blacknet | 12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999

Analysis

max time kernel
5s
max time network
119s
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 13:27

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
Size

70KB
MD5

a8d6eb2635a1516ba319e4a53166e040
SHA1

35bd2de84cfa50536483824057a6d801fb7be4c8
SHA256

12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999
SHA512

c76fba65cbd14604249c25343925bf267bae474beb8ab511b70714f332b766dfcafcfa5ef6d3910d7544514c1392049966ccd41686a6abf1b2a5e5f87ada0c59
SSDEEP

1536:gFTnqpKxynVcGeifCSzTPb542HkLbvJfxa:gFTxGeifrvb59H+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
C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe	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
C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe	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:

12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe

Executes dropped EXE 1 IoCs

Processes:

WindowsUpdate.exe

pid process

4852 WindowsUpdate.exe

pid	process
4852	WindowsUpdate.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2965b7eabf9eb6ce83de7d2260ab71ba = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe"	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2965b7eabf9eb6ce83de7d2260ab71ba = "C:\\Users\\Admin\\AppData\\Local\\Temp\\12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe"	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 29 IoCs

Processes:

12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe

pid	process
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe

description pid process

Token: SeDebugPrivilege 4132 12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe

description	pid	process
Token: SeDebugPrivilege	4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe

description	pid	process	target process
PID 4132 wrote to memory of 4852	4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe	WindowsUpdate.exe
PID 4132 wrote to memory of 4852	4132	12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe	WindowsUpdate.exe

C:\Users\Admin\AppData\Local\Temp\12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe
"C:\Users\Admin\AppData\Local\Temp\12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4132
- C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe
  "C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"
  2⤵
  - Executes dropped EXE
  PID:4852

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
70KB

MD5
a8d6eb2635a1516ba319e4a53166e040

SHA1
35bd2de84cfa50536483824057a6d801fb7be4c8

SHA256
12314f19fcc7ba70f1260027372116606d111778c5c9766c78b7701e26278999

SHA512
c76fba65cbd14604249c25343925bf267bae474beb8ab511b70714f332b766dfcafcfa5ef6d3910d7544514c1392049966ccd41686a6abf1b2a5e5f87ada0c59

Download Submit
memory/4132-8-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4132-3-0x000000001B760000-0x000000001BC2E000-memory.dmp

Filesize
4.8MB

Download
memory/4132-10-0x000000001C8F0000-0x000000001C952000-memory.dmp

Filesize
392KB

Download
memory/4132-13-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4132-5-0x000000001BD10000-0x000000001BDAC000-memory.dmp

Filesize
624KB

Download
memory/4132-6-0x0000000000BD0000-0x0000000000BD8000-memory.dmp

Filesize
32KB

Download
memory/4132-7-0x000000001BE70000-0x000000001BEBC000-memory.dmp

Filesize
304KB

Download
memory/4132-32-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4132-31-0x00007FFD8DBD5000-0x00007FFD8DBD6000-memory.dmp

Filesize
4KB

Download
memory/4132-2-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4132-4-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4132-14-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4132-1-0x000000001B1E0000-0x000000001B286000-memory.dmp

Filesize
664KB

Download
memory/4132-24-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4132-0-0x00007FFD8DBD5000-0x00007FFD8DBD6000-memory.dmp

Filesize
4KB

Download
memory/4132-36-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4132-34-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4132-9-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-35-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-46-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-29-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-28-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-37-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-38-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-40-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-39-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-41-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-42-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-43-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-44-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-45-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-30-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-47-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-48-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-50-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-49-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-51-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-52-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-53-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-54-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-55-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-56-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download
memory/4852-57-0x00007FFD8D920000-0x00007FFD8E2C1000-memory.dmp

Filesize
9.6MB

Download