Malware Analysis Report

2024-11-30 23:20

Sample ID 220411-bp25aafbal
Target b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe
SHA256 b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09
Tags
hacked blacknet persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09

Threat Level: Known bad

The file b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe was found to be: Known bad.

Malicious Activity Summary

hacked blacknet persistence trojan

BlackNET Payload

Contains code to disable Windows Defender

BlackNET

Blacknet family

Adds Run key to start application

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-04-11 01:20

Signatures

BlackNET Payload

Description Indicator Process Target
N/A N/A N/A N/A

Blacknet family

blacknet

Contains code to disable Windows Defender

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-04-11 01:20

Reported

2022-04-11 01:40

Platform

win7-20220311-en

Max time kernel

4294072s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe"

Signatures

BlackNET

trojan blacknet

BlackNET Payload

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Contains code to disable Windows Defender

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows\CurrentVersion\Run\df7427b5e05183e625345c3c37ef31c0 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe" C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
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N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
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N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe

"C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe"

C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe"

C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe

"C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 finalb.xyz udp

Files

memory/912-54-0x000007FEEF150000-0x000007FEF01E6000-memory.dmp

memory/912-55-0x0000000000B40000-0x0000000000B42000-memory.dmp

memory/912-56-0x0000000000B46000-0x0000000000B65000-memory.dmp

memory/912-57-0x0000000000B7C000-0x0000000000B7E000-memory.dmp

memory/912-58-0x0000000000B73000-0x0000000000B79000-memory.dmp

memory/912-59-0x0000000000B89000-0x0000000000B8B000-memory.dmp

memory/912-60-0x0000000000B8B000-0x0000000000B8D000-memory.dmp

memory/912-61-0x0000000000B6D000-0x0000000000B6F000-memory.dmp

memory/912-62-0x0000000000B7E000-0x0000000000B80000-memory.dmp

memory/912-63-0x0000000000B6B000-0x0000000000B6D000-memory.dmp

memory/912-64-0x0000000000B81000-0x0000000000B85000-memory.dmp

memory/912-65-0x0000000000B6F000-0x0000000000B75000-memory.dmp

memory/912-66-0x0000000000B85000-0x0000000000B87000-memory.dmp

memory/912-67-0x0000000000B87000-0x0000000000B89000-memory.dmp

memory/912-68-0x0000000000B81000-0x0000000000B86000-memory.dmp

memory/912-69-0x0000000000B8D000-0x0000000000B91000-memory.dmp

memory/912-70-0x0000000000B7C000-0x0000000000B7F000-memory.dmp

memory/912-71-0x0000000000B72000-0x0000000000B77000-memory.dmp

memory/1656-72-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe

MD5 c4f79edc4498c5570495bb36fc942134
SHA1 00046b588252502480e8e708a22d25ae1d9b05fa
SHA256 b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09
SHA512 07bdeb39b35835a752886c2d308a68d263b36e8372d2bf320ede5b85252d14e284985d0889dfa9fcffec7ede7c3585a46cb0165b00be903755ffe63cacb21cef

C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\WindowsUpdate.exe

MD5 c4f79edc4498c5570495bb36fc942134
SHA1 00046b588252502480e8e708a22d25ae1d9b05fa
SHA256 b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09
SHA512 07bdeb39b35835a752886c2d308a68d263b36e8372d2bf320ede5b85252d14e284985d0889dfa9fcffec7ede7c3585a46cb0165b00be903755ffe63cacb21cef

memory/1656-75-0x000007FEEF150000-0x000007FEF01E6000-memory.dmp

memory/1656-76-0x0000000000C10000-0x0000000000C12000-memory.dmp

memory/1656-77-0x0000000000C16000-0x0000000000C35000-memory.dmp

memory/1656-79-0x0000000000C75000-0x0000000000C7C000-memory.dmp

memory/1656-78-0x0000000000C4C000-0x0000000000C4E000-memory.dmp

memory/1656-82-0x0000000000C51000-0x0000000000C53000-memory.dmp

memory/1656-81-0x0000000000C5D000-0x0000000000C6C000-memory.dmp

memory/1656-83-0x0000000000C53000-0x0000000000C55000-memory.dmp

memory/1656-91-0x0000000000C65000-0x0000000000C69000-memory.dmp

memory/1656-93-0x0000000000C6D000-0x0000000000C71000-memory.dmp

memory/1656-92-0x0000000000C69000-0x0000000000C6D000-memory.dmp

memory/1656-89-0x0000000000C5D000-0x0000000000C61000-memory.dmp

memory/1656-90-0x0000000000C61000-0x0000000000C65000-memory.dmp

memory/1656-88-0x0000000000C5B000-0x0000000000C5D000-memory.dmp

memory/1656-87-0x0000000000C59000-0x0000000000C5B000-memory.dmp

memory/1656-94-0x0000000000C71000-0x0000000000C75000-memory.dmp

memory/1656-95-0x0000000000C75000-0x0000000000C79000-memory.dmp

memory/1656-86-0x0000000000C3B000-0x0000000000C49000-memory.dmp

memory/1656-85-0x0000000000C57000-0x0000000000C59000-memory.dmp

memory/1656-84-0x0000000000C55000-0x0000000000C57000-memory.dmp

memory/1656-80-0x0000000000C4E000-0x0000000000C50000-memory.dmp

memory/1656-97-0x0000000000C4A000-0x0000000000C4F000-memory.dmp

memory/1656-96-0x0000000000C79000-0x0000000000C7D000-memory.dmp

memory/1656-98-0x0000000000C51000-0x0000000000C58000-memory.dmp

memory/1656-99-0x0000000000C55000-0x0000000000C58000-memory.dmp

memory/2036-100-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe

MD5 89dd6e72358a669b7d6e2348307a7af7
SHA1 0db348f3c6114a45d71f4d218e0e088b71c7bb0a
SHA256 ad34794058212006ae974fcc6a0242598e6d020f08044439e3512773cd402b7e
SHA512 93b8a47686d7491281a0809b138a6244a535302ba0d6b2146849e9888632c72b6223ae8eb7a24f1006aaf57ab947a8f43719cff4837df559e7bf42f52c63856b

C:\Users\Admin\AppData\Roaming\Microsoft\MyClient\svchosts.exe

MD5 89dd6e72358a669b7d6e2348307a7af7
SHA1 0db348f3c6114a45d71f4d218e0e088b71c7bb0a
SHA256 ad34794058212006ae974fcc6a0242598e6d020f08044439e3512773cd402b7e
SHA512 93b8a47686d7491281a0809b138a6244a535302ba0d6b2146849e9888632c72b6223ae8eb7a24f1006aaf57ab947a8f43719cff4837df559e7bf42f52c63856b

memory/2036-104-0x0000000000100000-0x0000000000102000-memory.dmp

memory/2036-103-0x000007FEEF150000-0x000007FEF01E6000-memory.dmp

memory/2036-105-0x0000000000106000-0x0000000000125000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-11 01:20

Reported

2022-04-11 01:37

Platform

win10v2004-20220331-en

Max time kernel

110s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe

"C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe"

C:\Windows\system32\fondue.exe

"C:\Windows\system32\fondue.exe" /enable-feature:NetFx3 /caller-name:mscoreei.dll

Network

Country Destination Domain Proto
IE 20.54.89.15:443 tcp
IE 20.50.73.10:443 tcp
SE 178.79.212.129:80 tcp
SE 178.79.212.129:80 tcp
FI 62.115.252.112:80 tcp
US 8.8.8.8:53 15.89.54.20.in-addr.arpa udp
US 204.79.197.203:80 tcp
US 8.8.8.8:53 d.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.0.0.5.0.8.0.0.3.0.1.3.0.6.2.ip6.arpa udp

Files

memory/5036-124-0x0000000000000000-mapping.dmp