blacknet | d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2

Analysis

max time kernel
120s
max time network
113s
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 09:45

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General

Target

d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
Size

80KB
MD5

2d365a835420a9de141125860bbf4070
SHA1

9f5c40351f7f452137e1b3ae0fde9c0fc56174b8
SHA256

d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2
SHA512

1be6956eb46a6f617badb7ee243637f2708a381542470173f5d7be52132965095f1d93c1df51c219024cbd01c26386d489311efcdab09ea32d051b92d844ac7f
SSDEEP

1536:dPvK/3zvzVQtCsscKvW1jzJxuOmb54vHTL6lm:diqCsplzVmb5uHv6lm

Score

10^/10

blacknet evasion persistence trojan

Malware Config

Signatures

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

BlackNET payload 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023caa-19.dat	family_blacknet

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.

resource	yara_rule
behavioral2/files/0x0007000000023caa-19.dat	disable_win_def

Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe

Executes dropped EXE 1 IoCs

pid	Process
4296	WindowsUpdate.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cde2f914e4cce7f13b2c1cec7b6da970 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe"	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4988	powershell.exe
4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
4988	powershell.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe
4296	WindowsUpdate.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
Token: SeDebugPrivilege	4988	powershell.exe
Token: SeDebugPrivilege	4296	WindowsUpdate.exe
Token: SeDebugPrivilege	3832	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4760 wrote to memory of 4988	4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe	89
PID 4760 wrote to memory of 4988	4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe	89
PID 4760 wrote to memory of 4296	4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe	91
PID 4760 wrote to memory of 4296	4760	d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe	91
PID 4296 wrote to memory of 3832	4296	WindowsUpdate.exe	94
PID 4296 wrote to memory of 3832	4296	WindowsUpdate.exe	94

C:\Users\Admin\AppData\Local\Temp\d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.exe
"C:\Users\Admin\AppData\Local\Temp\d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2N.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:4760
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Get-MpPreference -verbose
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4988
- 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:4296
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-MpPreference -verbose
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3832

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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

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

Filesize
944B

MD5
450427af6be6ec710ffb349487871490

SHA1
7cc431b8914d68e01b451a3f6b3e718e22a410a0

SHA256
770115f2b5578724e6f35f1dc5ea28c064c53e8c3e60c69342969cc919d9b23a

SHA512
754766f7221e5598fdc449d83789aaa0961a5d9f9f0571c93f92b06db418aca282fcd31443e737967cf288b1c24d84aa2a8f19a9b799b5f02482954b3c0febb3

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

Filesize
80KB

MD5
2d365a835420a9de141125860bbf4070

SHA1
9f5c40351f7f452137e1b3ae0fde9c0fc56174b8

SHA256
d5dc32b543a9571c6dd027018eb41868df7bd0847269407bfb7ca029f2b290b2

SHA512
1be6956eb46a6f617badb7ee243637f2708a381542470173f5d7be52132965095f1d93c1df51c219024cbd01c26386d489311efcdab09ea32d051b92d844ac7f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3qh1mi4s.boe.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4296-63-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4296-62-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4296-61-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4296-36-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4296-33-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4296-32-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4760-7-0x000000001C0D0000-0x000000001C11C000-memory.dmp

Filesize
304KB

Download
memory/4760-9-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4760-14-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4760-15-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4760-16-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4760-10-0x000000001CB50000-0x000000001CBB2000-memory.dmp

Filesize
392KB

Download
memory/4760-29-0x00007FFC77015000-0x00007FFC77016000-memory.dmp

Filesize
4KB

Download
memory/4760-30-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4760-31-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4760-13-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4760-8-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4760-0-0x00007FFC77015000-0x00007FFC77016000-memory.dmp

Filesize
4KB

Download
memory/4760-35-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4760-1-0x000000001B3C0000-0x000000001B466000-memory.dmp

Filesize
664KB

Download
memory/4760-6-0x0000000000C00000-0x0000000000C08000-memory.dmp

Filesize
32KB

Download
memory/4760-5-0x000000001BF70000-0x000000001C00C000-memory.dmp

Filesize
624KB

Download
memory/4760-3-0x000000001B950000-0x000000001BE1E000-memory.dmp

Filesize
4.8MB

Download
memory/4760-4-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4760-2-0x00007FFC76D60000-0x00007FFC77701000-memory.dmp

Filesize
9.6MB

Download
memory/4988-46-0x0000020363230000-0x0000020363252000-memory.dmp

Filesize
136KB

Download