Malware Analysis Report

2024-10-24 18:41

Sample ID 240920-bjt7gs1brg
Target 2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe
SHA256 2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda
Tags
stealc rave discovery evasion stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda

Threat Level: Known bad

The file 2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe was found to be: Known bad.

Malicious Activity Summary

stealc rave discovery evasion stealer

Stealc

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

Checks BIOS information in registry

Identifies Wine through registry keys

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-20 01:10

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-20 01:10

Reported

2024-09-20 01:13

Platform

win7-20240729-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe"

Signatures

Stealc

stealer stealc

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\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.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\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe

"C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp

Files

memory/2188-0-0x0000000001200000-0x00000000016D8000-memory.dmp

memory/2188-1-0x00000000779E0000-0x00000000779E2000-memory.dmp

memory/2188-2-0x0000000001201000-0x0000000001215000-memory.dmp

memory/2188-3-0x0000000001200000-0x00000000016D8000-memory.dmp

memory/2188-4-0x0000000001200000-0x00000000016D8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-20 01:10

Reported

2024-09-20 01:13

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe"

Signatures

Stealc

stealer stealc

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\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.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\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe

"C:\Users\Admin\AppData\Local\Temp\2245035c0919382e0f3583664e5b37040f97770da031d256cba9113b88793eda.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 103.113.215.185.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/3136-0-0x00000000008D0000-0x0000000000DA8000-memory.dmp

memory/3136-1-0x0000000077C94000-0x0000000077C96000-memory.dmp

memory/3136-2-0x00000000008D1000-0x00000000008E5000-memory.dmp

memory/3136-3-0x00000000008D0000-0x0000000000DA8000-memory.dmp

memory/3136-4-0x00000000008D0000-0x0000000000DA8000-memory.dmp