51636185f050c3bd7831ae68d4ebe8c46192cd64112a0762cd8ea92cc4d35894

General

Target
92e6d1acf256d3f269493a7737073277.exe
Size 3.3MB
Sample220206-thx6vsbecl
SHA256 51636185f050c3bd7831ae68d4ebe8c46192cd64112a0762cd8ea92cc4d35894
MD5 92e6d1acf256d3f269493a7737073277
SHA1 05c58732ca084aedc71dc39e9d3cb3cb45c1172c
SHA512 3738a684ee2f22d64ac0d3e2ac0115b53f0548a4c4202701ff045405d6e4c873602a3c34bc45d7bb33b721c98bf3bf5f81ed5f7eb6c35dbc215ccf0e0cf87fff
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 2404 created 4952	2404	WerFault.exe	80

Drops file in Windows directory 6 IoCs

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4448	4952	WerFault.exe	80

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

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

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

pid	Process
4448	WerFault.exe
4448	WerFault.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeRestorePrivilege	4448	WerFault.exe
Token: SeBackupPrivilege	4448	WerFault.exe
Token: SeShutdownPrivilege	848	svchost.exe
Token: SeCreatePagefilePrivilege	848	svchost.exe
Token: SeShutdownPrivilege	848	svchost.exe
Token: SeCreatePagefilePrivilege	848	svchost.exe
Token: SeShutdownPrivilege	848	svchost.exe
Token: SeCreatePagefilePrivilege	848	svchost.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 4952	2404	WerFault.exe	80
PID 2404 wrote to memory of 4952	2404	WerFault.exe	80

C:\Users\Admin\AppData\Local\Temp\92e6d1acf256d3f269493a7737073277.exe
"C:\Users\Admin\AppData\Local\Temp\92e6d1acf256d3f269493a7737073277.exe"
1⤵
PID:4952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4952 -s 360
  2⤵
  - Program crash
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4952 -ip 4952
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:2404

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:848

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/848-413-0x00000261BE390000-0x00000261BE3A0000-memory.dmp

Download

memory/848-420-0x00000261C1010000-0x00000261C1014000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads