Malware Analysis Report

2025-04-03 09:23

Sample ID 250305-asqd8atq18
Target coredrive.exe
SHA256 a7c8390922ecfe4e4be4c9ffff567e91298a8bbf96dc96318305f45ec59f5221
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

a7c8390922ecfe4e4be4c9ffff567e91298a8bbf96dc96318305f45ec59f5221

Threat Level: Known bad

The file coredrive.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

Executes dropped EXE

Identifies Wine through registry keys

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

2025-03-05 00:28

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-03-05 00:28

Reported

2025-03-05 00:31

Platform

win11-20250217-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\coredrive.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\coredrive.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\ProgramData\tcmxfil\ivvi.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\coredrive.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\coredrive.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\ProgramData\tcmxfil\ivvi.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\ProgramData\tcmxfil\ivvi.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\tcmxfil\ivvi.exe N/A

Identifies Wine through registry keys

defense_evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1408376509-1621642251-2666462513-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\coredrive.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1408376509-1621642251-2666462513-1000\Software\Wine C:\ProgramData\tcmxfil\ivvi.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\coredrive.exe N/A
N/A N/A C:\ProgramData\tcmxfil\ivvi.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\coredrive.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\coredrive.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\ProgramData\tcmxfil\ivvi.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\coredrive.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\coredrive.exe N/A
N/A N/A C:\ProgramData\tcmxfil\ivvi.exe N/A
N/A N/A C:\ProgramData\tcmxfil\ivvi.exe N/A

Processes

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

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

C:\ProgramData\tcmxfil\ivvi.exe

C:\ProgramData\tcmxfil\ivvi.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 towerbingobongoboom.com udp
US 213.209.150.137:4000 towerbingobongoboom.com tcp
US 213.209.150.137:4645 towerbingobongoboom.com tcp

Files

memory/4068-0-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4068-1-0x00000000770D6000-0x00000000770D8000-memory.dmp

memory/4068-2-0x0000000000401000-0x0000000000403000-memory.dmp

memory/4068-3-0x0000000000400000-0x0000000000823000-memory.dmp

C:\ProgramData\tcmxfil\ivvi.exe

MD5 c6a399eb155322a8cbf1390c118553cb
SHA1 c59b0aa34638e8991358520e29625bb7fb4e3b6b
SHA256 a7c8390922ecfe4e4be4c9ffff567e91298a8bbf96dc96318305f45ec59f5221
SHA512 6437b6ea8990130f8e69b113f6ec8310e8831a80a2cf7ef1d8d16b323729a89c4a00a8900030e77f5671a7a40971e519731ec22519d98d7af29577dcb5dfe44e

memory/4588-8-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4068-9-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-10-0x0000000000400000-0x0000000000823000-memory.dmp

C:\Windows\Tasks\Test Task17.job

MD5 8ff7f0ac98bbc5a28e0836bdea512bb1
SHA1 4f85309d5493f7ec323525e374d1e06f72161be1
SHA256 3d370057d48a7ff15ffe4bfb4092c795d39d8a124b52af3d6ffee0ce41704cdb
SHA512 91728ad63910d6bcc68854983920df86c2c16b84aa90cdf7b92863d9d2e4ce187ae08d0c33eba9d7da47a427a364dd64ec3b9f532cb6cb97ff2b52601071a6c9

memory/4588-11-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4068-13-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4068-14-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4068-15-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4068-16-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-17-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-18-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-19-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4068-20-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-21-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4068-22-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-23-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4068-24-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-25-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4068-26-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-27-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4068-28-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4068-29-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-30-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-31-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-32-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-33-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-34-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-35-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-36-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-37-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4588-38-0x0000000000400000-0x0000000000823000-memory.dmp