systembc | 74bc8cc794e98d78ac8e4d6eac70cec70e4c8b1359e53e48f653cac84bafdae0

Resubmissions

18-11-2021 19:27

211118-x6fhhaach8 10

14-11-2021 07:31

211114-jcdj6agaf5 10

Analysis

max time kernel
118s
max time network
126s
platform
windows11_x64
resource
win11
submitted
18-11-2021 19:27

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General

Target

1d2d5950861d191f0cf126bf80e1857e.exe
Size

156KB
MD5

1d2d5950861d191f0cf126bf80e1857e
SHA1

d7161ac371c18a87023ce37036bcd25d09d7baa4
SHA256

74bc8cc794e98d78ac8e4d6eac70cec70e4c8b1359e53e48f653cac84bafdae0
SHA512

d189722b83816fcf20bea216e9da1832d44fffe52d5d7c06564f1505d8ccfc15f1cbe106260a14f4a8858eeba047d519a3e46d6e87cef3ffe630c2d1cb42cc63

Score

10^/10

systembc trojan

Malware Config

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 1652 created 4340 1652 WerFault.exe 1d2d5950861d191f0cf126bf80e1857e.exe
SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1896 4340 WerFault.exe 1d2d5950861d191f0cf126bf80e1857e.exe

description	pid	process	target process
PID 1652 created 4340	1652	WerFault.exe	1d2d5950861d191f0cf126bf80e1857e.exe

pid	pid_target	process	target process
1896	4340	WerFault.exe	1d2d5950861d191f0cf126bf80e1857e.exe

Checks processor information in registry 2 TTPs 7 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

WerFault.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Platform Specific Field 1	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Update Revision	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WerFault.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

WerFault.exe

pid process

1896 WerFault.exe
1896 WerFault.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 1896 WerFault.exe
Token: SeBackupPrivilege 1896 WerFault.exe

pid	process
1896	WerFault.exe
1896	WerFault.exe

description	pid	process
Token: SeRestorePrivilege	1896	WerFault.exe
Token: SeBackupPrivilege	1896	WerFault.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WerFault.exe

description	pid	process	target process
PID 1652 wrote to memory of 4340	1652	WerFault.exe	1d2d5950861d191f0cf126bf80e1857e.exe
PID 1652 wrote to memory of 4340	1652	WerFault.exe	1d2d5950861d191f0cf126bf80e1857e.exe

C:\Users\Admin\AppData\Local\Temp\1d2d5950861d191f0cf126bf80e1857e.exe
"C:\Users\Admin\AppData\Local\Temp\1d2d5950861d191f0cf126bf80e1857e.exe"
1⤵
PID:4340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4340 -s 304
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4340 -ip 4340
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:1652

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4340-146-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4340-147-0x0000000002110000-0x0000000002115000-memory.dmp

Filesize
20KB

Download