735f4e4a46c441adc84d100d11eeeeca0de9ff4e1b50f3f957652e64f6b0e411

Analysis

max time kernel
104s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-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./4.�.xls
Size

109KB
MD5

60c38b854d589f183efb61a4a35417c8
SHA1

9eef3058c4293e6d38e06b284b8438e6bac73996
SHA256

c827c06b8d0656a0885398577a150e3e9a5a34aa8d7902693f599e13638c4d4d
SHA512

07a9f4f0d8fb84aa536c4c31038367f53539ba026a621f184889f5bfa9620ee4553b595204517be0724b2563792e4c44ec46ff23f0dba550a078aa543e415e21
SSDEEP

3072:MrQn6v7yZmspH7+7alMisPI4ukoRWGNgrG2AEWVbrzr6B7ITkPSyww33XjUJtXw+:CQn6v7yZmspH7+7alMisPI4ukoRWGNgk

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	1380	4296	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3888	4296	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4168	4296	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\K1-3K2-2ؿбļ\02.ļ\01.\FD275E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4296 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4296 wrote to memory of 3468	4296	EXCEL.EXE	splwow64.exe
PID 4296 wrote to memory of 3468	4296	EXCEL.EXE	splwow64.exe
PID 4296 wrote to memory of 1380	4296	EXCEL.EXE	cmd.exe
PID 4296 wrote to memory of 1380	4296	EXCEL.EXE	cmd.exe
PID 4296 wrote to memory of 3888	4296	EXCEL.EXE	cmd.exe
PID 4296 wrote to memory of 3888	4296	EXCEL.EXE	cmd.exe
PID 4296 wrote to memory of 4168	4296	EXCEL.EXE	cmd.exe
PID 4296 wrote to memory of 4168	4296	EXCEL.EXE	cmd.exe
PID 1380 wrote to memory of 4596	1380	cmd.exe	attrib.exe
PID 1380 wrote to memory of 4596	1380	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4596 attrib.exe

pid	process
4596	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.\4.�.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:4296

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:3468

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:1380

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:4596

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:3888

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:4168

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:3452

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

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Downloads

memory/1380-140-0x0000000000000000-mapping.dmp

Download
memory/3468-139-0x0000000000000000-mapping.dmp

Download
memory/3888-141-0x0000000000000000-mapping.dmp

Download
memory/4168-142-0x0000000000000000-mapping.dmp

Download
memory/4296-136-0x00007FF96E950000-0x00007FF96E960000-memory.dmp

Filesize
64KB

Download
memory/4296-137-0x00007FF96C4B0000-0x00007FF96C4C0000-memory.dmp

Filesize
64KB

Download
memory/4296-138-0x00007FF96C4B0000-0x00007FF96C4C0000-memory.dmp

Filesize
64KB

Download
memory/4296-132-0x00007FF96E950000-0x00007FF96E960000-memory.dmp

Filesize
64KB

Download
memory/4296-135-0x00007FF96E950000-0x00007FF96E960000-memory.dmp

Filesize
64KB

Download
memory/4296-134-0x00007FF96E950000-0x00007FF96E960000-memory.dmp

Filesize
64KB

Download
memory/4296-133-0x00007FF96E950000-0x00007FF96E960000-memory.dmp

Filesize
64KB

Download
memory/4296-145-0x00007FF96E950000-0x00007FF96E960000-memory.dmp

Filesize
64KB

Download
memory/4296-146-0x00007FF96E950000-0x00007FF96E960000-memory.dmp

Filesize
64KB

Download
memory/4296-148-0x00007FF96E950000-0x00007FF96E960000-memory.dmp

Filesize
64KB

Download
memory/4296-147-0x00007FF96E950000-0x00007FF96E960000-memory.dmp

Filesize
64KB

Download
memory/4596-143-0x0000000000000000-mapping.dmp

Download