Analysis

  • max time kernel
    152s
  • max time network
    171s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    22-10-2022 04:16

General

  • Target

    e31699917d9f141413507e5f628c2454.exe

  • Size

    847KB

  • MD5

    e31699917d9f141413507e5f628c2454

  • SHA1

    9b7ff7f7f0a173f0851b0bcbf3de0654af52b7c9

  • SHA256

    99b799d28261cdefac2a4fcae6774324bfb9bb9aed868da301fc2292ed4b0902

  • SHA512

    018749a0782c4aed731adea492928637df2dad8db6b8813d831540bf7225c487bb3a7275f75dc797c11002cf57c7a9c9d48c453a90a7e45d8c988c81ed474f8d

  • SSDEEP

    24576:sokPPpLnS2i5JEoP9OrozsW02IsPGaUYpF:Ehndi5P9EozsWBIsP/USF

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

craigjonson91211.freedynamicdns.net:2010

Mutex

314e68fd-30e1-43f4-a3e6-582b481b1081

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    craigjonson91211.freedynamicdns.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-07-25T15:37:55.685681636Z

  • 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

    2010

  • 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

    314e68fd-30e1-43f4-a3e6-582b481b1081

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

  • 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.

  • 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
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e31699917d9f141413507e5f628c2454.exe
    "C:\Users\Admin\AppData\Local\Temp\e31699917d9f141413507e5f628c2454.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1988
    • C:\Users\Admin\AppData\Local\Temp\e31699917d9f141413507e5f628c2454.exe
      "C:\Users\Admin\AppData\Local\Temp\e31699917d9f141413507e5f628c2454.exe"
      2⤵
        PID:1440
      • C:\Users\Admin\AppData\Local\Temp\e31699917d9f141413507e5f628c2454.exe
        "C:\Users\Admin\AppData\Local\Temp\e31699917d9f141413507e5f628c2454.exe"
        2⤵
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1764
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "SCSI Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFB8F.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:688
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "SCSI Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp2628.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:672

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp2628.tmp

      Filesize

      1KB

      MD5

      4e71faa3a77029484cfaba423d96618f

      SHA1

      9c837d050bb43d69dc608af809c292e13bca4718

      SHA256

      c470f45efd2e7c4c5b88534a18965a78dce0f8e154d3e45a9d5569ad0e334bdb

      SHA512

      6d014de41352f2b0b494d94cd58188791e81d4e53578d0722110b6827793b735e19c614877f25c61b26233dea1b5f1998ba1240bdc8fa04c87b7e64a4ca15fe0

    • C:\Users\Admin\AppData\Local\Temp\tmpFB8F.tmp

      Filesize

      1KB

      MD5

      6eed92ffe57e1b0a70a7a30156225f29

      SHA1

      49be53debcf480b2495ae2c95c531a257f74e865

      SHA256

      6a807264e39b48d813068ed20a338a20e84a126ff2e9026f6714b438b1e2897d

      SHA512

      6050ac637df0430efb92ffae5f4ab34d740f93476e31e1d8fb2c9caa1bc0a4289c22baecd4510966e9000a8f876ec75830be82a7a7f536384e636b04e8c7ca73

    • memory/672-74-0x0000000000000000-mapping.dmp

    • memory/688-72-0x0000000000000000-mapping.dmp

    • memory/1764-59-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1764-68-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1764-60-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1764-62-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1764-63-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1764-65-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1764-66-0x000000000041E792-mapping.dmp

    • memory/1764-78-0x0000000000490000-0x000000000049A000-memory.dmp

      Filesize

      40KB

    • memory/1764-70-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1764-77-0x0000000000470000-0x000000000048E000-memory.dmp

      Filesize

      120KB

    • memory/1764-76-0x0000000000460000-0x000000000046A000-memory.dmp

      Filesize

      40KB

    • memory/1988-56-0x00000000005A0000-0x00000000005B6000-memory.dmp

      Filesize

      88KB

    • memory/1988-55-0x0000000076171000-0x0000000076173000-memory.dmp

      Filesize

      8KB

    • memory/1988-57-0x00000000060D0000-0x0000000006164000-memory.dmp

      Filesize

      592KB

    • memory/1988-58-0x0000000002310000-0x000000000234A000-memory.dmp

      Filesize

      232KB

    • memory/1988-54-0x0000000000060000-0x000000000013A000-memory.dmp

      Filesize

      872KB