Analysis

  • max time kernel
    174s
  • max time network
    199s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-08-2022 19:24

General

  • Target

    BL DRAFT.exe

  • Size

    597KB

  • MD5

    64201c1170ff4a15c04e12b4dcdbb2ac

  • SHA1

    41e3198875d84a6d2de1b324e3cdd109d78ff878

  • SHA256

    81f2b379359e0d425565be86c1ff9ec7978dba9a8a4312b4552be9baeb25ba86

  • SHA512

    40f26d5dae941a6aa6442e97c11818559ce4d6b1df934c21f452b82bcbb29fd50ecc42a2a12efee3a7eb17abd8a6c0fc316afbac17176fe8cfb3e834a2999269

  • SSDEEP

    12288:f6m4+BFf+fRjMaDUL7g+o7imPO/RSFSQJESqyg5rHpW+KvAAAwz0aIXWX6:fH4+3+fRWL7gx7imIRn9LfV8og

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

dera5nano.ddns.net:1010

107.182.129.248:1010

Mutex

5a26bcef-e67f-486a-8e48-1748cc7891a2

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    107.182.129.248

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-06-06T12:07:01.612898436Z

  • 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

    1010

  • 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

    5a26bcef-e67f-486a-8e48-1748cc7891a2

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    dera5nano.ddns.net

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BL DRAFT.exe
    "C:\Users\Admin\AppData\Local\Temp\BL DRAFT.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1664
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\QARYxi.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3352
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QARYxi" /XML "C:\Users\Admin\AppData\Local\Temp\tmpED68.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3224
    • C:\Users\Admin\AppData\Local\Temp\BL DRAFT.exe
      "C:\Users\Admin\AppData\Local\Temp\BL DRAFT.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:868
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "AGP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFCBA.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1148
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "AGP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFFA9.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2980

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\BL DRAFT.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\tmpED68.tmp

    Filesize

    1KB

    MD5

    bce14126157e181f191dc382f6dec85e

    SHA1

    846689af75f927dd856399863437928739c20576

    SHA256

    9637f00cb0ab239b049e28503f95de8feb0bc15d00ae37fffb3a107c65a978bd

    SHA512

    cc51e6ea3eaff2544c2945615bf645c8cc0df51976a9abf02503119ae4bfa737b41f2b47d80b6d6b44b5d70c49381eb25ada15c2cf0837868bdd907f105a8538

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

    Filesize

    1KB

    MD5

    e40f1f9267225c099291bbbbf9f176f7

    SHA1

    d9b434c49901f656ce2f3a239fa8f5ccccce0712

    SHA256

    4f0bb0864d4cdac7b27c248b7318490626fc0b7ed4e13540221d2bbce3d0b207

    SHA512

    f67ff411009e4f0905c93f0ee134067361fb6dc89393188a0ca1603495f1a1e2d6f61f608f1585cc9123926575540d8f2eee1776e1178f02aa4d445ca9694059

  • C:\Users\Admin\AppData\Local\Temp\tmpFFA9.tmp

    Filesize

    1KB

    MD5

    157cd55403665c49c9fd3ca1196c4397

    SHA1

    4feed6e606b41bb617274471349582963182756b

    SHA256

    49d903f84313feb16bd189c58b6c206f98b05da00ea0da881e2ff0c893b6ba5e

    SHA512

    bea7e3caa9c37cadd772a6d3ee0d9ed47de6b3e880cd58649be2939cacd00f70d4edc1ad177e432539267bb520094d9cda3f781cdfc69122f3775242321c11b8

  • memory/868-142-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/868-141-0x0000000000000000-mapping.dmp

  • memory/1148-148-0x0000000000000000-mapping.dmp

  • memory/1664-135-0x0000000004CC0000-0x0000000004CCA000-memory.dmp

    Filesize

    40KB

  • memory/1664-132-0x0000000000170000-0x000000000020C000-memory.dmp

    Filesize

    624KB

  • memory/1664-136-0x0000000006E40000-0x0000000006EDC000-memory.dmp

    Filesize

    624KB

  • memory/1664-134-0x0000000004B90000-0x0000000004C22000-memory.dmp

    Filesize

    584KB

  • memory/1664-133-0x0000000005210000-0x00000000057B4000-memory.dmp

    Filesize

    5.6MB

  • memory/2980-150-0x0000000000000000-mapping.dmp

  • memory/3224-138-0x0000000000000000-mapping.dmp

  • memory/3352-137-0x0000000000000000-mapping.dmp

  • memory/3352-147-0x0000000006390000-0x00000000063F6000-memory.dmp

    Filesize

    408KB

  • memory/3352-146-0x00000000062B0000-0x0000000006316000-memory.dmp

    Filesize

    408KB

  • memory/3352-145-0x0000000005AA0000-0x0000000005AC2000-memory.dmp

    Filesize

    136KB

  • memory/3352-144-0x0000000005B10000-0x0000000006138000-memory.dmp

    Filesize

    6.2MB

  • memory/3352-140-0x0000000003050000-0x0000000003086000-memory.dmp

    Filesize

    216KB

  • memory/3352-152-0x0000000006360000-0x000000000637E000-memory.dmp

    Filesize

    120KB