fd2f10aa7c96d648e82ca3d76dfd1015a62bf921f3c1296746af4b4b45d54e9f

Analysis

max time kernel
123s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-en-20220112
submitted
25-02-2022 00:20

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General

Target

756-54-0x00000000003A0000-0x00000000003A5000-memory.dll
Size

20KB
MD5

b65d27126755d954d6f94d3d2cb51abf
SHA1

2612ba9487de61f56c888b6fa2cdb0e9c14fd800
SHA256

fd2f10aa7c96d648e82ca3d76dfd1015a62bf921f3c1296746af4b4b45d54e9f
SHA512

ceb0961a6e86d764a847ab62a5ffdadd52dbaeff041a379044015d08d84fc7a30ac040a6b7fbad8def2defffd8de93a81cb2fac83e60135133dc176e509a144e

Score

10^/10

Malware Config

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 3476 created 3856 3476 WerFault.exe rundll32.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2640 3856 WerFault.exe rundll32.exe

description	pid	process	target process
PID 3476 created 3856	3476	WerFault.exe	rundll32.exe

pid	pid_target	process	target process
2640	3856	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 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

2640 WerFault.exe
2640 WerFault.exe

pid	process
2640	WerFault.exe
2640	WerFault.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WerFault.exe

description	pid	process	target process
PID 3476 wrote to memory of 3856	3476	WerFault.exe	rundll32.exe
PID 3476 wrote to memory of 3856	3476	WerFault.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\756-54-0x00000000003A0000-0x00000000003A5000-memory.dll,#1
1⤵
PID:3856

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 3856 -s 224
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:2640

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 440 -p 3856 -ip 3856
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3476

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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