Analysis

  • max time kernel
    123s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    26-10-2021 12:30

General

  • Target

    Purchase order_122.doc

  • Size

    434KB

  • MD5

    725c046a9a1bd2456115102985d98dd4

  • SHA1

    dce11d03bb6838c7761865f5149251d01df65946

  • SHA256

    9f33c3635ba0c704775ea7c0388955e5649ab913987d990e05f121b6c1681b7c

  • SHA512

    b2c8c5d2083d6f0b4dd468f9ca191d750e3ffd90bde4fea6e4ee2b88576b9ece5200902482120dcbada52cf0704c743c5539f5b47f268dd6792e0e812142cedb

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

drrkingsleym001.ddns.net:1665

Mutex

70bb352e-dceb-4105-9fdd-010e83e28b1b

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    drrkingsleym001.ddns.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-07-31T04:41:53.700956836Z

  • 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

    1665

  • default_group

    NEW LIFE

  • 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

    70bb352e-dceb-4105-9fdd-010e83e28b1b

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    drrkingsleym001.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.

  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • Nirsoft 3 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 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 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 15 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 52 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\Purchase order_122.doc"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:604
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1000
    • 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:584
      • C:\Users\Admin\AppData\Roaming\catzjt7863.exe
        "C:\Users\Admin\AppData\Roaming\catzjt7863.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1880
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eWoGxZG" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8B5E.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:1732
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
          3⤵
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • Drops file in Program Files directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1064
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "UDP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8DAF.tmp"
            4⤵
            • Creates scheduled task(s)
            PID:428
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "UDP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp8EB9.tmp"
            4⤵
            • Creates scheduled task(s)
            PID:1424
          • \??\c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe
            "c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\thivxldw.uq0"
            4⤵
            • Accesses Microsoft Outlook accounts
            PID:1172
          • \??\c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe
            "c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\iber0bc0.emo"
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:1720

    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

    1
    T1082

    Collection

    Email Collection

    1
    T1114

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\iber0bc0.emo
      MD5

      919e671c3d5959a91ef2d4c377d2b2ff

      SHA1

      b1202b19512bbd390d3d5164792501c87bb42c41

      SHA256

      d2e079df7cf6388315368ba79bf099ad2ff5428af51bf5abf2d99a2d7c5eb651

      SHA512

      f3298256372beab8efe81b2e08d3b3869281f625de1ee13189c6b95eb2134d223df6f64cc9e490dd6b52a53aa936adc17bd5dfe4e50ee0fe420f3ebae276381c

    • C:\Users\Admin\AppData\Local\Temp\thivxldw.uq0
      MD5

      69b2a2e17e78d24abee9f1de2f04811a

      SHA1

      d19c109704e83876ab3527457f9418a7d053aa33

      SHA256

      1b1491f21e64681f8fdc27b2265e2274fb7813eecb6ad8b446d2e431f6300edd

      SHA512

      eb7269979bc4187520636fe3d7b3089f2c7c02e81c4ce2a738ade680f72c61c67fe9577eeaa09d3ca93f34b60be8c434d2cfbfed6566e783f6611279f056150f

    • C:\Users\Admin\AppData\Local\Temp\tmp8DAF.tmp
      MD5

      40b11ef601fb28f9b2e69d36857bf2ec

      SHA1

      b6454020ad2ceed193f4792b77001d0bd741b370

      SHA256

      c51e12d18cc664425f6711d8ae2507068884c7057092cfa11884100e1e9d49e1

      SHA512

      e3c5bcc714cbfca4b8058ddcddf231dcefa69c15881ce3f8123e59ed45cfb5da052b56e1945dcf8dc7f800d62f9a4eecb82bca69a66a1530787aeffeb15e2bd5

    • C:\Users\Admin\AppData\Local\Temp\tmp8EB9.tmp
      MD5

      c4aecdef99eba873119e79616df3f4b0

      SHA1

      b1b3af52655fb633eed909dfed05b64fbbfac37c

      SHA256

      24fd0d87bea36a024449a95f808aaa174e4ed9003cb8a427b67c02411b8a2e0b

      SHA512

      e3f44b07267fccf4f5abd4efe80f2b037ddadc4cb898bdfca9d21ac5d79fcac828950065c2060d3ce125ee971fc3096183afee5287ba9951fbbda7257d8ed8d4

    • C:\Users\Admin\AppData\Roaming\catzjt7863.exe
      MD5

      ace96cf7ef24eeac993b4da172a5a8f0

      SHA1

      fa89615f55a87ef1d9ee9330ec5b0c040f54e8c1

      SHA256

      d4ee80500d9c280e85b290b467592a5910e9d4ee127cfda17ad40467b2c88942

      SHA512

      e1d5279223d7e82003bad73e94b1607b043c0b987987e99dc39ab9790558c4c840cd6949a37f87134fbd13b64c4a2492fb572eebde870db709d2a77c419c7ea1

    • C:\Users\Admin\AppData\Roaming\catzjt7863.exe
      MD5

      ace96cf7ef24eeac993b4da172a5a8f0

      SHA1

      fa89615f55a87ef1d9ee9330ec5b0c040f54e8c1

      SHA256

      d4ee80500d9c280e85b290b467592a5910e9d4ee127cfda17ad40467b2c88942

      SHA512

      e1d5279223d7e82003bad73e94b1607b043c0b987987e99dc39ab9790558c4c840cd6949a37f87134fbd13b64c4a2492fb572eebde870db709d2a77c419c7ea1

    • \Users\Admin\AppData\Roaming\catzjt7863.exe
      MD5

      ace96cf7ef24eeac993b4da172a5a8f0

      SHA1

      fa89615f55a87ef1d9ee9330ec5b0c040f54e8c1

      SHA256

      d4ee80500d9c280e85b290b467592a5910e9d4ee127cfda17ad40467b2c88942

      SHA512

      e1d5279223d7e82003bad73e94b1607b043c0b987987e99dc39ab9790558c4c840cd6949a37f87134fbd13b64c4a2492fb572eebde870db709d2a77c419c7ea1

    • memory/428-77-0x0000000000000000-mapping.dmp
    • memory/604-57-0x0000000076A81000-0x0000000076A83000-memory.dmp
      Filesize

      8KB

    • memory/604-54-0x0000000072D71000-0x0000000072D74000-memory.dmp
      Filesize

      12KB

    • memory/604-84-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/604-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
      Filesize

      64KB

    • memory/604-55-0x00000000707F1000-0x00000000707F3000-memory.dmp
      Filesize

      8KB

    • memory/1000-68-0x000007FEFC271000-0x000007FEFC273000-memory.dmp
      Filesize

      8KB

    • memory/1000-67-0x0000000000000000-mapping.dmp
    • memory/1064-70-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1064-73-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1064-75-0x000000000041E792-mapping.dmp
    • memory/1064-74-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1064-72-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1064-71-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/1064-82-0x00000000022D1000-0x00000000022D2000-memory.dmp
      Filesize

      4KB

    • memory/1064-81-0x00000000022D0000-0x00000000022D1000-memory.dmp
      Filesize

      4KB

    • memory/1064-83-0x00000000022D6000-0x00000000022E7000-memory.dmp
      Filesize

      68KB

    • memory/1172-90-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1172-93-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1172-91-0x0000000000411654-mapping.dmp
    • memory/1172-89-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1172-85-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1172-86-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1172-87-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1172-88-0x0000000000400000-0x000000000041B000-memory.dmp
      Filesize

      108KB

    • memory/1424-79-0x0000000000000000-mapping.dmp
    • memory/1720-96-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/1720-95-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/1720-98-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/1720-97-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/1720-100-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/1720-101-0x0000000000442628-mapping.dmp
    • memory/1720-99-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/1720-103-0x0000000000400000-0x0000000000453000-memory.dmp
      Filesize

      332KB

    • memory/1732-69-0x0000000000000000-mapping.dmp
    • memory/1880-65-0x00000000001E1000-0x00000000001E2000-memory.dmp
      Filesize

      4KB

    • memory/1880-64-0x00000000001E0000-0x00000000001E1000-memory.dmp
      Filesize

      4KB

    • memory/1880-66-0x000000007EF40000-0x000000007EF41000-memory.dmp
      Filesize

      4KB

    • memory/1880-60-0x0000000000000000-mapping.dmp