Analysis

  • max time kernel
    149s
  • max time network
    181s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    04-06-2021 18:27

General

  • Target

    nano.docx

  • Size

    10KB

  • MD5

    370c5933c34e634ee403ab76247c4161

  • SHA1

    655f8384e54b1a1fe989c91bc678371497579f1b

  • SHA256

    622129903441d47a1100584af9e16ba6cdcc6f035c3cffe44612ff0b83ed2cec

  • SHA512

    222fa5d4075ed1dc419ce1e948714fa556324bdd67bbdfb0ad59f452db80ddc5b47f32b0d1cbb97ccfeb3b5241d5696a12dcd36c9565cb45e9560b76464eed3b

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

ararat.mangospot.net:7747

185.140.53.216:7747

Mutex

47ef45f5-c3cd-4adc-a596-91dff13978e9

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    185.140.53.216

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-03-12T19:06:58.915943136Z

  • 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

    7747

  • default_group

    ArArAt

  • 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

    47ef45f5-c3cd-4adc-a596-91dff13978e9

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    ararat.mangospot.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.

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Abuses OpenXML format to download file from external location 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • 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
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Creates scheduled task(s) 1 TTPs 3 IoCs

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

  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 9 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\nano.docx"
    1⤵
    • Abuses OpenXML format to download file from external location
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1976
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1332
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:1732
      • C:\Users\Public\vbc.exe
        "C:\Users\Public\vbc.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1608
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vjPnuYufSoUWF" /XML "C:\Users\Admin\AppData\Local\Temp\tmp900F.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:532
        • C:\Users\Public\vbc.exe
          "C:\Users\Public\vbc.exe"
          3⤵
          • Executes dropped EXE
          • 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:1996
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "DPI Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp930C.tmp"
            4⤵
            • Creates scheduled task(s)
            PID:1396
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "DPI Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp93C8.tmp"
            4⤵
            • Creates scheduled task(s)
            PID:1796

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scripting

    1
    T1064

    Scheduled Task

    1
    T1053

    Exploitation for Client Execution

    1
    T1203

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Scripting

    1
    T1064

    Modify Registry

    2
    T1112

    Discovery

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp900F.tmp
      MD5

      e470967e11fce24e798c0fe9f6c2e1cf

      SHA1

      27adf961345f89d17dc061722b19ac5fe970a5b3

      SHA256

      e914681fc45c1e9636a15a0dd6d2f9d505dd92a863b32ad9be4c05942213d6a0

      SHA512

      ed45e5105b8bbacdebef6b4cb08004ac388e686b6f75214464f797ba1f57758213e4796d6265707ec5209733b2c5e35a22728840296aa7efda13d5be3a927aac

    • C:\Users\Admin\AppData\Local\Temp\tmp930C.tmp
      MD5

      deb609c2718f3cdffec272701c7cbefa

      SHA1

      41371e8823d438d91ecf9a84738fd179204353df

      SHA256

      331ff9d8f5a059660b5e9f4141cecd44b42b2a066f1053f59f87b5c1e5ec6ec4

      SHA512

      9f976c70e4c3e11674f122f29585169bbb9ce8e0cddbbc1d1705169b1b36175e17ab4986753d62f7e9e84d80a9a3077626e22ab7ee26b2b1f2dd2a9b4734385f

    • C:\Users\Admin\AppData\Local\Temp\tmp93C8.tmp
      MD5

      a9af285136db016a568e4a53208f21d0

      SHA1

      e1afef2b7ee8ae945353315daa19a15574b435b7

      SHA256

      7dce876e35550f4a5b8ce8a8bbab3b0ccd7c5b8660f9db4b832466b77e3a8b7c

      SHA512

      80a1f5e463a87cddc0f66336e2dc4262daf98984c6f6c662c3615d615ebe7c58677c3d694edb3bd7816ccee969aae967c7efe8526ba423f274ac1210c0c8bd6e

    • C:\Users\Public\vbc.exe
      MD5

      84e84f8a391847222863e17eecbc92e1

      SHA1

      8949740d846d92778eaefd5ec628146634489333

      SHA256

      decbe1d976ee44f0300ec595e30320ba55c50afe995de7c6e1b3e610b77fa564

      SHA512

      539e0c2f93142591af96bfd013fbdd88f1293f6f8ca434ced23d4e204c03779b878660376a891c3c244bbfd6c7896a8b2b5cbc4e975daf7f9d5635d08f378032

    • C:\Users\Public\vbc.exe
      MD5

      84e84f8a391847222863e17eecbc92e1

      SHA1

      8949740d846d92778eaefd5ec628146634489333

      SHA256

      decbe1d976ee44f0300ec595e30320ba55c50afe995de7c6e1b3e610b77fa564

      SHA512

      539e0c2f93142591af96bfd013fbdd88f1293f6f8ca434ced23d4e204c03779b878660376a891c3c244bbfd6c7896a8b2b5cbc4e975daf7f9d5635d08f378032

    • C:\Users\Public\vbc.exe
      MD5

      84e84f8a391847222863e17eecbc92e1

      SHA1

      8949740d846d92778eaefd5ec628146634489333

      SHA256

      decbe1d976ee44f0300ec595e30320ba55c50afe995de7c6e1b3e610b77fa564

      SHA512

      539e0c2f93142591af96bfd013fbdd88f1293f6f8ca434ced23d4e204c03779b878660376a891c3c244bbfd6c7896a8b2b5cbc4e975daf7f9d5635d08f378032

    • \Users\Public\vbc.exe
      MD5

      84e84f8a391847222863e17eecbc92e1

      SHA1

      8949740d846d92778eaefd5ec628146634489333

      SHA256

      decbe1d976ee44f0300ec595e30320ba55c50afe995de7c6e1b3e610b77fa564

      SHA512

      539e0c2f93142591af96bfd013fbdd88f1293f6f8ca434ced23d4e204c03779b878660376a891c3c244bbfd6c7896a8b2b5cbc4e975daf7f9d5635d08f378032

    • \Users\Public\vbc.exe
      MD5

      84e84f8a391847222863e17eecbc92e1

      SHA1

      8949740d846d92778eaefd5ec628146634489333

      SHA256

      decbe1d976ee44f0300ec595e30320ba55c50afe995de7c6e1b3e610b77fa564

      SHA512

      539e0c2f93142591af96bfd013fbdd88f1293f6f8ca434ced23d4e204c03779b878660376a891c3c244bbfd6c7896a8b2b5cbc4e975daf7f9d5635d08f378032

    • \Users\Public\vbc.exe
      MD5

      84e84f8a391847222863e17eecbc92e1

      SHA1

      8949740d846d92778eaefd5ec628146634489333

      SHA256

      decbe1d976ee44f0300ec595e30320ba55c50afe995de7c6e1b3e610b77fa564

      SHA512

      539e0c2f93142591af96bfd013fbdd88f1293f6f8ca434ced23d4e204c03779b878660376a891c3c244bbfd6c7896a8b2b5cbc4e975daf7f9d5635d08f378032

    • \Users\Public\vbc.exe
      MD5

      84e84f8a391847222863e17eecbc92e1

      SHA1

      8949740d846d92778eaefd5ec628146634489333

      SHA256

      decbe1d976ee44f0300ec595e30320ba55c50afe995de7c6e1b3e610b77fa564

      SHA512

      539e0c2f93142591af96bfd013fbdd88f1293f6f8ca434ced23d4e204c03779b878660376a891c3c244bbfd6c7896a8b2b5cbc4e975daf7f9d5635d08f378032

    • memory/532-79-0x0000000000000000-mapping.dmp
    • memory/1332-74-0x000007FEFBFB1000-0x000007FEFBFB3000-memory.dmp
      Filesize

      8KB

    • memory/1332-72-0x0000000000000000-mapping.dmp
    • memory/1396-87-0x0000000000000000-mapping.dmp
    • memory/1608-70-0x0000000001310000-0x0000000001311000-memory.dmp
      Filesize

      4KB

    • memory/1608-75-0x00000000009C0000-0x00000000009C1000-memory.dmp
      Filesize

      4KB

    • memory/1608-77-0x0000000005110000-0x000000000518F000-memory.dmp
      Filesize

      508KB

    • memory/1608-78-0x0000000000C20000-0x0000000000C5C000-memory.dmp
      Filesize

      240KB

    • memory/1608-73-0x0000000000A00000-0x0000000000A14000-memory.dmp
      Filesize

      80KB

    • memory/1608-67-0x0000000000000000-mapping.dmp
    • memory/1732-62-0x0000000076691000-0x0000000076693000-memory.dmp
      Filesize

      8KB

    • memory/1796-89-0x0000000000000000-mapping.dmp
    • memory/1976-76-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1976-59-0x00000000729C1000-0x00000000729C4000-memory.dmp
      Filesize

      12KB

    • memory/1976-61-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/1976-60-0x0000000070441000-0x0000000070443000-memory.dmp
      Filesize

      8KB

    • memory/1996-82-0x000000000041E792-mapping.dmp
    • memory/1996-84-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1996-81-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1996-86-0x0000000000ED0000-0x0000000000ED1000-memory.dmp
      Filesize

      4KB

    • memory/1996-91-0x0000000000390000-0x0000000000395000-memory.dmp
      Filesize

      20KB

    • memory/1996-92-0x0000000000570000-0x0000000000589000-memory.dmp
      Filesize

      100KB

    • memory/1996-93-0x00000000003A0000-0x00000000003A3000-memory.dmp
      Filesize

      12KB