Malware Analysis Report

2025-04-03 09:26

Sample ID 250305-x5ql3sxlw6
Target feedlablest.exe
SHA256 936004bbb9d3c4763c0e36cc887b21315ae6c2d55c366cb3b3390d480b827107
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

936004bbb9d3c4763c0e36cc887b21315ae6c2d55c366cb3b3390d480b827107

Threat Level: Known bad

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

Malicious Activity Summary

systembc defense_evasion discovery trojan

SystemBC

Systembc family

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 19:26

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-03-05 19:26

Reported

2025-03-05 19:29

Platform

win11-20250218-en

Max time kernel

149s

Max time network

152s

Command Line

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\qkdwna\prujkfc.exe N/A

Identifies Wine through registry keys

defense_evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2287204051-441334380-1151193565-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\feedlablest.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2287204051-441334380-1151193565-1000\Software\Wine C:\ProgramData\qkdwna\prujkfc.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\feedlablest.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\feedlablest.exe N/A
N/A N/A C:\ProgramData\qkdwna\prujkfc.exe N/A
N/A N/A C:\ProgramData\qkdwna\prujkfc.exe N/A

Processes

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

"C:\Users\Admin\AppData\Local\Temp\feedlablest.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 --string-annotations --always-read-main-dll --field-trial-handle=4100,i,8425512666034524542,4476834323552806530,262144 --variations-seed-version --mojo-platform-channel-handle=3364 /prefetch:14

C:\ProgramData\qkdwna\prujkfc.exe

C:\ProgramData\qkdwna\prujkfc.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 --string-annotations --always-read-main-dll --field-trial-handle=4108,i,8425512666034524542,4476834323552806530,262144 --variations-seed-version --mojo-platform-channel-handle=5004 /prefetch:14

Network

Country Destination Domain Proto
GB 2.20.12.95:80 msedge.b.tlu.dl.delivery.mp.microsoft.com tcp
US 8.8.8.8:53 edge.microsoft.com udp
US 8.8.8.8:53 edge.microsoft.com udp
US 204.79.197.239:443 edge.microsoft.com tcp
US 8.8.8.8:53 www.microsoft.com udp
US 8.8.8.8:53 www.microsoft.com udp
GB 2.17.5.133:80 www.microsoft.com tcp
US 8.8.8.8:53 edge.microsoft.com udp
US 8.8.8.8:53 edge.microsoft.com udp
US 13.107.21.239:443 edge.microsoft.com tcp
US 13.107.21.239:443 edge.microsoft.com tcp
US 199.232.210.172:80 msedge.b.tlu.dl.delivery.mp.microsoft.com tcp
US 8.8.8.8:53 msedge.b.tlu.dl.delivery.mp.microsoft.com udp
US 8.8.8.8:53 msedge.b.tlu.dl.delivery.mp.microsoft.com udp
IT 91.80.49.22:80 msedge.b.tlu.dl.delivery.mp.microsoft.com tcp
US 213.209.150.137:4000 towerbingobongoboom.com tcp
US 213.209.150.137:4117 towerbingobongoboom.com tcp
US 8.8.8.8:53 edge.microsoft.com udp
US 8.8.8.8:53 edge.microsoft.com udp
US 204.79.197.239:443 edge.microsoft.com tcp

Files

memory/4944-0-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4944-1-0x00000000775D6000-0x00000000775D8000-memory.dmp

memory/4944-2-0x0000000000401000-0x0000000000403000-memory.dmp

memory/4944-3-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4944-6-0x0000000000400000-0x0000000000823000-memory.dmp

C:\ProgramData\qkdwna\prujkfc.exe

MD5 f53198e8b444658cf7134f5ccb466a98
SHA1 0283e56ed7201eecfc7dad30cc6f3f30d677be66
SHA256 936004bbb9d3c4763c0e36cc887b21315ae6c2d55c366cb3b3390d480b827107
SHA512 ee40f63f7b75cc1b55d11c56c25086d2d66ae86a3f65326d5a75cf0f2fac94ebee622cd4844b4f6468b2bfd011ab80558f41e1b62d2a7864b0ce7f61d3bdcf09

memory/4944-9-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-10-0x0000000000400000-0x0000000000823000-memory.dmp

C:\Windows\Tasks\Test Task17.job

MD5 d1ad714f83eb4c269a1dfa5028e5ee37
SHA1 22ba031bc9655e9f07501ce2f9a46c30a37b59c3
SHA256 4cb00efc5a379c0f6bc57c85825d7c803eb5c7731ba4c53a3be83e4427b5192c
SHA512 9a56a4334c5c1fb2186e70a947979248df550dc6266ba3cbe0d4cb6c8ec4916820b6d6123aedd6c45acc00708078f6c8da21b1d0ce3f5652d4bdf880757d7331

memory/760-12-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4944-13-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-14-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-15-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-16-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-17-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4944-18-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-19-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4944-20-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-21-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4944-22-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-23-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4944-24-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-25-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4944-26-0x0000000000400000-0x0000000000823000-memory.dmp

memory/4944-27-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-28-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-29-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-30-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-31-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-32-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-33-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-34-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-35-0x0000000000400000-0x0000000000823000-memory.dmp

memory/760-36-0x0000000000400000-0x0000000000823000-memory.dmp