blacknet | 2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a

Analysis

max time kernel
17s
max time network
142s
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 20:09

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General

Target

2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
Size

70KB
MD5

01d7830e26b551e33a0a017ea895d2a1
SHA1

4be2b4811eb3782f0ab259c35bd5b02bc7bc3fd8
SHA256

2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a
SHA512

5668536c6009b4485dfb40da2ef2a4e985b840ae92c1b5079ad1f8e9dae12a3477da2a1eb16fd3ad81aa46ba68998cdc5473d200a0dccf98c19c7f7e6af1051b
SSDEEP

1536:gFTnqpKxynVEGeifCSzTPb542HkLbvJfxa: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

resource	yara_rule
behavioral2/files/0x000d000000023b3d-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.

resource	yara_rule
behavioral2/files/0x000d000000023b3d-19.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe

Executes dropped EXE 1 IoCs

pid	Process
1640	WindowsUpdate.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

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\\2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe"	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.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"	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.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"	WindowsUpdate.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 58 IoCs

pid	Process
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe
1640	WindowsUpdate.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
Token: SeDebugPrivilege	1640	WindowsUpdate.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3604 wrote to memory of 1640	3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe	90
PID 3604 wrote to memory of 1640	3604	2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe	90

C:\Users\Admin\AppData\Local\Temp\2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe
"C:\Users\Admin\AppData\Local\Temp\2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3604
- 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:1640

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

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Downloads

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

Filesize
70KB

MD5
01d7830e26b551e33a0a017ea895d2a1

SHA1
4be2b4811eb3782f0ab259c35bd5b02bc7bc3fd8

SHA256
2d84a0b2949f5bc68bcf73f1a38fc021a359036c65ea083e87e5cb395cff969a

SHA512
5668536c6009b4485dfb40da2ef2a4e985b840ae92c1b5079ad1f8e9dae12a3477da2a1eb16fd3ad81aa46ba68998cdc5473d200a0dccf98c19c7f7e6af1051b

Download Submit
memory/1640-43-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-44-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-54-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-53-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-52-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-51-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-32-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-50-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-33-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-49-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-47-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-46-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-45-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-42-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-41-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-40-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-39-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-34-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-38-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/1640-48-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/3604-7-0x000000001BE50000-0x000000001BE9C000-memory.dmp

Filesize
304KB

Download
memory/3604-5-0x000000001BCB0000-0x000000001BD4C000-memory.dmp

Filesize
624KB

Download
memory/3604-12-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/3604-15-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/3604-28-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/3604-26-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/3604-1-0x000000001B0D0000-0x000000001B176000-memory.dmp

Filesize
664KB

Download
memory/3604-31-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/3604-3-0x000000001B740000-0x000000001BC0E000-memory.dmp

Filesize
4.8MB

Download
memory/3604-0-0x00007FFDF7825000-0x00007FFDF7826000-memory.dmp

Filesize
4KB

Download
memory/3604-16-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/3604-36-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/3604-11-0x00007FFDF7825000-0x00007FFDF7826000-memory.dmp

Filesize
4KB

Download
memory/3604-10-0x000000001CAC0000-0x000000001CB22000-memory.dmp

Filesize
392KB

Download
memory/3604-9-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/3604-8-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/3604-6-0x000000001B190000-0x000000001B198000-memory.dmp

Filesize
32KB

Download
memory/3604-37-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/3604-4-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download
memory/3604-2-0x00007FFDF7570000-0x00007FFDF7F11000-memory.dmp

Filesize
9.6MB

Download