Analysis

  • max time kernel
    137s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-03-2024 02:23

General

  • Target

    79216525955a188f2a55f94514cfe9b9c0c1ce1e116d930cd9c5600dfb46ddfd.exe

  • Size

    683KB

  • MD5

    62737dc772d7ab223bbc1785a0b9e540

  • SHA1

    b53bab1a6c131032d28e4259d05be33634af62ad

  • SHA256

    79216525955a188f2a55f94514cfe9b9c0c1ce1e116d930cd9c5600dfb46ddfd

  • SHA512

    8ddb107301aa5c05aa298a5def90c5fac642c26b441d83f832dd4b7cb4a8e81d59df8fa174160326532d43521425fae25f87ad302ac5f3212b434dec2c8ab600

  • SSDEEP

    12288:3AoO3myQx0xjsWjRr0xRXrTXF2O7+7Yte+iRR3TuK7ktBH/2Yba04x:3Smx0TRr4XHF2tU8337kt0v04

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

194.147.140.158:2323

Mutex

a988db37-80f7-4d81-b262-bd14326766b3

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    194.147.140.158

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2023-12-23T03:20:22.055277036Z

  • 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

    2323

  • default_group

    image

  • 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

    a988db37-80f7-4d81-b262-bd14326766b3

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    194.147.140.158

  • 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.

  • Detects executables packed with SmartAssembly 1 IoCs
  • 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 14 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\79216525955a188f2a55f94514cfe9b9c0c1ce1e116d930cd9c5600dfb46ddfd.exe
    "C:\Users\Admin\AppData\Local\Temp\79216525955a188f2a55f94514cfe9b9c0c1ce1e116d930cd9c5600dfb46ddfd.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2004
    • 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\79216525955a188f2a55f94514cfe9b9c0c1ce1e116d930cd9c5600dfb46ddfd.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4568
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QSiydtxApqxOny.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3404
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QSiydtxApqxOny" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9D59.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2740
    • C:\Users\Admin\AppData\Local\Temp\79216525955a188f2a55f94514cfe9b9c0c1ce1e116d930cd9c5600dfb46ddfd.exe
      "C:\Users\Admin\AppData\Local\Temp\79216525955a188f2a55f94514cfe9b9c0c1ce1e116d930cd9c5600dfb46ddfd.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:1020
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "NAT Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA0F3.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:4700
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "NAT Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA28A.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3888

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

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

    b002582becf48bde3b89b5332f9d65ef

    SHA1

    078853da5bd8a82a1b0d95bff6fb40a531a00c38

    SHA256

    93a136e7f313d8eafb9af3ba14d0655e141de77c1cd8938778401721d6674d43

    SHA512

    10f710238a6ea6c3491b271f3c2f5958340126e73bb333492a492dd41382dd75488067314bb3483debeeb2b96d11cdf4e07d834aee74969b67f237ff132acf0b

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bo4nj4fi.t1o.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp9D59.tmp
    Filesize

    1KB

    MD5

    baf0cb8a5cd4c962cd4fe136b67fab3c

    SHA1

    c1b55b9ab7bbcd22cf8c9e87912d48c79f949753

    SHA256

    16e4effa741a0edf2c767dde571b80e722d383af5802a7d5d2f91299787d2130

    SHA512

    6534da8c27bd1f57ee3fc15e1d3365cd928df0ae0c8f341ca96dcb14d018b5f6ca8c234167ca1fdf51225c81d42d91ea5ecc5e113ed65e31984f04bad1842a34

  • C:\Users\Admin\AppData\Local\Temp\tmpA0F3.tmp
    Filesize

    1KB

    MD5

    e4469dec6cb8e76120e3e2c6ebf09c05

    SHA1

    4a2aeddcf1b95a0bb6de2752cf5e12dde5bc7df2

    SHA256

    316a7ea9bb118beaa691754bde090e65a6ac198fd578d44e5feca8a9b45dc76d

    SHA512

    4640439da79143d4796d2fb47e569a64345817d486878454a429085d57365af7fcf896494684802d6c1e91647594456ff543bdc33a0eb859a5a40d2bf53c1d5c

  • C:\Users\Admin\AppData\Local\Temp\tmpA28A.tmp
    Filesize

    1KB

    MD5

    c58d37cb49c18f1d7cece3c78ac2f407

    SHA1

    769ed0ea9d5269e1cec7234eaac77da129cc0463

    SHA256

    52cdb418384a912c5b7071c92d7761f0d12250f07dbbb31876eb2e8d65acbae7

    SHA512

    2efcb3eaf050d56ad3d483112303a1543f9fc457119fbca7d81b45d5619c0f1ba706ce96644d4e2055c1b5ada7af13f071495287a775ce234d9125633bf02775

  • memory/1020-33-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1020-50-0x0000000004E80000-0x0000000004E90000-memory.dmp
    Filesize

    64KB

  • memory/1020-61-0x00000000053A0000-0x00000000053BE000-memory.dmp
    Filesize

    120KB

  • memory/1020-60-0x0000000004E70000-0x0000000004E7A000-memory.dmp
    Filesize

    40KB

  • memory/1020-62-0x0000000005FA0000-0x0000000005FAA000-memory.dmp
    Filesize

    40KB

  • memory/1020-107-0x0000000004E80000-0x0000000004E90000-memory.dmp
    Filesize

    64KB

  • memory/1020-48-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/1020-106-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/2004-7-0x00000000084B0000-0x000000000854C000-memory.dmp
    Filesize

    624KB

  • memory/2004-20-0x0000000005420000-0x0000000005430000-memory.dmp
    Filesize

    64KB

  • memory/2004-16-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/2004-0-0x0000000000AC0000-0x0000000000B70000-memory.dmp
    Filesize

    704KB

  • memory/2004-10-0x0000000008880000-0x00000000088FA000-memory.dmp
    Filesize

    488KB

  • memory/2004-9-0x0000000008460000-0x000000000846C000-memory.dmp
    Filesize

    48KB

  • memory/2004-8-0x0000000008440000-0x0000000008452000-memory.dmp
    Filesize

    72KB

  • memory/2004-6-0x0000000005460000-0x000000000546A000-memory.dmp
    Filesize

    40KB

  • memory/2004-5-0x0000000005420000-0x0000000005430000-memory.dmp
    Filesize

    64KB

  • memory/2004-4-0x0000000005570000-0x00000000058C4000-memory.dmp
    Filesize

    3.3MB

  • memory/2004-3-0x00000000054D0000-0x0000000005562000-memory.dmp
    Filesize

    584KB

  • memory/2004-2-0x0000000005A80000-0x0000000006024000-memory.dmp
    Filesize

    5.6MB

  • memory/2004-1-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/2004-49-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/3404-90-0x00000000079B0000-0x000000000802A000-memory.dmp
    Filesize

    6.5MB

  • memory/3404-88-0x0000000004AE0000-0x0000000004AF0000-memory.dmp
    Filesize

    64KB

  • memory/3404-55-0x0000000006080000-0x00000000060CC000-memory.dmp
    Filesize

    304KB

  • memory/3404-105-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/3404-27-0x0000000004AE0000-0x0000000004AF0000-memory.dmp
    Filesize

    64KB

  • memory/3404-26-0x0000000004AE0000-0x0000000004AF0000-memory.dmp
    Filesize

    64KB

  • memory/3404-24-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/3404-94-0x0000000007570000-0x0000000007581000-memory.dmp
    Filesize

    68KB

  • memory/3404-93-0x00000000075F0000-0x0000000007686000-memory.dmp
    Filesize

    600KB

  • memory/3404-66-0x0000000075930000-0x000000007597C000-memory.dmp
    Filesize

    304KB

  • memory/3404-91-0x0000000007370000-0x000000000738A000-memory.dmp
    Filesize

    104KB

  • memory/3404-67-0x000000007F6B0000-0x000000007F6C0000-memory.dmp
    Filesize

    64KB

  • memory/4568-86-0x0000000002F20000-0x0000000002F30000-memory.dmp
    Filesize

    64KB

  • memory/4568-23-0x0000000005870000-0x00000000058D6000-memory.dmp
    Filesize

    408KB

  • memory/4568-77-0x0000000006CE0000-0x0000000006CFE000-memory.dmp
    Filesize

    120KB

  • memory/4568-53-0x00000000066F0000-0x000000000670E000-memory.dmp
    Filesize

    120KB

  • memory/4568-65-0x0000000075930000-0x000000007597C000-memory.dmp
    Filesize

    304KB

  • memory/4568-21-0x0000000005750000-0x0000000005772000-memory.dmp
    Filesize

    136KB

  • memory/4568-63-0x000000007F150000-0x000000007F160000-memory.dmp
    Filesize

    64KB

  • memory/4568-92-0x0000000007AA0000-0x0000000007AAA000-memory.dmp
    Filesize

    40KB

  • memory/4568-64-0x00000000076E0000-0x0000000007712000-memory.dmp
    Filesize

    200KB

  • memory/4568-87-0x0000000007920000-0x00000000079C3000-memory.dmp
    Filesize

    652KB

  • memory/4568-95-0x0000000007C60000-0x0000000007C6E000-memory.dmp
    Filesize

    56KB

  • memory/4568-96-0x0000000007C70000-0x0000000007C84000-memory.dmp
    Filesize

    80KB

  • memory/4568-97-0x0000000007D70000-0x0000000007D8A000-memory.dmp
    Filesize

    104KB

  • memory/4568-98-0x0000000007D50000-0x0000000007D58000-memory.dmp
    Filesize

    32KB

  • memory/4568-18-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/4568-19-0x0000000005930000-0x0000000005F58000-memory.dmp
    Filesize

    6.2MB

  • memory/4568-104-0x00000000750B0000-0x0000000075860000-memory.dmp
    Filesize

    7.7MB

  • memory/4568-25-0x00000000060D0000-0x0000000006136000-memory.dmp
    Filesize

    408KB

  • memory/4568-17-0x0000000002F20000-0x0000000002F30000-memory.dmp
    Filesize

    64KB

  • memory/4568-15-0x0000000002D50000-0x0000000002D86000-memory.dmp
    Filesize

    216KB