blacknet | b30eebf734354f55373978e395c912393f3c674aaa4717748ae449b09832f6ae

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7v20210408
submitted
01-08-2021 10:01

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General

Target

B30EEBF734354F55373978E395C912393F3C674AAA471.exe
Size

117KB
MD5

b72d429d1d690165c7b0de4a074c4a58
SHA1

f0704d227482a80f2f90dab79ed4acd9770fe565
SHA256

b30eebf734354f55373978e395c912393f3c674aaa4717748ae449b09832f6ae
SHA512

f3b565e67d5a15d5305982701bd5f0d37eec0bfe2d152556584fa1d01faf1def6e616d0addea91e0663be084450b49f99e2108cc06a9b50c9e1482f9290b6c5c

Score

10^/10

blacknet bot evasion persistence trojan

Malware Config

Extracted

Family

blacknet

Version

v3.7.0 Public

Botnet

Bot

http://furyx.de/panel

Mutex

BN[c1916af6f3a468e5b6f5c7f6b9c78982]

Attributes

antivm
false
elevate_uac
false
install_name
WindowsUpdate.exe
splitter
|BN|
start_name
e162b1333458a713bc6916cc8ac4110c
startup
false
usb_spread
true

aes.plain

Signatures

BlackNET
BlackNET is an open source remote access tool written in VB.NET.
trojan blacknet

BlackNET Payload 2 IoCs

Processes:

resource	yara_rule
C:\Windows\Microsoft\MyClient\WindowsUpdate.exe	family_blacknet
C:\Windows\Microsoft\MyClient\WindowsUpdate.exe	family_blacknet

Contains code to disable Windows Defender 2 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

Processes:

resource	yara_rule
C:\Windows\Microsoft\MyClient\WindowsUpdate.exe	disable_win_def
C:\Windows\Microsoft\MyClient\WindowsUpdate.exe	disable_win_def

Modifies Windows Defender Real-time Protection settings 3 TTPs
evasion trojan

Modify Registry
T1112

Modify Existing Service
T1031

Disabling Security Tools
T1089
Executes dropped EXE 1 IoCs

Processes:

WindowsUpdate.exe

pid process

2008 WindowsUpdate.exe
Windows security modification 2 TTPs 1 IoCs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

B30EEBF734354F55373978E395C912393F3C674AAA471.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Features B30EEBF734354F55373978E395C912393F3C674AAA471.exe

pid	process
2008	WindowsUpdate.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Features	B30EEBF734354F55373978E395C912393F3C674AAA471.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

B30EEBF734354F55373978E395C912393F3C674AAA471.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\e162b1333458a713bc6916cc8ac4110c = "C:\\Windows\\Microsoft\\MyClient\\WindowsUpdate.exe"	B30EEBF734354F55373978E395C912393F3C674AAA471.exe

Drops file in Windows directory 2 IoCs

Processes:

B30EEBF734354F55373978E395C912393F3C674AAA471.exe

description	ioc	process
File created	C:\Windows\Microsoft\MyClient\WindowsUpdate.exe	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
File opened for modification	C:\Windows\Microsoft\MyClient\WindowsUpdate.exe	B30EEBF734354F55373978E395C912393F3C674AAA471.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1596 1948 WerFault.exe B30EEBF734354F55373978E395C912393F3C674AAA471.exe
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

916 schtasks.exe

pid	pid_target	process	target process
1596	1948	WerFault.exe	B30EEBF734354F55373978E395C912393F3C674AAA471.exe

pid	process
916	schtasks.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

B30EEBF734354F55373978E395C912393F3C674AAA471.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	B30EEBF734354F55373978E395C912393F3C674AAA471.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

B30EEBF734354F55373978E395C912393F3C674AAA471.exepowershell.exe

pid	process
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1760	powershell.exe
1760	powershell.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

1596 WerFault.exe

pid	process
1596	WerFault.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

B30EEBF734354F55373978E395C912393F3C674AAA471.exepowershell.exeWerFault.exeWindowsUpdate.exe

description	pid	process
Token: SeDebugPrivilege	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
Token: SeDebugPrivilege	1760	powershell.exe
Token: SeDebugPrivilege	1596	WerFault.exe
Token: SeDebugPrivilege	2008	WindowsUpdate.exe

Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

B30EEBF734354F55373978E395C912393F3C674AAA471.exeWindowsUpdate.exe

pid	process
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe
2008	WindowsUpdate.exe
2008	WindowsUpdate.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

B30EEBF734354F55373978E395C912393F3C674AAA471.exe

description	pid	process	target process
PID 1948 wrote to memory of 1760	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	powershell.exe
PID 1948 wrote to memory of 1760	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	powershell.exe
PID 1948 wrote to memory of 1760	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	powershell.exe
PID 1948 wrote to memory of 1516	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	schtasks.exe
PID 1948 wrote to memory of 1516	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	schtasks.exe
PID 1948 wrote to memory of 1516	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	schtasks.exe
PID 1948 wrote to memory of 1596	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	WerFault.exe
PID 1948 wrote to memory of 1596	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	WerFault.exe
PID 1948 wrote to memory of 1596	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	WerFault.exe
PID 1948 wrote to memory of 2008	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	WindowsUpdate.exe
PID 1948 wrote to memory of 2008	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	WindowsUpdate.exe
PID 1948 wrote to memory of 2008	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	WindowsUpdate.exe
PID 1948 wrote to memory of 916	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	schtasks.exe
PID 1948 wrote to memory of 916	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	schtasks.exe
PID 1948 wrote to memory of 916	1948	B30EEBF734354F55373978E395C912393F3C674AAA471.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\B30EEBF734354F55373978E395C912393F3C674AAA471.exe
"C:\Users\Admin\AppData\Local\Temp\B30EEBF734354F55373978E395C912393F3C674AAA471.exe"
1⤵
- Windows security modification
- Adds Run key to start application
- Drops file in Windows directory
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Get-MpPreference -verbose
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1760
- C:\Windows\system32\schtasks.exe
  "schtasks" /delete /tn "WindowsUpdate.exe" /f
  2⤵
  PID:1516
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1948 -s 2188
  2⤵
  - Program crash
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:1596
- C:\Windows\Microsoft\MyClient\WindowsUpdate.exe
  "C:\Windows\Microsoft\MyClient\WindowsUpdate.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2008
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "WindowsUpdate.exe" /sc ONLOGON /tr "C:\Windows\WindowsUpdate.exe" /rl HIGHEST /f
  2⤵
  - Creates scheduled task(s)
  PID:916

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Disabling Security Tools

T1089

Install Root Certificate

T1130

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Microsoft\MyClient\WindowsUpdate.exe

MD5
b72d429d1d690165c7b0de4a074c4a58

SHA1
f0704d227482a80f2f90dab79ed4acd9770fe565

SHA256
b30eebf734354f55373978e395c912393f3c674aaa4717748ae449b09832f6ae

SHA512
f3b565e67d5a15d5305982701bd5f0d37eec0bfe2d152556584fa1d01faf1def6e616d0addea91e0663be084450b49f99e2108cc06a9b50c9e1482f9290b6c5c

Download Submit
C:\Windows\Microsoft\MyClient\WindowsUpdate.exe

MD5
b72d429d1d690165c7b0de4a074c4a58

SHA1
f0704d227482a80f2f90dab79ed4acd9770fe565

SHA256
b30eebf734354f55373978e395c912393f3c674aaa4717748ae449b09832f6ae

SHA512
f3b565e67d5a15d5305982701bd5f0d37eec0bfe2d152556584fa1d01faf1def6e616d0addea91e0663be084450b49f99e2108cc06a9b50c9e1482f9290b6c5c

Download Submit
memory/916-108-0x0000000000000000-mapping.dmp

Download
memory/1516-91-0x0000000000000000-mapping.dmp

Download
memory/1596-112-0x0000000000210000-0x0000000000211000-memory.dmp

Filesize
4KB

Download
memory/1596-102-0x0000000000000000-mapping.dmp

Download
memory/1760-70-0x000000001AAB0000-0x000000001AAB2000-memory.dmp

Filesize
8KB

Download
memory/1760-68-0x000000001A780000-0x000000001A781000-memory.dmp

Filesize
4KB

Download
memory/1760-69-0x000000001AB30000-0x000000001AB31000-memory.dmp

Filesize
4KB

Download
memory/1760-71-0x000000001AAB4000-0x000000001AAB6000-memory.dmp

Filesize
8KB

Download
memory/1760-66-0x0000000000000000-mapping.dmp

Download
memory/1760-72-0x00000000026D0000-0x00000000026D1000-memory.dmp

Filesize
4KB

Download
memory/1760-73-0x0000000002630000-0x0000000002631000-memory.dmp

Filesize
4KB

Download
memory/1760-74-0x000000001B4E0000-0x000000001B4E1000-memory.dmp

Filesize
4KB

Download
memory/1760-77-0x000000001B6E0000-0x000000001B6E1000-memory.dmp

Filesize
4KB

Download
memory/1760-89-0x000000001B510000-0x000000001B511000-memory.dmp

Filesize
4KB

Download
memory/1760-90-0x000000001B5A0000-0x000000001B5A1000-memory.dmp

Filesize
4KB

Download
memory/1760-67-0x000007FEFB7B1000-0x000007FEFB7B3000-memory.dmp

Filesize
8KB

Download
memory/1948-96-0x000000001AD6C000-0x000000001AD6D000-memory.dmp

Filesize
4KB

Download
memory/1948-110-0x000000001AD72000-0x000000001AD73000-memory.dmp

Filesize
4KB

Download
memory/1948-94-0x000000001AD6A000-0x000000001AD6B000-memory.dmp

Filesize
4KB

Download
memory/1948-95-0x000000001AD6B000-0x000000001AD6C000-memory.dmp

Filesize
4KB

Download
memory/1948-97-0x000000001AD6D000-0x000000001AD6E000-memory.dmp

Filesize
4KB

Download
memory/1948-92-0x000000001AD68000-0x000000001AD69000-memory.dmp

Filesize
4KB

Download
memory/1948-98-0x000000001AD6E000-0x000000001AD6F000-memory.dmp

Filesize
4KB

Download
memory/1948-99-0x000000001AD6F000-0x000000001AD70000-memory.dmp

Filesize
4KB

Download
memory/1948-101-0x000000001AD71000-0x000000001AD72000-memory.dmp

Filesize
4KB

Download
memory/1948-100-0x000000001AD70000-0x000000001AD71000-memory.dmp

Filesize
4KB

Download
memory/1948-60-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/1948-62-0x000000001AD40000-0x000000001AD42000-memory.dmp

Filesize
8KB

Download
memory/1948-65-0x000000001AD49000-0x000000001AD68000-memory.dmp

Filesize
124KB

Download
memory/1948-64-0x000000001AD44000-0x000000001AD45000-memory.dmp

Filesize
4KB

Download
memory/1948-63-0x000000001AD42000-0x000000001AD43000-memory.dmp

Filesize
4KB

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memory/1948-111-0x000000001AD73000-0x000000001AD74000-memory.dmp

Filesize
4KB

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memory/1948-93-0x000000001AD69000-0x000000001AD6A000-memory.dmp

Filesize
4KB

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memory/2008-106-0x0000000000ED0000-0x0000000000ED1000-memory.dmp

Filesize
4KB

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memory/2008-103-0x0000000000000000-mapping.dmp

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memory/2008-113-0x000000001B350000-0x000000001B352000-memory.dmp

Filesize
8KB

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memory/2008-114-0x000000001B352000-0x000000001B353000-memory.dmp

Filesize
4KB

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memory/2008-115-0x000000001B354000-0x000000001B355000-memory.dmp

Filesize
4KB

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memory/2008-116-0x000000001B359000-0x000000001B378000-memory.dmp

Filesize
124KB

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