Overview

overview

10

Static

static

10

Client.exe

windows7-x64

10

Client.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    93s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-10-2022 08:47

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General

  • Target

    Client.exe

  • Size

    81KB

  • MD5

    d504f7de6fc5459ee783b868766c1c4b

  • SHA1

    f31c98177ddfed34d1aa4bbb15b4dd22a887bf7a

  • SHA256

    753af27307876aa774a1f942184312dd73fa8f85331a5bc8c0f35dede2a5702a

  • SHA512

    9c42c754c70d4b82f120d380faf615e8ff118668ffd56e5fdc0218224be1a22c91f402f656fe625092f6d6070131b2e9c399e8e430eac2a944376459ef62786e

  • SSDEEP

    1536:JZuhD5z28TCRZyDeK0uKsA1HdCbv42jYLe81d:5OeKKJwbvTj6eud

Score
10/10
blacknetbotpersistencetrojan

Malware Config

Extracted

Family

blacknet

Version

v3.5 Public

Botnet

bot

C2

http://52.34.77.168:54948

Mutex

BN[mIgYVgxM-7572066]

Attributes
  • antivm

    false

  • elevate_uac

    false

  • install_name

    svchost.exe

  • splitter

    |BN|

  • start_name

    14247ae8e9bdf8a07859c46cc6c701e5

  • startup

    true

  • usb_spread

    true

Signatures

  • BlackNET

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

    trojanblacknet
  • BlackNET payload 2 IoCs
  • Contains code to disable Windows Defender 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 44 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4508
    • C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\svchost.exe
      "C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\svchost.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:4680

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

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

    81KB

    MD5

    d504f7de6fc5459ee783b868766c1c4b

    SHA1

    f31c98177ddfed34d1aa4bbb15b4dd22a887bf7a

    SHA256

    753af27307876aa774a1f942184312dd73fa8f85331a5bc8c0f35dede2a5702a

    SHA512

    9c42c754c70d4b82f120d380faf615e8ff118668ffd56e5fdc0218224be1a22c91f402f656fe625092f6d6070131b2e9c399e8e430eac2a944376459ef62786e

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\svchost.exe
    Filesize

    81KB

    MD5

    d504f7de6fc5459ee783b868766c1c4b

    SHA1

    f31c98177ddfed34d1aa4bbb15b4dd22a887bf7a

    SHA256

    753af27307876aa774a1f942184312dd73fa8f85331a5bc8c0f35dede2a5702a

    SHA512

    9c42c754c70d4b82f120d380faf615e8ff118668ffd56e5fdc0218224be1a22c91f402f656fe625092f6d6070131b2e9c399e8e430eac2a944376459ef62786e

    Download Submit
  • memory/4508-132-0x00007FFAAD560000-0x00007FFAADF96000-memory.dmp
    Filesize

    10.2MB

    Download
  • memory/4508-133-0x000000000131A000-0x000000000131F000-memory.dmp
    Filesize

    20KB

    Download
  • memory/4508-134-0x000000000131A000-0x000000000131F000-memory.dmp
    Filesize

    20KB

    Download
  • memory/4508-139-0x000000000131A000-0x000000000131F000-memory.dmp
    Filesize

    20KB

    Download
  • memory/4680-135-0x0000000000000000-mapping.dmp
    Download
  • memory/4680-138-0x00007FFAAD560000-0x00007FFAADF96000-memory.dmp
    Filesize

    10.2MB

    Download