Malware Analysis Report

2024-10-24 18:41

Sample ID 240920-brxyca1fpc
Target 5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.exe
SHA256 5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950
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

5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950

Threat Level: Known bad

The file 5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.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

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-20 01:23

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-20 01:23

Reported

2024-09-20 01:25

Platform

win7-20240903-en

Max time kernel

122s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.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\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.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\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.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\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.exe

"C:\Users\Admin\AppData\Local\Temp\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp

Files

memory/2364-0-0x0000000001260000-0x0000000001730000-memory.dmp

memory/2364-1-0x0000000077670000-0x0000000077672000-memory.dmp

memory/2364-2-0x0000000001261000-0x0000000001275000-memory.dmp

memory/2364-3-0x0000000001260000-0x0000000001730000-memory.dmp

memory/2364-5-0x0000000001260000-0x0000000001730000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-20 01:23

Reported

2024-09-20 01:25

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.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\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.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\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.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\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.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\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.exe

"C:\Users\Admin\AppData\Local\Temp\5daa96b143664e8240a32b32b58334dae0cb4f3b0e007326b254781650bd6950.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 103.113.215.185.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.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 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 44.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 36.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp

Files

memory/1180-0-0x0000000000110000-0x00000000005E0000-memory.dmp

memory/1180-1-0x0000000077354000-0x0000000077356000-memory.dmp

memory/1180-2-0x0000000000111000-0x0000000000125000-memory.dmp

memory/1180-3-0x0000000000110000-0x00000000005E0000-memory.dmp

memory/1180-4-0x0000000000110000-0x00000000005E0000-memory.dmp