systembc | 134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7

General

Target

134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7.exe
Size

319KB
MD5

03a38f91d32612992a31ea130aa780db
SHA1

74f0b8e1e5e3d91069ed061856cbc7306b5c852c
SHA256

134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7
SHA512

78cdbafd83805efaf9c23e9f8ff0113fe379cdcd975a09162fa64c010028e6d3b404cd0e25ec3fb769ec3dfef23e2aed510ce0baf0c9391d6fa968dcb3c62848

Score

10^/10

systembc trojan

Malware Config

Extracted

Family

systembc

C2

185.209.30.180:4001

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 3888 created 3692 3888 WerFault.exe 134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7.exe
SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc

description	pid	process	target process
PID 3888 created 3692	3888	WerFault.exe	134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7.exe

Drops file in Windows directory 6 IoCs

Processes:

134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7.exesvchost.exeTiWorker.exeWerFault.exe

description	ioc	process
File created	C:\Windows\Tasks\wow64.job	134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7.exe
File opened for modification	C:\Windows\Tasks\wow64.job	134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7.exe
File opened for modification	C:\Windows\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\DeliveryOptimization\State\keyValueLKG.dat	svchost.exe
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.exe
File opened for modification	C:\Windows\WinSxS\pending.xml	TiWorker.exe
File created	C:\Windows\AppCompat\Programs\Amcache.hve.tmp	WerFault.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3868 3692 WerFault.exe 134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7.exe

pid	pid_target	process	target process
3868	3692	WerFault.exe	134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

MusNotifyIcon.exe

description	ioc	process
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotifyIcon.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotifyIcon.exe

Modifies data under HKEY_USERS 50 IoCs

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthID = "2"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LinkLocalConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DownloadMode_BackCompat = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DODownloadMode = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCacheHostBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadCount = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "2.702715"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Settings	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyGroupBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\KVFileExpirationTime = "132893193643284296"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\Geo_EndpointFullUri = "https://geo.prod.do.dsp.mp.microsoft.com/geo"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CacheSizeBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkCnt = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkUsageBps = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "0.941420"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4120"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLanBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\GroupConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadPendingCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyInternetBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCdnBytes = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\GeoVersion_EndpointFullUri = "https://geover.prod.do.dsp.mp.microsoft.com/geoversion"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\LANConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownlinkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UplinkUsageBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\FrDownloadRatePct = "90"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\BkDownloadRatePct = "45"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyLanBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CDNConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4352"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PriorityDownloadCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\NormalDownloadPendingCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrCnt = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\InternetConnectionCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadRatePct = "100"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthlyUploadRestriction = "0"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\CPUpct = "4.545626"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyInternetBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLinkLocalBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MemoryUsageKB = "4364"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\PeerInfoCount = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\SwarmCount = "0"	svchost.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

TiWorker.exe

description	pid	process
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe
Token: SeRestorePrivilege	3728	TiWorker.exe
Token: SeSecurityPrivilege	3728	TiWorker.exe
Token: SeBackupPrivilege	3728	TiWorker.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WerFault.exe

description	pid	process	target process
PID 3888 wrote to memory of 3692	3888	WerFault.exe	134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7.exe
PID 3888 wrote to memory of 3692	3888	WerFault.exe	134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7.exe

C:\Users\Admin\AppData\Local\Temp\134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7.exe
"C:\Users\Admin\AppData\Local\Temp\134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7.exe"
1⤵
- Drops file in Windows directory
PID:3692
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3692 -s 948
  2⤵
  - Drops file in Windows directory
  - Program crash
  PID:3868

C:\Users\Admin\AppData\Local\Temp\134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7.exe
C:\Users\Admin\AppData\Local\Temp\134aec21b9a203def04fecc854e19e5f59bc129c0a42bf8c10aa5af161077bb7.exe start
1⤵
PID:3796

C:\Windows\system32\MusNotifyIcon.exe
%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
1⤵
- Checks processor information in registry
PID:3024

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
PID:952

C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:3728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3692 -ip 3692
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3888

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3692-130-0x0000000000702000-0x0000000000712000-memory.dmp

Filesize
64KB

Download
memory/3692-131-0x0000000000702000-0x0000000000712000-memory.dmp

Filesize
64KB

Download
memory/3692-132-0x0000000000030000-0x0000000000035000-memory.dmp

Filesize
20KB

Download
memory/3692-133-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/3796-134-0x0000000000634000-0x0000000000644000-memory.dmp

Filesize
64KB

Download
memory/3796-136-0x0000000000020000-0x0000000000025000-memory.dmp

Filesize
20KB

Download
memory/3796-135-0x0000000000634000-0x0000000000644000-memory.dmp

Filesize
64KB

Download
memory/3796-137-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads