Malware Analysis Report

2024-10-24 18:41

Sample ID 240920-bf9g1a1apd
Target 103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.exe
SHA256 103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a
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

103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a

Threat Level: Known bad

The file 103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.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 01:06

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-20 01:06

Reported

2024-09-20 01:08

Platform

win7-20240704-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.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\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.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\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.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\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.exe

"C:\Users\Admin\AppData\Local\Temp\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp

Files

memory/1196-0-0x0000000001250000-0x0000000001731000-memory.dmp

memory/1196-1-0x00000000776A0000-0x00000000776A2000-memory.dmp

memory/1196-3-0x0000000001250000-0x0000000001731000-memory.dmp

memory/1196-2-0x0000000001251000-0x0000000001265000-memory.dmp

memory/1196-5-0x0000000001250000-0x0000000001731000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-20 01:06

Reported

2024-09-20 01:09

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

98s

Command Line

"C:\Users\Admin\AppData\Local\Temp\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.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\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.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\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.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\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.exe

"C:\Users\Admin\AppData\Local\Temp\103cd524a095d7ac73aed8efd10c0d05fa327157f5ce406d884b9cf541c8c57a.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp
US 8.8.8.8:53 217.106.137.52.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 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp

Files

memory/4928-0-0x0000000000DD0000-0x00000000012B1000-memory.dmp

memory/4928-1-0x0000000077574000-0x0000000077576000-memory.dmp

memory/4928-2-0x0000000000DD1000-0x0000000000DE5000-memory.dmp

memory/4928-3-0x0000000000DD0000-0x00000000012B1000-memory.dmp

memory/4928-5-0x0000000000DD0000-0x00000000012B1000-memory.dmp