a5499f4b5c28bc94e1fe2dfcd5a3a490feaee58d7f431d0231b61a7e3b180f87

Analysis

max time kernel
176s
max time network
188s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
29-01-2023 19:21

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General

Target

a5499f4b5c28bc94e1fe2dfcd5a3a490feaee58d7f431d0231b61a7e3b180f87.xls
Size

35KB
MD5

c26b81534d6d01ca5baf38b476f1f262
SHA1

a891c30369b99939fb14cd4172663761f3dac8c0
SHA256

a5499f4b5c28bc94e1fe2dfcd5a3a490feaee58d7f431d0231b61a7e3b180f87
SHA512

a3da43e3a18d80b307adf2b03a2b0276e247758616e8ce0f44a896223708453ee372233695048d3923688a040e5d8e2f53f4eeaefd8ed62db222d1972b074b4e
SSDEEP

768:/PqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJoCd7w74TxC:3ok3hbdlylKsgqopeJBWhZFGkE+cL2Nn

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	3504	4168	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-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings explorer.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4168 EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000_Classes\Local Settings	explorer.exe

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4168	EXCEL.EXE
4168	EXCEL.EXE
4168	EXCEL.EXE
4168	EXCEL.EXE
4168	EXCEL.EXE
4168	EXCEL.EXE
4168	EXCEL.EXE
4168	EXCEL.EXE
4168	EXCEL.EXE
4168	EXCEL.EXE
4168	EXCEL.EXE
4168	EXCEL.EXE
4168	EXCEL.EXE
4168	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXEexplorer.exe

description	pid	process	target process
PID 4168 wrote to memory of 3504	4168	EXCEL.EXE	explorer.exe
PID 4168 wrote to memory of 3504	4168	EXCEL.EXE	explorer.exe
PID 4324 wrote to memory of 4024	4324	explorer.exe	WScript.exe
PID 4324 wrote to memory of 4024	4324	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\a5499f4b5c28bc94e1fe2dfcd5a3a490feaee58d7f431d0231b61a7e3b180f87.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4168

C:\Windows\explorer.exe
explorer.exe C:\Users\Public\Documents\Y4eg72.vbs
2⤵
- Process spawned unexpected child process
PID:3504

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4324

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\Y4eg72.vbs"
2⤵
PID:4024

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\Y4eg72.vbs
Filesize
583B

MD5
c6ed01b5f5c41b8fa243153caaf1e231

SHA1
d0ab46824af9409665d3d3271ada01772c6e0575

SHA256
9ee1bf6e2442870589418e0a21449ecd489d438d8b4dfb1572654914ec22dd7d

SHA512
bf3160f275546cbd9e1768ddd379e1e19f9a28cc345d3e8123c7513fd629fc5644858e3802c6c820f885767f338dc07cb604d861f58043fe54ae8b128261b14e

Download Submit
memory/3504-139-0x0000000000000000-mapping.dmp

Download
memory/4024-141-0x0000000000000000-mapping.dmp

Download
memory/4168-132-0x00007FFD189F0000-0x00007FFD18A00000-memory.dmp

Filesize
64KB

Download
memory/4168-134-0x00007FFD189F0000-0x00007FFD18A00000-memory.dmp

Filesize
64KB

Download
memory/4168-133-0x00007FFD189F0000-0x00007FFD18A00000-memory.dmp

Filesize
64KB

Download
memory/4168-135-0x00007FFD189F0000-0x00007FFD18A00000-memory.dmp

Filesize
64KB

Download
memory/4168-136-0x00007FFD189F0000-0x00007FFD18A00000-memory.dmp

Filesize
64KB

Download
memory/4168-137-0x00007FFD16840000-0x00007FFD16850000-memory.dmp

Filesize
64KB

Download
memory/4168-138-0x00007FFD16840000-0x00007FFD16850000-memory.dmp

Filesize
64KB

Download