Malware Analysis Report

2025-06-15 21:58

Sample ID 221113-fw2vbadf3v
Target efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1
SHA256 efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1
Tags
systembc evasion trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1

Threat Level: Known bad

The file efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1 was found to be: Known bad.

Malicious Activity Summary

systembc evasion trojan

SystemBC

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

Executes dropped EXE

Identifies Wine through registry keys

Checks BIOS information in registry

Suspicious use of NtSetInformationThreadHideFromDebugger

Drops file in Windows directory

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-11-13 05:14

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-11-13 05:14

Reported

2022-11-13 05:19

Platform

win7-20220901-en

Max time kernel

204s

Max time network

268s

Command Line

"C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe"

Signatures

SystemBC

trojan systembc

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\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\ProgramData\jtfnc\ptbwe.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\ProgramData\jtfnc\ptbwe.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\jtfnc\ptbwe.exe N/A
N/A N/A C:\ProgramData\jtfnc\ptbwe.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\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\ProgramData\jtfnc\ptbwe.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\ProgramData\jtfnc\ptbwe.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\ProgramData\jtfnc\ptbwe.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\ProgramData\jtfnc\ptbwe.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Wine C:\ProgramData\jtfnc\ptbwe.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Wine C:\ProgramData\jtfnc\ptbwe.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe N/A
N/A N/A C:\ProgramData\jtfnc\ptbwe.exe N/A
N/A N/A C:\ProgramData\jtfnc\ptbwe.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\ptbwe.job C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe N/A
File opened for modification C:\Windows\Tasks\ptbwe.job C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe

"C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {83A76972-6FAD-4620-A3F9-0347C79D407F} S-1-5-21-4063495947-34355257-727531523-1000:RYNKSFQE\Admin:Interactive:[1]

C:\ProgramData\jtfnc\ptbwe.exe

C:\ProgramData\jtfnc\ptbwe.exe start2

C:\ProgramData\jtfnc\ptbwe.exe

C:\ProgramData\jtfnc\ptbwe.exe start2

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 cryptotab.me udp
N/A 23.94.163.16:4001 cryptotab.me tcp
N/A 172.217.2.46:80 172.217.2.46 tcp

Files

memory/1128-54-0x0000000000400000-0x00000000009C3000-memory.dmp

memory/1128-55-0x0000000076961000-0x0000000076963000-memory.dmp

memory/1128-56-0x0000000077D50000-0x0000000077ED0000-memory.dmp

memory/1128-57-0x0000000000400000-0x00000000009C3000-memory.dmp

C:\ProgramData\jtfnc\ptbwe.exe

MD5 3aad6e79569fcc68f0b8530225e08743
SHA1 e1247952bedea6d68c471b779d673167d5e1d774
SHA256 efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1
SHA512 b30938d0210f9864f1165348f7bdbc1b6732687e8ee4a013b2c53f0ca0d212f8722cc8c6c4c187645f04d614cf2a21707869812c04ff551057f4d969141ab50d

C:\ProgramData\jtfnc\ptbwe.exe

MD5 3aad6e79569fcc68f0b8530225e08743
SHA1 e1247952bedea6d68c471b779d673167d5e1d774
SHA256 efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1
SHA512 b30938d0210f9864f1165348f7bdbc1b6732687e8ee4a013b2c53f0ca0d212f8722cc8c6c4c187645f04d614cf2a21707869812c04ff551057f4d969141ab50d

memory/856-59-0x0000000000000000-mapping.dmp

memory/856-61-0x0000000000400000-0x00000000009C3000-memory.dmp

memory/1128-62-0x0000000077D50000-0x0000000077ED0000-memory.dmp

memory/856-64-0x0000000000400000-0x00000000009C3000-memory.dmp

memory/1128-65-0x0000000077D50000-0x0000000077ED0000-memory.dmp

memory/856-66-0x0000000077D50000-0x0000000077ED0000-memory.dmp

memory/1820-67-0x0000000000000000-mapping.dmp

C:\ProgramData\jtfnc\ptbwe.exe

MD5 3aad6e79569fcc68f0b8530225e08743
SHA1 e1247952bedea6d68c471b779d673167d5e1d774
SHA256 efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1
SHA512 b30938d0210f9864f1165348f7bdbc1b6732687e8ee4a013b2c53f0ca0d212f8722cc8c6c4c187645f04d614cf2a21707869812c04ff551057f4d969141ab50d

memory/1820-69-0x0000000000400000-0x00000000009C3000-memory.dmp

memory/1820-71-0x0000000077D50000-0x0000000077ED0000-memory.dmp

memory/1820-72-0x0000000000400000-0x00000000009C3000-memory.dmp

memory/1820-73-0x0000000077D50000-0x0000000077ED0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-11-13 05:14

Reported

2022-11-13 05:19

Platform

win10-20220812-en

Max time kernel

205s

Max time network

268s

Command Line

"C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe"

Signatures

SystemBC

trojan systembc

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\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\ProgramData\fbix\resp.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\ProgramData\fbix\resp.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\fbix\resp.exe N/A
N/A N/A C:\ProgramData\fbix\resp.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\ProgramData\fbix\resp.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\ProgramData\fbix\resp.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\ProgramData\fbix\resp.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\ProgramData\fbix\resp.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000\Software\Wine C:\ProgramData\fbix\resp.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2482096546-1136599444-1359412500-1000\Software\Wine C:\ProgramData\fbix\resp.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe N/A
N/A N/A C:\ProgramData\fbix\resp.exe N/A
N/A N/A C:\ProgramData\fbix\resp.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\Tasks\resp.job C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe N/A
File opened for modification C:\Windows\Tasks\resp.job C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe

"C:\Users\Admin\AppData\Local\Temp\efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1.exe"

C:\ProgramData\fbix\resp.exe

C:\ProgramData\fbix\resp.exe start2

C:\ProgramData\fbix\resp.exe

C:\ProgramData\fbix\resp.exe start2

Network

Country Destination Domain Proto
N/A 52.168.117.170:443 tcp
N/A 87.248.202.1:80 tcp
N/A 8.8.8.8:53 cryptotab.me udp
N/A 23.94.163.16:4001 cryptotab.me tcp
N/A 172.217.2.46:80 172.217.2.46 tcp

Files

memory/2016-120-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-121-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-122-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-123-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-124-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-125-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-126-0x0000000000400000-0x00000000009C3000-memory.dmp

memory/2016-127-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-128-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-129-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-130-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-131-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-132-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-133-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-134-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-135-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-136-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-137-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-138-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-140-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-139-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-142-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-141-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-143-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-144-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-145-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-146-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-147-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-148-0x0000000000400000-0x00000000009C3000-memory.dmp

memory/2016-149-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-150-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-151-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-152-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-153-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-154-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-156-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-155-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-157-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-158-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-159-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-160-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-161-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-162-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-163-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-164-0x0000000000400000-0x00000000009C3000-memory.dmp

memory/2016-165-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-167-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-166-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-168-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-169-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-170-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-171-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-172-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-173-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/2016-174-0x0000000076FB0000-0x000000007713E000-memory.dmp

C:\ProgramData\fbix\resp.exe

MD5 3aad6e79569fcc68f0b8530225e08743
SHA1 e1247952bedea6d68c471b779d673167d5e1d774
SHA256 efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1
SHA512 b30938d0210f9864f1165348f7bdbc1b6732687e8ee4a013b2c53f0ca0d212f8722cc8c6c4c187645f04d614cf2a21707869812c04ff551057f4d969141ab50d

memory/4652-176-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/4652-177-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/4652-178-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/4652-179-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/4652-180-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/4652-181-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/4652-182-0x0000000076FB0000-0x000000007713E000-memory.dmp

C:\ProgramData\fbix\resp.exe

MD5 3aad6e79569fcc68f0b8530225e08743
SHA1 e1247952bedea6d68c471b779d673167d5e1d774
SHA256 efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1
SHA512 b30938d0210f9864f1165348f7bdbc1b6732687e8ee4a013b2c53f0ca0d212f8722cc8c6c4c187645f04d614cf2a21707869812c04ff551057f4d969141ab50d

memory/4652-184-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/4652-185-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/4652-186-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/4652-187-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/4652-188-0x0000000076FB0000-0x000000007713E000-memory.dmp

memory/4652-215-0x0000000000400000-0x00000000009C3000-memory.dmp

memory/4652-220-0x0000000000400000-0x00000000009C3000-memory.dmp

C:\ProgramData\fbix\resp.exe

MD5 3aad6e79569fcc68f0b8530225e08743
SHA1 e1247952bedea6d68c471b779d673167d5e1d774
SHA256 efb2b92a9ad40fb2d039fed04162ec421d3fd4bcd86adedbcb52d03ed5b742c1
SHA512 b30938d0210f9864f1165348f7bdbc1b6732687e8ee4a013b2c53f0ca0d212f8722cc8c6c4c187645f04d614cf2a21707869812c04ff551057f4d969141ab50d

memory/2224-245-0x0000000000400000-0x00000000009C3000-memory.dmp

memory/2224-263-0x0000000000400000-0x00000000009C3000-memory.dmp

memory/2224-264-0x0000000000400000-0x00000000009C3000-memory.dmp