Malware Analysis Report

2025-04-03 09:37

Sample ID 250227-cnes2a1sg1
Target 0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe
SHA256 0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f
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

0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f

Threat Level: Known bad

The file 0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.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

Identifies Wine through registry keys

Checks BIOS information in registry

Suspicious use of NtSetInformationThreadHideFromDebugger

Drops file in Windows directory

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-02-27 02:13

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-27 02:13

Reported

2025-02-27 02:15

Platform

win7-20241023-en

Max time kernel

142s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.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\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\ProgramData\guks\sumg.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\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\ProgramData\guks\sumg.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\ProgramData\guks\sumg.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\guks\sumg.exe N/A

Identifies Wine through registry keys

defense_evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Wine C:\ProgramData\guks\sumg.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe N/A
N/A N/A C:\ProgramData\guks\sumg.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\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.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\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\ProgramData\guks\sumg.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe N/A
N/A N/A C:\ProgramData\guks\sumg.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2676 wrote to memory of 2740 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\guks\sumg.exe
PID 2676 wrote to memory of 2740 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\guks\sumg.exe
PID 2676 wrote to memory of 2740 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\guks\sumg.exe
PID 2676 wrote to memory of 2740 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\guks\sumg.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe

"C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {1FBAB864-0BC8-453C-873B-F20671E243B5} S-1-5-21-1163522206-1469769407-485553996-1000:PJCSDMRP\Admin:Interactive:[1]

C:\ProgramData\guks\sumg.exe

C:\ProgramData\guks\sumg.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/1888-0-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1888-1-0x0000000077870000-0x0000000077872000-memory.dmp

memory/1888-2-0x0000000000401000-0x0000000000403000-memory.dmp

memory/1888-4-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1888-6-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1888-7-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1888-8-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1888-9-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1888-10-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1888-11-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1888-12-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1888-13-0x0000000000400000-0x0000000000846000-memory.dmp

C:\ProgramData\guks\sumg.exe

MD5 22b7fa9d7ece61a0e0a7a0e9b130e311
SHA1 00329bc46fab8e69da98e11894e7249fc4b5199f
SHA256 0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f
SHA512 cbc289aaf8a12863fc5d27443daea89e90045805b110eb2a4eabbfa2afb185651355dcffcb9a8188801786e2a07aa7198d31aba8d3bc4c2f8bcfea66033260b9

memory/2740-16-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2740-17-0x0000000000400000-0x0000000000846000-memory.dmp

C:\Windows\Tasks\Test Task17.job

MD5 1b68229d20d5888b142d797f71e10c5b
SHA1 fb2f757ddf4aab79c13409a2e589262a48842cb5
SHA256 dda4acf64fbdeb327d65d0d3264eba6c96a44cf717c6c52c8557885b3e04d906
SHA512 d6a3e0b792105fa90c05c2b1ba993711a7456a8593782009a8f069a8f155aba21059c5058338b4fdc85a7a1470c9d6b6e116eda37d069ea19a2f779a8512004a

memory/2740-19-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2740-20-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2740-21-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1888-22-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2740-24-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2740-25-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2740-26-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2740-27-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2740-28-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2740-29-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2740-30-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2740-32-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2740-31-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2740-33-0x0000000000400000-0x0000000000846000-memory.dmp

memory/2740-34-0x0000000000400000-0x0000000000846000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-27 02:13

Reported

2025-02-27 02:15

Platform

win10v2004-20250217-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.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\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\ProgramData\dpejbgw\kklosto.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\ProgramData\dpejbgw\kklosto.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\ProgramData\dpejbgw\kklosto.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\dpejbgw\kklosto.exe N/A

Identifies Wine through registry keys

defense_evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-250031470-1197856012-2659781506-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-250031470-1197856012-2659781506-1000\Software\Wine C:\ProgramData\dpejbgw\kklosto.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe N/A
N/A N/A C:\ProgramData\dpejbgw\kklosto.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\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.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\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\ProgramData\dpejbgw\kklosto.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe

"C:\Users\Admin\AppData\Local\Temp\0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f.exe"

C:\ProgramData\dpejbgw\kklosto.exe

C:\ProgramData\dpejbgw\kklosto.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 150.171.27.10:443 g.bing.com tcp
US 150.171.27.10:443 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 150.171.27.10:443 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
DE 93.186.202.3:4000 towerbingobongoboom.com tcp
DE 93.186.202.3:5418 towerbingobongoboom.com tcp
US 8.8.8.8:53 udp

Files

memory/4936-0-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4936-1-0x0000000077764000-0x0000000077766000-memory.dmp

memory/4936-2-0x0000000000401000-0x0000000000403000-memory.dmp

memory/4936-3-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4936-6-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4936-7-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4936-8-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4936-9-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4936-10-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4936-11-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4936-12-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4936-13-0x0000000000400000-0x0000000000846000-memory.dmp

C:\ProgramData\dpejbgw\kklosto.exe

MD5 22b7fa9d7ece61a0e0a7a0e9b130e311
SHA1 00329bc46fab8e69da98e11894e7249fc4b5199f
SHA256 0acada86bfe4cbdc97544e147207bcee377948415acb32223fe6a69716591c8f
SHA512 cbc289aaf8a12863fc5d27443daea89e90045805b110eb2a4eabbfa2afb185651355dcffcb9a8188801786e2a07aa7198d31aba8d3bc4c2f8bcfea66033260b9

memory/4348-16-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4348-17-0x0000000000400000-0x0000000000846000-memory.dmp

C:\Windows\Tasks\Test Task17.job

MD5 e92223852b1d50649a931104f0995cdd
SHA1 2e822bcdac42f9e3be9f82e340f5c91b9a31c886
SHA256 5179227ee81defcfaebb26a36ed00de9488d71ded5151f79e52c5425bc28058e
SHA512 d2cb286786e02358ae0041a04f0ee59009e0ef9b192de583735c17e39a1aa73acc21403762b4960450784ddec8d9ce2ff5442c5bd1e6b8492158f1c5cc639211

memory/4936-19-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4348-21-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4348-22-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4348-24-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4348-25-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4348-26-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4348-27-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4348-28-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4348-29-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4348-30-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4348-31-0x0000000000400000-0x0000000000846000-memory.dmp