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Analysis

  • max time kernel
    111s
  • max time network
    115s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03/10/2024, 09:40

General

  • Target

    941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe

  • Size

    415KB

  • MD5

    6d30b8abcb1afe112d465cbc6d426000

  • SHA1

    c75f8ea3ef64c12b1941c026e7857a4bae318ff9

  • SHA256

    941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0

  • SHA512

    d0b7425b48d920e635dbeeada2049587e5de729dbc0938187fb84fedf3659c3f1d49099d50f0c34a2c7582efc11ca063a7705717df40e731468abb487cfc3e1e

  • SSDEEP

    6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU7g:ITNYrnE3bm/CiejewY5v3

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

[email protected]:46218

178.32.224.116:46218

Mutex

4af74541-e3f1-469c-8af7-efe4071b81cf

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    178.32.224.116

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2018-07-28T12:59:38.488799236Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    46218

  • default_group

    tourex

  • 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

    4af74541-e3f1-469c-8af7-efe4071b81cf

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    [email protected]

  • primary_dns_server

  • 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.

  • Executes dropped EXE 1 IoCs
  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe
    "C:\Users\Admin\AppData\Local\Temp\941d700ac27ab23faab16bd7755e61f58cef0dce2f7ab2539c5dbc469e550df0N.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3044
    • C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
      "C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2028
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
        3⤵
        • Checks whether UAC is enabled
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:2752

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe

    Filesize

    415KB

    MD5

    c748ab43fd59a8d85f0823bd4f6686d8

    SHA1

    d0103826af3d4af146cce4bdd47c5653cc97d5ef

    SHA256

    49f04913c0ed52722b98033ee3713afc95bcbfe2cf47064c65c364a0e5bf45a9

    SHA512

    c0a352e349e85405a9054b942a04e59ba68bb863bc51e3e1c76c4910c225b42a89a0cc402c6223b7e71e0de164c3de195a6a5c32bb3f85a821223ba6332357b9

  • memory/2028-12-0x00000000008E0000-0x000000000094E000-memory.dmp

    Filesize

    440KB

  • memory/2028-38-0x0000000074030000-0x000000007471E000-memory.dmp

    Filesize

    6.9MB

  • memory/2028-37-0x0000000074030000-0x000000007471E000-memory.dmp

    Filesize

    6.9MB

  • memory/2028-15-0x0000000074030000-0x000000007471E000-memory.dmp

    Filesize

    6.9MB

  • memory/2028-13-0x0000000074030000-0x000000007471E000-memory.dmp

    Filesize

    6.9MB

  • memory/2752-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2752-30-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2752-36-0x0000000000470000-0x000000000047A000-memory.dmp

    Filesize

    40KB

  • memory/2752-16-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2752-35-0x00000000006C0000-0x00000000006DE000-memory.dmp

    Filesize

    120KB

  • memory/2752-25-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2752-23-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2752-20-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2752-18-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2752-32-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2752-34-0x0000000000460000-0x000000000046A000-memory.dmp

    Filesize

    40KB

  • memory/3044-14-0x0000000074030000-0x000000007471E000-memory.dmp

    Filesize

    6.9MB

  • memory/3044-0-0x000000007403E000-0x000000007403F000-memory.dmp

    Filesize

    4KB

  • memory/3044-3-0x0000000001F80000-0x0000000001FBC000-memory.dmp

    Filesize

    240KB

  • memory/3044-2-0x0000000074030000-0x000000007471E000-memory.dmp

    Filesize

    6.9MB

  • memory/3044-1-0x0000000000920000-0x000000000098E000-memory.dmp

    Filesize

    440KB