Malware Analysis Report

2024-11-30 22:01

Sample ID 240705-stkt8starc
Target 9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421
SHA256 9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421
Tags
amadey 4dd39d evasion trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421

Threat Level: Known bad

The file 9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421 was found to be: Known bad.

Malicious Activity Summary

amadey 4dd39d evasion trojan

Amadey

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Loads dropped DLL

Identifies Wine through registry keys

Checks computer location settings

Checks BIOS information in registry

Executes dropped EXE

Suspicious use of NtSetInformationThreadHideFromDebugger

Drops file in Windows directory

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-05 15:25

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-05 15:25

Reported

2024-07-05 15:28

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe"

Signatures

Amadey

trojan amadey

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\explorti.job C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe N/A

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe

"C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe"

C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe

"C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe"

C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe

C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe

C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe

C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe

C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe

C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe

Network

Country Destination Domain Proto
RU 77.91.77.82:80 tcp
RU 77.91.77.82:80 tcp

Files

memory/4244-0-0x00000000000A0000-0x0000000000558000-memory.dmp

memory/4244-1-0x0000000077BA4000-0x0000000077BA6000-memory.dmp

memory/4244-2-0x00000000000A1000-0x00000000000CF000-memory.dmp

memory/4244-3-0x00000000000A0000-0x0000000000558000-memory.dmp

memory/4244-5-0x00000000000A0000-0x0000000000558000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe

MD5 fa6419e8f5a6bee481357f2a1f40efeb
SHA1 666ca974b3918ca19323fe9813a14cb4790f028f
SHA256 9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421
SHA512 862feebede8863728cc3d34b48c0d3acea31279e96c39957a8b4e84f7d771ce65c7620a6fbeb80dd2e8c0bc9d6117e8d6ac63afeac3d0d0b89e28a48e1dc5dfa

memory/1432-16-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/4244-18-0x00000000000A0000-0x0000000000558000-memory.dmp

memory/1432-19-0x0000000000A41000-0x0000000000A6F000-memory.dmp

memory/1432-20-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-21-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-22-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-23-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-24-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/5088-26-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-27-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/5088-28-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/5088-29-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-30-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-31-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-32-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-33-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-34-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-35-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/3100-37-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/3100-38-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-39-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-40-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-41-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-42-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-43-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/1432-44-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/2148-46-0x0000000000A40000-0x0000000000EF8000-memory.dmp

memory/2148-48-0x0000000000A40000-0x0000000000EF8000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-05 15:25

Reported

2024-07-05 15:27

Platform

win7-20240508-en

Max time kernel

141s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe"

Signatures

Amadey

trojan amadey

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\explorti.job C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe N/A

Enumerates physical storage devices

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe

"C:\Users\Admin\AppData\Local\Temp\9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421.exe"

C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe

"C:\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe"

Network

Country Destination Domain Proto
RU 77.91.77.82:80 tcp
RU 77.91.77.82:80 tcp
RU 77.91.77.82:80 tcp
RU 77.91.77.82:80 tcp

Files

memory/2108-0-0x0000000000B80000-0x0000000001038000-memory.dmp

memory/2108-1-0x0000000076EA0000-0x0000000076EA2000-memory.dmp

memory/2108-2-0x0000000000B81000-0x0000000000BAF000-memory.dmp

memory/2108-3-0x0000000000B80000-0x0000000001038000-memory.dmp

memory/2108-5-0x0000000000B80000-0x0000000001038000-memory.dmp

\Users\Admin\AppData\Local\Temp\ad40971b6b\explorti.exe

MD5 fa6419e8f5a6bee481357f2a1f40efeb
SHA1 666ca974b3918ca19323fe9813a14cb4790f028f
SHA256 9b428357147e9b84f035527c1308870147a2930027e20531df19429545f06421
SHA512 862feebede8863728cc3d34b48c0d3acea31279e96c39957a8b4e84f7d771ce65c7620a6fbeb80dd2e8c0bc9d6117e8d6ac63afeac3d0d0b89e28a48e1dc5dfa

memory/3024-16-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/2108-15-0x0000000000B80000-0x0000000001038000-memory.dmp

memory/3024-17-0x00000000013B1000-0x00000000013DF000-memory.dmp

memory/3024-18-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-20-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-21-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-23-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-22-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-24-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-25-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-26-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-27-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-28-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-29-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-30-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-31-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-32-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-33-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-34-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-35-0x00000000013B0000-0x0000000001868000-memory.dmp

memory/3024-36-0x00000000013B0000-0x0000000001868000-memory.dmp