systembc | f50137e69eab731be6ac6e16fe5f5ce536d64b8e5d3786f7a68c6b4a7afc3940

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2025, 00:51

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General

Target

1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c.exe
Size

457KB
MD5

73636685f823d103c54b30bc457c7f0d
SHA1

597dba03dce00cf6d30b082c80c8f9108ae90ccf
SHA256

1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c
SHA512

183d4901a72afc044ef13c3a2cc21f93aefd954665f981c7886afc9019ca7d46f76b3459789dff5721542f2f9e7bbf606d7df68328e772e4c66dc789964f43f7
SSDEEP

6144:P2ib1rFTRH6sf1kroyfIWjpTX335ilMSp01Hj6fGMWPsEY15sFBc9TT6N7AOs+OK:+ib1rFTRH6serb/p93j6fGMWP1N72h

Score

10^/10

systembc defense_evasion discovery trojan

Malware Config

Extracted

Family

systembc

towerbingobongoboom.com

62.60.226.86

�ai^��c��9�q|&)��Õv.

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__	vertualiziren.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ermh.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
27	464	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\VideoBiosVersion	ermh.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	vertualiziren.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	vertualiziren.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	ermh.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-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation	1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation	Gxtuum.exe

Executes dropped EXE 3 IoCs

pid	Process
464	Gxtuum.exe
2840	vertualiziren.exe
3028	ermh.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-1-5-21-1874072718-2205492803-118941907-1000\Software\Wine	vertualiziren.exe
Key opened	\REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Software\Wine	ermh.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2840	vertualiziren.exe
3028	ermh.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\Gxtuum.job	1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c.exe
File created	C:\Windows\Tasks\Test Task17.job	vertualiziren.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	1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Gxtuum.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vertualiziren.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ermh.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2840	vertualiziren.exe
2840	vertualiziren.exe
3028	ermh.exe
3028	ermh.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1240	1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1240 wrote to memory of 464	1240	1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c.exe	87
PID 1240 wrote to memory of 464	1240	1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c.exe	87
PID 1240 wrote to memory of 464	1240	1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c.exe	87
PID 464 wrote to memory of 2840	464	Gxtuum.exe	92
PID 464 wrote to memory of 2840	464	Gxtuum.exe	92
PID 464 wrote to memory of 2840	464	Gxtuum.exe	92

C:\Users\Admin\AppData\Local\Temp\1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c.exe
"C:\Users\Admin\AppData\Local\Temp\1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c.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:1240
- 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:464
- - C:\Users\Admin\AppData\Roaming\10000770100\vertualiziren.exe
    "C:\Users\Admin\AppData\Roaming\10000770100\vertualiziren.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:2840

C:\ProgramData\tjdkln\ermh.exe
C:\ProgramData\tjdkln\ermh.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:3028

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\a58456755d\Gxtuum.exe

Filesize
457KB

MD5
73636685f823d103c54b30bc457c7f0d

SHA1
597dba03dce00cf6d30b082c80c8f9108ae90ccf

SHA256
1edc123e5a8ea5ce814e2759ee38453404d4af72a3577b0af55e8d99fa38ef1c

SHA512
183d4901a72afc044ef13c3a2cc21f93aefd954665f981c7886afc9019ca7d46f76b3459789dff5721542f2f9e7bbf606d7df68328e772e4c66dc789964f43f7

Download Submit
C:\Users\Admin\AppData\Roaming\10000770100\vertualiziren.exe

Filesize
1.6MB

MD5
1dc908064451d5d79018241cea28bc2f

SHA1
f0d9a7d23603e9dd3974ab15400f5ad3938d657a

SHA256
d521f17349128cc6339aecb7a5e41f91ab02d338e5c722cd809d96c3a1c64454

SHA512
6f072459376181f7ddb211cf615731289706e7d90b7c81e306c6cd5c79311544d0b4be946791ae4fad3c2c034901bc0a2fd5b2a710844e3fe928a92d1cc0814f

Download Submit
C:\Windows\Tasks\Test Task17.job

Filesize
234B

MD5
e28cdaad92fc263cef7f0db464eddce6

SHA1
a602433ff5456cc62c2e318ca1387afc32814d57

SHA256
7044e6c29a3b9101569631d080f5374ea5a68c2df16d46f66dd2b3202e3f17b5

SHA512
85876fe2685f3923b95182bb25f3b3f1f73c34450193ccae65b85653278ef0c7d9c5a0763e96c7e7107005ee8155e47753b6304b9607f747f1bde36d1fbafb67

Download Submit
memory/2840-33-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2840-51-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2840-28-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2840-31-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2840-32-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2840-45-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2840-36-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2840-27-0x0000000000401000-0x0000000000403000-memory.dmp

Filesize
8KB

Download
memory/2840-26-0x0000000077AE4000-0x0000000077AE6000-memory.dmp

Filesize
8KB

Download
memory/2840-40-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2840-49-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2840-47-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2840-43-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2840-24-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-44-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-46-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-41-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-48-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-42-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-50-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-38-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-52-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-53-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-54-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-55-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-56-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-57-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-58-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3028-59-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download