Filesize

    40KB

  • memory/2244-88-0x0000000007380000-0x0000000007416000-memory.dmp
    Filesize

    600KB

  • memory/2244-73-0x0000000075490000-0x00000000754DC000-memory.dmp
    Filesize

    304KB

  • memory/2244-90-0x0000000007330000-0x000000000733E000-memory.dmp
    Filesize

    56KB

  • memory/2244-37-0x0000000074BE0000-0x0000000075390000-memory.dmp
    Filesize

    7.7MB

  • memory/2244-19-0x0000000074BE0000-0x0000000075390000-memory.dmp
    Filesize

    7.7MB

  • memory/2604-61-0x0000000006480000-0x000000000648A000-memory.dmp
    Filesize

    40KB

  • memory/2604-108-0x0000000006D30000-0x0000000006D3E000-memory.dmp
    Filesize

    56KB

  • memory/2604-60-0x0000000006430000-0x000000000644E000-memory.dmp
    Filesize

    120KB

  • memory/2604-36-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/2604-59-0x0000000005800000-0x000000000580C000-memory.dmp
    Filesize

    48KB

  • memory/2604-104-0x0000000006CD0000-0x0000000006CE2000-memory.dmp
    Filesize

    72KB

  • memory/2604-105-0x0000000006CE0000-0x0000000006CFA000-memory.dmp
    Filesize

    104KB

  • memory/2604-106-0x0000000006D10000-0x0000000006D1E000-memory.dmp
    Filesize

    56KB

  • memory/2604-107-0x0000000006D20000-0x0000000006D32000-memory.dmp
    Filesize

    72KB

  • memory/2604-58-0x00000000057F0000-0x00000000057FA000-memory.dmp
    Filesize

    40KB

  • memory/2604-115-0x0000000006DF0000-0x0000000006E04000-memory.dmp
    Filesize

    80KB

  • memory/2604-114-0x0000000006DB0000-0x0000000006DDE000-memory.dmp
    Filesize

    184KB

  • memory/2604-113-0x0000000006DA0000-0x0000000006DAE000-memory.dmp
    Filesize

    56KB

  • memory/2604-112-0x0000000006D90000-0x0000000006DA4000-memory.dmp
    Filesize

    80KB

  • memory/2604-111-0x0000000006D60000-0x0000000006D70000-memory.dmp
    Filesize

    64KB

  • memory/2604-110-0x0000000006D50000-0x0000000006D64000-memory.dmp
    Filesize

    80KB

  • memory/2604-109-0x0000000006D40000-0x0000000006D4C000-memory.dmp
    Filesize

    48KB