Malware Analysis Report

2025-04-03 09:18

Sample ID 250306-y8b4jawzbv
Target cubrodriver.exe
SHA256 c13d59dc2e8ee1cbdb8016de0fb3b374f827406fa5d2d1aa4a2820170816d131
Tags
systembc defense_evasion discovery trojan
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 Overview

score
10/10

SHA256

c13d59dc2e8ee1cbdb8016de0fb3b374f827406fa5d2d1aa4a2820170816d131

Threat Level: Known bad

The file cubrodriver.exe was found to be: Known bad.

Malicious Activity Summary

systembc defense_evasion discovery trojan

Systembc family

SystemBC

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

Checks BIOS information in registry

Identifies Wine through registry keys

Executes dropped EXE

Suspicious use of NtSetInformationThreadHideFromDebugger

Drops file in Windows directory

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-03-06 20:26

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-03-06 20:26

Reported

2025-03-06 20:29

Platform

win11-20250217-en

Max time kernel

147s

Max time network

151s

Command Line

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

Signatures

SystemBC

trojan systembc

Systembc family

systembc

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

defense_evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\cubrodriver.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\ProgramData\ooqgun\umgk.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\cubrodriver.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\cubrodriver.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\ProgramData\ooqgun\umgk.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\ProgramData\ooqgun\umgk.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\ooqgun\umgk.exe N/A

Identifies Wine through registry keys

defense_evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2250935964-4080446702-2776729278-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\cubrodriver.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2250935964-4080446702-2776729278-1000\Software\Wine C:\ProgramData\ooqgun\umgk.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cubrodriver.exe N/A
N/A N/A C:\ProgramData\ooqgun\umgk.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\Test Task17.job C:\Users\Admin\AppData\Local\Temp\cubrodriver.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\cubrodriver.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\ProgramData\ooqgun\umgk.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cubrodriver.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\cubrodriver.exe N/A
N/A N/A C:\ProgramData\ooqgun\umgk.exe N/A
N/A N/A C:\ProgramData\ooqgun\umgk.exe N/A

Processes

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

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

C:\ProgramData\ooqgun\umgk.exe

C:\ProgramData\ooqgun\umgk.exe

Network

Country Destination Domain Proto
US 213.209.150.137:4000 towerbingobongoboom.com tcp
US 213.209.150.137:4086 towerbingobongoboom.com tcp
EG 41.178.51.174:25 mx.ipi.gov.eg tcp
US 106.0.62.80:587 brendanyost.com tcp

Files

memory/2768-0-0x0000000000400000-0x0000000000840000-memory.dmp

memory/2768-1-0x0000000077826000-0x0000000077828000-memory.dmp

memory/2768-2-0x0000000000401000-0x0000000000403000-memory.dmp

memory/2768-3-0x0000000000400000-0x0000000000840000-memory.dmp

memory/2768-6-0x0000000000400000-0x0000000000840000-memory.dmp

memory/2768-7-0x0000000000400000-0x0000000000840000-memory.dmp

memory/2768-8-0x0000000000400000-0x0000000000840000-memory.dmp

memory/2768-9-0x0000000000400000-0x0000000000840000-memory.dmp

memory/2768-10-0x0000000000400000-0x0000000000840000-memory.dmp

memory/2768-11-0x0000000000400000-0x0000000000840000-memory.dmp

memory/2768-12-0x0000000000400000-0x0000000000840000-memory.dmp

memory/2768-13-0x0000000000400000-0x0000000000840000-memory.dmp

memory/2768-14-0x0000000000400000-0x0000000000840000-memory.dmp

C:\ProgramData\ooqgun\umgk.exe

MD5 190272ebd2e82a80b242b1bdd442b859
SHA1 fceb12a205c28c30b2049c55924a9872a1a3eb71
SHA256 c13d59dc2e8ee1cbdb8016de0fb3b374f827406fa5d2d1aa4a2820170816d131
SHA512 f3b30d8ea2dd2c451a042b4ed7a9e98d2bcfbb86a88bec2d672a3e1ae6ab3932daf8987eef872e6adb11144f92b9954ac6f6ce67e24a2bc391d7b34ebef876ae

memory/3020-17-0x0000000000400000-0x0000000000840000-memory.dmp

memory/3020-18-0x0000000000400000-0x0000000000840000-memory.dmp

memory/3020-19-0x0000000000400000-0x0000000000840000-memory.dmp

C:\Windows\Tasks\Test Task17.job

MD5 6a892a254b37dd5ee864d98705970562
SHA1 b0c88f53a9ad095dd264757efb9ffeb3f3141d42
SHA256 4364357b0ad6ef650e31711afb2332d00aca3f944c0445bc900401d0ab7ce414
SHA512 1216d11d916bb7d46c01278797d77fc4f14f0f946401132baf6ac10a3c3eb69d952e271c0970300f34c07173ec692e12b6d5fb5413b8d1e2d2d1deb560381643

memory/2768-21-0x0000000000400000-0x0000000000840000-memory.dmp

memory/3020-22-0x0000000000400000-0x0000000000840000-memory.dmp

memory/2768-23-0x0000000000400000-0x0000000000840000-memory.dmp

memory/3020-24-0x0000000000400000-0x0000000000840000-memory.dmp

memory/3020-25-0x0000000000400000-0x0000000000840000-memory.dmp

memory/3020-26-0x0000000000400000-0x0000000000840000-memory.dmp

memory/3020-27-0x0000000000400000-0x0000000000840000-memory.dmp

memory/3020-28-0x0000000000400000-0x0000000000840000-memory.dmp

memory/3020-29-0x0000000000400000-0x0000000000840000-memory.dmp

memory/3020-30-0x0000000000400000-0x0000000000840000-memory.dmp

memory/3020-31-0x0000000000400000-0x0000000000840000-memory.dmp

memory/3020-32-0x0000000000400000-0x0000000000840000-memory.dmp

memory/3020-33-0x0000000000400000-0x0000000000840000-memory.dmp

memory/3020-34-0x0000000000400000-0x0000000000840000-memory.dmp