0ec1767f6c731f96841c915a47a7995cc716db31f397aa11fb7ba85485389dd7

Resubmissions

14-03-2023 10:08

230314-l6fbyseg54 8

14-03-2023 10:02

230314-l2766sgg51 10

Analysis

max time kernel
145s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
14-03-2023 10:08

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General

Target

form.doc
Size

533.3MB
MD5

3c34e353986f6a94f20e081132736c43
SHA1

116c23c50f372567952281ba78caba51862707d1
SHA256

1f7ad39b9afd918270f59f92763d127334c09b61a18ba71443e7e4db64f066a3
SHA512

3957cc11d142732f759196f5cd392f2a58674911bd0ab567c39dfca43a6a9ea273690b41675804b89788dfc150ae00f41df2d1e7c4bb6433e61b7c58169bfea3
SSDEEP

6144:1620tqUx3Xu+7ZkRIDNGi9a0Va5UAClo:1620tqm3+I2ezcz5U3lo

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3604 1240 WerFault.exe

pid	pid_target	process	target process
3604	1240	WerFault.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:

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

Script User-Agent 7 IoCs

Uses user-agent string associated with script host/environment.

Processes:

description	flow	ioc
HTTP User-Agent header	39	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	41	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	44	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	46	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	48	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	50	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	52	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

1236 WINWORD.EXE
1236 WINWORD.EXE
Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

WINWORD.EXE

pid process

1236 WINWORD.EXE
1236 WINWORD.EXE
1236 WINWORD.EXE
1236 WINWORD.EXE
1236 WINWORD.EXE
1236 WINWORD.EXE
1236 WINWORD.EXE
1236 WINWORD.EXE

pid	process
1236	WINWORD.EXE
1236	WINWORD.EXE

pid	process
1236	WINWORD.EXE
1236	WINWORD.EXE
1236	WINWORD.EXE
1236	WINWORD.EXE
1236	WINWORD.EXE
1236	WINWORD.EXE
1236	WINWORD.EXE
1236	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\form.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1236

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 504 -p 1240 -ip 1240
1⤵
PID:4496

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1240 -s 844
1⤵
- Program crash
PID:3604

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/1236-133-0x00007FFC819F0000-0x00007FFC81A00000-memory.dmp

Filesize
64KB

Download
memory/1236-134-0x00007FFC819F0000-0x00007FFC81A00000-memory.dmp

Filesize
64KB

Download
memory/1236-135-0x00007FFC819F0000-0x00007FFC81A00000-memory.dmp

Filesize
64KB

Download
memory/1236-136-0x00007FFC819F0000-0x00007FFC81A00000-memory.dmp

Filesize
64KB

Download
memory/1236-137-0x00007FFC819F0000-0x00007FFC81A00000-memory.dmp

Filesize
64KB

Download
memory/1236-138-0x00007FFC7F130000-0x00007FFC7F140000-memory.dmp

Filesize
64KB

Download
memory/1236-139-0x00007FFC7F130000-0x00007FFC7F140000-memory.dmp

Filesize
64KB

Download