Overview

overview

10

Static

static

SK202-8 #Y...87.exe

windows7_x64

10

SK202-8 #Y...87.exe

windows10_x64

10

Analysis

  • max time kernel
    147s
  • max time network
    162s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    21-10-2021 16:25

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General

  • Target

    SK202-8 #YN12-60387.exe

  • Size

    737KB

  • MD5

    7ef62831b23949060085a8d2946523cd

  • SHA1

    5e34a833f23867351a509858fff5e74e9f120aa9

  • SHA256

    301cd4c375459544240e253b5f1fea9e0688d7d1770c69bb06dd9408960543e9

  • SHA512

    72b896e77208151be212134b623feb86b748c03a6b7c1d5c5bc457837f9c333677c598fff0361d819ac3483be167b06104b61599f3a1c0e6869bcde793ac81a0

Score
10/10
nanocoreevasionkeyloggerspywarestealertrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

mec.sytes.net:3259

Mutex

9358a53f-433c-42f5-bd3f-14ae4da528cf

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    mec.sytes.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-04-04T14:41:53.527071936Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    3259

  • default_group

    Mine

  • 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

    9358a53f-433c-42f5-bd3f-14ae4da528cf

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    mec.sytes.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.

    keyloggertrojanstealerspywarenanocore
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • 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.

    persistence
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SK202-8 #YN12-60387.exe
    "C:\Users\Admin\AppData\Local\Temp\SK202-8 #YN12-60387.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2848
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\nLQmvzsfrCEI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5938.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:864
    • C:\Users\Admin\AppData\Local\Temp\SK202-8 #YN12-60387.exe
      "{path}"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1784

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\SK202-8 #YN12-60387.exe.log
    MD5

    5e7bb97636a484b5a87e60373614279a

    SHA1

    36bfdec32eedb141a4a106d89a453326f62593ee

    SHA256

    12ed6e1df2c57556c59dfd6630fd454a9df76166f340c41ee6bc54d98e709e20

    SHA512

    448c62d538e646045d7315ff902b86f614e2dc1eb0959c22c6618fd2c8767c330d24692357559310e6b55b0c35415a14a6ab2d6d9b8d2a03186949b97190fd56

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\tmp5938.tmp
    MD5

    fa5bb4eedd353eebf95432f096d1d67e

    SHA1

    0e03b96b71abcec758bd8791bf241d49bbaaec97

    SHA256

    88b94ec1546e9f03302c69f3f03260f1b41f203730f5bb5241a1e06a2eb594bf

    SHA512

    9b72fbfb8f9aa97b4f773b4cccdb16bf996909f19becae3aa26bb0bb0e090a7d42b27a3145e1ad3151de8dba1a43bb259924d9a850e5bd6b357fc121713d273d

    Download Submit
  • memory/864-117-0x0000000000000000-mapping.dmp
    Download
  • memory/1784-119-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

    Download
  • memory/1784-120-0x000000000041E792-mapping.dmp
    Download
  • memory/1784-122-0x0000000002A70000-0x0000000002A71000-memory.dmp
    Filesize

    4KB

    Download
  • memory/2848-115-0x0000000000D10000-0x0000000000D11000-memory.dmp
    Filesize

    4KB

    Download
  • memory/2848-116-0x0000000000D11000-0x0000000000D12000-memory.dmp
    Filesize

    4KB

    Download