blacknet | e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a

Analysis

max time kernel
150s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-10-2024 03:13

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General

Target

e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
Size

80KB
MD5

b674fc47bf5919c6bae7a2ee6f930c96
SHA1

1bf46d6d3262ee63eb844859c96b46bec26d626a
SHA256

e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a
SHA512

384f6c5bb3e9cc759c4d2a3eed18cbeca51acb047e6fb46690991fcc0064975f706a7b4bc676cf35c8b3220d613c0ac144fc1727bcf496a0101f2c6fe5ca5c0a
SSDEEP

1536:dPvK/3zvzVQtCsscKvWCjzJxuOmb54vHTL6lm:diqCspUzVmb5uHv6lm

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

Processes:

resource	yara_rule
behavioral2/files/0x0008000000023c9a-20.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.

Processes:

resource	yara_rule
behavioral2/files/0x0008000000023c9a-20.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

Processes:

e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.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

Processes:

e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe

Executes dropped EXE 1 IoCs

Processes:

WindowsUpdate.exe

pid	Process
1156	WindowsUpdate.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cde2f914e4cce7f13b2c1cec7b6da970 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe"	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.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

Processes:

e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exepowershell.exeWindowsUpdate.exe

pid	Process
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
1208	powershell.exe
1208	powershell.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe
1156	WindowsUpdate.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exepowershell.exeWindowsUpdate.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
Token: SeDebugPrivilege	1208	powershell.exe
Token: SeDebugPrivilege	1156	WindowsUpdate.exe
Token: SeDebugPrivilege	3620	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exeWindowsUpdate.exe

description	pid	Process	procid_target
PID 2376 wrote to memory of 1208	2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe	94
PID 2376 wrote to memory of 1208	2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe	94
PID 2376 wrote to memory of 1156	2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe	96
PID 2376 wrote to memory of 1156	2376	e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe	96
PID 1156 wrote to memory of 3620	1156	WindowsUpdate.exe	99
PID 1156 wrote to memory of 3620	1156	WindowsUpdate.exe	99

C:\Users\Admin\AppData\Local\Temp\e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.exe
"C:\Users\Admin\AppData\Local\Temp\e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a.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:2376
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Get-MpPreference -verbose
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1208
- 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:1156
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-MpPreference -verbose
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3620

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
fd9152fd0fab56908fe168af91a08303

SHA1
e4e64d449aaae4e5cda388fc492ff8ee0878af24

SHA256
a78dca0d470c353064c51dbe58a9bf408c188b65d44636759aace9011f5b482e

SHA512
c29093187dcc35ba79e20c11a00ad4063cb81bf7b0bc269f3aee66f583ebece5821cf1ac8748e49247a8eb0eccf4e47f5eb4c1f8577327d8a754a807d5a4aa16

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

Filesize
80KB

MD5
b674fc47bf5919c6bae7a2ee6f930c96

SHA1
1bf46d6d3262ee63eb844859c96b46bec26d626a

SHA256
e8b74b9be24b247a12f87c051243e2985f80fc18653cc193ade7b05598046d9a

SHA512
384f6c5bb3e9cc759c4d2a3eed18cbeca51acb047e6fb46690991fcc0064975f706a7b4bc676cf35c8b3220d613c0ac144fc1727bcf496a0101f2c6fe5ca5c0a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_am25hjcd.uxf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1156-69-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/1156-68-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/1156-67-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/1156-37-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/1156-36-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/1156-35-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/1208-52-0x0000024A54AC0000-0x0000024A54AE2000-memory.dmp

Filesize
136KB

Download
memory/2376-16-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-8-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-15-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-17-0x00007FFBA1155000-0x00007FFBA1156000-memory.dmp

Filesize
4KB

Download
memory/2376-28-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-27-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-13-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-0-0x00007FFBA1155000-0x00007FFBA1156000-memory.dmp

Filesize
4KB

Download
memory/2376-29-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-33-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-34-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-10-0x000000001D340000-0x000000001D3A2000-memory.dmp

Filesize
392KB

Download
memory/2376-9-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-14-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-38-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-39-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-42-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-41-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-7-0x000000001C880000-0x000000001C8CC000-memory.dmp

Filesize
304KB

Download
memory/2376-6-0x00000000015B0000-0x00000000015B8000-memory.dmp

Filesize
32KB

Download
memory/2376-5-0x000000001C780000-0x000000001C81C000-memory.dmp

Filesize
624KB

Download
memory/2376-4-0x000000001C210000-0x000000001C6DE000-memory.dmp

Filesize
4.8MB

Download
memory/2376-3-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-2-0x00007FFBA0EA0000-0x00007FFBA1841000-memory.dmp

Filesize
9.6MB

Download
memory/2376-1-0x000000001BC90000-0x000000001BD36000-memory.dmp

Filesize
664KB

Download