Malware Analysis Report

2024-11-30 23:20

Sample ID 220411-h567habfcm
Target b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe
SHA256 b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09
Tags
blacknet hacked 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

blacknet hacked persistence trojan

Blacknet family

Contains code to disable Windows Defender

BlackNET Payload

BlackNET

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

2022-04-11 07:20

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 07:20

Reported

2022-04-11 07:39

Platform

win7-20220310-en

Max time kernel

4294079s

Max time network

153s

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-1-5-21-2932610838-281738825-1127631353-1000\Software\Microsoft\Windows\CurrentVersion\Run\df7427b5e05183e625345c3c37ef31c0 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe" C:\Users\Admin\AppData\Local\Temp\b33d569af5e490875d6473c6402797ddb4ce639bb1f1cf7f67698eeafa625f09.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2932610838-281738825-1127631353-1000\Software\Microsoft\Windows\CurrentVersion\Run\df7427b5e05183e625345c3c37ef31c0 = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\MyClient\\WindowsUpdate.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
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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/1268-54-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-55-0x000007FEEE0C0000-0x000007FEEF156000-memory.dmp

memory/1268-56-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-57-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-58-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-59-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-60-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-61-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-62-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-63-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-64-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-65-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-66-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-67-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-68-0x000000001E7E0000-0x000000001E7E9000-memory.dmp

memory/1268-69-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-70-0x000000001E7E9000-0x000000001E7F1000-memory.dmp

memory/1268-71-0x000000001E7F9000-0x000000001E801000-memory.dmp

memory/1268-72-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-73-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-74-0x000000001E7F1000-0x000000001E7F9000-memory.dmp

memory/1268-75-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-76-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-77-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-78-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-80-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-79-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-81-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-82-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1268-83-0x0000000000500000-0x0000000000580000-memory.dmp

memory/1732-84-0x0000000000000000-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/1732-87-0x000007FEEE0C0000-0x000007FEEF156000-memory.dmp

memory/1732-88-0x0000000000A10000-0x0000000000A12000-memory.dmp

memory/1732-89-0x0000000000A16000-0x0000000000A35000-memory.dmp

memory/1732-90-0x0000000000A4C000-0x0000000000A4E000-memory.dmp

memory/1732-91-0x0000000000A4E000-0x0000000000A50000-memory.dmp

memory/1732-92-0x0000000000A3B000-0x0000000000A3E000-memory.dmp

memory/1732-93-0x0000000000A47000-0x0000000000A4E000-memory.dmp

memory/1732-94-0x0000000000A3B000-0x0000000000A41000-memory.dmp

memory/1732-95-0x0000000000A3D000-0x0000000000A42000-memory.dmp

memory/1732-96-0x0000000000A40000-0x0000000000A44000-memory.dmp

memory/1732-97-0x0000000000A51000-0x0000000000A53000-memory.dmp

memory/1732-98-0x0000000000A53000-0x0000000000A55000-memory.dmp

memory/1732-99-0x0000000000A55000-0x0000000000A57000-memory.dmp

memory/1732-100-0x0000000000A57000-0x0000000000A59000-memory.dmp

memory/1732-101-0x0000000000A59000-0x0000000000A5B000-memory.dmp

memory/1732-102-0x0000000000A5B000-0x0000000000A5D000-memory.dmp

memory/1732-103-0x0000000000A5D000-0x0000000000A61000-memory.dmp

memory/1732-104-0x0000000000A4A000-0x0000000000A4F000-memory.dmp

memory/1732-105-0x0000000000A3C000-0x0000000000A47000-memory.dmp

memory/1732-106-0x0000000000A51000-0x0000000000A54000-memory.dmp

memory/1732-107-0x0000000000A3C000-0x0000000000A42000-memory.dmp

memory/892-108-0x0000000000000000-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/892-111-0x000007FEEE0C0000-0x000007FEEF156000-memory.dmp

memory/892-112-0x00000000009E0000-0x00000000009E2000-memory.dmp

memory/892-113-0x00000000009E6000-0x0000000000A05000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-11 07:20

Reported

2022-04-11 07:41

Platform

win10v2004-20220331-en

Max time kernel

110s

Max time network

151s

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
US 93.184.220.29:80 tcp
US 93.184.220.29:80 tcp
US 40.125.122.151:443 tcp
US 20.189.173.2:443 tcp
NL 20.190.160.7:443 tcp
FI 62.115.252.81:80 tcp
FI 62.115.252.81:80 tcp
FI 62.115.252.81:80 tcp
US 8.8.8.8:53 96.108.152.52.in-addr.arpa udp
US 131.253.33.203:80 tcp

Files

memory/4916-124-0x0000000000000000-mapping.dmp