systembc | 4f8fd85bcb3dbb5d82d3194a2ac9742a8f0696685b69d425b1384d29e2260bf3

General

Target

c28c72944827aecc6e64211f91d082cd.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:

c28c72944827aecc6e64211f91d082cd.exec28c72944827aecc6e64211f91d082cd.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	c28c72944827aecc6e64211f91d082cd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c28c72944827aecc6e64211f91d082cd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	c28c72944827aecc6e64211f91d082cd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c28c72944827aecc6e64211f91d082cd.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

c28c72944827aecc6e64211f91d082cd.exec28c72944827aecc6e64211f91d082cd.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	c28c72944827aecc6e64211f91d082cd.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	c28c72944827aecc6e64211f91d082cd.exe

Drops file in System32 directory 2 IoCs

Processes:

c28c72944827aecc6e64211f91d082cd.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Obsidium\{58C1303D-5AFA422D-9DA5029E-1552C40B}.Debug	c28c72944827aecc6e64211f91d082cd.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\.obs32\{58C1303D-5AFA422D-9DA5029E-1552C40B}.Environment	c28c72944827aecc6e64211f91d082cd.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

Processes:

c28c72944827aecc6e64211f91d082cd.exec28c72944827aecc6e64211f91d082cd.exe

pid	process
1584	c28c72944827aecc6e64211f91d082cd.exe
1584	c28c72944827aecc6e64211f91d082cd.exe
1140	c28c72944827aecc6e64211f91d082cd.exe
1140	c28c72944827aecc6e64211f91d082cd.exe

Drops file in Windows directory 2 IoCs

Processes:

c28c72944827aecc6e64211f91d082cd.exe

description	ioc	process
File created	C:\Windows\Tasks\wow64.job	c28c72944827aecc6e64211f91d082cd.exe
File opened for modification	C:\Windows\Tasks\wow64.job	c28c72944827aecc6e64211f91d082cd.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

c28c72944827aecc6e64211f91d082cd.exec28c72944827aecc6e64211f91d082cd.exe

pid	process
1584	c28c72944827aecc6e64211f91d082cd.exe
1584	c28c72944827aecc6e64211f91d082cd.exe
1140	c28c72944827aecc6e64211f91d082cd.exe
1140	c28c72944827aecc6e64211f91d082cd.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 1956 wrote to memory of 1140	1956	taskeng.exe	c28c72944827aecc6e64211f91d082cd.exe
PID 1956 wrote to memory of 1140	1956	taskeng.exe	c28c72944827aecc6e64211f91d082cd.exe
PID 1956 wrote to memory of 1140	1956	taskeng.exe	c28c72944827aecc6e64211f91d082cd.exe
PID 1956 wrote to memory of 1140	1956	taskeng.exe	c28c72944827aecc6e64211f91d082cd.exe
PID 1956 wrote to memory of 1140	1956	taskeng.exe	c28c72944827aecc6e64211f91d082cd.exe
PID 1956 wrote to memory of 1140	1956	taskeng.exe	c28c72944827aecc6e64211f91d082cd.exe
PID 1956 wrote to memory of 1140	1956	taskeng.exe	c28c72944827aecc6e64211f91d082cd.exe

C:\Users\Admin\AppData\Local\Temp\c28c72944827aecc6e64211f91d082cd.exe
"C:\Users\Admin\AppData\Local\Temp\c28c72944827aecc6e64211f91d082cd.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:\Windows\system32\taskeng.exe
taskeng.exe {F6E6334B-1286-4419-A2C7-8595D9BFDF1A} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1956

C:\Users\Admin\AppData\Local\Temp\c28c72944827aecc6e64211f91d082cd.exe
C:\Users\Admin\AppData\Local\Temp\c28c72944827aecc6e64211f91d082cd.exe start
2⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:1140

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/1140-69-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/1140-81-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/1140-82-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/1140-80-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/1140-79-0x0000000000260000-0x00000000002A6000-memory.dmp

Filesize
280KB

Download
memory/1140-77-0x0000000077420000-0x000000007757C000-memory.dmp

Filesize
1.4MB

Download
memory/1140-72-0x0000000075E70000-0x0000000075EA5000-memory.dmp

Filesize
212KB

Download
memory/1140-75-0x0000000075980000-0x00000000759C7000-memory.dmp

Filesize
284KB

Download
memory/1140-73-0x0000000077370000-0x000000007741C000-memory.dmp

Filesize
688KB

Download
memory/1140-71-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1584-60-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1584-68-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/1584-67-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/1584-66-0x0000000077420000-0x000000007757C000-memory.dmp

Filesize
1.4MB

Download
memory/1584-64-0x0000000075980000-0x00000000759C7000-memory.dmp

Filesize
284KB

Download
memory/1584-62-0x0000000077370000-0x000000007741C000-memory.dmp

Filesize
688KB

Download
memory/1584-61-0x0000000075E70000-0x0000000075EA5000-memory.dmp

Filesize
212KB

Download
memory/1584-55-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/1584-59-0x0000000076511000-0x0000000076513000-memory.dmp

Filesize
8KB

Download
memory/1584-57-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/1584-58-0x0000000000400000-0x0000000000803000-memory.dmp

Filesize
4.0MB

Download
memory/1584-56-0x00000000002A0000-0x00000000002E6000-memory.dmp

Filesize
280KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads