Analysis

  • max time kernel
    142s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    30-01-2025 03:14

General

  • Target

    6a19ede919d3ef32c74ddbcefb4bfd3ef61ba2a86739978ed337639193678edb.exe

  • Size

    823KB

  • MD5

    0ddcd72fe68a08cdba7dcd88b558e119

  • SHA1

    5115f0642f1406b87bc82b949b6ee7610bbceab7

  • SHA256

    6a19ede919d3ef32c74ddbcefb4bfd3ef61ba2a86739978ed337639193678edb

  • SHA512

    3f4e73167eca733f2d683907e6740dc7679d221dbd6d4c90a575158a04462ab4cf98a3e59500dc804988524ce8933d1e512c04fdf3cb83d6af0f72aaac52d131

  • SSDEEP

    12288:OzSggsivGjBjqrIbRC8D0No3nvudnBlGL3q74USqpsHcCbiqWiEBKz6o76:OzUmEGYnP63q74USk2biSnz

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

91.92.240.88:2777

Mutex

25449be1-a962-4d47-a9f7-c613578ec634

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    91.92.240.88

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-04-19T10:57:33.704241736Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    2777

  • default_group

    Default

  • 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

    25449be1-a962-4d47-a9f7-c613578ec634

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    91.92.240.88

  • 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.

  • Nanocore family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 36 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6a19ede919d3ef32c74ddbcefb4bfd3ef61ba2a86739978ed337639193678edb.exe
    "C:\Users\Admin\AppData\Local\Temp\6a19ede919d3ef32c74ddbcefb4bfd3ef61ba2a86739978ed337639193678edb.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2480
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\SrVRkjAnDPHx.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2720
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SrVRkjAnDPHx" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE82D.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1396
    • C:\Users\Admin\AppData\Local\Temp\6a19ede919d3ef32c74ddbcefb4bfd3ef61ba2a86739978ed337639193678edb.exe
      "C:\Users\Admin\AppData\Local\Temp\6a19ede919d3ef32c74ddbcefb4bfd3ef61ba2a86739978ed337639193678edb.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2604
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "SCSI Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE975.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2972
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "SCSI Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpEA02.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2864

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpE82D.tmp

    Filesize

    1KB

    MD5

    566bea610768041bbe46fdf201a75c8a

    SHA1

    2845a8f0bcc369e6837bca630273fdc71aaea06c

    SHA256

    dac75c54297da9d1cf93a45b4db1e3055a708276ff1437ec97d4963eb7bcb9b9

    SHA512

    a32b3ac62cf01bfe37b10a443a8d8a7b025da8920ae69893a73bbccb6ca3e1f8e717bd7e4cff4fcb6ec6dac2ba3e2b7a30427402b5e74e780571ca47bc7569d1

  • C:\Users\Admin\AppData\Local\Temp\tmpE975.tmp

    Filesize

    1KB

    MD5

    bfb1381973fdcfb88c4dc603421d57e0

    SHA1

    2f5bc248c6fd28509b9e1e2ae09820c454440c05

    SHA256

    275c58fd71a32242e9b77681d8db9ae79eff3b768562c0aca28efabf225b4c7c

    SHA512

    2c584ee46f4298aa4f66a89cc3b07a705f2ab60a13d3b7807da659b542a3b6d02adcb1bc030e0f87e7f3a586a4d5bd1f930d82a2071cd5cc1e577b709bc331af

  • C:\Users\Admin\AppData\Local\Temp\tmpEA02.tmp

    Filesize

    1KB

    MD5

    4e71faa3a77029484cfaba423d96618f

    SHA1

    9c837d050bb43d69dc608af809c292e13bca4718

    SHA256

    c470f45efd2e7c4c5b88534a18965a78dce0f8e154d3e45a9d5569ad0e334bdb

    SHA512

    6d014de41352f2b0b494d94cd58188791e81d4e53578d0722110b6827793b735e19c614877f25c61b26233dea1b5f1998ba1240bdc8fa04c87b7e64a4ca15fe0

  • memory/2480-27-0x00000000740F0000-0x00000000747DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2480-1-0x0000000000B10000-0x0000000000BE4000-memory.dmp

    Filesize

    848KB

  • memory/2480-2-0x00000000740F0000-0x00000000747DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2480-3-0x0000000000A40000-0x0000000000A5E000-memory.dmp

    Filesize

    120KB

  • memory/2480-4-0x00000000740FE000-0x00000000740FF000-memory.dmp

    Filesize

    4KB

  • memory/2480-5-0x00000000740F0000-0x00000000747DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2480-6-0x0000000000450000-0x00000000004CE000-memory.dmp

    Filesize

    504KB

  • memory/2480-0-0x00000000740FE000-0x00000000740FF000-memory.dmp

    Filesize

    4KB

  • memory/2604-26-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2604-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2604-20-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2604-18-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2604-16-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2604-23-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2604-24-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2604-14-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2604-35-0x0000000000440000-0x000000000044A000-memory.dmp

    Filesize

    40KB

  • memory/2604-36-0x0000000000450000-0x000000000046E000-memory.dmp

    Filesize

    120KB

  • memory/2604-37-0x00000000004B0000-0x00000000004BA000-memory.dmp

    Filesize

    40KB