Malware Analysis Report

2025-04-03 09:10

Sample ID 250227-d347xatsbt
Target 81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe
SHA256 81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699

Threat Level: Known bad

The file 81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.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)

Executes dropped EXE

Checks BIOS information in registry

Identifies Wine through registry keys

Suspicious use of NtSetInformationThreadHideFromDebugger

Drops file in Windows directory

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-02-27 03:32

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-27 03:32

Reported

2025-02-27 03:35

Platform

win7-20241010-en

Max time kernel

142s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.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\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\ProgramData\djrd\pfullte.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\ProgramData\djrd\pfullte.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\ProgramData\djrd\pfullte.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\djrd\pfullte.exe N/A

Identifies Wine through registry keys

defense_evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Wine C:\ProgramData\djrd\pfullte.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe N/A
N/A N/A C:\ProgramData\djrd\pfullte.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\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\ProgramData\djrd\pfullte.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe N/A
N/A N/A C:\ProgramData\djrd\pfullte.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2768 wrote to memory of 2816 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\djrd\pfullte.exe
PID 2768 wrote to memory of 2816 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\djrd\pfullte.exe
PID 2768 wrote to memory of 2816 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\djrd\pfullte.exe
PID 2768 wrote to memory of 2816 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\djrd\pfullte.exe

Processes

C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe

"C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {E3E68A72-BB1B-451B-8F6E-EDA07D70303D} S-1-5-21-2039016743-699959520-214465309-1000:PIDEURYY\Admin:Interactive:[1]

C:\ProgramData\djrd\pfullte.exe

C:\ProgramData\djrd\pfullte.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 towerbingobongoboom.com udp
DE 93.186.202.3:4000 towerbingobongoboom.com tcp
DE 93.186.202.3:5417 towerbingobongoboom.com tcp

Files

memory/1600-0-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1600-2-0x0000000000401000-0x0000000000403000-memory.dmp

memory/1600-1-0x0000000077930000-0x0000000077932000-memory.dmp

memory/1600-4-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-8-0x0000000000400000-0x0000000000846000-memory.dmp

C:\ProgramData\djrd\pfullte.exe

MD5 f398330ff76c75dbaffe5c18078c35e5
SHA1 97c7b2fa744cdf86ce74322f0a683b260e21d188
SHA256 81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699
SHA512 69768f2338ceff5e0872ef066201a3b06ad30b31138524d62943982d67dd046a8cd2051a9730a8e81ea93404fddd734fa1c6cab8ccb5689fd343572604c8cb8c

memory/2816-9-0x0000000000400000-0x0000000000846000-memory.dmp

C:\Windows\Tasks\Test Task17.job

MD5 0c236d5598b4bd3b156f21bbc4b22665
SHA1 73d0198d4e3bcdbf85d7f45a6c7ba60f01ec7dae
SHA256 261035f5461d9931e448e76f2a2362abf268424883324be231d54b7adde8513a
SHA512 f80fdd6fe1a8ad7665ca9557fd07eda3351623d5c4b6279dd7fe37805cda76c3d4daad6efba8db09f6e1f06ca4d297f07a4c14ad582f897781f4b83fa78825d0

memory/2816-11-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1600-12-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1600-13-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1600-14-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-15-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1600-16-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-17-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-18-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-19-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1600-20-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-21-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1600-22-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-23-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1600-24-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-25-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1600-26-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-27-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1600-28-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-30-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-31-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-32-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-33-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-34-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-35-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-36-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-37-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-38-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-39-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2816-40-0x0000000000400000-0x0000000000846000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-27 03:32

Reported

2025-02-27 03:35

Platform

win10v2004-20250217-en

Max time kernel

142s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.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\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\ProgramData\haso\vxdhnja.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\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\ProgramData\haso\vxdhnja.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\ProgramData\haso\vxdhnja.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\haso\vxdhnja.exe N/A

Identifies Wine through registry keys

defense_evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Software\Wine C:\ProgramData\haso\vxdhnja.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe N/A
N/A N/A C:\ProgramData\haso\vxdhnja.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\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.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\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\ProgramData\haso\vxdhnja.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe

"C:\Users\Admin\AppData\Local\Temp\81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699.exe"

C:\ProgramData\haso\vxdhnja.exe

C:\ProgramData\haso\vxdhnja.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 towerbingobongoboom.com udp
DE 93.186.202.3:4000 towerbingobongoboom.com tcp
DE 93.186.202.3:5113 towerbingobongoboom.com tcp
US 104.18.35.25:443 tcp

Files

memory/3856-0-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3856-1-0x0000000076F34000-0x0000000076F36000-memory.dmp

memory/3856-2-0x0000000000401000-0x0000000000403000-memory.dmp

memory/3856-4-0x0000000000400000-0x0000000000846000-memory.dmp

C:\ProgramData\haso\vxdhnja.exe

MD5 f398330ff76c75dbaffe5c18078c35e5
SHA1 97c7b2fa744cdf86ce74322f0a683b260e21d188
SHA256 81adc7b98a97b77b6259fe66d9f5919ad55de88ff242637de023ee856a095699
SHA512 69768f2338ceff5e0872ef066201a3b06ad30b31138524d62943982d67dd046a8cd2051a9730a8e81ea93404fddd734fa1c6cab8ccb5689fd343572604c8cb8c

memory/2028-8-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-9-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-10-0x0000000000400000-0x0000000000846000-memory.dmp

C:\Windows\Tasks\Test Task17.job

MD5 ede2ca3bf73876aa23d977124c1e8390
SHA1 437ef9fa74da28adb249d498c9086d89e4a55924
SHA256 d8716a2657cd57b9c3bdd65ea5deed8e99923d6599e903e5cd4622f35b0151e9
SHA512 eae690c285f4aac49e76e3fe4d1a911567738d19212c6637951a5384ac22ab9c9402f4b3e0cecc078d7e2a4116aa3ffd8f7b6f85a330568ba4ac71a46203b77b

memory/3856-12-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3856-13-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3856-14-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3856-15-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3856-16-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-17-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-18-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3856-19-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-20-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3856-21-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-22-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3856-23-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-24-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3856-25-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-26-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3856-27-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3856-29-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-30-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-31-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-32-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-33-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-34-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-35-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-36-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-37-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2028-38-0x0000000000400000-0x0000000000846000-memory.dmp