systembc | 9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968

General

Target

9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968.exe
Size

263KB
MD5

a01b0bc4b44afddf64029a86f41784dd
SHA1

ac559d7084e3fb42766dd71a413143ec6c29a56c
SHA256

9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968
SHA512

bb543579cef5003eda5c9a9a7715cc5bcda25ea2491155bfd942317c77573b7736f749e84bf51b04f0fb0328a2db875f893d85604aeebb67bf03f8d4e61848d7

Score

10^/10

systembc persistence trojan

Malware Config

Extracted

Family

systembc

C2

5.39.221.47:4001

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 4092 created 2800 4092 WerFault.exe 9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968.exe
SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc
Sets service image path in registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

description	pid	process	target process
PID 4092 created 2800	4092	WerFault.exe	9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968.exe

Drops file in Windows directory 3 IoCs

Processes:

9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968.exeWerFault.exe

description	ioc	process
File opened for modification	C:\Windows\Tasks\wow64.job	9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968.exe
File created	C:\Windows\AppCompat\Programs\Amcache.hve.tmp	WerFault.exe
File created	C:\Windows\Tasks\wow64.job	9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3124 2800 WerFault.exe 9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968.exe

pid	pid_target	process	target process
3124	2800	WerFault.exe	9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968.exe

Checks processor information in registry 2 TTPs 3 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 opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
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

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

Modifies data under HKEY_USERS 41 IoCs

Processes:

WaaSMedicAgent.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	WaaSMedicAgent.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	WaaSMedicAgent.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

WerFault.exe

pid process

3124 WerFault.exe
3124 WerFault.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

WerFault.exe

description pid process

Token: SeRestorePrivilege 3124 WerFault.exe
Token: SeBackupPrivilege 3124 WerFault.exe
Token: SeBackupPrivilege 3124 WerFault.exe

pid	process
3124	WerFault.exe
3124	WerFault.exe

description	pid	process
Token: SeRestorePrivilege	3124	WerFault.exe
Token: SeBackupPrivilege	3124	WerFault.exe
Token: SeBackupPrivilege	3124	WerFault.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WerFault.exe

description	pid	process	target process
PID 4092 wrote to memory of 2800	4092	WerFault.exe	9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968.exe
PID 4092 wrote to memory of 2800	4092	WerFault.exe	9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968.exe

C:\Users\Admin\AppData\Local\Temp\9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968.exe
"C:\Users\Admin\AppData\Local\Temp\9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968.exe"
1⤵
- Drops file in Windows directory
PID:2800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2800 -s 68
  2⤵
  - Drops file in Windows directory
  - Program crash
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3124

C:\Users\Admin\AppData\Local\Temp\9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968.exe
C:\Users\Admin\AppData\Local\Temp\9b4820342b301b20cac729a24a9c3215b968221b5a47c0640a455f6cde72a968.exe start
1⤵
PID:312

C:\Windows\System32\WaaSMedicAgent.exe
C:\Windows\System32\WaaSMedicAgent.exe c5347ffd2c52d8924ed51df51ea097d2 Lvb1gL9tqkCSSd897/dWMA.0.1.0.0.0
1⤵
- Modifies data under HKEY_USERS
PID:2992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2800 -ip 2800
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:4092

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/312-136-0x0000000000400000-0x0000000000449000-memory.dmp

Filesize
292KB

Download
memory/2800-134-0x0000000000590000-0x0000000000595000-memory.dmp

Filesize
20KB

Download
memory/2800-133-0x0000000000580000-0x0000000000588000-memory.dmp

Filesize
32KB

Download
memory/2800-135-0x0000000000400000-0x0000000000449000-memory.dmp

Filesize
292KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads