Analysis

  • max time kernel
    129s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 12:05

General

  • Target

    5042020 پرونده های اسناد تحقیقات پلیس doc.exe

  • Size

    391KB

  • MD5

    c42ee85b50ff14e27eec730278d34b89

  • SHA1

    4194f65b0166ff63b250141949e5540c269ef51f

  • SHA256

    713c780c42db40b3456b797e578c889f19a915441a428277aaa8235dfecd0142

  • SHA512

    254d97f628715c9675f44e7b36ab078ee1a828cc2da12487a9eb1abb336c35b5671d3fdc9c91312bfe4fdc03b859134ecd5abc49a3b9a275f8946f95f4ca145d

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

atiku2.duckdns.org:5626

23.105.131.139:5626

Mutex

fb9e5d68-5f7a-419f-bfc1-29430b1c8638

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    23.105.131.139

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-01-27T16:13:19.597345536Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    5626

  • default_group

    Naija Parole

  • 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

    fb9e5d68-5f7a-419f-bfc1-29430b1c8638

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    atiku2.duckdns.org

  • 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

    1.2.2.0

  • wan_timeout

    8000

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • NanoCore

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

  • Looks for VirtualBox Guest Additions in registry 2 TTPs
  • Looks for VMWare Tools registry key 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Windows security modification 2 TTPs 2 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5042020 پرونده های اسناد تحقیقات پلیس doc.exe
    "C:\Users\Admin\AppData\Local\Temp\5042020 پرونده های اسناد تحقیقات پلیس doc.exe"
    1⤵
    • Checks BIOS information in registry
    • Windows security modification
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:480
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Get-MpPreference -verbose
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:892
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IIocxSnC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBA8A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1424
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1304

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

1
T1031

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

2
T1112

Disabling Security Tools

2
T1089

Virtualization/Sandbox Evasion

2
T1497

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpBA8A.tmp
    Filesize

    1KB

    MD5

    641f696d4562ec2b187db2af78e7cc81

    SHA1

    168396d68938c3b3db2525425343e82dd033f5d7

    SHA256

    9df9e83e2c541afa4c568712929d5740ba6eb7d380730fbbf8aa737998313f84

    SHA512

    d3aaaf5b7cee0dfa3c3ba68f367637ed646d29a08cb04df99c4b4ea6a139f79a529491c3ee86b13ae92d981a61337a6808c78e21c44f30e0e6dc55dfb5dc22fb

  • memory/480-55-0x0000000074410000-0x00000000749BB000-memory.dmp
    Filesize

    5.7MB

  • memory/480-54-0x0000000075CF1000-0x0000000075CF3000-memory.dmp
    Filesize

    8KB

  • memory/892-56-0x0000000000000000-mapping.dmp
  • memory/892-58-0x0000000074410000-0x00000000749BB000-memory.dmp
    Filesize

    5.7MB

  • memory/1304-72-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1304-62-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1304-65-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1304-64-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1304-61-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1304-67-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1304-68-0x000000000041E792-mapping.dmp
  • memory/1304-70-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1304-74-0x0000000074410000-0x00000000749BB000-memory.dmp
    Filesize

    5.7MB

  • memory/1304-75-0x0000000000CC6000-0x0000000000CD7000-memory.dmp
    Filesize

    68KB

  • memory/1424-59-0x0000000000000000-mapping.dmp