Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    27/01/2024, 12:02

General

  • Target

    7a31a2743fd46eaac57e0facfa4cc550.exe

  • Size

    1.0MB

  • MD5

    7a31a2743fd46eaac57e0facfa4cc550

  • SHA1

    0b495b9d62c4504cb58d32c01f2718ce76ad27a8

  • SHA256

    f67ef0bea71caf8b6cb8b570304051aacce30cb42c51eec9d5bc10365b057430

  • SHA512

    174bfc47be92e1e0c3ac107b0a32227fdd31075380eb6f657f00d9d31e0d1d5abc2e22f299203090aab91d7d9e843039aa2516bc1fe63f05924f6dc5b1e970fb

  • SSDEEP

    12288:Ww8IpRoJiHDs2qVPA9I/9X6NIbwooBQZ:Ww84osHHU4S6ywo

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

judge777.ddns.net:8282

127.0.0.1:8282

Mutex

0ed357f7-1b88-47ff-bb68-1b617843f125

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    37.235.1.177

  • buffer_size

    65535

  • build_time

    2021-01-11T10:18:25.208357936Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8282

  • default_group

    enzo

  • 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

    0ed357f7-1b88-47ff-bb68-1b617843f125

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    judge777.ddns.net

  • primary_dns_server

    37.235.1.174

  • 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.

  • Unexpected DNS network traffic destination 4 IoCs

    Network traffic to other servers than the configured DNS servers was detected on the DNS port.

  • 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7a31a2743fd46eaac57e0facfa4cc550.exe
    "C:\Users\Admin\AppData\Local\Temp\7a31a2743fd46eaac57e0facfa4cc550.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1196
    • 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\7a31a2743fd46eaac57e0facfa4cc550.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3000
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\GoJyWEU.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2600
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GoJyWEU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF142.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2012
    • C:\Users\Admin\AppData\Local\Temp\7a31a2743fd46eaac57e0facfa4cc550.exe
      "C:\Users\Admin\AppData\Local\Temp\7a31a2743fd46eaac57e0facfa4cc550.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
      PID:2900
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\GoJyWEU.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2884

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpF142.tmp

    Filesize

    1KB

    MD5

    61efd0bcf0eed06c8eb1607cd208d7b6

    SHA1

    38a2bb2b8d8330a788521efac9acd1c3b3cf356a

    SHA256

    5fe328b118f91490ad7dadb8b015863e46c619a0bc918f03d5b3093e6d6ce3b7

    SHA512

    3f500156d0edf50e25fbbf344769643fa190f882b25610459cd43222ff4ee1f952cb5792b51cf43951ffa096ce2a2f13f72d717421684c9770c62c5582c2f34f

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\7NTW3KQ1POW5X0MIY6FJ.temp

    Filesize

    7KB

    MD5

    105fe2f5733f6514679a087518afe7db

    SHA1

    02a095af81cd7d3b3cba23f3847c5c1f8fe58832

    SHA256

    fcd263f841ba3a4d4656b2fb59785db9bf9382bf52188aea842ed642425da0ab

    SHA512

    df1dce1c306d747dbfb6fcdc45d2376a683fff90347840ad16ab2623c14971849387ffb3a5b1f4f9902c326d0288c32c3fa3fd94797aaf2b187d5f41708a4ae8

  • memory/1196-4-0x0000000000550000-0x0000000000590000-memory.dmp

    Filesize

    256KB

  • memory/1196-47-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/1196-0-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/1196-5-0x0000000000550000-0x0000000000590000-memory.dmp

    Filesize

    256KB

  • memory/1196-2-0x0000000000550000-0x0000000000590000-memory.dmp

    Filesize

    256KB

  • memory/1196-3-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/1196-1-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/2600-27-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/2600-22-0x0000000002770000-0x00000000027B0000-memory.dmp

    Filesize

    256KB

  • memory/2600-23-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/2600-57-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/2884-58-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/2884-49-0x0000000002750000-0x0000000002790000-memory.dmp

    Filesize

    256KB

  • memory/2884-50-0x0000000002750000-0x0000000002790000-memory.dmp

    Filesize

    256KB

  • memory/2884-48-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/2884-46-0x0000000002750000-0x0000000002790000-memory.dmp

    Filesize

    256KB

  • memory/2884-45-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/2900-31-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2900-51-0x00000000022B0000-0x00000000022F0000-memory.dmp

    Filesize

    256KB

  • memory/2900-42-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2900-33-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2900-29-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2900-26-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2900-24-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2900-61-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/2900-60-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/2900-35-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2900-44-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2900-54-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/2900-55-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/2900-59-0x00000000022B0000-0x00000000022F0000-memory.dmp

    Filesize

    256KB

  • memory/3000-19-0x0000000002650000-0x0000000002690000-memory.dmp

    Filesize

    256KB

  • memory/3000-17-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/3000-56-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/3000-20-0x00000000742D0000-0x000000007487B000-memory.dmp

    Filesize

    5.7MB

  • memory/3000-21-0x0000000002650000-0x0000000002690000-memory.dmp

    Filesize

    256KB