735f4e4a46c441adc84d100d11eeeeca0de9ff4e1b50f3f957652e64f6b0e411

Analysis

max time kernel
153s
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
24-11-2022 14:03

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General

Target

K1-3K2-2ؿбļ/02.ļ/01./2.�.xls
Size

105KB
MD5

1654c5d2d91f05db425702a4a0212e0e
SHA1

d72769ee73be6cf375bfcdff1b325e39ce1be7f8
SHA256

0efbdf69acc7efefa80b0078c847814749873d4739efb7020001cb4521985e09
SHA512

7d33f8a116c3956b539e06b23d86b58a782375e0791cbe8b5ee6103b3fd12cf9af0d79cbc55a11b6531b8ef2af38dfc75ee02e0aca541d7c70da1e43c7b7a372
SSDEEP

3072:HQQn6v7yZmspH7+7alMisPI4ukoRWGNwcWVbrziKm7ITkPXyww33XjUJtXw8cMgw:wQn6v7yZmspH7+7alMisPI4ukoRWGNwy

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	4404	4716	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4576	4716	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3028	4716	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

4716 EXCEL.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

Processes:

EXCEL.EXE

pid	process
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE
4716	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4716 wrote to memory of 4404	4716	EXCEL.EXE	cmd.exe
PID 4716 wrote to memory of 4404	4716	EXCEL.EXE	cmd.exe
PID 4716 wrote to memory of 4576	4716	EXCEL.EXE	cmd.exe
PID 4716 wrote to memory of 4576	4716	EXCEL.EXE	cmd.exe
PID 4716 wrote to memory of 3028	4716	EXCEL.EXE	cmd.exe
PID 4716 wrote to memory of 3028	4716	EXCEL.EXE	cmd.exe
PID 4404 wrote to memory of 1192	4404	cmd.exe	attrib.exe
PID 4404 wrote to memory of 1192	4404	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

1192 attrib.exe

pid	process
1192	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\K1-3K2-2ؿбļ\02.ļ\01.\2.�.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4716

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:4404

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:1192

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:4576

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:3028

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

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Downloads

memory/1192-142-0x0000000000000000-mapping.dmp

Download
memory/3028-141-0x0000000000000000-mapping.dmp

Download
memory/4404-139-0x0000000000000000-mapping.dmp

Download
memory/4576-140-0x0000000000000000-mapping.dmp

Download
memory/4716-132-0x00007FF941D50000-0x00007FF941D60000-memory.dmp

Filesize
64KB

Download
memory/4716-133-0x00007FF941D50000-0x00007FF941D60000-memory.dmp

Filesize
64KB

Download
memory/4716-134-0x00007FF941D50000-0x00007FF941D60000-memory.dmp

Filesize
64KB

Download
memory/4716-135-0x00007FF941D50000-0x00007FF941D60000-memory.dmp

Filesize
64KB

Download
memory/4716-136-0x00007FF941D50000-0x00007FF941D60000-memory.dmp

Filesize
64KB

Download
memory/4716-137-0x00007FF93F700000-0x00007FF93F710000-memory.dmp

Filesize
64KB

Download
memory/4716-138-0x00007FF93F700000-0x00007FF93F710000-memory.dmp

Filesize
64KB

Download