Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    29-01-2021 09:21

General

  • Target

    1514dad5fc756723d4c00e0817605ae9.exe

  • Size

    1.8MB

  • MD5

    1514dad5fc756723d4c00e0817605ae9

  • SHA1

    ba60f92da33b83ec49dd2a80dcdaec358dfc4c53

  • SHA256

    66d2cbc64ba169d994da1f76587f48695ae0c3ec91fed8cb17c023e7370db0c9

  • SHA512

    7656d372e1972e21911017873a89b4959abc982d2535b20d03fca07ce4764b37b271c3fa27cf52c9815b3e53a11c38d451a8d32134c541721085c7856460b475

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

dmjncbzvayuywqalponmcbvzcxhyuesgfhdnautwm.ydns.eu:2420

Mutex

9a83c6a0-5b64-416c-b0dc-d47048e32edf

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-11-08T01:17:30.860776436Z

  • 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

    2420

  • 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

    9a83c6a0-5b64-416c-b0dc-d47048e32edf

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    dmjncbzvayuywqalponmcbvzcxhyuesgfhdnautwm.ydns.eu

  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 7 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.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1514dad5fc756723d4c00e0817605ae9.exe
    "C:\Users\Admin\AppData\Local\Temp\1514dad5fc756723d4c00e0817605ae9.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:776
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2036
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:1968
    • C:\Users\Admin\AppData\Local\Temp\1514dad5fc756723d4c00e0817605ae9.exe
      "C:\Users\Admin\AppData\Local\Temp\1514dad5fc756723d4c00e0817605ae9.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
      • Suspicious use of WriteProcessMemory
      PID:608
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp982.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1772
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpACB.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:808

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp982.tmp

    MD5

    284bbc20466cbe9ba3462702e01c89d7

    SHA1

    13c946cedb05dd1fabf458ccc86fb2ff1bb35f50

    SHA256

    39e3f328609e5825954ce0dce32f4952b349cf758abbd1dde617114715859200

    SHA512

    2728465400c0f2ee4abb9eb67e6a382852f64e1ce0c253aeb2c52ed7163d609befe3f8e6946f288a04e857ac29870663615e490dbc95d4270a4a9a3328c34c93

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

    MD5

    819bdbdac3be050783d203020e6c4c30

    SHA1

    a373521fceb21cac8b93e55ee48578e40a6e740b

    SHA256

    0e5dedca6d0d3c50ebcedb5bbf51ef3d434eb6b43da46764205de7636131f053

    SHA512

    cece1c4d8b4db79fc6e3cd225efaccdf9d2493f28991b1d48439944af38aaa61a215bd00a0beedcbdecc4f1ec5be0843774375a483f3d4a573a3980c54798cbd

  • memory/608-11-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/608-14-0x0000000000A80000-0x0000000000A81000-memory.dmp

    Filesize

    4KB

  • memory/608-21-0x00000000003D0000-0x00000000003D3000-memory.dmp

    Filesize

    12KB

  • memory/608-9-0x000000000041E792-mapping.dmp

  • memory/608-8-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/608-10-0x0000000073D40000-0x000000007442E000-memory.dmp

    Filesize

    6.9MB

  • memory/608-20-0x00000000003E0000-0x00000000003F9000-memory.dmp

    Filesize

    100KB

  • memory/608-19-0x00000000003C0000-0x00000000003C5000-memory.dmp

    Filesize

    20KB

  • memory/776-13-0x0000000006100000-0x0000000006101000-memory.dmp

    Filesize

    4KB

  • memory/776-5-0x00000000004B0000-0x00000000004F4000-memory.dmp

    Filesize

    272KB

  • memory/776-3-0x0000000000B30000-0x0000000000B31000-memory.dmp

    Filesize

    4KB

  • memory/776-2-0x0000000073D40000-0x000000007442E000-memory.dmp

    Filesize

    6.9MB

  • memory/808-17-0x0000000000000000-mapping.dmp

  • memory/1772-15-0x0000000000000000-mapping.dmp

  • memory/1968-7-0x0000000000000000-mapping.dmp

  • memory/2036-6-0x0000000000000000-mapping.dmp