766df20457acf88caf4c2f5a44145635a8b8197ad1ad3b53bcb50411e7572a4a

General

Target

71a38a4b8b0a42d7771e6ae9f238a6f7.xls
Size

194KB
MD5

71a38a4b8b0a42d7771e6ae9f238a6f7
SHA1

edc994a32e272d06901545cecaa08a7fffcc522b
SHA256

766df20457acf88caf4c2f5a44145635a8b8197ad1ad3b53bcb50411e7572a4a
SHA512

6e7d7880fe02ec52f16d45707f135d902fb272449589aa0de901178512ea51eda5cda5a4119ea0873161de381ba4482b11d23046c29fbd978db87cba9d9c7041
SSDEEP

3072:WuyLw2LOglgAQgmNRKcG7uo/XyYHoElTxyTA:Kt3aY

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	4360	3348	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1680	3348	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1504	3348	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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\43865E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3348 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\43865E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 13 IoCs

Processes:

EXCEL.EXE

pid	process
3348	EXCEL.EXE
3348	EXCEL.EXE
3348	EXCEL.EXE
3348	EXCEL.EXE
3348	EXCEL.EXE
3348	EXCEL.EXE
3348	EXCEL.EXE
3348	EXCEL.EXE
3348	EXCEL.EXE
3348	EXCEL.EXE
3348	EXCEL.EXE
3348	EXCEL.EXE
3348	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 3348 wrote to memory of 4360	3348	EXCEL.EXE	cmd.exe
PID 3348 wrote to memory of 4360	3348	EXCEL.EXE	cmd.exe
PID 3348 wrote to memory of 1680	3348	EXCEL.EXE	cmd.exe
PID 3348 wrote to memory of 1680	3348	EXCEL.EXE	cmd.exe
PID 3348 wrote to memory of 1504	3348	EXCEL.EXE	cmd.exe
PID 3348 wrote to memory of 1504	3348	EXCEL.EXE	cmd.exe
PID 4360 wrote to memory of 4576	4360	cmd.exe	attrib.exe
PID 4360 wrote to memory of 4576	4360	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4576 attrib.exe

pid	process
4576	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\71a38a4b8b0a42d7771e6ae9f238a6f7.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:3348

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:4360

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:4576

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:1680

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:1504

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

1

T1158

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1504-141-0x0000000000000000-mapping.dmp

Download
memory/1680-140-0x0000000000000000-mapping.dmp

Download
memory/3348-136-0x00007FF7EFBB0000-0x00007FF7EFBC0000-memory.dmp

Filesize
64KB

Download
memory/3348-143-0x0000014A1B8E7000-0x0000014A1B8E9000-memory.dmp

Filesize
8KB

Download
memory/3348-132-0x00007FF7EFBB0000-0x00007FF7EFBC0000-memory.dmp

Filesize
64KB

Download
memory/3348-137-0x00007FF7ED250000-0x00007FF7ED260000-memory.dmp

Filesize
64KB

Download
memory/3348-138-0x00007FF7ED250000-0x00007FF7ED260000-memory.dmp

Filesize
64KB

Download
memory/3348-134-0x00007FF7EFBB0000-0x00007FF7EFBC0000-memory.dmp

Filesize
64KB

Download
memory/3348-133-0x00007FF7EFBB0000-0x00007FF7EFBC0000-memory.dmp

Filesize
64KB

Download
memory/3348-151-0x00007FF7EFBB0000-0x00007FF7EFBC0000-memory.dmp

Filesize
64KB

Download
memory/3348-150-0x00007FF7EFBB0000-0x00007FF7EFBC0000-memory.dmp

Filesize
64KB

Download
memory/3348-135-0x00007FF7EFBB0000-0x00007FF7EFBC0000-memory.dmp

Filesize
64KB

Download
memory/3348-144-0x0000014A1BA8F000-0x0000014A1BA91000-memory.dmp

Filesize
8KB

Download
memory/3348-146-0x0000014A1BA8F000-0x0000014A1BA91000-memory.dmp

Filesize
8KB

Download
memory/3348-145-0x0000014A1B8E7000-0x0000014A1B8E9000-memory.dmp

Filesize
8KB

Download
memory/3348-148-0x00007FF7EFBB0000-0x00007FF7EFBC0000-memory.dmp

Filesize
64KB

Download
memory/3348-149-0x00007FF7EFBB0000-0x00007FF7EFBC0000-memory.dmp

Filesize
64KB

Download
memory/4360-139-0x0000000000000000-mapping.dmp

Download
memory/4576-142-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads