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Analysis

  • max time kernel
    6s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/10/2024, 17:57

General

  • Target

    ea40fae1fcaec1107a89480b3b21216182eafc64cea03128df398d74b46d8771N.exe

  • Size

    70KB

  • MD5

    acc594e4d7fba75dded3fe9c135adb20

  • SHA1

    e648845ed11dd194fb771c61bc14c5eac129b642

  • SHA256

    ea40fae1fcaec1107a89480b3b21216182eafc64cea03128df398d74b46d8771

  • SHA512

    8528f49d17aa46b760bb0755abf0d821db3bd77f2e95ccfd1035f77db266a510d3c2a2a15e1ea444b540819af2ae988996f67f8379a77e42e18c27eb46f3e907

  • SSDEEP

    1536:gFTnqpKxynVHGeifCSzTPb542HkLbvJfxa:gFTqGeifrvb59H+bvJ5a

Malware Config

Signatures

  • BlackNET

    BlackNET is an open source remote access tool written in VB.NET.

  • BlackNET payload 1 IoCs
  • Blacknet family
  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ea40fae1fcaec1107a89480b3b21216182eafc64cea03128df398d74b46d8771N.exe
    "C:\Users\Admin\AppData\Local\Temp\ea40fae1fcaec1107a89480b3b21216182eafc64cea03128df398d74b46d8771N.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3728
    • C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"
      2⤵
      • Executes dropped EXE
      PID:640

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe

    Filesize

    70KB

    MD5

    acc594e4d7fba75dded3fe9c135adb20

    SHA1

    e648845ed11dd194fb771c61bc14c5eac129b642

    SHA256

    ea40fae1fcaec1107a89480b3b21216182eafc64cea03128df398d74b46d8771

    SHA512

    8528f49d17aa46b760bb0755abf0d821db3bd77f2e95ccfd1035f77db266a510d3c2a2a15e1ea444b540819af2ae988996f67f8379a77e42e18c27eb46f3e907

  • memory/640-41-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-31-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-50-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-49-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-48-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-47-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-46-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-45-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-44-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-30-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-32-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-43-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-40-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-38-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-35-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/640-42-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/3728-10-0x000000001D430000-0x000000001D492000-memory.dmp

    Filesize

    392KB

  • memory/3728-14-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/3728-29-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/3728-33-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/3728-34-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/3728-28-0x00007FFEF72D5000-0x00007FFEF72D6000-memory.dmp

    Filesize

    4KB

  • memory/3728-37-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/3728-1-0x000000001BA70000-0x000000001BB16000-memory.dmp

    Filesize

    664KB

  • memory/3728-39-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/3728-3-0x000000001BFF0000-0x000000001C4BE000-memory.dmp

    Filesize

    4.8MB

  • memory/3728-0-0x00007FFEF72D5000-0x00007FFEF72D6000-memory.dmp

    Filesize

    4KB

  • memory/3728-13-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/3728-11-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/3728-9-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/3728-8-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/3728-7-0x000000001C730000-0x000000001C77C000-memory.dmp

    Filesize

    304KB

  • memory/3728-6-0x0000000001620000-0x0000000001628000-memory.dmp

    Filesize

    32KB

  • memory/3728-5-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB

  • memory/3728-4-0x000000001C5D0000-0x000000001C66C000-memory.dmp

    Filesize

    624KB

  • memory/3728-2-0x00007FFEF7020000-0x00007FFEF79C1000-memory.dmp

    Filesize

    9.6MB