Malware Analysis Report

2024-11-30 23:22

Sample ID 220415-t5trysche5
Target 97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a
SHA256 97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a
Tags
blacknet trojan persistence
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

97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a

Threat Level: Known bad

The file 97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a was found to be: Known bad.

Malicious Activity Summary

blacknet trojan persistence

BlackNET

Executes dropped EXE

Checks computer location settings

Adds Run key to start application

Enumerates physical storage devices

Suspicious use of SetWindowsHookEx

Runs ping.exe

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-04-15 16:38

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-04-15 16:38

Reported

2022-04-15 18:41

Platform

win7-20220414-en

Max time kernel

44s

Max time network

49s

Command Line

"C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe"

Signatures

BlackNET

trojan blacknet

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe

"C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe"

Network

N/A

Files

memory/1668-54-0x000007FEF22D0000-0x000007FEF3366000-memory.dmp

memory/1668-55-0x0000000000B20000-0x0000000000B22000-memory.dmp

memory/1668-56-0x0000000000B26000-0x0000000000B45000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-04-15 16:38

Reported

2022-04-15 18:41

Platform

win10v2004-20220414-en

Max time kernel

54s

Max time network

61s

Command Line

"C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe"

Signatures

BlackNET

trojan blacknet

Executes dropped EXE

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe N/A
Key value queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c4f773dd6704bee65de3c2d32ee1036d = "C:\\Users\\Admin\\AppData\\Local\\Temp\\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe" C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c4f773dd6704bee65de3c2d32ee1036d = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe" C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c4f773dd6704bee65de3c2d32ee1036d = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Microsoft\\MyClient\\WindowsUpdate.exe" C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A

Enumerates physical storage devices

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\system32\PING.EXE N/A
N/A N/A C:\Windows\system32\PING.EXE N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe N/A
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N/A N/A C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe N/A
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N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe

"C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C ping 1.1.1.1 -n 1 -w 4000 > Nul & Del "C:\Users\Admin\AppData\Local\Temp\97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a.exe"

C:\Windows\system32\PING.EXE

ping 1.1.1.1 -n 1 -w 4000

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

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

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C ping 1.1.1.1 -n 1 -w 4000 > Nul & Del "C:\Users\Admin\AppData\Local\Temp\Microsoft\MyClient\WindowsUpdate.exe"

C:\Windows\system32\PING.EXE

ping 1.1.1.1 -n 1 -w 4000

Network

Country Destination Domain Proto
US 8.8.8.8:53 fsys0.pp.ua udp
US 8.8.8.8:53 fsys0.pp.ua udp
AU 104.46.162.226:443 tcp
FR 2.18.109.224:443 tcp
US 104.18.25.243:80 tcp
NL 104.97.14.81:80 tcp
NL 104.97.14.81:80 tcp
NL 104.97.14.81:80 tcp

Files

memory/3556-130-0x0000000001440000-0x0000000001442000-memory.dmp

memory/3556-131-0x000000000144A000-0x000000000144F000-memory.dmp

memory/1640-132-0x0000000000000000-mapping.dmp

memory/908-133-0x0000000000000000-mapping.dmp

memory/3556-135-0x000000001EBE0000-0x000000001EBE3000-memory.dmp

memory/1580-134-0x0000000000000000-mapping.dmp

memory/1580-138-0x00000000013F0000-0x00000000013F2000-memory.dmp

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

MD5 58112272402d04be1d79ea720bc917c3
SHA1 1608cd85740a07210b195923ec52efc18694c6eb
SHA256 97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a
SHA512 de88be09a38eb3192a5a39808ee802454c8cce395d2b082f1f9a043d3144a460133eab4c881a62115fb8c1b346506175e153516e98498a0397a95f3d934c4312

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

MD5 58112272402d04be1d79ea720bc917c3
SHA1 1608cd85740a07210b195923ec52efc18694c6eb
SHA256 97fe59f263c2e298140adb342db2d3802106842bce55934842a32997071daa4a
SHA512 de88be09a38eb3192a5a39808ee802454c8cce395d2b082f1f9a043d3144a460133eab4c881a62115fb8c1b346506175e153516e98498a0397a95f3d934c4312

memory/1580-139-0x00000000013FA000-0x00000000013FF000-memory.dmp

memory/4088-140-0x0000000000000000-mapping.dmp

memory/5112-141-0x0000000000000000-mapping.dmp