Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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
  • 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 11 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\79216525955a188f2a55f94514cfe9b9c0c1ce1e116d930cd9c5600dfb46ddfd.exe
    "C:\Users\Admin\AppData\Local\Temp\79216525955a188f2a55f94514cfe9b9c0c1ce1e116d930cd9c5600dfb46ddfd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1904
    • 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:2636
    • 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:2632
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QSiydtxApqxOny" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5CB0.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2488
    • 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:2436
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5E75.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2424
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5FFC.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2108

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

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp5CB0.tmp
    Filesize

    1KB

    MD5

    73cac7586afbdee02498f3aa2bafceb1

    SHA1

    d6f59153c2992dc53fd24f7430d5db7fd8f3d076

    SHA256

    a35c993ee4bd0c0222da21dbaced4f71eaf192fe334fff88c5d4df2672f002d0

    SHA512

    22d7a3b27ade9eb7c1594faa26a3a0d1b173b2d105511917cc3bb06a19debb30f548b89dcf389d93d67767d9f90c082e12dce916a89c9166974456b73628b135

  • C:\Users\Admin\AppData\Local\Temp\tmp5E75.tmp
    Filesize

    1KB

    MD5

    e4469dec6cb8e76120e3e2c6ebf09c05

    SHA1

    4a2aeddcf1b95a0bb6de2752cf5e12dde5bc7df2

    SHA256

    316a7ea9bb118beaa691754bde090e65a6ac198fd578d44e5feca8a9b45dc76d

    SHA512

    4640439da79143d4796d2fb47e569a64345817d486878454a429085d57365af7fcf896494684802d6c1e91647594456ff543bdc33a0eb859a5a40d2bf53c1d5c

  • C:\Users\Admin\AppData\Local\Temp\tmp5FFC.tmp
    Filesize

    1KB

    MD5

    0479d5f304ef2d7e3c15fb24a99f88c1

    SHA1

    8edbb1450a656fac5f5e96779ffe440ee8c1aec9

    SHA256

    112557c2b2d0c669a3b115129dc32f005341e965330fa8f2ad3e5de1926594bc

    SHA512

    537e8d87e5cd975f0e69bb145f81d6e9d7b0d82eed143ac351304ea38577137386a51fdb7357ec6d641eb04ff5f51e249bba2db8a4b5bf2934d561394a4a3f15

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

    7KB

    MD5

    d388346841609d58d59005c7c94ee789

    SHA1

    efca8960f15c76297a9598ba2e0e8a35fc736724

    SHA256

    de2ae629342e45b4ed467d10940d6476c60e7166a4cf6c8ae778253bc92b9c7b

    SHA512

    44b4ecadaa1d92fc1153356242dac8fe381b68566f5c5c57c8c29002a598014f4ebbda0d0bafc9dddb4bc6e1da20b70bbe364283a085ce82e717450f3cb58394

  • memory/1904-34-0x0000000074790000-0x0000000074E7E000-memory.dmp
    Filesize

    6.9MB

  • memory/1904-1-0x0000000074790000-0x0000000074E7E000-memory.dmp
    Filesize

    6.9MB

  • memory/1904-2-0x00000000003A0000-0x00000000003E0000-memory.dmp
    Filesize

    256KB

  • memory/1904-3-0x0000000000670000-0x0000000000682000-memory.dmp
    Filesize

    72KB

  • memory/1904-4-0x0000000000A00000-0x0000000000A0C000-memory.dmp
    Filesize

    48KB

  • memory/1904-5-0x0000000005D70000-0x0000000005DEA000-memory.dmp
    Filesize

    488KB

  • memory/1904-19-0x0000000074790000-0x0000000074E7E000-memory.dmp
    Filesize

    6.9MB

  • memory/1904-0-0x0000000000D60000-0x0000000000E10000-memory.dmp
    Filesize

    704KB

  • memory/2436-18-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2436-50-0x0000000074790000-0x0000000074E7E000-memory.dmp
    Filesize

    6.9MB

  • memory/2436-29-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2436-31-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2436-33-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2436-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
    Filesize

    4KB

  • memory/2436-57-0x0000000004CD0000-0x0000000004D10000-memory.dmp
    Filesize

    256KB

  • memory/2436-56-0x0000000074790000-0x0000000074E7E000-memory.dmp
    Filesize

    6.9MB

  • memory/2436-55-0x00000000004A0000-0x00000000004AA000-memory.dmp
    Filesize

    40KB

  • memory/2436-54-0x0000000000650000-0x000000000066E000-memory.dmp
    Filesize

    120KB

  • memory/2436-53-0x0000000000490000-0x000000000049A000-memory.dmp
    Filesize

    40KB

  • memory/2436-23-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2436-25-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2436-21-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2632-45-0x0000000002B20000-0x0000000002B60000-memory.dmp
    Filesize

    256KB

  • memory/2632-42-0x000000006DE20000-0x000000006E3CB000-memory.dmp
    Filesize

    5.7MB

  • memory/2632-51-0x000000006DE20000-0x000000006E3CB000-memory.dmp
    Filesize

    5.7MB

  • memory/2632-40-0x0000000002B20000-0x0000000002B60000-memory.dmp
    Filesize

    256KB

  • memory/2632-39-0x000000006DE20000-0x000000006E3CB000-memory.dmp
    Filesize

    5.7MB

  • memory/2636-44-0x000000006DE20000-0x000000006E3CB000-memory.dmp
    Filesize

    5.7MB

  • memory/2636-46-0x0000000002BD0000-0x0000000002C10000-memory.dmp
    Filesize

    256KB

  • memory/2636-52-0x000000006DE20000-0x000000006E3CB000-memory.dmp
    Filesize

    5.7MB

  • memory/2636-41-0x0000000002BD0000-0x0000000002C10000-memory.dmp
    Filesize

    256KB

  • memory/2636-38-0x000000006DE20000-0x000000006E3CB000-memory.dmp
    Filesize

    5.7MB