Malware Analysis Report

2025-04-03 09:37

Sample ID 250227-dvmynasyew
Target 686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe
SHA256 686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80

Threat Level: Known bad

The file 686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.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)

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 behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-02-27 03:19

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2025-02-27 03:19

Reported

2025-02-27 03:22

Platform

win10v2004-20250217-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.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\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\ProgramData\lmpk\skdwwbl.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\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\ProgramData\lmpk\skdwwbl.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\ProgramData\lmpk\skdwwbl.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\lmpk\skdwwbl.exe N/A

Identifies Wine through registry keys

defense_evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\Software\Wine C:\ProgramData\lmpk\skdwwbl.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe N/A
N/A N/A C:\ProgramData\lmpk\skdwwbl.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\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.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\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\ProgramData\lmpk\skdwwbl.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe

"C:\Users\Admin\AppData\Local\Temp\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe"

C:\ProgramData\lmpk\skdwwbl.exe

C:\ProgramData\lmpk\skdwwbl.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
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 93.186.202.3:6195 towerbingobongoboom.com tcp

Files

memory/4892-0-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4892-1-0x00000000779B4000-0x00000000779B6000-memory.dmp

memory/4892-2-0x0000000000401000-0x0000000000403000-memory.dmp

memory/4892-3-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4892-6-0x0000000000400000-0x0000000000846000-memory.dmp

C:\ProgramData\lmpk\skdwwbl.exe

MD5 77c6d4944106ec80bb717043741b57da
SHA1 aa1550acb66847744e99ee1181d8a7c9035f1339
SHA256 686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80
SHA512 b2d7b47a95dafb732d65b7af2131ceb0b60c950c29697f4c07ff21381599558990fa03a9b8fc7dfe1d96787f6adce90b4b916c71cf2f4f32c4b070aae7fcd16a

memory/1936-9-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-10-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4892-11-0x0000000000400000-0x0000000000846000-memory.dmp

C:\Windows\Tasks\Test Task17.job

MD5 09e246aef925ea0c541a41e91d79af16
SHA1 3e4e0aaa667c1a45954edc6c499637c797b5df33
SHA256 db381c6287d2dd46faf9bb9a00945b8f2387d34f7adce4aae5afa9a8b686d877
SHA512 d7f46a3ba434af772e3c243138e84bddd839edfaba3ebe4e4de17bcde459c6f46f24fbb17c837a74e7876a7f89d98a623bf80ec0490befbde98409a2dd40771d

memory/4892-13-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4892-14-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-15-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-16-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-17-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4892-18-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-19-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4892-20-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-21-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4892-22-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-23-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4892-24-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-25-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4892-26-0x0000000000400000-0x0000000000846000-memory.dmp

memory/4892-27-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-28-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-29-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-30-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-31-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-32-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-33-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-34-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-35-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1936-36-0x0000000000400000-0x0000000000846000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2025-02-27 03:19

Reported

2025-02-27 03:22

Platform

win7-20241010-en

Max time kernel

145s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.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\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe N/A
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\ProgramData\xlaogcm\lbqk.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\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\ProgramData\xlaogcm\lbqk.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\ProgramData\xlaogcm\lbqk.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\xlaogcm\lbqk.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:\Users\Admin\AppData\Local\Temp\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe N/A
Key opened \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Wine C:\ProgramData\xlaogcm\lbqk.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe N/A
N/A N/A C:\ProgramData\xlaogcm\lbqk.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\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.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\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\ProgramData\xlaogcm\lbqk.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe N/A
N/A N/A C:\ProgramData\xlaogcm\lbqk.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2808 wrote to memory of 3040 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\xlaogcm\lbqk.exe
PID 2808 wrote to memory of 3040 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\xlaogcm\lbqk.exe
PID 2808 wrote to memory of 3040 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\xlaogcm\lbqk.exe
PID 2808 wrote to memory of 3040 N/A C:\Windows\system32\taskeng.exe C:\ProgramData\xlaogcm\lbqk.exe

Processes

C:\Users\Admin\AppData\Local\Temp\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe

"C:\Users\Admin\AppData\Local\Temp\686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80.exe"

C:\Windows\system32\taskeng.exe

taskeng.exe {AF00893E-F23A-4739-A02F-A2D70E22B463} S-1-5-21-2039016743-699959520-214465309-1000:PIDEURYY\Admin:Interactive:[1]

C:\ProgramData\xlaogcm\lbqk.exe

C:\ProgramData\xlaogcm\lbqk.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 93.186.202.3:5419 towerbingobongoboom.com tcp

Files

memory/1980-0-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1980-1-0x0000000077B00000-0x0000000077B02000-memory.dmp

memory/1980-2-0x0000000000401000-0x0000000000403000-memory.dmp

memory/1980-4-0x0000000000400000-0x0000000000846000-memory.dmp

C:\ProgramData\xlaogcm\lbqk.exe

MD5 77c6d4944106ec80bb717043741b57da
SHA1 aa1550acb66847744e99ee1181d8a7c9035f1339
SHA256 686990b05fbd39d1d4e0d4af60242a5b69c1dbfb218214a20bb4c67bde5c6f80
SHA512 b2d7b47a95dafb732d65b7af2131ceb0b60c950c29697f4c07ff21381599558990fa03a9b8fc7dfe1d96787f6adce90b4b916c71cf2f4f32c4b070aae7fcd16a

memory/3040-8-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1980-9-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-10-0x0000000000400000-0x0000000000846000-memory.dmp

C:\Windows\Tasks\Test Task17.job

MD5 d9be688acfbe6a34f42559142b9630f7
SHA1 c32ebfd3c877279b8720597d150c2301e027f497
SHA256 e919de7821b551d0fda4b9943b4eeb1617a9446b3e3a76337a0ea73046e73c11
SHA512 b8b982b40b7800ff743693c3ee0e2f0bfdee77c226e5c9c4c9406ed9656acf93851c1bffd83f50c360232dda3f37588096e488855aeca0118b60458bc4beef6d

memory/3040-12-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1980-13-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1980-14-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-15-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-16-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1980-17-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-18-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1980-19-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-20-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1980-21-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-22-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1980-23-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-24-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1980-25-0x0000000000400000-0x0000000000846000-memory.dmp

memory/1980-26-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-27-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-28-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-29-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-30-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-31-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-32-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-33-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-34-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-35-0x0000000000400000-0x0000000000846000-memory.dmp

memory/3040-36-0x0000000000400000-0x0000000000846000-memory.dmp