4c5012e09502fe970287af43437a911ea116959eb1cc345428c29c2460c66f94

Analysis

max time kernel
167s
max time network
221s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
24/11/2022, 11:18

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
4c5012e09502fe970287af43437a911ea116959eb1cc345428c29c2460c66f94.xls
Size 117KB
Sample221124-nemcasad67
SHA256 4c5012e09502fe970287af43437a911ea116959eb1cc345428c29c2460c66f94
MD5 24e671ce84223a3906fcc0929acc9661
SHA1 2f9b2a679333367cc2a71c07eee9086848167bb1
SHA512 bb5db75c0b3f2c7342e9e349c71964aaa7e4bb119501a80b007661ac9d03bd33c053709e9f61ba575582f0f7910bbec074b260a216f9769a941d1769c7474194
SSDEEP 3072:bZl6Nc7yRzs1H75wkZUgsQ6NqTBun5o8RDDVWVbrzQCITk9Ej4X1qiQi5:9l6Nc7yRzs1H75wkZUgsQ6NqTBun5oYw
MD5 SHA1 SHA512 SSDEEP

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.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4392	4668	cmd.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1784	4668	cmd.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5080	4668	cmd.exe	82

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

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

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

NTFS ADS 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\B9495E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4668	EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

pid	Process
4668	EXCEL.EXE
4668	EXCEL.EXE
4668	EXCEL.EXE
4668	EXCEL.EXE
4668	EXCEL.EXE
4668	EXCEL.EXE
4668	EXCEL.EXE
4668	EXCEL.EXE
4668	EXCEL.EXE
4668	EXCEL.EXE
4668	EXCEL.EXE
4668	EXCEL.EXE
4668	EXCEL.EXE
4668	EXCEL.EXE
4668	EXCEL.EXE
4668	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4668 wrote to memory of 4392	4668	EXCEL.EXE	86
PID 4668 wrote to memory of 4392	4668	EXCEL.EXE	86
PID 4668 wrote to memory of 1784	4668	EXCEL.EXE	88
PID 4668 wrote to memory of 1784	4668	EXCEL.EXE	88
PID 4668 wrote to memory of 5080	4668	EXCEL.EXE	90
PID 4668 wrote to memory of 5080	4668	EXCEL.EXE	90
PID 4392 wrote to memory of 1560	4392	cmd.exe	92
PID 4392 wrote to memory of 1560	4392	cmd.exe	92

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1560	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\4c5012e09502fe970287af43437a911ea116959eb1cc345428c29c2460c66f94.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4668
- 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:4392
- - C:\Windows\system32\attrib.exe
    attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
    3⤵
    - Views/modifies file attributes
    PID:1560
- 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:1784
- 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:5080

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\78d1adc87d984f8c8511b20fcf1c98be /t 964 /p 4668
1⤵
PID:1456

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/4668-138-0x00007FFA3ECC0000-0x00007FFA3ECD0000-memory.dmp

Download

memory/4668-136-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Download

memory/4668-137-0x00007FFA3ECC0000-0x00007FFA3ECD0000-memory.dmp

Download

memory/4668-132-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Download

memory/4668-135-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Download

memory/4668-134-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Download

memory/4668-133-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Download

memory/4668-144-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Download

memory/4668-146-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Download

memory/4668-145-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Download

memory/4668-147-0x00007FFA41590000-0x00007FFA415A0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads