31475717735f9aee20def2a4044b42a52cb92e8cf885b92a042099a273688135

Analysis

max time kernel
119s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
05-05-2022 15:37

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General

Target

Challenge_FIles/Employee_W2_Form.docx
Size

12KB
MD5

45e7d6562bfddb816d45649dd667abde
SHA1

00087e46ec0ef6225de59868fd016bd9dd77fa3c
SHA256

679bbe0c50754853978a3a583505ebb99bce720cf26a6aaf8be06cd879701ff1
SHA512

0567873b42eece93787da4f4c3b72ecb0d952450d8eb59b354a5f91ed95395a2662171e05cdcf4a829fdbd0b5cbcca97701fef9b96b1ad0d8728922bbd0288fa

Score

1^/10

Malware Config

Signatures

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:

WINWORD.EXE

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

NTFS ADS 1 IoCs

Processes:

WINWORD.EXE

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\Challenge_FIles\mhtml:arsenal.30cm.tw:1212\word.html!x-usc:arsenal.30cm.tw:1212\word.html	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

1656 WINWORD.EXE
1656 WINWORD.EXE
Suspicious use of SetWindowsHookEx 7 IoCs

Processes:

WINWORD.EXE

pid process

1656 WINWORD.EXE
1656 WINWORD.EXE
1656 WINWORD.EXE
1656 WINWORD.EXE
1656 WINWORD.EXE
1656 WINWORD.EXE
1656 WINWORD.EXE

pid	process
1656	WINWORD.EXE
1656	WINWORD.EXE

pid	process
1656	WINWORD.EXE
1656	WINWORD.EXE
1656	WINWORD.EXE
1656	WINWORD.EXE
1656	WINWORD.EXE
1656	WINWORD.EXE
1656	WINWORD.EXE

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\Challenge_FIles\Employee_W2_Form.docx" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1656

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/1656-130-0x00007FF9D7DD0000-0x00007FF9D7DE0000-memory.dmp

Filesize
64KB

Download
memory/1656-131-0x00007FF9D7DD0000-0x00007FF9D7DE0000-memory.dmp

Filesize
64KB

Download
memory/1656-132-0x00007FF9D7DD0000-0x00007FF9D7DE0000-memory.dmp

Filesize
64KB

Download
memory/1656-133-0x00007FF9D7DD0000-0x00007FF9D7DE0000-memory.dmp

Filesize
64KB

Download
memory/1656-134-0x00007FF9D7DD0000-0x00007FF9D7DE0000-memory.dmp

Filesize
64KB

Download
memory/1656-135-0x00007FF9D5BF0000-0x00007FF9D5C00000-memory.dmp

Filesize
64KB

Download
memory/1656-136-0x00007FF9D5BF0000-0x00007FF9D5C00000-memory.dmp

Filesize
64KB

Download
memory/1656-139-0x00007FF9D7DD0000-0x00007FF9D7DE0000-memory.dmp

Filesize
64KB

Download
memory/1656-138-0x00007FF9D7DD0000-0x00007FF9D7DE0000-memory.dmp

Filesize
64KB

Download
memory/1656-140-0x00007FF9D7DD0000-0x00007FF9D7DE0000-memory.dmp

Filesize
64KB

Download
memory/1656-141-0x00007FF9D7DD0000-0x00007FF9D7DE0000-memory.dmp

Filesize
64KB

Download