systembc | 1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
02/03/2025, 12:18

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General

Target
73636685f823d103c54b30bc457c7f0d.exe
Size 457KB
Sample250302-pg3mqsvlw5
SHA256 1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c
MD5 73636685f823d103c54b30bc457c7f0d
SHA1 597dba03dce00cf6d30b082c80c8f9108ae90ccf
SHA512 183d4901a72afc044ef13c3a2cc21f93aefd954665f981c7886afc9019ca7d46f76b3459789dff5721542f2f9e7bbf606d7df68328e772e4c66dc789964f43f7
SSDEEP 6144:P2ib1rFTRH6sf1kroyfIWjpTX335ilMSp01Hj6fGMWPsEY15sFBc9TT6N7AOs+OK:+ib1rFTRH6serb/p93j6fGMWP1N72h
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

systembc defense_evasion discovery trojan

Malware Config

Extracted

Family

systembc

towerbingobongoboom.com
213.209.150.137

Attributes

dns
5.132.191.104

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Systembc family
systembc

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundrive.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	hpams.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
26	3752	Gxtuum.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	rundrive.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundrive.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	hpams.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	hpams.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3181990009-820930284-137514597-1000\Control Panel\International\Geo\Nation	73636685f823d103c54b30bc457c7f0d.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3181990009-820930284-137514597-1000\Control Panel\International\Geo\Nation	Gxtuum.exe

Executes dropped EXE 6 IoCs

pid	Process
3752	Gxtuum.exe
1920	Gxtuum.exe
1048	rundrive.exe
920	Gxtuum.exe
1824	hpams.exe
1208	Gxtuum.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3181990009-820930284-137514597-1000\Software\Wine	rundrive.exe
Key opened	\REGISTRY\USER\S-1-5-21-3181990009-820930284-137514597-1000\Software\Wine	hpams.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1048	rundrive.exe
1824	hpams.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\Gxtuum.job	73636685f823d103c54b30bc457c7f0d.exe
File created	C:\Windows\Tasks\Test Task17.job	rundrive.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	73636685f823d103c54b30bc457c7f0d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Gxtuum.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundrive.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hpams.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1048	rundrive.exe
1048	rundrive.exe
1824	hpams.exe
1824	hpams.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3232	73636685f823d103c54b30bc457c7f0d.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3232 wrote to memory of 3752	3232	73636685f823d103c54b30bc457c7f0d.exe	88
PID 3232 wrote to memory of 3752	3232	73636685f823d103c54b30bc457c7f0d.exe	88
PID 3232 wrote to memory of 3752	3232	73636685f823d103c54b30bc457c7f0d.exe	88
PID 3752 wrote to memory of 1048	3752	Gxtuum.exe	96
PID 3752 wrote to memory of 1048	3752	Gxtuum.exe	96
PID 3752 wrote to memory of 1048	3752	Gxtuum.exe	96

C:\Users\Admin\AppData\Local\Temp\73636685f823d103c54b30bc457c7f0d.exe
"C:\Users\Admin\AppData\Local\Temp\73636685f823d103c54b30bc457c7f0d.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3232
- C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe
  "C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe"
  2⤵
  - Downloads MZ/PE file
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3752
- - C:\Users\Admin\AppData\Roaming\10000550100\rundrive.exe
    "C:\Users\Admin\AppData\Roaming\10000550100\rundrive.exe"
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Identifies Wine through registry keys
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:1048

C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe
C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe
1⤵
- Executes dropped EXE
PID:1920

C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe
C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe
1⤵
- Executes dropped EXE
PID:920

C:\ProgramData\qxkkec\hpams.exe
C:\ProgramData\qxkkec\hpams.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:1824

C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe
C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe
1⤵
- Executes dropped EXE
PID:1208

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Gxtuum.exe

Path C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe
Size 457KB
SHA256 1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c
MD5 73636685f823d103c54b30bc457c7f0d
SHA1 597dba03dce00cf6d30b082c80c8f9108ae90ccf
SHA512 183d4901a72afc044ef13c3a2cc21f93aefd954665f981c7886afc9019ca7d46f76b3459789dff5721542f2f9e7bbf606d7df68328e772e4c66dc789964f43f7
SSDEEP 6144:P2ib1rFTRH6sf1kroyfIWjpTX335ilMSp01Hj6fGMWPsEY15sFBc9TT6N7AOs+OK:+ib1rFTRH6serb/p93j6fGMWP1N72h
MD5 SHA1 SHA512 SSDEEP

Submit Download

rundrive.exe

Path C:\Users\Admin\AppData\Roaming\10000550100\rundrive.exe
Size 1.7MB
SHA256 833610e95cc965e70096620e0adaa8917963df9f9ec56e00af1ff331161a7971
MD5 9218e5cad03c752f237ed87a9e52def4
SHA1 0ccddab0d87776d78c613c6e7a6f3bce93ffc3d3
SHA512 4ca94c23bf82bee5ff5a7f7e318e99c084f7403cdc2e23276087f55620f9e9f988a7a6816fedcd2f853a21fe645c3cc89f7b2f6f05f792b549fd698fd14f5cb3
SSDEEP 49152:NWiPyNzLHax6WxKPQx1GyGe4/xU7VNT1xMJ1NxjnW8EtVO:NhGW4OOCbhGQK
MD5 SHA1 SHA512 SSDEEP

Submit Download

Test Task17.job

Path C:\Windows\Tasks\Test Task17.job
Size 236B
SHA256 658bc6360a14a2b541dec549e61cc1e71f56520811e5eda6eff430661192925a
MD5 3b42008da160ae400e9e1802034fd7f3
SHA1 1700215588eaa86ef26ac93e477fe0b1d8adba85
SHA512 1a80212b85e4c256aae83564305c72218b76897575185b533fca73cf68ce09b85a1cf48ed28a1591745da19fb022a6b74b81700986cc12418086b6525c034e4c
MD5 SHA1 SHA512

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memory/1048-39-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1048-41-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1048-31-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1048-32-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1048-33-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1048-30-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1048-29-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1048-26-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1824-42-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1824-37-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1824-43-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1824-44-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1824-45-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1824-46-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1824-48-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1824-49-0x0000000000400000-0x0000000000856000-memory.dmp

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memory/1824-50-0x0000000000400000-0x0000000000856000-memory.dmp

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