b065eaf7ed46a1f2c24eef8d062aa8c7dfd10fac1de147bd3d695fb9fe2974e9

Analysis

max time kernel
159s
max time network
170s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29-11-2022 15:40

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b065eaf7ed46a1f2c24eef8d062aa8c7dfd10fac1de147bd3d695fb9fe2974e9.xls
Size

196KB
MD5

2fc30ae79669e8513073d371e9c41cb6
SHA1

6971ad2e57e50cec8efce36f07218dca5cb498b8
SHA256

b065eaf7ed46a1f2c24eef8d062aa8c7dfd10fac1de147bd3d695fb9fe2974e9
SHA512

c21460ca13655a2c48373e639f63ce473f779c53b1bec69e6b20d1025c50674ab1804317d261b31da8ec5d20929c886fb19d05cad1b1e63599bf85444aedff73
SSDEEP

3072:7FMtWcIAu8BcWfiVBL2i6d958zXUQQnp7wyrTWVbrzQ7O6Tk9uu8JtXwD5kxGf:RMtWcI2WBMMXUQd8iAg

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	2240	5104	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2648	5104	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1056	5104	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

5104 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
5104	EXCEL.EXE
5104	EXCEL.EXE
5104	EXCEL.EXE
5104	EXCEL.EXE
5104	EXCEL.EXE
5104	EXCEL.EXE
5104	EXCEL.EXE
5104	EXCEL.EXE
5104	EXCEL.EXE
5104	EXCEL.EXE
5104	EXCEL.EXE
5104	EXCEL.EXE
5104	EXCEL.EXE
5104	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 5104 wrote to memory of 2240	5104	EXCEL.EXE	cmd.exe
PID 5104 wrote to memory of 2240	5104	EXCEL.EXE	cmd.exe
PID 5104 wrote to memory of 2648	5104	EXCEL.EXE	cmd.exe
PID 5104 wrote to memory of 2648	5104	EXCEL.EXE	cmd.exe
PID 5104 wrote to memory of 1056	5104	EXCEL.EXE	cmd.exe
PID 5104 wrote to memory of 1056	5104	EXCEL.EXE	cmd.exe
PID 2240 wrote to memory of 640	2240	cmd.exe	attrib.exe
PID 2240 wrote to memory of 640	2240	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

640 attrib.exe

pid	process
640	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\b065eaf7ed46a1f2c24eef8d062aa8c7dfd10fac1de147bd3d695fb9fe2974e9.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5104

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:2240

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:640

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:2648

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:1056

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/640-142-0x0000000000000000-mapping.dmp

Download
memory/1056-141-0x0000000000000000-mapping.dmp

Download
memory/2240-139-0x0000000000000000-mapping.dmp

Download
memory/2648-140-0x0000000000000000-mapping.dmp

Download
memory/5104-132-0x00007FFA96230000-0x00007FFA96240000-memory.dmp

Filesize
64KB

Download
memory/5104-133-0x00007FFA96230000-0x00007FFA96240000-memory.dmp

Filesize
64KB

Download
memory/5104-134-0x00007FFA96230000-0x00007FFA96240000-memory.dmp

Filesize
64KB

Download
memory/5104-135-0x00007FFA96230000-0x00007FFA96240000-memory.dmp

Filesize
64KB

Download
memory/5104-136-0x00007FFA96230000-0x00007FFA96240000-memory.dmp

Filesize
64KB

Download
memory/5104-137-0x00007FFA94040000-0x00007FFA94050000-memory.dmp

Filesize
64KB

Download
memory/5104-138-0x00007FFA94040000-0x00007FFA94050000-memory.dmp

Filesize
64KB

Download