blacknet | 9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26f

General

Target

9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
Size

70KB
MD5

43d195e96137f7759184abc46a7ce580
SHA1

2f8e2f9a5ee4899ffe01cc2fe577716811bcbd48
SHA256

9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26f
SHA512

68b67aad725ee5a5aa50a6c5f3847891b44408462988399aa328b779734318def8dc0807b5f00f3b96c59ca1f26273e154e3c328b3339b5f0cbcc5d3bd7f8676
SSDEEP

1536:gFTnqpKxynV9GeifCSzTPb542HkLbvJfxa:gFT4Geifrvb59H+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

Blacknet 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:

9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe

Executes dropped EXE 1 IoCs

Processes:

WindowsUpdate.exe

pid process

2340 WindowsUpdate.exe

pid	process
2340	WindowsUpdate.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exeWindowsUpdate.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2965b7eabf9eb6ce83de7d2260ab71ba = "C:\\Users\\Admin\\AppData\\Local\\Temp\\9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe"	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2965b7eabf9eb6ce83de7d2260ab71ba = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe"	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2965b7eabf9eb6ce83de7d2260ab71ba = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe"	WindowsUpdate.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 57 IoCs

Processes:

9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exeWindowsUpdate.exe

pid	process
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe
2340	WindowsUpdate.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exeWindowsUpdate.exe

description	pid	process
Token: SeDebugPrivilege	5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
Token: SeDebugPrivilege	2340	WindowsUpdate.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe

description	pid	process	target process
PID 5008 wrote to memory of 2340	5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe	WindowsUpdate.exe
PID 5008 wrote to memory of 2340	5008	9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe	WindowsUpdate.exe

C:\Users\Admin\AppData\Local\Temp\9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe
"C:\Users\Admin\AppData\Local\Temp\9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26fN.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5008

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:2340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
70KB

MD5
43d195e96137f7759184abc46a7ce580

SHA1
2f8e2f9a5ee4899ffe01cc2fe577716811bcbd48

SHA256
9442f09ae4d5f97ae848688a05639627c517eef4a17c7b2d202e51b1d081d26f

SHA512
68b67aad725ee5a5aa50a6c5f3847891b44408462988399aa328b779734318def8dc0807b5f00f3b96c59ca1f26273e154e3c328b3339b5f0cbcc5d3bd7f8676

Download Submit
memory/2340-41-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-42-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-46-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-45-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-40-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-44-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-47-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-31-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-43-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-39-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-38-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-37-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-36-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-48-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-32-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/2340-30-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/5008-8-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/5008-9-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/5008-28-0x00007FF9D5CD5000-0x00007FF9D5CD6000-memory.dmp

Filesize
4KB

Download
memory/5008-33-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/5008-35-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/5008-15-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/5008-14-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/5008-13-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/5008-10-0x000000001F2F0000-0x000000001F352000-memory.dmp

Filesize
392KB

Download
memory/5008-29-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/5008-0-0x00007FF9D5CD5000-0x00007FF9D5CD6000-memory.dmp

Filesize
4KB

Download
memory/5008-7-0x000000001C140000-0x000000001C18C000-memory.dmp

Filesize
304KB

Download
memory/5008-6-0x0000000000E40000-0x0000000000E48000-memory.dmp

Filesize
32KB

Download
memory/5008-5-0x000000001C070000-0x000000001C10C000-memory.dmp

Filesize
624KB

Download
memory/5008-4-0x000000001BB00000-0x000000001BFCE000-memory.dmp

Filesize
4.8MB

Download
memory/5008-3-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/5008-2-0x00007FF9D5A20000-0x00007FF9D63C1000-memory.dmp

Filesize
9.6MB

Download
memory/5008-1-0x000000001B460000-0x000000001B506000-memory.dmp

Filesize
664KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads