Analysis

  • max time kernel
    657s
  • max time network
    663s
  • platform
    windows10-1703_x64
  • resource
    win10-20220718-en
  • resource tags

    arch:x64arch:x86image:win10-20220718-enlocale:en-usos:windows10-1703-x64system
  • submitted
    21-07-2022 22:27

General

  • Target

    orxVwulQulmYSAf.exe

  • Size

    968KB

  • MD5

    99b689cff9e00db87bbcf91174b8b7f3

  • SHA1

    0ee1d70a16c7d6b6c1c87a1ce4f76db76eb4b153

  • SHA256

    a3bff9b4fb3f28a222c1c9658440b31e57d53b1c0ce9e36fda779726f75daa71

  • SHA512

    29973550ca4bef56a3d54d61d89717af98f62ec5e6ec480e3bc93dd6917a16d4abb8e27787232651fc41897f196c4e729190c91542af0feac73535d16e7aedae

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

smithcity123.ddns.net:57689

194.5.98.180:57689

Mutex

c01c81ab-6469-4a53-a74b-1d51499279d4

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    194.5.98.180

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-03-06T19:31:37.368246236Z

  • 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

    57689

  • default_group

    GREAT

  • 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

    c01c81ab-6469-4a53-a74b-1d51499279d4

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    smithcity123.ddns.net

  • 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.

  • suricata: ET MALWARE Possible NanoCore C2 60B

    suricata: ET MALWARE Possible NanoCore C2 60B

  • Uses the VBS compiler for execution 1 TTPs
  • 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). Likely ransomware behaviour.

  • 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 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\orxVwulQulmYSAf.exe
    "C:\Users\Admin\AppData\Local\Temp\orxVwulQulmYSAf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1076
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kXNiPNjdbyLARR" /XML "C:\Users\Admin\AppData\Local\Temp\tmp530.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:220
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
      "{path}"
      2⤵
        PID:1480
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
        "{path}"
        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:3400
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "NAT Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFEE.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:3720
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "NAT Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp10F9.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:3140

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scripting

    1
    T1064

    Scheduled Task

    1
    T1053

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Scripting

    1
    T1064

    Modify Registry

    1
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp10F9.tmp
      Filesize

      1KB

      MD5

      45cb9fac03bbbeb9a6e82b85eb3efbda

      SHA1

      4d6c00b68434d11f346ce844ccbc2ed7b7d4acff

      SHA256

      185deb301fb4155d92e158bad5a52722c63ae7399a5b9d3d875050d5389b933a

      SHA512

      00713c53d7193660ba223a47fa46225cb6d870ea5ea794f703efc73e21e6e01b7283dac5be3d5280e553b922521e32bc7db591bf471bd7673a1a0b62b198073b

    • C:\Users\Admin\AppData\Local\Temp\tmp530.tmp
      Filesize

      1KB

      MD5

      69205b6fe40fa23999a04b23ea035c75

      SHA1

      4e2d00326877f9efb65620b06908d7940b7dc680

      SHA256

      69a91b8e543adac6033878816745c720d934c349a54a4d120937c5d819b786a5

      SHA512

      bb6bbffa51788255f2cb2030658c4272ac0e14c356c514c5c9108bea361e53ea15a0e51359841be401166a2e03c9ebbefc10d8bbedfd885b9419a15fff4f9f0c

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

      1KB

      MD5

      808c6e96c170c90d0db522e8947eb2bd

      SHA1

      44583694c3c23410d637bb96c0df0921363533ad

      SHA256

      c6b75fb7740d34d55d74b8664ff1ea778638a4916c2b52348ea34de60edd3afc

      SHA512

      928b85e9fddfd7c93623e954dc53367aaf355f74a14601d77e45612ebdb77f3d6c0fc853e154f91f61e64306361885467c16fc211cf1bbdc023658ad35dba1eb

    • memory/220-193-0x0000000000000000-mapping.dmp
    • memory/1076-153-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-184-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-119-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-120-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-121-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-122-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-123-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-124-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-125-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-126-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-127-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-155-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-129-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-130-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-131-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-132-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-133-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-134-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-135-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-136-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-137-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-139-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-138-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-140-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-141-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-142-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-143-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-144-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-145-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-146-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-147-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-148-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-149-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-157-0x0000000005130000-0x00000000051CC000-memory.dmp
      Filesize

      624KB

    • memory/1076-151-0x0000000000670000-0x0000000000768000-memory.dmp
      Filesize

      992KB

    • memory/1076-152-0x0000000005590000-0x0000000005A8E000-memory.dmp
      Filesize

      5.0MB

    • memory/1076-117-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-154-0x0000000004F90000-0x0000000005022000-memory.dmp
      Filesize

      584KB

    • memory/1076-128-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-118-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-150-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-158-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-159-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-160-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-161-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-162-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-163-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-164-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-165-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-166-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-167-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-168-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-169-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-170-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-171-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-172-0x0000000004F70000-0x0000000004F7A000-memory.dmp
      Filesize

      40KB

    • memory/1076-173-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-174-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-175-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-176-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-177-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-178-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-179-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-180-0x00000000050F0000-0x00000000050FA000-memory.dmp
      Filesize

      40KB

    • memory/1076-181-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-182-0x00000000079B0000-0x0000000007A3C000-memory.dmp
      Filesize

      560KB

    • memory/1076-183-0x0000000009F50000-0x0000000009F8A000-memory.dmp
      Filesize

      232KB

    • memory/1076-156-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-185-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-186-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-187-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/1076-188-0x0000000077DD0000-0x0000000077F5E000-memory.dmp
      Filesize

      1.6MB

    • memory/3140-295-0x0000000000000000-mapping.dmp
    • memory/3400-214-0x000000000041E792-mapping.dmp
    • memory/3400-252-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/3400-322-0x0000000009500000-0x000000000950A000-memory.dmp
      Filesize

      40KB

    • memory/3400-327-0x000000000A010000-0x000000000A02E000-memory.dmp
      Filesize

      120KB

    • memory/3400-333-0x000000000A240000-0x000000000A24A000-memory.dmp
      Filesize

      40KB

    • memory/3720-276-0x0000000000000000-mapping.dmp