07f8e9808c4389c587231adc10c758dcb030f304ef022697b3cf1cc4099a106e

Analysis

max time kernel
157s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
13-12-2022 19:13

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General

Target

d5c0e0e7c51dcc4f7e1f3fb255406981.xls
Size

173KB
MD5

d5c0e0e7c51dcc4f7e1f3fb255406981
SHA1

b4326d1ca03beb5b0c5b94ff530e6d59d40e9ff3
SHA256

07f8e9808c4389c587231adc10c758dcb030f304ef022697b3cf1cc4099a106e
SHA512

3116ed7ec140006342bfb11089ea866a9c14476740b46d67a05412aafc691b4c02ae0fda8d82805512f655d2a9bbb97bd5402a46737e3a54aeb869f61ef8562c
SSDEEP

3072:4yumOmCbXsOglgAQ37RKctOfkjl54tfRTc:CfA

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	1516	1732	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	32	1732	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	428	1732	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

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\F6285E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1732 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\F6285E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 17 IoCs

Processes:

EXCEL.EXE

pid	process
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE
1732	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 1732 wrote to memory of 1516	1732	EXCEL.EXE	cmd.exe
PID 1732 wrote to memory of 1516	1732	EXCEL.EXE	cmd.exe
PID 1732 wrote to memory of 32	1732	EXCEL.EXE	cmd.exe
PID 1732 wrote to memory of 32	1732	EXCEL.EXE	cmd.exe
PID 1732 wrote to memory of 428	1732	EXCEL.EXE	cmd.exe
PID 1732 wrote to memory of 428	1732	EXCEL.EXE	cmd.exe
PID 1516 wrote to memory of 5080	1516	cmd.exe	attrib.exe
PID 1516 wrote to memory of 5080	1516	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

5080 attrib.exe

pid	process
5080	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\d5c0e0e7c51dcc4f7e1f3fb255406981.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:1732

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:1516

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:5080

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:32

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:428

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/32-140-0x0000000000000000-mapping.dmp

Download
memory/428-141-0x0000000000000000-mapping.dmp

Download
memory/1516-139-0x0000000000000000-mapping.dmp

Download
memory/1732-132-0x00007FF87EF90000-0x00007FF87EFA0000-memory.dmp

Filesize
64KB

Download
memory/1732-133-0x00007FF87EF90000-0x00007FF87EFA0000-memory.dmp

Filesize
64KB

Download
memory/1732-134-0x00007FF87EF90000-0x00007FF87EFA0000-memory.dmp

Filesize
64KB

Download
memory/1732-135-0x00007FF87EF90000-0x00007FF87EFA0000-memory.dmp

Filesize
64KB

Download
memory/1732-136-0x00007FF87EF90000-0x00007FF87EFA0000-memory.dmp

Filesize
64KB

Download
memory/1732-137-0x00007FF87CE00000-0x00007FF87CE10000-memory.dmp

Filesize
64KB

Download
memory/1732-138-0x00007FF87CE00000-0x00007FF87CE10000-memory.dmp

Filesize
64KB

Download
memory/5080-142-0x0000000000000000-mapping.dmp

Download