Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    03/10/2022, 01:02

General

  • Target
    805858e3f9bbe0408705aa14a4f7f496da20ceae892546b751e8e54b06596168.exe
  • Size 1.0MB
  • Sample221003-bd766abdep
  • SHA256 805858e3f9bbe0408705aa14a4f7f496da20ceae892546b751e8e54b06596168
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.2

C2
  • 333.icodework.com:333

Mutex
  • ee78121e-0e59-4e43-80a8-77aa27911566

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    333.icodework.com

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2015-04-09T09:30:24.848521036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    333

  • default_group

    Unused

  • 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

    ee78121e-0e59-4e43-80a8-77aa27911566

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    333.icodework.com

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.2

  • wan_timeout

    8000

Signatures

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 8 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\805858e3f9bbe0408705aa14a4f7f496da20ceae892546b751e8e54b06596168.exe
    "C:\Users\Admin\AppData\Local\Temp\805858e3f9bbe0408705aa14a4f7f496da20ceae892546b751e8e54b06596168.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:832
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Setupx.exe
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Setupx.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1260
      • C:\Users\Admin\AppData\Roaming\Googlr\chrome.exe
        "C:\Users\Admin\AppData\Roaming\Googlr\chrome.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2040
        • C:\Users\Admin\AppData\Roaming\Googlr\chrome.exe
          "C:\Users\Admin\AppData\Roaming\Googlr\chrome.exe"
          4⤵
          • Executes dropped EXE
          • Checks whether UAC is enabled
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:1636
    • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Setup.exe
      C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Setup.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:580
      • C:\Users\Admin\AppData\Local\Temp\is-94559.tmp\Setup.tmp
        "C:\Users\Admin\AppData\Local\Temp\is-94559.tmp\Setup.tmp" /SL5="$80120,161280,0,C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Setup.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:520

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        Setup.exe

        • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Setup.exe
        • Size 652KB
        • SHA256 f270fde71d7ba34e1af716606f607a9e18db9c3b53f82b6ff32d6389cbc637e4
        • MD5 SHA1 SHA512 SSDEEP

        Setup.exe

        • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Setup.exe
        • Size 652KB
        • SHA256 f270fde71d7ba34e1af716606f607a9e18db9c3b53f82b6ff32d6389cbc637e4
        • MD5 SHA1 SHA512 SSDEEP

        Setupx.exe

        • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Setupx.exe
        • Size 521KB
        • SHA256 2ba8f77e6ab2950ec530d6c766ac49d3116e6edf86b1d5f61ea5643d3852d372
        • MD5 SHA1 SHA512 SSDEEP

        Setupx.exe

        • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Setupx.exe
        • Size 521KB
        • SHA256 2ba8f77e6ab2950ec530d6c766ac49d3116e6edf86b1d5f61ea5643d3852d372
        • MD5 SHA1 SHA512 SSDEEP

        Setup.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-94559.tmp\Setup.tmp
        • Size 1.2MB
        • SHA256 b1a84898d2764002f8d4db7ba229facaef1796706864c068ccfb298c14d198cf
        • MD5 SHA1 SHA512 SSDEEP

        chrome.exe

        • Path C:\Users\Admin\AppData\Roaming\Googlr\chrome.exe
        • Size 315KB
        • SHA256 e3d78b0d9001bc61a38de11ce414bd70f58b89d742a6a439a1c0eb4425a5cf95
        • MD5 SHA1 SHA512 SSDEEP

        chrome.exe

        • Path C:\Users\Admin\AppData\Roaming\Googlr\chrome.exe
        • Size 315KB
        • SHA256 e3d78b0d9001bc61a38de11ce414bd70f58b89d742a6a439a1c0eb4425a5cf95
        • MD5 SHA1 SHA512 SSDEEP

        chrome.exe

        • Path C:\Users\Admin\AppData\Roaming\Googlr\chrome.exe
        • Size 315KB
        • SHA256 e3d78b0d9001bc61a38de11ce414bd70f58b89d742a6a439a1c0eb4425a5cf95
        • MD5 SHA1 SHA512 SSDEEP

        chrome.exe.config

        • Path C:\Users\Admin\AppData\Roaming\Googlr\chrome.exe.config
        • Size 153B
        • SHA256 fb2d50d4766fc31153e47bfa9c1d92ea46825f3c5c16331b15da9ff03387d78d
        • MD5 SHA1 SHA512

        Setup.tmp

        • Path \Users\Admin\AppData\Local\Temp\is-94559.tmp\Setup.tmp
        • Size 1.2MB
        • SHA256 b1a84898d2764002f8d4db7ba229facaef1796706864c068ccfb298c14d198cf
        • MD5 SHA1 SHA512 SSDEEP

        _shfoldr.dll

        • Path \Users\Admin\AppData\Local\Temp\is-K8T63.tmp\_isetup\_shfoldr.dll
        • Size 22KB
        • SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
        • MD5 SHA1 SHA512 SSDEEP

        _shfoldr.dll

        • Path \Users\Admin\AppData\Local\Temp\is-K8T63.tmp\_isetup\_shfoldr.dll
        • Size 22KB
        • SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
        • MD5 SHA1 SHA512 SSDEEP

        chrome.exe

        • Path \Users\Admin\AppData\Roaming\Googlr\chrome.exe
        • Size 315KB
        • SHA256 e3d78b0d9001bc61a38de11ce414bd70f58b89d742a6a439a1c0eb4425a5cf95
        • MD5 SHA1 SHA512 SSDEEP

        chrome.exe

        • Path \Users\Admin\AppData\Roaming\Googlr\chrome.exe
        • Size 315KB
        • SHA256 e3d78b0d9001bc61a38de11ce414bd70f58b89d742a6a439a1c0eb4425a5cf95
        • MD5 SHA1 SHA512 SSDEEP

        chrome.exe

        • Path \Users\Admin\AppData\Roaming\Googlr\chrome.exe
        • Size 315KB
        • SHA256 e3d78b0d9001bc61a38de11ce414bd70f58b89d742a6a439a1c0eb4425a5cf95
        • MD5 SHA1 SHA512 SSDEEP

        chrome.exe

        • Path \Users\Admin\AppData\Roaming\Googlr\chrome.exe
        • Size 315KB
        • SHA256 e3d78b0d9001bc61a38de11ce414bd70f58b89d742a6a439a1c0eb4425a5cf95
        • MD5 SHA1 SHA512 SSDEEP

        chrome.exe

        • Path \Users\Admin\AppData\Roaming\Googlr\chrome.exe
        • Size 315KB
        • SHA256 e3d78b0d9001bc61a38de11ce414bd70f58b89d742a6a439a1c0eb4425a5cf95
        • MD5 SHA1 SHA512 SSDEEP

        memory/580-72-0x0000000000400000-0x0000000000432000-memory.dmp

        memory/580-81-0x0000000000400000-0x0000000000432000-memory.dmp

        memory/832-54-0x000007FEFC611000-0x000007FEFC613000-memory.dmp

        memory/1260-57-0x0000000076BA1000-0x0000000076BA3000-memory.dmp

        memory/1636-86-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1636-83-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1636-84-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1636-88-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1636-91-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1636-97-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1636-99-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/1636-101-0x0000000073C30000-0x00000000741DB000-memory.dmp

        memory/1636-102-0x0000000073C30000-0x00000000741DB000-memory.dmp

        memory/2040-80-0x00000000749D0000-0x0000000074F7B000-memory.dmp

        memory/2040-96-0x00000000749D0000-0x0000000074F7B000-memory.dmp