Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-05-2024 08:31

General

  • Target

    ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe

  • Size

    945KB

  • MD5

    a1f6c95a377a8c4c194a018614a6b463

  • SHA1

    cd8ce511a2ac57aec39892c0b27832a18e77fc39

  • SHA256

    ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c

  • SHA512

    fb93341612485022964338a421fbf6a77876d1efc492307e18a4fa28354643f8675cf685847ee8ffc9315232449f1c6b8aab674bb2beb0dc5e14ca6e020510a5

  • SSDEEP

    12288:gI0MYBl4BwkivLUyyqexCwG879IO0MgsaQ/nsy9LHr24HwmU3V50:50MYfMweyTivP7yO7aQ/nsWRQJV5

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

december2nd.ddns.net:65024

december2n.duckdns.org:65024

Mutex

2c009a56-c28c-48f4-8875-acf9e1222e9f

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    december2n.duckdns.org

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2024-02-17T09:12:36.211032636Z

  • 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

    65024

  • default_group

    NO GREE

  • 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

    2c009a56-c28c-48f4-8875-acf9e1222e9f

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    december2nd.ddns.net

  • primary_dns_server

  • 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
  • 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 17 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe
    "C:\Users\Admin\AppData\Local\Temp\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2084
    • 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\ee66629e98c3278017e7297d3b2b57aac9783a51a46b34046ccc866d10ba4f3c.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2732
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fupTmRCVq.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2764
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fupTmRCVq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8EE2.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3124
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4368
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp92E9.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2372
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp94CF.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2320

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

2
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

    109e2d337ab41a900329b150c53e2bd8

    SHA1

    d448bc6db7a77bcec12892369e17a587c17ccf80

    SHA256

    0fd4c507235538686913f104fb3854373fdc9c287041c652634bff1991fc98bf

    SHA512

    028a6c6d0a700ff1cd48cae87370d8da70d317bf9a9793778f50bee1f005f09725d133acb31861270e3e8df636ca01050c1b445ebf91abc13a558c8c0a5cc87c

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_50fovebt.114.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp8EE2.tmp
    Filesize

    1KB

    MD5

    05c226023ee985f2f04595b94152203a

    SHA1

    387c43dbb6ab0e984f13fa2a434430fab589fc89

    SHA256

    994606ea901207b37edd4b4f449279edaab2ea3eded449476de986b9bb5efadb

    SHA512

    26b98771a626af95691bfc31c8a53e388a080662f13af84d4466380c2039ff8f0d46c07615176f972eb0264447c210f9bd8b3ae674161164edf2929d9f8399f7

  • C:\Users\Admin\AppData\Local\Temp\tmp92E9.tmp
    Filesize

    1KB

    MD5

    8cad1b41587ced0f1e74396794f31d58

    SHA1

    11054bf74fcf5e8e412768035e4dae43aa7b710f

    SHA256

    3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

    SHA512

    99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

  • C:\Users\Admin\AppData\Local\Temp\tmp94CF.tmp
    Filesize

    1KB

    MD5

    e7d3c8560fe3e223f6dfa16c2066930e

    SHA1

    8e7729d6856489a28fb1fd6d2fbc3661d6394f18

    SHA256

    ec5bea77c4f620d54db7e0ea1ee81551631b7d9e42ae619deaa9a14f5f69415f

    SHA512

    f6a4f3bf0fa30a459a662250f502772f431c1cef5562f8a3e9770529c5d24e7226b46531af8c9e96a556f417a275caaa70df96fddaa482c5218bb6b47f2614ae

  • memory/2084-4-0x0000000005080000-0x000000000508A000-memory.dmp
    Filesize

    40KB

  • memory/2084-5-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/2084-8-0x00000000061D0000-0x00000000061E6000-memory.dmp
    Filesize

    88KB

  • memory/2084-9-0x0000000006620000-0x000000000669C000-memory.dmp
    Filesize

    496KB

  • memory/2084-10-0x0000000008BC0000-0x0000000008C5C000-memory.dmp
    Filesize

    624KB

  • memory/2084-15-0x00000000750BE000-0x00000000750BF000-memory.dmp
    Filesize

    4KB

  • memory/2084-6-0x00000000054B0000-0x00000000054CE000-memory.dmp
    Filesize

    120KB

  • memory/2084-7-0x00000000061A0000-0x00000000061B0000-memory.dmp
    Filesize

    64KB

  • memory/2084-0-0x00000000750BE000-0x00000000750BF000-memory.dmp
    Filesize

    4KB

  • memory/2084-3-0x0000000004FD0000-0x0000000005062000-memory.dmp
    Filesize

    584KB

  • memory/2084-20-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/2084-2-0x00000000054E0000-0x0000000005A84000-memory.dmp
    Filesize

    5.6MB

  • memory/2084-50-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/2084-1-0x00000000004D0000-0x00000000005C2000-memory.dmp
    Filesize

    968KB

  • memory/2732-86-0x00000000074D0000-0x0000000007573000-memory.dmp
    Filesize

    652KB

  • memory/2732-65-0x0000000075930000-0x000000007597C000-memory.dmp
    Filesize

    304KB

  • memory/2732-101-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/2732-26-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/2732-27-0x0000000005D10000-0x0000000006064000-memory.dmp
    Filesize

    3.3MB

  • memory/2732-16-0x0000000002A20000-0x0000000002A56000-memory.dmp
    Filesize

    216KB

  • memory/2732-18-0x00000000056E0000-0x0000000005D08000-memory.dmp
    Filesize

    6.2MB

  • memory/2732-94-0x0000000007960000-0x000000000797A000-memory.dmp
    Filesize

    104KB

  • memory/2732-92-0x0000000007850000-0x000000000785E000-memory.dmp
    Filesize

    56KB

  • memory/2732-55-0x0000000006390000-0x00000000063DC000-memory.dmp
    Filesize

    304KB

  • memory/2732-53-0x0000000006300000-0x000000000631E000-memory.dmp
    Filesize

    120KB

  • memory/2732-89-0x0000000007690000-0x000000000769A000-memory.dmp
    Filesize

    40KB

  • memory/2732-19-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/2732-87-0x0000000007C70000-0x00000000082EA000-memory.dmp
    Filesize

    6.5MB

  • memory/2732-64-0x00000000068C0000-0x00000000068F2000-memory.dmp
    Filesize

    200KB

  • memory/2732-81-0x00000000068A0000-0x00000000068BE000-memory.dmp
    Filesize

    120KB

  • memory/2732-17-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/2764-68-0x0000000075930000-0x000000007597C000-memory.dmp
    Filesize

    304KB

  • memory/2764-91-0x00000000073F0000-0x0000000007401000-memory.dmp
    Filesize

    68KB

  • memory/2764-22-0x0000000004E10000-0x0000000004E32000-memory.dmp
    Filesize

    136KB

  • memory/2764-102-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/2764-29-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/2764-88-0x00000000071F0000-0x000000000720A000-memory.dmp
    Filesize

    104KB

  • memory/2764-23-0x0000000004EB0000-0x0000000004F16000-memory.dmp
    Filesize

    408KB

  • memory/2764-21-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/2764-90-0x0000000007470000-0x0000000007506000-memory.dmp
    Filesize

    600KB

  • memory/2764-25-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/2764-24-0x0000000004F20000-0x0000000004F86000-memory.dmp
    Filesize

    408KB

  • memory/2764-93-0x0000000007430000-0x0000000007444000-memory.dmp
    Filesize

    80KB

  • memory/2764-95-0x0000000007510000-0x0000000007518000-memory.dmp
    Filesize

    32KB

  • memory/4368-48-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/4368-61-0x0000000006890000-0x000000000689C000-memory.dmp
    Filesize

    48KB

  • memory/4368-62-0x00000000068A0000-0x00000000068BE000-memory.dmp
    Filesize

    120KB

  • memory/4368-63-0x0000000006A00000-0x0000000006A0A000-memory.dmp
    Filesize

    40KB

  • memory/4368-60-0x0000000005950000-0x000000000595A000-memory.dmp
    Filesize

    40KB