Analysis

  • max time kernel
    120s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-12-2024 01:39

General

  • Target

    e2b98f16b240560bdbcb6a044b83333a9a726bdbe99868c4df934af0582f02f0.exe

  • Size

    1.0MB

  • MD5

    99d403a61cae597889b28675946784e8

  • SHA1

    0a338766fa36dc694e4815bfa3447e17e97630dc

  • SHA256

    e2b98f16b240560bdbcb6a044b83333a9a726bdbe99868c4df934af0582f02f0

  • SHA512

    18f89173769938983b13d97472e516ba9fe69e5840f6bb5e8b388014abad4f9c6fdf24c552ca47771374485df48a8412a60650b84b4b27300d4ab763f3e0dd64

  • SSDEEP

    24576:Jur9gkEPGcHHXYDYDa6naGhywpCjq7jUv7cF6kZ6YriDfZ49p50/m:Ur9gNGKXYD+naGEsBXUv66k8o4yp5wm

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

testwork.kozow.com:8906

Mutex

bd6fc7b5-d48b-4e23-98f7-784bd3ef305c

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    testwork.kozow.com

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2019-02-16T16:47:25.218235636Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8906

  • default_group

    star

  • 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

    bd6fc7b5-d48b-4e23-98f7-784bd3ef305c

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    testwork.kozow.com

  • 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.

  • Nanocore family
  • Drops startup file 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • AutoIT Executable 12 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 IoCs
  • UPX packed file 13 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 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\e2b98f16b240560bdbcb6a044b83333a9a726bdbe99868c4df934af0582f02f0.exe
    "C:\Users\Admin\AppData\Local\Temp\e2b98f16b240560bdbcb6a044b83333a9a726bdbe99868c4df934af0582f02f0.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2216
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
      2⤵
      • Checks whether UAC is enabled
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:4916

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2216-25-0x0000000000F40000-0x00000000010F1000-memory.dmp

    Filesize

    1.7MB

  • memory/2216-17-0x0000000000F40000-0x00000000010F1000-memory.dmp

    Filesize

    1.7MB

  • memory/2216-30-0x0000000000F40000-0x00000000010F1000-memory.dmp

    Filesize

    1.7MB

  • memory/2216-29-0x0000000000F40000-0x00000000010F1000-memory.dmp

    Filesize

    1.7MB

  • memory/2216-28-0x0000000000F40000-0x00000000010F1000-memory.dmp

    Filesize

    1.7MB

  • memory/2216-14-0x0000000000F40000-0x00000000010F1000-memory.dmp

    Filesize

    1.7MB

  • memory/2216-6-0x0000000001840000-0x0000000001841000-memory.dmp

    Filesize

    4KB

  • memory/2216-0-0x0000000000F40000-0x00000000010F1000-memory.dmp

    Filesize

    1.7MB

  • memory/2216-22-0x0000000000F40000-0x00000000010F1000-memory.dmp

    Filesize

    1.7MB

  • memory/2216-27-0x0000000000F40000-0x00000000010F1000-memory.dmp

    Filesize

    1.7MB

  • memory/2216-31-0x0000000000F40000-0x00000000010F1000-memory.dmp

    Filesize

    1.7MB

  • memory/2216-26-0x0000000000F40000-0x00000000010F1000-memory.dmp

    Filesize

    1.7MB

  • memory/2216-18-0x0000000001840000-0x0000000001841000-memory.dmp

    Filesize

    4KB

  • memory/2216-23-0x0000000000F40000-0x00000000010F1000-memory.dmp

    Filesize

    1.7MB

  • memory/2216-24-0x0000000000F40000-0x00000000010F1000-memory.dmp

    Filesize

    1.7MB

  • memory/4916-15-0x00000000738C0000-0x0000000073E71000-memory.dmp

    Filesize

    5.7MB

  • memory/4916-8-0x0000000000780000-0x00000000007B8000-memory.dmp

    Filesize

    224KB

  • memory/4916-19-0x00000000738C2000-0x00000000738C3000-memory.dmp

    Filesize

    4KB

  • memory/4916-13-0x00000000738C0000-0x0000000073E71000-memory.dmp

    Filesize

    5.7MB

  • memory/4916-12-0x00000000738C2000-0x00000000738C3000-memory.dmp

    Filesize

    4KB

  • memory/4916-21-0x00000000738C0000-0x0000000073E71000-memory.dmp

    Filesize

    5.7MB

  • memory/4916-20-0x00000000738C0000-0x0000000073E71000-memory.dmp

    Filesize

    5.7MB