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Analysis

  • max time kernel
    150s
  • 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
    21/10/2024, 00:26

General

  • Target

    8e23ac8eb73d1d3704b3512394e73131f8b3b3606fd980068e2e90078d5d7103.exe

  • Size

    80KB

  • MD5

    85e79fa13d873aa857cc7e58828b8b91

  • SHA1

    f96a4d9e4ee7cfcdafff95859abbcd806ed6dc1d

  • SHA256

    8e23ac8eb73d1d3704b3512394e73131f8b3b3606fd980068e2e90078d5d7103

  • SHA512

    0fc152673f40f814f40ef59208836e61fd3d51a5b8b60812ae1c9c5eb6838ce790d735e74cf47a0fe53bdbcef2c90b7a01ef890131ffcb5aeca465ea1168c289

  • SSDEEP

    1536:dPvK/3zvzVQtCsscKvWnjzJxuOmb54vHTL6lm:diqCspTzVmb5uHv6lm

Malware Config

Extracted

Family

blacknet

Botnet

HacKed

C2

https://lovegunny.net/

Mutex

BN[GnFquUJG-0548378]

Attributes
  • antivm

    false

  • elevate_uac

    true

  • install_name

    WindowsUpdate.exe

  • splitter

    |BN|

  • start_name

    cde2f914e4cce7f13b2c1cec7b6da970

  • startup

    false

  • usb_spread

    true

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\8e23ac8eb73d1d3704b3512394e73131f8b3b3606fd980068e2e90078d5d7103.exe
    "C:\Users\Admin\AppData\Local\Temp\8e23ac8eb73d1d3704b3512394e73131f8b3b3606fd980068e2e90078d5d7103.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:4844
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Get-MpPreference -verbose
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3948
    • 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:3364
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Get-MpPreference -verbose
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2704

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

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

    77d622bb1a5b250869a3238b9bc1402b

    SHA1

    d47f4003c2554b9dfc4c16f22460b331886b191b

    SHA256

    f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

    SHA512

    d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

    Filesize

    80KB

    MD5

    85e79fa13d873aa857cc7e58828b8b91

    SHA1

    f96a4d9e4ee7cfcdafff95859abbcd806ed6dc1d

    SHA256

    8e23ac8eb73d1d3704b3512394e73131f8b3b3606fd980068e2e90078d5d7103

    SHA512

    0fc152673f40f814f40ef59208836e61fd3d51a5b8b60812ae1c9c5eb6838ce790d735e74cf47a0fe53bdbcef2c90b7a01ef890131ffcb5aeca465ea1168c289

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sak3bdgs.vot.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/3364-63-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/3364-62-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/3364-61-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/3364-36-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/3364-35-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/3364-31-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/3948-46-0x00000168DCBF0000-0x00000168DCC12000-memory.dmp

    Filesize

    136KB

  • memory/4844-7-0x000000001C8D0000-0x000000001C91C000-memory.dmp

    Filesize

    304KB

  • memory/4844-34-0x0000000020CD0000-0x0000000020CD4000-memory.dmp

    Filesize

    16KB

  • memory/4844-15-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/4844-16-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/4844-13-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/4844-29-0x00007FFBF2F45000-0x00007FFBF2F46000-memory.dmp

    Filesize

    4KB

  • memory/4844-30-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/4844-10-0x000000001FA80000-0x000000001FAE2000-memory.dmp

    Filesize

    392KB

  • memory/4844-9-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/4844-14-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/4844-8-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/4844-33-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/4844-0-0x00007FFBF2F45000-0x00007FFBF2F46000-memory.dmp

    Filesize

    4KB

  • memory/4844-6-0x000000001BB90000-0x000000001BB98000-memory.dmp

    Filesize

    32KB

  • memory/4844-5-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/4844-4-0x000000001C770000-0x000000001C80C000-memory.dmp

    Filesize

    624KB

  • memory/4844-3-0x000000001C150000-0x000000001C61E000-memory.dmp

    Filesize

    4.8MB

  • memory/4844-2-0x00007FFBF2C90000-0x00007FFBF3631000-memory.dmp

    Filesize

    9.6MB

  • memory/4844-1-0x000000001BBD0000-0x000000001BC76000-memory.dmp

    Filesize

    664KB