systembc | f50137e69eab731be6ac6e16fe5f5ce536d64b8e5d3786f7a68c6b4a7afc3940

Analysis

max time kernel
147s
max time network
151s
platform
windows7_x64
resource
win7-20250207-en
resource tags

arch:x64arch:x86image:win7-20250207-enlocale:en-usos:windows7-x64system
submitted
06/03/2025, 00:51

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General

Target

d521f17349128cc6339aecb7a5e41f91ab02d338e5c722cd809d96c3a1c64454.exe
Size

1.6MB
MD5

1dc908064451d5d79018241cea28bc2f
SHA1

f0d9a7d23603e9dd3974ab15400f5ad3938d657a
SHA256

d521f17349128cc6339aecb7a5e41f91ab02d338e5c722cd809d96c3a1c64454
SHA512

6f072459376181f7ddb211cf615731289706e7d90b7c81e306c6cd5c79311544d0b4be946791ae4fad3c2c034901bc0a2fd5b2a710844e3fe928a92d1cc0814f
SSDEEP

49152:Uq8Z+aOhmX72hf7OqockKkGYR7SGmUNmzKZg:sAaEhhyJcjkdNmeZg

Score

10^/10

systembc defense_evasion discovery trojan

Malware Config

Extracted

Family

systembc

towerbingobongoboom.com

62.60.226.86

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__	ueob.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	d521f17349128cc6339aecb7a5e41f91ab02d338e5c722cd809d96c3a1c64454.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	d521f17349128cc6339aecb7a5e41f91ab02d338e5c722cd809d96c3a1c64454.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	d521f17349128cc6339aecb7a5e41f91ab02d338e5c722cd809d96c3a1c64454.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	ueob.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ueob.exe

Executes dropped EXE 1 IoCs

pid	Process
2660	ueob.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-1-5-21-677481364-2238709445-1347953534-1000\Software\Wine	ueob.exe
Key opened	\REGISTRY\USER\S-1-5-21-677481364-2238709445-1347953534-1000\Software\Wine	d521f17349128cc6339aecb7a5e41f91ab02d338e5c722cd809d96c3a1c64454.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2740	d521f17349128cc6339aecb7a5e41f91ab02d338e5c722cd809d96c3a1c64454.exe
2660	ueob.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\Test Task17.job	d521f17349128cc6339aecb7a5e41f91ab02d338e5c722cd809d96c3a1c64454.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	d521f17349128cc6339aecb7a5e41f91ab02d338e5c722cd809d96c3a1c64454.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ueob.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2740	d521f17349128cc6339aecb7a5e41f91ab02d338e5c722cd809d96c3a1c64454.exe
2660	ueob.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 2660	1648	taskeng.exe	31
PID 1648 wrote to memory of 2660	1648	taskeng.exe	31
PID 1648 wrote to memory of 2660	1648	taskeng.exe	31
PID 1648 wrote to memory of 2660	1648	taskeng.exe	31

C:\Users\Admin\AppData\Local\Temp\d521f17349128cc6339aecb7a5e41f91ab02d338e5c722cd809d96c3a1c64454.exe
"C:\Users\Admin\AppData\Local\Temp\d521f17349128cc6339aecb7a5e41f91ab02d338e5c722cd809d96c3a1c64454.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- 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
PID:2740

C:\Windows\system32\taskeng.exe
taskeng.exe {2BD1E1E6-16F1-43D5-97DE-71485ABFE05B} S-1-5-21-677481364-2238709445-1347953534-1000:JXXXDSWS\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1648
- C:\ProgramData\fvoj\ueob.exe
  C:\ProgramData\fvoj\ueob.exe
  2⤵
  - 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:2660

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

C:\ProgramData\fvoj\ueob.exe

Filesize
1.6MB

MD5
1dc908064451d5d79018241cea28bc2f

SHA1
f0d9a7d23603e9dd3974ab15400f5ad3938d657a

SHA256
d521f17349128cc6339aecb7a5e41f91ab02d338e5c722cd809d96c3a1c64454

SHA512
6f072459376181f7ddb211cf615731289706e7d90b7c81e306c6cd5c79311544d0b4be946791ae4fad3c2c034901bc0a2fd5b2a710844e3fe928a92d1cc0814f

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

Filesize
212B

MD5
dc2bab69606410150c00fa0931960a4e

SHA1
9a7ae1eda06d87a712fdabde4a7e92bf38e20bae

SHA256
025457678db09f1c55c3c9a94ad43891fca4b75dd97e03316c4822824e5ee6fc

SHA512
72516cb393d855ed8e77ba23f46a0a5267ce2a545de9f7c2f52c1d80f30e8ca690fdd0c90deabc46334c2c09a579658d7fe74d15b70b1ab6ea43837b05806bed

Download Submit
memory/2660-19-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-31-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-38-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-37-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-36-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-35-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-34-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-12-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-13-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-33-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-15-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-32-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-17-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-18-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-30-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-20-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-28-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-22-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-26-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2660-24-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2740-7-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2740-21-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2740-27-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2740-4-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2740-0-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2740-1-0x0000000076F90000-0x0000000076F92000-memory.dmp

Filesize
8KB

Download
memory/2740-23-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2740-25-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2740-2-0x0000000000401000-0x0000000000403000-memory.dmp

Filesize
8KB

Download
memory/2740-9-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2740-8-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2740-16-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/2740-6-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download