systembc | 553dbdc0da9fac50f5ce3e8006e060ac0c6d8fef73d4942df4fa02202ecd5616

General

Target

f6f4770d6ef84140477aa0381f15155b.exe
Size

1.9MB
MD5

f6f4770d6ef84140477aa0381f15155b
SHA1

f6f79fa456963555884df0ccc5b0931b69e81333
SHA256

553dbdc0da9fac50f5ce3e8006e060ac0c6d8fef73d4942df4fa02202ecd5616
SHA512

4e92f906a5f5c308df35134cdd43414585e5401e61fecc7b4ebbc8358f8c6f50d07ea746695ce261654d8bd69eb1e6f575b159f9aa5367c08b003142188dc039

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:

f6f4770d6ef84140477aa0381f15155b.exef6f4770d6ef84140477aa0381f15155b.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	f6f4770d6ef84140477aa0381f15155b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f6f4770d6ef84140477aa0381f15155b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	f6f4770d6ef84140477aa0381f15155b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f6f4770d6ef84140477aa0381f15155b.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

f6f4770d6ef84140477aa0381f15155b.exef6f4770d6ef84140477aa0381f15155b.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	f6f4770d6ef84140477aa0381f15155b.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	f6f4770d6ef84140477aa0381f15155b.exe

Drops file in System32 directory 2 IoCs

Processes:

f6f4770d6ef84140477aa0381f15155b.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Roaming\Obsidium\{58C1303D-5AFA422D-9DA5029E-1552C40B}.Debug	f6f4770d6ef84140477aa0381f15155b.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\.obs32\{58C1303D-5AFA422D-9DA5029E-1552C40B}.Environment	f6f4770d6ef84140477aa0381f15155b.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

Processes:

f6f4770d6ef84140477aa0381f15155b.exef6f4770d6ef84140477aa0381f15155b.exe

pid	process
1532	f6f4770d6ef84140477aa0381f15155b.exe
1532	f6f4770d6ef84140477aa0381f15155b.exe
596	f6f4770d6ef84140477aa0381f15155b.exe
596	f6f4770d6ef84140477aa0381f15155b.exe

Drops file in Windows directory 2 IoCs

Processes:

f6f4770d6ef84140477aa0381f15155b.exe

description	ioc	process
File created	C:\Windows\Tasks\wow64.job	f6f4770d6ef84140477aa0381f15155b.exe
File opened for modification	C:\Windows\Tasks\wow64.job	f6f4770d6ef84140477aa0381f15155b.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

f6f4770d6ef84140477aa0381f15155b.exef6f4770d6ef84140477aa0381f15155b.exe

pid	process
1532	f6f4770d6ef84140477aa0381f15155b.exe
1532	f6f4770d6ef84140477aa0381f15155b.exe
596	f6f4770d6ef84140477aa0381f15155b.exe
596	f6f4770d6ef84140477aa0381f15155b.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

taskeng.exe

description	pid	process	target process
PID 1688 wrote to memory of 596	1688	taskeng.exe	f6f4770d6ef84140477aa0381f15155b.exe
PID 1688 wrote to memory of 596	1688	taskeng.exe	f6f4770d6ef84140477aa0381f15155b.exe
PID 1688 wrote to memory of 596	1688	taskeng.exe	f6f4770d6ef84140477aa0381f15155b.exe
PID 1688 wrote to memory of 596	1688	taskeng.exe	f6f4770d6ef84140477aa0381f15155b.exe
PID 1688 wrote to memory of 596	1688	taskeng.exe	f6f4770d6ef84140477aa0381f15155b.exe
PID 1688 wrote to memory of 596	1688	taskeng.exe	f6f4770d6ef84140477aa0381f15155b.exe
PID 1688 wrote to memory of 596	1688	taskeng.exe	f6f4770d6ef84140477aa0381f15155b.exe

C:\Users\Admin\AppData\Local\Temp\f6f4770d6ef84140477aa0381f15155b.exe
"C:\Users\Admin\AppData\Local\Temp\f6f4770d6ef84140477aa0381f15155b.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:1532

C:\Windows\system32\taskeng.exe
taskeng.exe {3E9D98F5-7791-4AEC-8B44-CCFB03A56DF7} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1688

C:\Users\Admin\AppData\Local\Temp\f6f4770d6ef84140477aa0381f15155b.exe
C:\Users\Admin\AppData\Local\Temp\f6f4770d6ef84140477aa0381f15155b.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:596

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

Replay Monitor

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Downloads

memory/596-69-0x0000000000400000-0x00000000007F6000-memory.dmp

Filesize
4.0MB

Download
memory/596-82-0x0000000000400000-0x00000000007F6000-memory.dmp

Filesize
4.0MB

Download
memory/596-80-0x0000000000400000-0x00000000007F6000-memory.dmp

Filesize
4.0MB

Download
memory/596-79-0x0000000000400000-0x00000000007F6000-memory.dmp

Filesize
4.0MB

Download
memory/596-78-0x0000000000340000-0x0000000000386000-memory.dmp

Filesize
280KB

Download
memory/596-77-0x0000000075680000-0x00000000757DC000-memory.dmp

Filesize
1.4MB

Download
memory/596-75-0x0000000076020000-0x0000000076067000-memory.dmp

Filesize
284KB

Download
memory/596-73-0x0000000074EC0000-0x0000000074F6C000-memory.dmp

Filesize
688KB

Download
memory/596-72-0x0000000075D20000-0x0000000075D55000-memory.dmp

Filesize
212KB

Download
memory/596-71-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1532-60-0x0000000074EC0000-0x0000000074F6C000-memory.dmp

Filesize
688KB

Download
memory/1532-68-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/1532-67-0x0000000000400000-0x00000000007F6000-memory.dmp

Filesize
4.0MB

Download
memory/1532-64-0x0000000075680000-0x00000000757DC000-memory.dmp

Filesize
1.4MB

Download
memory/1532-66-0x0000000000400000-0x00000000007F6000-memory.dmp

Filesize
4.0MB

Download
memory/1532-65-0x0000000000400000-0x00000000007F6000-memory.dmp

Filesize
4.0MB

Download
memory/1532-62-0x0000000076020000-0x0000000076067000-memory.dmp

Filesize
284KB

Download
memory/1532-55-0x0000000000330000-0x0000000000376000-memory.dmp

Filesize
280KB

Download
memory/1532-59-0x0000000075D20000-0x0000000075D55000-memory.dmp

Filesize
212KB

Download
memory/1532-58-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1532-57-0x0000000076071000-0x0000000076073000-memory.dmp

Filesize
8KB

Download
memory/1532-56-0x0000000000400000-0x00000000007F6000-memory.dmp

Filesize
4.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads