Malware Analysis Report

2025-01-22 22:49

Sample ID 240908-ekm2cavekk
Target b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.exe
SHA256 b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb
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

b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb

Threat Level: Known bad

The file b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.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

2024-09-08 04:00

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-08 04:00

Reported

2024-09-08 04:02

Platform

win7-20240704-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.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\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.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\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.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\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.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\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.exe

"C:\Users\Admin\AppData\Local\Temp\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp

Files

memory/3004-0-0x0000000000B80000-0x00000000011FB000-memory.dmp

memory/3004-1-0x0000000077E90000-0x0000000077E92000-memory.dmp

memory/3004-2-0x0000000000B81000-0x0000000000B95000-memory.dmp

memory/3004-3-0x0000000000B80000-0x00000000011FB000-memory.dmp

memory/3004-5-0x0000000000B80000-0x00000000011FB000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-08 04:00

Reported

2024-09-08 04:02

Platform

win10v2004-20240802-en

Max time kernel

125s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.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\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.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\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.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\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.exe

"C:\Users\Admin\AppData\Local\Temp\b2d7f1e627e20804800b417f7d4d8a9133c58b16956a35a8885b011cbd7f79bb.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4336,i,8293235976513689021,7261015831736501466,262144 --variations-seed-version --mojo-platform-channel-handle=4324 /prefetch:8

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 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 103.113.215.185.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 59.170.16.2.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp

Files

memory/2552-0-0x0000000000B60000-0x00000000011DB000-memory.dmp

memory/2552-1-0x0000000077114000-0x0000000077116000-memory.dmp

memory/2552-2-0x0000000000B61000-0x0000000000B75000-memory.dmp

memory/2552-3-0x0000000000B60000-0x00000000011DB000-memory.dmp

memory/2552-4-0x0000000000B60000-0x00000000011DB000-memory.dmp