Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    21-10-2024 04:05

General

  • Target

    d8f4512923709691ffb7e81456454aabfa1e2a078925cf665bd2b42939797a8cN.exe

  • Size

    80KB

  • MD5

    5cab03720b8d51dfe2c57fca8fb33df0

  • SHA1

    c69e8eb6cc0def3d3348c5da35116fff75fdb9c6

  • SHA256

    d8f4512923709691ffb7e81456454aabfa1e2a078925cf665bd2b42939797a8c

  • SHA512

    86c192c649f37b985d63977dfcf2477882980ac363ded3660501d790e7aeeb2934e67aa866fd1d865821795fa152ba1ff3e7ed4a855be34aa7083be01e85c709

  • SSDEEP

    1536:dPvK/3zvzVQtCsscKvWujzJxuOmb54vHTL6lm:diqCspozVmb5uHv6lm

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
  • Executes dropped EXE 1 IoCs
  • Windows security modification 2 TTPs 2 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).

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d8f4512923709691ffb7e81456454aabfa1e2a078925cf665bd2b42939797a8cN.exe
    "C:\Users\Admin\AppData\Local\Temp\d8f4512923709691ffb7e81456454aabfa1e2a078925cf665bd2b42939797a8cN.exe"
    1⤵
    • Modifies Windows Defender Real-time Protection settings
    • Windows security modification
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2828
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Get-MpPreference -verbose
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2216
    • C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe
      "C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"
      2⤵
      • Executes dropped EXE
      • Windows security modification
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2848
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Get-MpPreference -verbose
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2280

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab4A4.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

    Filesize

    80KB

    MD5

    5cab03720b8d51dfe2c57fca8fb33df0

    SHA1

    c69e8eb6cc0def3d3348c5da35116fff75fdb9c6

    SHA256

    d8f4512923709691ffb7e81456454aabfa1e2a078925cf665bd2b42939797a8c

    SHA512

    86c192c649f37b985d63977dfcf2477882980ac363ded3660501d790e7aeeb2934e67aa866fd1d865821795fa152ba1ff3e7ed4a855be34aa7083be01e85c709

  • C:\Users\Admin\AppData\Local\Temp\Tar4C7.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

    Filesize

    7KB

    MD5

    36f9fc1d8578bfa5ea2331fd8fa91a3e

    SHA1

    e89e4acabdc323c79f7f3f18b823ed4d6543eb5a

    SHA256

    13a87588ac28354bd574ddc893b8140c4e707338c81838ad108402fa3526f514

    SHA512

    c844cbe1527d198c378b4abdedf4238551235fb7012da86301a32c1e183c62d75ddfea970a1c0eae52fe4d4060a81cbfea2c95cd4fc66576ffda02a10d71c59f

  • memory/2216-58-0x000000001B640000-0x000000001B922000-memory.dmp

    Filesize

    2.9MB

  • memory/2216-59-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

    Filesize

    32KB

  • memory/2280-66-0x0000000002250000-0x0000000002258000-memory.dmp

    Filesize

    32KB

  • memory/2280-65-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

    Filesize

    2.9MB

  • memory/2828-1-0x000007FEF4CE0000-0x000007FEF567D000-memory.dmp

    Filesize

    9.6MB

  • memory/2828-48-0x000007FEF4CE0000-0x000007FEF567D000-memory.dmp

    Filesize

    9.6MB

  • memory/2828-49-0x000007FEF4CE0000-0x000007FEF567D000-memory.dmp

    Filesize

    9.6MB

  • memory/2828-50-0x000007FEF4CE0000-0x000007FEF567D000-memory.dmp

    Filesize

    9.6MB

  • memory/2828-51-0x000007FEF4CE0000-0x000007FEF567D000-memory.dmp

    Filesize

    9.6MB

  • memory/2828-57-0x000007FEF4CE0000-0x000007FEF567D000-memory.dmp

    Filesize

    9.6MB

  • memory/2828-0-0x000007FEF4F9E000-0x000007FEF4F9F000-memory.dmp

    Filesize

    4KB

  • memory/2828-2-0x000007FEF4CE0000-0x000007FEF567D000-memory.dmp

    Filesize

    9.6MB

  • memory/2828-3-0x000007FEF4CE0000-0x000007FEF567D000-memory.dmp

    Filesize

    9.6MB

  • memory/2828-42-0x000007FEF4CE0000-0x000007FEF567D000-memory.dmp

    Filesize

    9.6MB

  • memory/2828-43-0x000007FEF4CE0000-0x000007FEF567D000-memory.dmp

    Filesize

    9.6MB

  • memory/2848-52-0x000007FEF4CE0000-0x000007FEF567D000-memory.dmp

    Filesize

    9.6MB

  • memory/2848-67-0x000007FEF4CE0000-0x000007FEF567D000-memory.dmp

    Filesize

    9.6MB