Analysis

  • max time kernel
    120s
  • max time network
    116s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-10-2024 14:56

General

  • Target

    8f3a92b9516e65e056a871a67a6bf71d1102ecf3454b0b969d9603cb75304c5cN.exe

  • Size

    80KB

  • MD5

    82d0b898dd08b75f03a7be31c91a3d30

  • SHA1

    1a9e50f6c1dd61dbc878d14ea69ea6b3808539d0

  • SHA256

    8f3a92b9516e65e056a871a67a6bf71d1102ecf3454b0b969d9603cb75304c5c

  • SHA512

    fee20ab4c4bf2f531891275d6e8f7938dc26270937a1397f3c035b6c9ee70590b2f75109927ee99928362f850ebbda790d78fc4479ade0cabe381bdce0ba4018

  • SSDEEP

    1536:dPvK/3zvzVQtCsscKvWzjzJxuOmb54vHTL6lm:diqCspHzVmb5uHv6lm

Malware Config

Signatures

  • BlackNET

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

  • BlackNET payload 1 IoCs
  • 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.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs
  • 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 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8f3a92b9516e65e056a871a67a6bf71d1102ecf3454b0b969d9603cb75304c5cN.exe
    "C:\Users\Admin\AppData\Local\Temp\8f3a92b9516e65e056a871a67a6bf71d1102ecf3454b0b969d9603cb75304c5cN.exe"
    1⤵
    • Modifies Windows Defender Real-time Protection settings
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:224
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Get-MpPreference -verbose
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1544
    • C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3208
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Get-MpPreference -verbose
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1168

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    944B

    MD5

    cadef9abd087803c630df65264a6c81c

    SHA1

    babbf3636c347c8727c35f3eef2ee643dbcc4bd2

    SHA256

    cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

    SHA512

    7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

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

    Filesize

    80KB

    MD5

    82d0b898dd08b75f03a7be31c91a3d30

    SHA1

    1a9e50f6c1dd61dbc878d14ea69ea6b3808539d0

    SHA256

    8f3a92b9516e65e056a871a67a6bf71d1102ecf3454b0b969d9603cb75304c5c

    SHA512

    fee20ab4c4bf2f531891275d6e8f7938dc26270937a1397f3c035b6c9ee70590b2f75109927ee99928362f850ebbda790d78fc4479ade0cabe381bdce0ba4018

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_e3ej0qwd.pp0.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/224-8-0x00007FFEB3DF0000-0x00007FFEB4791000-memory.dmp

    Filesize

    9.6MB

  • memory/224-40-0x0000000020930000-0x0000000020A30000-memory.dmp

    Filesize

    1024KB

  • memory/224-7-0x000000001CBE0000-0x000000001CC2C000-memory.dmp

    Filesize

    304KB

  • memory/224-6-0x0000000001810000-0x0000000001818000-memory.dmp

    Filesize

    32KB

  • memory/224-0-0x00007FFEB40A5000-0x00007FFEB40A6000-memory.dmp

    Filesize

    4KB

  • memory/224-9-0x00007FFEB3DF0000-0x00007FFEB4791000-memory.dmp

    Filesize

    9.6MB

  • memory/224-10-0x000000001DE00000-0x000000001DE62000-memory.dmp

    Filesize

    392KB

  • memory/224-13-0x00007FFEB3DF0000-0x00007FFEB4791000-memory.dmp

    Filesize

    9.6MB

  • memory/224-14-0x00007FFEB3DF0000-0x00007FFEB4791000-memory.dmp

    Filesize

    9.6MB

  • memory/224-15-0x00007FFEB3DF0000-0x00007FFEB4791000-memory.dmp

    Filesize

    9.6MB

  • memory/224-16-0x00007FFEB3DF0000-0x00007FFEB4791000-memory.dmp

    Filesize

    9.6MB

  • memory/224-1-0x000000001BF60000-0x000000001C006000-memory.dmp

    Filesize

    664KB

  • memory/224-4-0x000000001CA80000-0x000000001CB1C000-memory.dmp

    Filesize

    624KB

  • memory/224-2-0x00007FFEB3DF0000-0x00007FFEB4791000-memory.dmp

    Filesize

    9.6MB

  • memory/224-48-0x00007FFEB3DF0000-0x00007FFEB4791000-memory.dmp

    Filesize

    9.6MB

  • memory/224-3-0x000000001C4E0000-0x000000001C9AE000-memory.dmp

    Filesize

    4.8MB

  • memory/224-47-0x00007FFEB3DF0000-0x00007FFEB4791000-memory.dmp

    Filesize

    9.6MB

  • memory/224-41-0x0000000020930000-0x0000000020A30000-memory.dmp

    Filesize

    1024KB

  • memory/224-46-0x00007FFEB40A5000-0x00007FFEB40A6000-memory.dmp

    Filesize

    4KB

  • memory/224-5-0x00007FFEB3DF0000-0x00007FFEB4791000-memory.dmp

    Filesize

    9.6MB

  • memory/224-39-0x0000000020930000-0x0000000020A30000-memory.dmp

    Filesize

    1024KB

  • memory/1544-38-0x00007FFEB0560000-0x00007FFEB1021000-memory.dmp

    Filesize

    10.8MB

  • memory/1544-35-0x00007FFEB0560000-0x00007FFEB1021000-memory.dmp

    Filesize

    10.8MB

  • memory/1544-52-0x00007FFEB0560000-0x00007FFEB1021000-memory.dmp

    Filesize

    10.8MB

  • memory/1544-34-0x0000022183DC0000-0x0000022183DE2000-memory.dmp

    Filesize

    136KB

  • memory/1544-17-0x00007FFEB0563000-0x00007FFEB0565000-memory.dmp

    Filesize

    8KB

  • memory/3208-49-0x00000000017A0000-0x00000000017B0000-memory.dmp

    Filesize

    64KB

  • memory/3208-65-0x00000000017A0000-0x00000000017B0000-memory.dmp

    Filesize

    64KB