0a77c980c1b6ad85ffb3f1e8e814f96e09d5033d82dce7ca2062b992372c85e6

Analysis

max time kernel
192s
max time network
215s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 19:26

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

答辩16日第8组.xls
Size

102KB
MD5

93783f383be84ba8c73478fc0cc425c5
SHA1

0a14ba971d5d3d2db445f7c29b1660b8f70bcd1f
SHA256

566b22ef9e58ca6066a8d54895f2aad05caf3522f1d31320360118313a45b3d6
SHA512

ddf14ed1b7d1b88feb8ad82e939e03897ca787a56cc4fc11a77763eaa7e48fc58e09b6f0aee570f4985782c442244ad508b632977d5ebef6f9ed0d09cf20c7d1
SSDEEP

1536:XWWWSkv4ct4N54WVbrzlS7ITkR62lGM88wcJtXwRHM2M/MCUdL:6WVbrz47ITk9tjDJtXwC5kPdL

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 3 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

cmd.execmd.execmd.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	456	4272	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4236	4272	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3172	4272	cmd.exe	EXCEL.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:

EXCEL.EXE

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

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4272 EXCEL.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

Processes:

EXCEL.EXE

pid	process
4272	EXCEL.EXE
4272	EXCEL.EXE
4272	EXCEL.EXE
4272	EXCEL.EXE
4272	EXCEL.EXE
4272	EXCEL.EXE
4272	EXCEL.EXE
4272	EXCEL.EXE
4272	EXCEL.EXE
4272	EXCEL.EXE
4272	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4272 wrote to memory of 456	4272	EXCEL.EXE	cmd.exe
PID 4272 wrote to memory of 456	4272	EXCEL.EXE	cmd.exe
PID 4272 wrote to memory of 4236	4272	EXCEL.EXE	cmd.exe
PID 4272 wrote to memory of 4236	4272	EXCEL.EXE	cmd.exe
PID 4272 wrote to memory of 3172	4272	EXCEL.EXE	cmd.exe
PID 4272 wrote to memory of 3172	4272	EXCEL.EXE	cmd.exe
PID 456 wrote to memory of 1676	456	cmd.exe	attrib.exe
PID 456 wrote to memory of 1676	456	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

1676 attrib.exe

pid	process
1676	attrib.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\答辩16日第8组.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4272

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:456

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:1676

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
2⤵
- Process spawned unexpected child process
PID:4236

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
2⤵
- Process spawned unexpected child process
PID:3172

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\d7dd39538404459098a257824024b2d8 /t 3088 /p 4272
1⤵
PID:5044

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/456-139-0x0000000000000000-mapping.dmp

Download
memory/1676-142-0x0000000000000000-mapping.dmp

Download
memory/3172-141-0x0000000000000000-mapping.dmp

Download
memory/4236-140-0x0000000000000000-mapping.dmp

Download
memory/4272-135-0x00007FFB04130000-0x00007FFB04140000-memory.dmp

Filesize
64KB

Download
memory/4272-137-0x00007FFB01E50000-0x00007FFB01E60000-memory.dmp

Filesize
64KB

Download
memory/4272-138-0x00007FFB01E50000-0x00007FFB01E60000-memory.dmp

Filesize
64KB

Download
memory/4272-136-0x00007FFB04130000-0x00007FFB04140000-memory.dmp

Filesize
64KB

Download
memory/4272-132-0x00007FFB04130000-0x00007FFB04140000-memory.dmp

Filesize
64KB

Download
memory/4272-134-0x00007FFB04130000-0x00007FFB04140000-memory.dmp

Filesize
64KB

Download
memory/4272-133-0x00007FFB04130000-0x00007FFB04140000-memory.dmp

Filesize
64KB

Download
memory/4272-143-0x000002630682D000-0x000002630682F000-memory.dmp

Filesize
8KB

Download
memory/4272-144-0x000002630682D000-0x000002630682F000-memory.dmp

Filesize
8KB

Download