1e6b5d1de8ba51cbf5d94600d07923b165e2e92569d653c56152bbb81f726f39

Resubmissions

01-03-2022 08:14

220301-j4ypeaafcr 10

01-03-2022 07:35

220301-jevapaghd6 10

Analysis

max time kernel
113s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
01-03-2022 07:35

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Report Analysis Logs

General

Target

sample.exe
Size

141KB
MD5

1c2af6c5e1b8b87189b5da7bd3cefe30
SHA1

6881acb4f1401f0db02bbebe82e2381a0b7c447d
SHA256

cf0705a3e4f3690e28184eb019a4940e7291ce5b3d52747ff80b72e90922a89b
SHA512

1f391111cbeb12f892c272076111a8317b98c9eda4bbf12eefb7a47bcc1a327b43310739a301718b700dc2ce28339b00533f2c9eda1f06ffff21f30d69ce6362

Score

10^/10

Malware Config

Signatures

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 3184 created 4440 3184 WerFault.exe sample.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4216 4440 WerFault.exe sample.exe

description	pid	process	target process
PID 3184 created 4440	3184	WerFault.exe	sample.exe

pid	pid_target	process	target process
4216	4440	WerFault.exe	sample.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

4216 WerFault.exe
4216 WerFault.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

sample.exe

description pid process

Token: SeDebugPrivilege 4440 sample.exe

pid	process
4216	WerFault.exe
4216	WerFault.exe

description	pid	process
Token: SeDebugPrivilege	4440	sample.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WerFault.exe

description	pid	process	target process
PID 3184 wrote to memory of 4440	3184	WerFault.exe	sample.exe
PID 3184 wrote to memory of 4440	3184	WerFault.exe	sample.exe

C:\Users\Admin\AppData\Local\Temp\sample.exe
"C:\Users\Admin\AppData\Local\Temp\sample.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4440

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 4440 -s 944
2⤵
- Program crash
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
PID:4216

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 408 -p 4440 -ip 4440
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:3184

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/4440-130-0x00000208F5640000-0x00000208F566A000-memory.dmp

Filesize
168KB

Download
memory/4440-131-0x00007FF8F1E13000-0x00007FF8F1E15000-memory.dmp

Filesize
8KB

Download
memory/4440-132-0x00000208F75E0000-0x00000208F75E2000-memory.dmp

Filesize
8KB

Download
memory/4440-133-0x00000208F5C20000-0x00000208F5C21000-memory.dmp

Filesize
4KB

Download