Analysis

  • max time kernel
    16s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    19-04-2021 03:56

General

  • Target

    HSBC Payment Transfer CopyPDF.exe

  • Size

    323KB

  • MD5

    adc177e2f5d7228446d98dcb388da1c9

  • SHA1

    3e7228d6d8e664c18e7f7e4ffe4b0845ff97cc1b

  • SHA256

    9d41101cd1d384aa0fb3b2bf1ae720af44623bb3bcf6ccd9697a88489801eb1b

  • SHA512

    a47fd211e63db2a4a0b788782fad728745ffa02a187f1bae3694ff08a86ef2c824a972bc61c7698d7484bf2754a31c757608fad0831f84f6dd110c2d70b52c3b

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

gentle.duckdns.org:8709

Mutex

8ad4cc0f-3c30-4e60-a5e5-4ad7e6204002

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    gentle.duckdns.org

  • backup_dns_server

    gentle.duckdns.org

  • buffer_size

    65535

  • build_time

    2021-01-24T18:45:28.005456836Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8709

  • 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

    8ad4cc0f-3c30-4e60-a5e5-4ad7e6204002

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    gentle.duckdns.org

  • primary_dns_server

    gentle.duckdns.org

  • request_elevation

    false

  • 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.

  • Loads dropped DLL 1 IoCs
  • 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\HSBC Payment Transfer CopyPDF.exe
    "C:\Users\Admin\AppData\Local\Temp\HSBC Payment Transfer CopyPDF.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1096
    • C:\Users\Admin\AppData\Local\Temp\HSBC Payment Transfer CopyPDF.exe
      "C:\Users\Admin\AppData\Local\Temp\HSBC Payment Transfer CopyPDF.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:1944
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp85D3.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:464
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DPI Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp87A8.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1716

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp85D3.tmp
    MD5

    9d2ca538050190b22592ee40baf669c2

    SHA1

    fae87df756aa0f4bf13ce83cebbff5cf5b41caa0

    SHA256

    b36d16d4811b204d76e5657729a4ee94e381ecba0cbf1f75aa5590747373342a

    SHA512

    7b3b6852688252a5ff38acda6cd47c0f83ec04597d28c8579b195d5155eece82682cbe4441490b0f1e431afc15bed9dd0146495c043fe9cc483f8cfbd24f23d9

  • C:\Users\Admin\AppData\Local\Temp\tmp87A8.tmp
    MD5

    a9af285136db016a568e4a53208f21d0

    SHA1

    e1afef2b7ee8ae945353315daa19a15574b435b7

    SHA256

    7dce876e35550f4a5b8ce8a8bbab3b0ccd7c5b8660f9db4b832466b77e3a8b7c

    SHA512

    80a1f5e463a87cddc0f66336e2dc4262daf98984c6f6c662c3615d615ebe7c58677c3d694edb3bd7816ccee969aae967c7efe8526ba423f274ac1210c0c8bd6e

  • \Users\Admin\AppData\Local\Temp\nsn75ED.tmp\x8jhsg4r.dll
    MD5

    b5a88f4bcf2d4465d9408931b028778c

    SHA1

    5b1c7d0a8d63f7b95026b49d41989f337008c0f0

    SHA256

    b51382d07aee1b35e0ed65d4dac771e35e51b7095303552f654312494f756cc3

    SHA512

    07a1b3cc1fcb990f8fc8d0af0387fb66ff167d6e66f75c02ce0289cc87b8e163e633c9f21bb714bdf192b3e072afc201ad7e4652696e87e3da3150465f56df01

  • memory/464-73-0x0000000000000000-mapping.dmp
  • memory/1096-62-0x0000000002430000-0x000000000307A000-memory.dmp
    Filesize

    12.3MB

  • memory/1096-60-0x0000000075DA1000-0x0000000075DA3000-memory.dmp
    Filesize

    8KB

  • memory/1716-75-0x0000000000000000-mapping.dmp
  • memory/1944-77-0x0000000000710000-0x0000000000715000-memory.dmp
    Filesize

    20KB

  • memory/1944-81-0x0000000005140000-0x0000000005155000-memory.dmp
    Filesize

    84KB

  • memory/1944-71-0x00000000045D3000-0x00000000045D4000-memory.dmp
    Filesize

    4KB

  • memory/1944-70-0x00000000045D2000-0x00000000045D3000-memory.dmp
    Filesize

    4KB

  • memory/1944-68-0x0000000004460000-0x0000000004493000-memory.dmp
    Filesize

    204KB

  • memory/1944-66-0x0000000000400000-0x0000000000448000-memory.dmp
    Filesize

    288KB

  • memory/1944-67-0x00000000045D1000-0x00000000045D2000-memory.dmp
    Filesize

    4KB

  • memory/1944-64-0x000000000040188B-mapping.dmp
  • memory/1944-78-0x0000000004560000-0x0000000004579000-memory.dmp
    Filesize

    100KB

  • memory/1944-79-0x0000000004580000-0x0000000004583000-memory.dmp
    Filesize

    12KB

  • memory/1944-80-0x0000000005130000-0x000000000513D000-memory.dmp
    Filesize

    52KB

  • memory/1944-72-0x00000000045D4000-0x00000000045D5000-memory.dmp
    Filesize

    4KB

  • memory/1944-82-0x00000000056B0000-0x00000000056B6000-memory.dmp
    Filesize

    24KB

  • memory/1944-83-0x00000000056D0000-0x00000000056DC000-memory.dmp
    Filesize

    48KB

  • memory/1944-84-0x00000000056E0000-0x00000000056E7000-memory.dmp
    Filesize

    28KB

  • memory/1944-85-0x00000000056F0000-0x00000000056F6000-memory.dmp
    Filesize

    24KB

  • memory/1944-86-0x0000000005700000-0x000000000570D000-memory.dmp
    Filesize

    52KB

  • memory/1944-87-0x0000000005710000-0x0000000005719000-memory.dmp
    Filesize

    36KB

  • memory/1944-88-0x0000000005720000-0x000000000572F000-memory.dmp
    Filesize

    60KB

  • memory/1944-89-0x0000000005730000-0x000000000573A000-memory.dmp
    Filesize

    40KB

  • memory/1944-90-0x0000000005750000-0x0000000005779000-memory.dmp
    Filesize

    164KB

  • memory/1944-91-0x0000000005780000-0x000000000578F000-memory.dmp
    Filesize

    60KB