Analysis

  • max time kernel
    150s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    16-07-2020 06:46

General

  • Target

    Asif Javed Resume 01.exe

  • Size

    689KB

  • MD5

    6cf658772409aad77bf399877c3ba5ce

  • SHA1

    e1ce2e867f1f55793d74fe475b5816a33df6068c

  • SHA256

    bf690b9b4ab2e0306b94b1a09431878786eb0fd6e858ac1f5d21c29a78b1f8d0

  • SHA512

    bb08db2e085a982f877fe98496411e7179e249f01e58334a3bd852663cb30e6330a7a950b84a82950a111e28a62b964e6e02dd55221f8a03108068d2d0846043

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

harri2gudd.duckdns.org:2177

69.65.7.130:2177

Mutex

e4839a53-1551-4a4d-abe9-cf47c275b2b0

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    69.65.7.130

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-04-26T22:32:10.345948336Z

  • 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

    2177

  • default_group

    Default

  • 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

    e4839a53-1551-4a4d-abe9-cf47c275b2b0

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    harri2gudd.duckdns.org

  • 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

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • NanoCore

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 1376 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of SetThreadContext 3 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Suspicious use of WriteProcessMemory 36 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Asif Javed Resume 01.exe
    "C:\Users\Admin\AppData\Local\Temp\Asif Javed Resume 01.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    • Suspicious behavior: MapViewOfSection
    PID:1060
    • C:\Users\Admin\AppData\Local\Temp\Asif Javed Resume 01.exe
      "C:\Users\Admin\AppData\Local\Temp\Asif Javed Resume 01.exe"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious behavior: GetForegroundWindowSpam
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1064
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WAN Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFD80.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1452
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WAN Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFED8.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1628
      • \??\c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe
        "c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\y03xcjuu.kda"
        3⤵
          PID:1644
        • \??\c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe
          "c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\nsnemgxo.3lv"
          3⤵
            PID:1904
        • C:\Users\Admin\AppData\Local\Temp\Asif Javed Resume 01.exe
          "C:\Users\Admin\AppData\Local\Temp\Asif Javed Resume 01.exe" 2 1064 63523
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1308

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/1064-5-0x0000000000500000-0x0000000000538000-memory.dmp

        Filesize

        224KB

      • memory/1064-6-0x0000000001D42000-0x0000000001D43000-memory.dmp

        Filesize

        4KB

      • memory/1064-7-0x0000000000480000-0x00000000004B3000-memory.dmp

        Filesize

        204KB

      • memory/1064-0-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/1064-2-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/1064-3-0x0000000000400000-0x000000000047F000-memory.dmp

        Filesize

        508KB

      • memory/1644-15-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/1644-13-0x0000000000400000-0x000000000041B000-memory.dmp

        Filesize

        108KB

      • memory/1904-17-0x0000000000400000-0x0000000000453000-memory.dmp

        Filesize

        332KB

      • memory/1904-19-0x0000000000400000-0x0000000000453000-memory.dmp

        Filesize

        332KB