blacknet | 09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146

Analysis

max time kernel
120s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-10-2024 16:37

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General

Target

09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
Size

80KB
MD5

96f963d603c7ea5c02cf288710dcd9a0
SHA1

da114471bc5452a6bebd3877226f3a299964f717
SHA256

09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146
SHA512

23c8e804a063b49b2f047013b89c65676272ba68e3f9299f338276614a7200de472baafb05df9a3ee3d3b00d8b426d646c99a6c78d1ee226f80c48cdc0060c66
SSDEEP

1536:dPvK/3zvzVQtCsscKvW+jzJxuOmb54vHTL6lm:diqCsp4zVmb5uHv6lm

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/0x000d000000023b06-20.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.

resource	yara_rule
behavioral2/files/0x000d000000023b06-20.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

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe

Executes dropped EXE 1 IoCs

pid	Process
1836	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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cde2f914e4cce7f13b2c1cec7b6da970 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe"	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.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
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
1600	powershell.exe
2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
1600	powershell.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe
1836	WindowsUpdate.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
Token: SeDebugPrivilege	1600	powershell.exe
Token: SeDebugPrivilege	1836	WindowsUpdate.exe
Token: SeDebugPrivilege	3984	powershell.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 1600	2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe	91
PID 2228 wrote to memory of 1600	2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe	91
PID 2228 wrote to memory of 1836	2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe	93
PID 2228 wrote to memory of 1836	2228	09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe	93
PID 1836 wrote to memory of 3984	1836	WindowsUpdate.exe	95
PID 1836 wrote to memory of 3984	1836	WindowsUpdate.exe	95

C:\Users\Admin\AppData\Local\Temp\09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.exe
"C:\Users\Admin\AppData\Local\Temp\09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146N.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:2228
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Get-MpPreference -verbose
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1600
- 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:1836
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-MpPreference -verbose
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:3984

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
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
80KB

MD5
96f963d603c7ea5c02cf288710dcd9a0

SHA1
da114471bc5452a6bebd3877226f3a299964f717

SHA256
09bd1c367f2f75a5e8dbdd8ad4d26e5ac99727ba1230ea1e91171c5cce042146

SHA512
23c8e804a063b49b2f047013b89c65676272ba68e3f9299f338276614a7200de472baafb05df9a3ee3d3b00d8b426d646c99a6c78d1ee226f80c48cdc0060c66

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_d4ayncee.rhx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1600-42-0x0000021F1EB90000-0x0000021F1EBB2000-memory.dmp

Filesize
136KB

Download
memory/1836-63-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/1836-62-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/1836-61-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/1836-36-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/1836-34-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/1836-32-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/2228-7-0x000000001C2A0000-0x000000001C2EC000-memory.dmp

Filesize
304KB

Download
memory/2228-9-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/2228-16-0x00007FF897CA5000-0x00007FF897CA6000-memory.dmp

Filesize
4KB

Download
memory/2228-13-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/2228-17-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/2228-15-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/2228-27-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/2228-31-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/2228-10-0x000000001F550000-0x000000001F5B2000-memory.dmp

Filesize
392KB

Download
memory/2228-14-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/2228-35-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/2228-8-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/2228-0-0x00007FF897CA5000-0x00007FF897CA6000-memory.dmp

Filesize
4KB

Download
memory/2228-6-0x0000000000FD0000-0x0000000000FD8000-memory.dmp

Filesize
32KB

Download
memory/2228-5-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/2228-4-0x000000001C140000-0x000000001C1DC000-memory.dmp

Filesize
624KB

Download
memory/2228-3-0x000000001BBB0000-0x000000001C07E000-memory.dmp

Filesize
4.8MB

Download
memory/2228-2-0x00007FF8979F0000-0x00007FF898391000-memory.dmp

Filesize
9.6MB

Download
memory/2228-1-0x000000001B630000-0x000000001B6D6000-memory.dmp

Filesize
664KB

Download