Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/11/2022, 00:02

General

  • Target

    e5a08c20ffae6658a8f4e91c1154b10abe7eb7bf1e6b0cfd33eed75713a7e4e9.exe

  • Size

    421KB

  • MD5

    e74663b410d589c107c77cbe2395128d

  • SHA1

    b7b571018d6d50538f90c68ca7659016da7439e1

  • SHA256

    e5a08c20ffae6658a8f4e91c1154b10abe7eb7bf1e6b0cfd33eed75713a7e4e9

  • SHA512

    1f256306360e131f66798611cfce6dc1aacf27dba41a52d98037e6808bf37704de4cfbde0f80e5dabb6bb0ae62ab7328a8df464e399e84c721faa3bfcf11a7ab

  • SSDEEP

    12288:H04l/u4swYTNbep+sF+L52dv5MawHzL/2PUuW2:HlG4sFbep+QJWzz6

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

funnypic.dyndns-remote.com:1800

Mutex

4d611919-aaa1-49fe-b6b4-f424a25bdd6e

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2015-02-17T17:57:48.460023936Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1800

  • default_group

    Startupnanno

  • 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

    4d611919-aaa1-49fe-b6b4-f424a25bdd6e

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    funnypic.dyndns-remote.com

  • 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
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e5a08c20ffae6658a8f4e91c1154b10abe7eb7bf1e6b0cfd33eed75713a7e4e9.exe
    "C:\Users\Admin\AppData\Local\Temp\e5a08c20ffae6658a8f4e91c1154b10abe7eb7bf1e6b0cfd33eed75713a7e4e9.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3704
    • C:\Users\Admin\AppData\Local\Temp\e5a08c20ffae6658a8f4e91c1154b10abe7eb7bf1e6b0cfd33eed75713a7e4e9.exe
      "C:\Users\Admin\AppData\Local\Temp\e5a08c20ffae6658a8f4e91c1154b10abe7eb7bf1e6b0cfd33eed75713a7e4e9.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:4956

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\e5a08c20ffae6658a8f4e91c1154b10abe7eb7bf1e6b0cfd33eed75713a7e4e9.exe.log

          Filesize

          676B

          MD5

          3bc2150211e33cd343b025da5a9b1457

          SHA1

          a180ee6e62a496a226590390651a1d3708c7b89c

          SHA256

          ff2e05f53cc9b927bed429bb2df53290223b459c49be1bea6b0ef13c52903787

          SHA512

          e192903a8d0855203615c2ddd60c45c791492327fcd8a025e1dd1744cc2a526a4e90b8619e19b170f3ed808f3cbe4c839dc86fc70d97c5b0fb86ea529b78442c

        • memory/3704-132-0x00000000753C0000-0x0000000075971000-memory.dmp

          Filesize

          5.7MB

        • memory/3704-133-0x00000000753C0000-0x0000000075971000-memory.dmp

          Filesize

          5.7MB

        • memory/3704-137-0x00000000753C0000-0x0000000075971000-memory.dmp

          Filesize

          5.7MB

        • memory/4956-135-0x0000000000400000-0x000000000045A000-memory.dmp

          Filesize

          360KB

        • memory/4956-138-0x00000000753C0000-0x0000000075971000-memory.dmp

          Filesize

          5.7MB

        • memory/4956-139-0x00000000753C0000-0x0000000075971000-memory.dmp

          Filesize

          5.7MB