blacknet | 2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96

Analysis

max time kernel
120s
max time network
114s
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 21:57

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General

Target

2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
Size

80KB
MD5

9ef47661f2f57c31f5bf89ac0356e1f0
SHA1

38fa6e73917da5bfcae120faede519a310d3b48b
SHA256

2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96
SHA512

80b95261a5614b46203b745fba9bcd08f4395980aadd9594d5ec5f4f588066e14a8ef7646e5cda738ea9c000a64610b3d83667ba122a686f0c7f16337cbd6ebe
SSDEEP

1536:dPvK/3zvzVQtCsscKvWljzJxuOmb54vHTL6lm:diqCsp1zVmb5uHv6lm

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/0x0031000000023b81-19.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.

Processes:

resource	yara_rule
behavioral2/files/0x0031000000023b81-19.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

Processes:

2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.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:

2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe

Executes dropped EXE 1 IoCs

Processes:

WindowsUpdate.exe

pid	Process
3388	WindowsUpdate.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cde2f914e4cce7f13b2c1cec7b6da970 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe"	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.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:

2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exepowershell.exeWindowsUpdate.exepowershell.exe

pid	Process
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
4540	powershell.exe
4540	powershell.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
3388	WindowsUpdate.exe
4064	powershell.exe
3388	WindowsUpdate.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exepowershell.exeWindowsUpdate.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
Token: SeDebugPrivilege	4540	powershell.exe
Token: SeDebugPrivilege	3388	WindowsUpdate.exe
Token: SeDebugPrivilege	4064	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exeWindowsUpdate.exe

description	pid	Process	procid_target
PID 4472 wrote to memory of 4540	4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe	90
PID 4472 wrote to memory of 4540	4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe	90
PID 4472 wrote to memory of 3388	4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe	92
PID 4472 wrote to memory of 3388	4472	2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe	92
PID 3388 wrote to memory of 4064	3388	WindowsUpdate.exe	95
PID 3388 wrote to memory of 4064	3388	WindowsUpdate.exe	95

C:\Users\Admin\AppData\Local\Temp\2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.exe
"C:\Users\Admin\AppData\Local\Temp\2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96N.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:4472
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Get-MpPreference -verbose
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4540
- 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:3388
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-MpPreference -verbose
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4064

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
2979eabc783eaca50de7be23dd4eafcf

SHA1
d709ce5f3a06b7958a67e20870bfd95b83cad2ea

SHA256
006cca90e78fbb571532a83082ac6712721a34ea4b21f490058ffb3f521f4903

SHA512
92bc433990572d9427d0c93eef9bd1cc23fa00ed60dd0c9c983d87d3421e02ce3f156c6f88fe916ef6782dbf185cbce083bc0094f8c527f302be6a37d1c53aba

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

Filesize
80KB

MD5
9ef47661f2f57c31f5bf89ac0356e1f0

SHA1
38fa6e73917da5bfcae120faede519a310d3b48b

SHA256
2e8deb2e81589b0a6550efc54a14a6b8d8a374239dbaa5c51c4feafd7613bb96

SHA512
80b95261a5614b46203b745fba9bcd08f4395980aadd9594d5ec5f4f588066e14a8ef7646e5cda738ea9c000a64610b3d83667ba122a686f0c7f16337cbd6ebe

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1hnehqo4.hsb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3388-61-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/3388-62-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/3388-60-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/3388-35-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/3388-34-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/3388-33-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/4472-7-0x000000001C550000-0x000000001C59C000-memory.dmp

Filesize
304KB

Download
memory/4472-9-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/4472-14-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/4472-15-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/4472-16-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/4472-10-0x000000001D010000-0x000000001D072000-memory.dmp

Filesize
392KB

Download
memory/4472-27-0x00007FFF3DFB5000-0x00007FFF3DFB6000-memory.dmp

Filesize
4KB

Download
memory/4472-32-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/4472-31-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/4472-13-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/4472-8-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/4472-0-0x00007FFF3DFB5000-0x00007FFF3DFB6000-memory.dmp

Filesize
4KB

Download
memory/4472-6-0x0000000001390000-0x0000000001398000-memory.dmp

Filesize
32KB

Download
memory/4472-1-0x000000001B8D0000-0x000000001B976000-memory.dmp

Filesize
664KB

Download
memory/4472-5-0x000000001C3F0000-0x000000001C48C000-memory.dmp

Filesize
624KB

Download
memory/4472-4-0x000000001BE50000-0x000000001C31E000-memory.dmp

Filesize
4.8MB

Download
memory/4472-3-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/4472-2-0x00007FFF3DD00000-0x00007FFF3E6A1000-memory.dmp

Filesize
9.6MB

Download
memory/4540-36-0x0000023583470000-0x0000023583492000-memory.dmp

Filesize
136KB

Download