44ba5f629c731604580c863afa7e84c87e0ebf431294fa4646c83f8820d2ffa5

General

Target

44ba5f629c731604580c863afa7e84c87e0ebf431294fa4646c83f8820d2ffa5.dll
Size

480KB
MD5

46ff7a914be72003199e051cab2b2c0d
SHA1

6b1785ae3d2415cd12eedbe4d232a2887d5aa7fb
SHA256

44ba5f629c731604580c863afa7e84c87e0ebf431294fa4646c83f8820d2ffa5
SHA512

3c7ce281805ded31fbdd74f66f8daefb534e7b87d03014580446416c962651fa292b44c75518841eb478b90656f8242f1f01c3779f164e38f87c11d692029fea

Score

10^/10

Malware Config

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 1888 created 3364 1888 WerFault.exe rundll32.exe

description	pid	process	target process
PID 1888 created 3364	1888	WerFault.exe	rundll32.exe

Drops file in Windows directory 8 IoCs

Processes:

svchost.exeTiWorker.exe

description	ioc	process
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	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 opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1992 3364 WerFault.exe rundll32.exe

pid	pid_target	process	target process
1992	3364	WerFault.exe	rundll32.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

WerFault.exe

pid process

1992 WerFault.exe
1992 WerFault.exe

pid	process
1992	WerFault.exe
1992	WerFault.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

WerFault.exesvchost.exeTiWorker.exe

description	pid	process
Token: SeRestorePrivilege	1992	WerFault.exe
Token: SeBackupPrivilege	1992	WerFault.exe
Token: SeShutdownPrivilege	2196	svchost.exe
Token: SeCreatePagefilePrivilege	2196	svchost.exe
Token: SeShutdownPrivilege	2196	svchost.exe
Token: SeCreatePagefilePrivilege	2196	svchost.exe
Token: SeShutdownPrivilege	2196	svchost.exe
Token: SeCreatePagefilePrivilege	2196	svchost.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe
Token: SeSecurityPrivilege	4308	TiWorker.exe
Token: SeBackupPrivilege	4308	TiWorker.exe
Token: SeRestorePrivilege	4308	TiWorker.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

rundll32.exeWerFault.exe

description	pid	process	target process
PID 3832 wrote to memory of 3364	3832	rundll32.exe	rundll32.exe
PID 3832 wrote to memory of 3364	3832	rundll32.exe	rundll32.exe
PID 3832 wrote to memory of 3364	3832	rundll32.exe	rundll32.exe
PID 1888 wrote to memory of 3364	1888	WerFault.exe	rundll32.exe
PID 1888 wrote to memory of 3364	1888	WerFault.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\44ba5f629c731604580c863afa7e84c87e0ebf431294fa4646c83f8820d2ffa5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3832
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\44ba5f629c731604580c863afa7e84c87e0ebf431294fa4646c83f8820d2ffa5.dll,#1
  2⤵
  PID:3364
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3364 -s 560
    3⤵
    - Program crash
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3364 -ip 3364
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:1888

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:2196

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:4308

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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/2196-130-0x000002620A390000-0x000002620A3A0000-memory.dmp

Filesize
64KB

Download
memory/2196-131-0x000002620AC70000-0x000002620AC80000-memory.dmp

Filesize
64KB

Download
memory/2196-132-0x000002620D360000-0x000002620D364000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads