blacknet | d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb

Analysis

max time kernel
11s
max time network
149s
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 03:39

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General

Target

d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
Size

70KB
MD5

5988d7b07aa7c5c36dc0420a313bfb50
SHA1

d9f9b25cde6904c0daa6a7461973cee950c1af6e
SHA256

d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb
SHA512

62f2fbfa860071d6839d207bc49338ed5e74e7e99cfe372c416ab7f69045529f7a9c4c8f0adf099969c59b71ab869d8145ee53307131fe52faafaaf03048b8fe
SSDEEP

1536:gFTnqpKxynVhGeifCSzTPb542HkLbvJfxa:gFTAGeifrvb59H+bvJ5a

Score

10^/10

blacknet 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/0x0008000000023baf-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/0x0008000000023baf-20.dat	disable_win_def

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:

d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe

Executes dropped EXE 1 IoCs

Processes:

WindowsUpdate.exe

pid	Process
2508	WindowsUpdate.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

WindowsUpdate.exed418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2965b7eabf9eb6ce83de7d2260ab71ba = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe"	WindowsUpdate.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2965b7eabf9eb6ce83de7d2260ab71ba = "C:\\Users\\Admin\\AppData\\Local\\Temp\\d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe"	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2965b7eabf9eb6ce83de7d2260ab71ba = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe"	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.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:

d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exeWindowsUpdate.exe

pid	Process
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe
2508	WindowsUpdate.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exeWindowsUpdate.exe

description	pid	Process
Token: SeDebugPrivilege	4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
Token: SeDebugPrivilege	2508	WindowsUpdate.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe

description	pid	Process	procid_target
PID 4772 wrote to memory of 2508	4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe	91
PID 4772 wrote to memory of 2508	4772	d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe	91

C:\Users\Admin\AppData\Local\Temp\d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe
"C:\Users\Admin\AppData\Local\Temp\d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4772
- C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe
  "C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2508

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
70KB

MD5
5988d7b07aa7c5c36dc0420a313bfb50

SHA1
d9f9b25cde6904c0daa6a7461973cee950c1af6e

SHA256
d418fb498d89dfecd659adf5c5b6c7531c7b53331b37a420820b0236e1f86afb

SHA512
62f2fbfa860071d6839d207bc49338ed5e74e7e99cfe372c416ab7f69045529f7a9c4c8f0adf099969c59b71ab869d8145ee53307131fe52faafaaf03048b8fe

Download Submit
memory/2508-45-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-48-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-44-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-49-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-43-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-47-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-46-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-40-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-50-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-51-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-32-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-42-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-41-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-38-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-37-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-52-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/2508-33-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/4772-9-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/4772-10-0x000000001D7A0000-0x000000001D802000-memory.dmp

Filesize
392KB

Download
memory/4772-27-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/4772-35-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/4772-36-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/4772-17-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/4772-16-0x00007FFF35295000-0x00007FFF35296000-memory.dmp

Filesize
4KB

Download
memory/4772-39-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/4772-15-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/4772-14-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/4772-13-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/4772-31-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/4772-0-0x00007FFF35295000-0x00007FFF35296000-memory.dmp

Filesize
4KB

Download
memory/4772-8-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/4772-7-0x000000001C6E0000-0x000000001C72C000-memory.dmp

Filesize
304KB

Download
memory/4772-6-0x000000001BA70000-0x000000001BA78000-memory.dmp

Filesize
32KB

Download
memory/4772-5-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/4772-4-0x000000001C580000-0x000000001C61C000-memory.dmp

Filesize
624KB

Download
memory/4772-3-0x000000001BFA0000-0x000000001C46E000-memory.dmp

Filesize
4.8MB

Download
memory/4772-2-0x00007FFF34FE0000-0x00007FFF35981000-memory.dmp

Filesize
9.6MB

Download
memory/4772-1-0x000000001B990000-0x000000001BA36000-memory.dmp

Filesize
664KB

Download