5cfb7502079d7642102cb08f21f538788a3a09b9c2c414a343aa92a2b759ec50

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29-01-2023 19:21

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General

Target

5cfb7502079d7642102cb08f21f538788a3a09b9c2c414a343aa92a2b759ec50.xls
Size

36KB
MD5

c02f3382253da7ea2432fe82db289978
SHA1

d4ee44d6c306f377e5e9473186473e1af4071d3c
SHA256

5cfb7502079d7642102cb08f21f538788a3a09b9c2c414a343aa92a2b759ec50
SHA512

39325c652bfd78de799cead50728b37c674c22df7f7ae5b238cfe543a88309219cc39a29591c8238673b3ba6e160979e9905c61579bd8f581d1c9cf836ea7fb8
SSDEEP

768:HPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJPxCPspNf9Pi8Vw200o:vok3hbdlylKsgqopeJBWhZFGkE+cL2NR

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

explorer.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	1252	4588	explorer.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

Modifies registry class 1 IoCs

Processes:

explorer.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings explorer.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4588 EXCEL.EXE
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

EXCEL.EXE

pid process

4588 EXCEL.EXE
Suspicious use of SetWindowsHookEx 6 IoCs

Processes:

EXCEL.EXE

pid process

4588 EXCEL.EXE
4588 EXCEL.EXE
4588 EXCEL.EXE
4588 EXCEL.EXE
4588 EXCEL.EXE
4588 EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings	explorer.exe

pid	process
4588	EXCEL.EXE

pid	process
4588	EXCEL.EXE

pid	process
4588	EXCEL.EXE
4588	EXCEL.EXE
4588	EXCEL.EXE
4588	EXCEL.EXE
4588	EXCEL.EXE
4588	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXEexplorer.exe

description	pid	process	target process
PID 4588 wrote to memory of 1252	4588	EXCEL.EXE	explorer.exe
PID 4588 wrote to memory of 1252	4588	EXCEL.EXE	explorer.exe
PID 2900 wrote to memory of 3472	2900	explorer.exe	WScript.exe
PID 2900 wrote to memory of 3472	2900	explorer.exe	WScript.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\5cfb7502079d7642102cb08f21f538788a3a09b9c2c414a343aa92a2b759ec50.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4588

C:\Windows\explorer.exe
explorer.exe C:\Users\Public\Documents\u2pi.vbs
2⤵
- Process spawned unexpected child process
PID:1252

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2900

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\u2pi.vbs"
2⤵
PID:3472

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

C:\Users\Public\Documents\u2pi.vbs
Filesize
532B

MD5
79c34f90b6e2c1210955419f951e9b34

SHA1
22041c657140f0b7c923ce06254064f9c6cb3472

SHA256
4897c93e57587da38abaf60aa3ca8baff4232ed3e3b038a8401305adccbb1d97

SHA512
0509656ab6ef025a21b68edee63989b660a694686568744308f55d8635c12b49d8014d796a3f0a0603e5ec1000839eb42af38f2d9aa05d05c190a8076a318cfa

Download Submit
memory/1252-139-0x0000000000000000-mapping.dmp

Download
memory/3472-141-0x0000000000000000-mapping.dmp

Download
memory/4588-132-0x00007FFC794B0000-0x00007FFC794C0000-memory.dmp

Filesize
64KB

Download
memory/4588-134-0x00007FFC794B0000-0x00007FFC794C0000-memory.dmp

Filesize
64KB

Download
memory/4588-133-0x00007FFC794B0000-0x00007FFC794C0000-memory.dmp

Filesize
64KB

Download
memory/4588-135-0x00007FFC794B0000-0x00007FFC794C0000-memory.dmp

Filesize
64KB

Download
memory/4588-136-0x00007FFC794B0000-0x00007FFC794C0000-memory.dmp

Filesize
64KB

Download
memory/4588-137-0x00007FFC773B0000-0x00007FFC773C0000-memory.dmp

Filesize
64KB

Download
memory/4588-138-0x00007FFC773B0000-0x00007FFC773C0000-memory.dmp

Filesize
64KB

Download