systembc | 4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3

General

Target

4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
Size

2.0MB
MD5

c28c72944827aecc6e64211f91d082cd
SHA1

478e292f63cacdc9d43e095ce5ef7a3accb68cde
SHA256

4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3
SHA512

d314b1b5ae22e8b75bb541adaba41f2f8d78bef3ee9274bb09336bc31a7ced83d9331525ebe519a02aebe6f7934ce85dd41fce1ca28cbdfa0bb7e123336573a7

Score

10^/10

systembc evasion trojan

Malware Config

Signatures

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

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

Processes:

4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe

Drops file in System32 directory 2 IoCs

Processes:

4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Obsidium\{58C1303D-5AFA422D-9DA5029E-1552C40B}.Debug	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\.obs32\{58C1303D-5AFA422D-9DA5029E-1552C40B}.Environment	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

Processes:

4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe

pid	process
1584	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
1584	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
2196	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
2196	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe

Drops file in Windows directory 2 IoCs

Processes:

4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe

description	ioc	process
File created	C:\Windows\Tasks\wow64.job	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
File opened for modification	C:\Windows\Tasks\wow64.job	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe

pid	process
1584	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
1584	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
1584	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
1584	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
2196	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
2196	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
2196	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
2196	4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe

C:\Users\Admin\AppData\Local\Temp\4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
"C:\Users\Admin\AppData\Local\Temp\4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe"
1⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1584

C:\Users\Admin\AppData\Local\Temp\4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe
C:\Users\Admin\AppData\Local\Temp\4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3.exe start
1⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:2196

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1584-115-0x00000000008B0000-0x000000000095E000-memory.dmp

Filesize
696KB

Download
memory/1584-116-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/1584-117-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/1584-118-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/1584-119-0x00000000001E0000-0x00000000001E1000-memory.dmp

Filesize
4KB

Download
memory/1584-120-0x0000000074120000-0x00000000742E2000-memory.dmp

Filesize
1.8MB

Download
memory/1584-121-0x00000000750F0000-0x00000000751E1000-memory.dmp

Filesize
964KB

Download
memory/1584-122-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/1584-123-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/1584-124-0x00000000773B0000-0x000000007753E000-memory.dmp

Filesize
1.6MB

Download
memory/2196-125-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/2196-126-0x00000000001E0000-0x00000000001E1000-memory.dmp

Filesize
4KB

Download
memory/2196-127-0x0000000000960000-0x00000000009A6000-memory.dmp

Filesize
280KB

Download
memory/2196-128-0x0000000074120000-0x00000000742E2000-memory.dmp

Filesize
1.8MB

Download
memory/2196-130-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/2196-129-0x00000000750F0000-0x00000000751E1000-memory.dmp

Filesize
964KB

Download
memory/2196-131-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/2196-133-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/2196-134-0x00000000773B0000-0x000000007753E000-memory.dmp

Filesize
1.6MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads