Malware Analysis Report

2024-11-30 23:19

Sample ID 220412-h7j5rabge3
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 family

BlackNET

BlackNET Payload

Contains code to disable Windows Defender

Adds Run key to start application

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-04-12 07:22

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

2022-04-12 07:22

Reported

2022-04-12 08:09

Platform

win7-20220331-en

Max time kernel

17s

Max time network

145s

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-1-5-21-3422572840-2899912402-917774768-1000\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
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
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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
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

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/1100-54-0x000007FEF2C30000-0x000007FEF3CC6000-memory.dmp

memory/1100-55-0x0000000001FE0000-0x0000000001FE2000-memory.dmp

memory/1100-56-0x0000000001FE6000-0x0000000002005000-memory.dmp

memory/1100-59-0x0000000002021000-0x0000000002023000-memory.dmp

memory/1100-61-0x0000000002025000-0x0000000002027000-memory.dmp

memory/1100-63-0x0000000002029000-0x000000000202B000-memory.dmp

memory/1100-62-0x0000000002027000-0x0000000002029000-memory.dmp

memory/1100-60-0x0000000002023000-0x0000000002025000-memory.dmp

memory/1100-58-0x000000000201F000-0x0000000002021000-memory.dmp

memory/1100-57-0x000000000201D000-0x000000000201F000-memory.dmp

memory/1808-64-0x0000000000000000-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/1808-68-0x0000000000C00000-0x0000000000C02000-memory.dmp

memory/1808-67-0x000007FEF2C30000-0x000007FEF3CC6000-memory.dmp

memory/1808-69-0x0000000000C06000-0x0000000000C25000-memory.dmp

memory/1808-70-0x0000000000C3D000-0x0000000000C3F000-memory.dmp

memory/1808-71-0x0000000000C2F000-0x0000000000C35000-memory.dmp

memory/1808-72-0x0000000000C3F000-0x0000000000C41000-memory.dmp

memory/1808-73-0x0000000000C41000-0x0000000000C43000-memory.dmp

memory/1808-74-0x0000000000C43000-0x0000000000C45000-memory.dmp

memory/1808-76-0x0000000000C47000-0x0000000000C49000-memory.dmp

memory/1808-75-0x0000000000C45000-0x0000000000C47000-memory.dmp

memory/1808-78-0x0000000000C4B000-0x0000000000C4D000-memory.dmp

memory/1808-77-0x0000000000C49000-0x0000000000C4B000-memory.dmp

memory/1808-79-0x0000000000C4D000-0x0000000000C4F000-memory.dmp

memory/1808-81-0x0000000000C53000-0x0000000000C57000-memory.dmp

memory/1808-82-0x0000000000C3C000-0x0000000000C40000-memory.dmp

memory/1808-80-0x0000000000C4F000-0x0000000000C53000-memory.dmp

memory/1808-83-0x0000000000C30000-0x0000000000C32000-memory.dmp

memory/1808-84-0x0000000000C39000-0x0000000000C3E000-memory.dmp

memory/1808-85-0x0000000000C40000-0x0000000000C43000-memory.dmp

memory/1808-86-0x0000000000C57000-0x0000000000C59000-memory.dmp

memory/1808-87-0x0000000000C5B000-0x0000000000C5D000-memory.dmp

memory/1808-88-0x0000000000C5D000-0x0000000000C5F000-memory.dmp

memory/1808-89-0x0000000000C5F000-0x0000000000C61000-memory.dmp

memory/1808-90-0x0000000000C36000-0x0000000000C38000-memory.dmp

memory/1808-91-0x0000000000C4B000-0x0000000000C4E000-memory.dmp

memory/2040-92-0x0000000000000000-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/2040-95-0x000007FEF2C30000-0x000007FEF3CC6000-memory.dmp

memory/2040-96-0x0000000000AD0000-0x0000000000AD2000-memory.dmp

memory/2040-97-0x0000000000AD6000-0x0000000000AF5000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-12 07:22

Reported

2022-04-12 08:09

Platform

win10v2004-20220331-en

Max time kernel

135s

Max time network

153s

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
FI 62.115.252.112:80 tcp
IE 20.54.89.106:443 tcp
US 20.189.173.11:443 tcp
IE 20.54.89.106:443 tcp
SE 178.79.212.129:80 tcp
SE 178.79.212.129:80 tcp
SE 178.79.212.129:80 tcp
IE 20.54.89.106:443 tcp
US 8.8.8.8:53 crl4.digicert.com udp
US 93.184.220.29:80 crl4.digicert.com tcp
IE 20.54.89.106:443 tcp
IE 20.54.89.106:443 tcp
IE 20.54.89.106:443 tcp

Files

memory/4636-124-0x0000000000000000-mapping.dmp