Malware Analysis Report

2025-04-03 09:17

Sample ID 250304-j7arravxbz
Target soudneff.exe
SHA256 e903bd6ec4817fca7a718b770d6d6a509c7e522cbebb41bd26e48bfe009d0510
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

e903bd6ec4817fca7a718b770d6d6a509c7e522cbebb41bd26e48bfe009d0510

Threat Level: Known bad

The file soudneff.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

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-03-04 08:18

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-03-04 08:18

Reported

2025-03-04 08:23

Platform

win7-20240903-en

Max time kernel

297s

Max time network

296s

Command Line

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\pfgour\diowa.exe N/A

Identifies Wine through registry keys

defense_evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\soudneff.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine C:\ProgramData\pfgour\diowa.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\soudneff.exe N/A
N/A N/A C:\ProgramData\pfgour\diowa.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2620 wrote to memory of 1684 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\pfgour\diowa.exe
PID 2620 wrote to memory of 1684 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\pfgour\diowa.exe
PID 2620 wrote to memory of 1684 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\pfgour\diowa.exe
PID 2620 wrote to memory of 1684 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\pfgour\diowa.exe

Processes

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

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

C:\Windows\system32\taskeng.exe

taskeng.exe {4D4EDE3D-92A7-4BB0-86F1-C1FB8D87CFE9} S-1-5-21-3063565911-2056067323-3330884624-1000:KHBTHJFA\Admin:Interactive:[1]

C:\ProgramData\pfgour\diowa.exe

C:\ProgramData\pfgour\diowa.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 213.209.150.137:4000 towerbingobongoboom.com tcp
US 8.8.8.8:53 towerbingobongoboom.com udp
US 213.209.150.137:4000 towerbingobongoboom.com tcp
US 213.209.150.137:4000 towerbingobongoboom.com tcp

Files

memory/2168-0-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2168-1-0x0000000077730000-0x0000000077732000-memory.dmp

memory/2168-2-0x0000000000401000-0x0000000000403000-memory.dmp

memory/2168-4-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2168-6-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2168-7-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2168-8-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2168-9-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2168-10-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2168-11-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2168-12-0x0000000000400000-0x0000000000856000-memory.dmp

C:\ProgramData\pfgour\diowa.exe

MD5 efac52cc9304919d4f9e49c56bdbd484
SHA1 68e90fd0a473ba822bb4f708d718afcbbd660850
SHA256 e903bd6ec4817fca7a718b770d6d6a509c7e522cbebb41bd26e48bfe009d0510
SHA512 9185437c21c56772d3dd7172269b3569380b518e78c8cb9dcf947968476d4d79beb2aeb31da66d3736a2a0f3be88d3caf86d9ba79c59608aaca196c409466ada

memory/1684-15-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-16-0x0000000000400000-0x0000000000856000-memory.dmp

C:\Windows\Tasks\Test Task17.job

MD5 623f206b14ec44c6ffafafae8345f7ac
SHA1 044037579ed0a5d93caf929159f918126c06387f
SHA256 48f356bca1e1498054f1971758c05f68a6e2c33354c82750c3837685b7171358
SHA512 3ba76c0dc70e0e78c9db92bfc2cdafc18cedc66506fde95af3391743e94b228723c22a490a65aad2db454afa4789930af93d3c2deeb57089bc92212194bc08bf

memory/1684-18-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2168-19-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-20-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-21-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-22-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2168-23-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2168-24-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-25-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-26-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-27-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-28-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-30-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-31-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-32-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-33-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-34-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-35-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-36-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-37-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-38-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-39-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-40-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-41-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-42-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-43-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-44-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-45-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-46-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-47-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-48-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-49-0x0000000000400000-0x0000000000856000-memory.dmp

memory/1684-50-0x0000000000400000-0x0000000000856000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-03-04 08:18

Reported

2025-03-04 08:23

Platform

win10v2004-20250217-en

Max time kernel

290s

Max time network

250s

Command Line

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\ilsg\rfncjr.exe N/A

Identifies Wine through registry keys

defense_evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1294999112-580688058-1763548717-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\soudneff.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1294999112-580688058-1763548717-1000\Software\Wine C:\ProgramData\ilsg\rfncjr.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\soudneff.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\soudneff.exe N/A
N/A N/A C:\ProgramData\ilsg\rfncjr.exe N/A
N/A N/A C:\ProgramData\ilsg\rfncjr.exe N/A

Processes

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

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

C:\ProgramData\ilsg\rfncjr.exe

C:\ProgramData\ilsg\rfncjr.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
GB 2.18.27.82:443 www.bing.com tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 towerbingobongoboom.com udp
US 213.209.150.137:4000 towerbingobongoboom.com tcp
US 213.209.150.137:4000 towerbingobongoboom.com tcp
US 213.209.150.137:4000 towerbingobongoboom.com tcp

Files

memory/2936-0-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2936-1-0x00000000776E4000-0x00000000776E6000-memory.dmp

memory/2936-2-0x0000000000401000-0x0000000000403000-memory.dmp

memory/2936-3-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2936-6-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2936-7-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2936-8-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2936-9-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2936-10-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2936-11-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2936-12-0x0000000000400000-0x0000000000856000-memory.dmp

C:\ProgramData\ilsg\rfncjr.exe

MD5 efac52cc9304919d4f9e49c56bdbd484
SHA1 68e90fd0a473ba822bb4f708d718afcbbd660850
SHA256 e903bd6ec4817fca7a718b770d6d6a509c7e522cbebb41bd26e48bfe009d0510
SHA512 9185437c21c56772d3dd7172269b3569380b518e78c8cb9dcf947968476d4d79beb2aeb31da66d3736a2a0f3be88d3caf86d9ba79c59608aaca196c409466ada

memory/2844-15-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-16-0x0000000000400000-0x0000000000856000-memory.dmp

C:\Windows\Tasks\Test Task17.job

MD5 9001e7cd14726dc3e8d38999598f7081
SHA1 4b4a9113f2e9bdb6c362237d283e38fe6a5476a0
SHA256 6178eaefc3c83d4f47815e37f77660bfaa15f842cc7a95511868927fd3f00a44
SHA512 bef227496f056d71a7a3329c05a0d84f155e9bf42488d12cc3fbd0239e28a5efa649e7dddf76df291bbd90e39a574fddf2ef6197711eef55cbc7ddb9585ca5a0

memory/2844-18-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2936-19-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-20-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-21-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-22-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-24-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-23-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2936-25-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-27-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-28-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-29-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-30-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-31-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-32-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-33-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-34-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-35-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-36-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-37-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-38-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-39-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-40-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-41-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-42-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-43-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-44-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-45-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-46-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-47-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-48-0x0000000000400000-0x0000000000856000-memory.dmp

memory/2844-49-0x0000000000400000-0x0000000000856000-memory.dmp