31475717735f9aee20def2a4044b42a52cb92e8cf885b92a042099a273688135

Analysis

max time kernel
148s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
05-05-2022 15:37

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General

Target

Challenge_FIles/income_tax_and_benefit_return_2021.docx
Size

23KB
MD5

55998cb43459159a5ed4511f00ff3fc8
SHA1

9bec2182cc5b41fe8783bb7ab6e577bac5c19f04
SHA256

d0e1f97dbe2d0af9342e64d460527b088d85f96d38b1d1d4aa610c0987dca745
SHA512

8f04951f9efb5acdad0a625d9f63154089d552fe4281ca53a759cc0a0468b8d9c76af863e34ed6e00802225a4408bcda1110a6efce30357e6173973ea5bf7838

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 opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	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:http:\hidusi.com\e8c76295a5f9acb7\side.html!x-usc:http:\hidusi.com\e8c76295a5f9acb7\side.html	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

4012 WINWORD.EXE
4012 WINWORD.EXE
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

WINWORD.EXE

description pid process

Token: SeAuditPrivilege 4012 WINWORD.EXE

description	pid	process
Token: SeAuditPrivilege	4012	WINWORD.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

WINWORD.EXE

pid	process
4012	WINWORD.EXE
4012	WINWORD.EXE
4012	WINWORD.EXE
4012	WINWORD.EXE
4012	WINWORD.EXE
4012	WINWORD.EXE
4012	WINWORD.EXE
4012	WINWORD.EXE
4012	WINWORD.EXE
4012	WINWORD.EXE
4012	WINWORD.EXE
4012	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\income_tax_and_benefit_return_2021.docx" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4012

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/4012-130-0x00007FF843BD0000-0x00007FF843BE0000-memory.dmp

Filesize
64KB

Download
memory/4012-131-0x00007FF843BD0000-0x00007FF843BE0000-memory.dmp

Filesize
64KB

Download
memory/4012-132-0x00007FF843BD0000-0x00007FF843BE0000-memory.dmp

Filesize
64KB

Download
memory/4012-133-0x00007FF843BD0000-0x00007FF843BE0000-memory.dmp

Filesize
64KB

Download
memory/4012-134-0x00007FF843BD0000-0x00007FF843BE0000-memory.dmp

Filesize
64KB

Download
memory/4012-135-0x00007FF8419E0000-0x00007FF8419F0000-memory.dmp

Filesize
64KB

Download
memory/4012-136-0x00007FF8419E0000-0x00007FF8419F0000-memory.dmp

Filesize
64KB

Download