Analysis

  • max time kernel
    131s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 01:54

General

  • Target

    RFQ#Inquiry 215642.exe

  • Size

    450KB

  • MD5

    577af04414ea52d9d179b90bc48470a5

  • SHA1

    e9f4092c288d5a491528472e5c7b7610a25a200d

  • SHA256

    7c1982f88aa59a9e220b92e280e4fe1d47ef06214aa5784572f688419e3e7ec4

  • SHA512

    707d21a257070403b168816aadbf2c1263821ddf3cefcc9f29013602bee59eb8fae423430dfac819aed3161b9b792df7733b3f87adfbe471dbaf670a1a8ce79f

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

saocris.ddns.net:1930

Mutex

4b2770ba-c0aa-4a47-80a1-1ecd8b69e945

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-05-21T14:35:52.193847036Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    1930

  • default_group

    My Time

  • 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

    4b2770ba-c0aa-4a47-80a1-1ecd8b69e945

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    saocris.ddns.net

  • 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

  • NanoCore

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

  • suricata: ET MALWARE Possible NanoCore C2 60B

    suricata: ET MALWARE Possible NanoCore C2 60B

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ#Inquiry 215642.exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ#Inquiry 215642.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1528
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FArXCSdcskXNfR" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD99E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:992
    • C:\Users\Admin\AppData\Local\Temp\RFQ#Inquiry 215642.exe
      "{path}"
      2⤵
        PID:2036
      • C:\Users\Admin\AppData\Local\Temp\RFQ#Inquiry 215642.exe
        "{path}"
        2⤵
        • Checks whether UAC is enabled
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1200
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "DSL Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDE10.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:584

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpD99E.tmp

      Filesize

      1KB

      MD5

      487347f11e4db875e896ff3f479bcf40

      SHA1

      99841b4e89999650155c52366917dd365369d481

      SHA256

      83a94ebdef18b3119179af453804b13d9e16de0a24646f78f5f4918b47850115

      SHA512

      9cd36269a409b0d887d36434dfe57c1d9da7038faf162420186e941d8fd0bf97b5bce846d2dc4a196bfa818dcebe55213963cd198f379ffe4a109b6552337aea

    • C:\Users\Admin\AppData\Local\Temp\tmpDE10.tmp

      Filesize

      1KB

      MD5

      f3d4003b0a824d1705f1fa4d666f6780

      SHA1

      8d96cef70c46583a1c9e5e55c0fba37b2fc8e1ec

      SHA256

      12f5ab4047fca1841da6ccf819938ae27c12c89d95884a82b174465b5067c1ad

      SHA512

      2a28226e69d58f1faa0ed774837f082f840c04577720062bc4e464750fd217db98e34f2e76fcd7105be4e6b407ecfc9c4dc9b75049f8a2197f50c3b5db35d80c

    • memory/584-74-0x0000000000000000-mapping.dmp

    • memory/992-59-0x0000000000000000-mapping.dmp

    • memory/1200-68-0x000000000041E792-mapping.dmp

    • memory/1200-72-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1200-78-0x0000000001E70000-0x0000000001E7A000-memory.dmp

      Filesize

      40KB

    • memory/1200-61-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1200-77-0x0000000001ED0000-0x0000000001EEE000-memory.dmp

      Filesize

      120KB

    • memory/1200-64-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1200-76-0x00000000005B0000-0x00000000005BA000-memory.dmp

      Filesize

      40KB

    • memory/1200-65-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1200-62-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1200-70-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1200-67-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1528-56-0x00000000002A0000-0x00000000002B0000-memory.dmp

      Filesize

      64KB

    • memory/1528-55-0x0000000075391000-0x0000000075393000-memory.dmp

      Filesize

      8KB

    • memory/1528-54-0x00000000000C0000-0x0000000000136000-memory.dmp

      Filesize

      472KB

    • memory/1528-58-0x0000000000580000-0x00000000005B8000-memory.dmp

      Filesize

      224KB

    • memory/1528-57-0x0000000004210000-0x000000000426E000-memory.dmp

      Filesize

      376KB