Analysis

  • max time kernel
    145s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 02:39

General

  • Target

    RFQ-P.O DETAIL PRICE PER MTR .exe

  • Size

    560KB

  • MD5

    5ef25cdfe80cee4665368d6465f4d73f

  • SHA1

    1843f9ff9786732c2b7b50864f848124c1d95e34

  • SHA256

    1a5a50f2ed013719d08a9eb60588a626aa6e0e58762ce7721dfbdc56e968c63c

  • SHA512

    0b12b7de85b0ce4a8f4235334ecb0c60b4db2a503c8ddaa0970416b49b0adadb85b27d8fedad656ae4eca8dc398c32fa8d973badfac20866f47373797f68856a

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

masterwork.ydns.eu:2310

127.0.0.1:2310

Mutex

7dacfffd-e900-45d5-a878-74cb2c59d5c1

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-05-24T15:02:46.236911836Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    2310

  • default_group

    Default

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    true

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    7dacfffd-e900-45d5-a878-74cb2c59d5c1

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    masterwork.ydns.eu

  • 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.

  • 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RFQ-P.O DETAIL PRICE PER MTR .exe
    "C:\Users\Admin\AppData\Local\Temp\RFQ-P.O DETAIL PRICE PER MTR .exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1280
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HxVZuVwjbs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp954E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1392
    • C:\Users\Admin\AppData\Local\Temp\RFQ-P.O DETAIL PRICE PER MTR .exe
      "{path}"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1296

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp954E.tmp

    Filesize

    1KB

    MD5

    722836579efcd386d1e5b6c3e5941b35

    SHA1

    8a74622cf7722605af0c8cce2fa2ef465cf8e92e

    SHA256

    a346171b2a8be9f5c2e55cbfaf216e27779c788a64eec761e020a7f648201d55

    SHA512

    54a74c93926985f49c8cdd81876559bba8185f3b0d0f4088c539f443bc55f6c3ed5216f87be828b96a94bbb21ed6f9a1d5ee1f1ef4690a44b130aa581746b273

  • memory/1280-55-0x00000000756E1000-0x00000000756E3000-memory.dmp

    Filesize

    8KB

  • memory/1280-56-0x0000000000450000-0x0000000000460000-memory.dmp

    Filesize

    64KB

  • memory/1280-57-0x0000000005000000-0x000000000505E000-memory.dmp

    Filesize

    376KB

  • memory/1280-58-0x0000000000730000-0x0000000000768000-memory.dmp

    Filesize

    224KB

  • memory/1280-54-0x0000000000EC0000-0x0000000000F52000-memory.dmp

    Filesize

    584KB

  • memory/1296-61-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1296-62-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1296-64-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1296-65-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1296-68-0x000000000041E792-mapping.dmp

  • memory/1296-67-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1296-70-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1296-72-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1296-74-0x00000000004E0000-0x00000000004EA000-memory.dmp

    Filesize

    40KB

  • memory/1296-75-0x00000000004F0000-0x000000000050E000-memory.dmp

    Filesize

    120KB

  • memory/1296-76-0x0000000000610000-0x000000000061A000-memory.dmp

    Filesize

    40KB

  • memory/1392-59-0x0000000000000000-mapping.dmp