Overview

overview

10

Static

static

5

DOCS-23665...DF.exe

windows7-x64

10

DOCS-23665...DF.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    141s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-05-2024 12:10

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General

  • Target

    DOCS-2366556-90767485-8755-PDF.exe

  • Size

    1.3MB

  • MD5

    caf38730bc9ad3676f2c9dd88c104cf2

  • SHA1

    6bef0e1e7b1f1072c95515a0b8c5266c790b665f

  • SHA256

    7550a5bbf3edfe86c75adf06bc63de13e9219ef1f09cb86cb70c52c225852e50

  • SHA512

    d0bdd2a3faa72f5b519e14e9d18f64140451827be23ff02ef9e9ba391f8a6b1df78fa98d1e276f789a336fe350a936b82199002bd0097c54b6568b12026fd107

  • SSDEEP

    24576:tAHnh+eWsN3skA4RV1Hom2KXMmHarbwdtCdVHnRXUFh+Ypz5:Mh+ZkldoPK8YaM0zx2hv

Score
10/10
nanocorekeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

yes.dnsabr.com:54985

Mutex

c4a921fe-b6d3-4dc2-bcc3-394abf944589

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    yes.dnsabr.com

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2019-03-04T07:57:52.666055236Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    54985

  • default_group

    YABIAWA

  • 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

    c4a921fe-b6d3-4dc2-bcc3-394abf944589

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    yes.dnsabr.com

  • 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.

    keyloggertrojanstealerspywarenanocore
  • Drops startup file 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\DOCS-2366556-90767485-8755-PDF.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3572
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:3264

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3264-6-0x0000000000340000-0x0000000000378000-memory.dmp
    Filesize

    224KB

    Download
  • memory/3264-11-0x0000000073F72000-0x0000000073F73000-memory.dmp
    Filesize

    4KB

    Download
  • memory/3264-12-0x0000000073F70000-0x0000000074521000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/3264-13-0x0000000073F70000-0x0000000074521000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/3264-16-0x0000000073F70000-0x0000000074521000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/3264-17-0x0000000073F72000-0x0000000073F73000-memory.dmp
    Filesize

    4KB

    Download
  • memory/3264-18-0x0000000073F70000-0x0000000074521000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/3264-19-0x0000000073F70000-0x0000000074521000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/3572-5-0x0000000001040000-0x0000000001041000-memory.dmp
    Filesize

    4KB

    Download