4f86706094fda2128d60a6021e2f4f0268793c1d2deeb9f23e608b06b0e9179f

Analysis

max time kernel
116s
max time network
163s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 19:26

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General

Target

Ҵֱ20%ϵ/K4ĿɱĶԱȼ.xlsx
Size

20KB
MD5

533f04dc35371b3561b7e4d10fc22ed1
SHA1

b6a4b9f0f642c36a3e88806d19150d299b0cc27b
SHA256

0038abade2b805ab94689752e8ae15cf99dcc9aba5acdf74c77502a89bcee2bd
SHA512

74eb3fd57191571ed843db53565c82db7b4412e0745f59ad1c6dc6f4542fbe3b1268ffcd13d8b57ae4f461aa2bf09162b861ef0acc22ea6772521f6f50346000
SSDEEP

384:x5TxQRP5fyHzgnEUUzRoyeQGJVJUDMEtdmiGe98U5vnbXozP:LTaRPgHz3ddoyRGZUDjtdJKgvnboT

Score

1^/10

Malware Config

Signatures

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1532 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1532 wrote to memory of 3844	1532	EXCEL.EXE	splwow64.exe
PID 1532 wrote to memory of 3844	1532	EXCEL.EXE	splwow64.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\Ҵֱ20%ϵ\K4ĿɱĶԱȼ.xlsx"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1532

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:3844

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:4820

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

memory/1532-132-0x00007FF9A63F0000-0x00007FF9A6400000-memory.dmp

Filesize
64KB

Download
memory/1532-133-0x00007FF9A63F0000-0x00007FF9A6400000-memory.dmp

Filesize
64KB

Download
memory/1532-134-0x00007FF9A63F0000-0x00007FF9A6400000-memory.dmp

Filesize
64KB

Download
memory/1532-135-0x00007FF9A63F0000-0x00007FF9A6400000-memory.dmp

Filesize
64KB

Download
memory/1532-136-0x00007FF9A63F0000-0x00007FF9A6400000-memory.dmp

Filesize
64KB

Download
memory/1532-137-0x00007FF9A4260000-0x00007FF9A4270000-memory.dmp

Filesize
64KB

Download
memory/1532-138-0x00007FF9A4260000-0x00007FF9A4270000-memory.dmp

Filesize
64KB

Download
memory/1532-141-0x00007FF9A63F0000-0x00007FF9A6400000-memory.dmp

Filesize
64KB

Download
memory/1532-142-0x00007FF9A63F0000-0x00007FF9A6400000-memory.dmp

Filesize
64KB

Download
memory/1532-144-0x00007FF9A63F0000-0x00007FF9A6400000-memory.dmp

Filesize
64KB

Download
memory/1532-143-0x00007FF9A63F0000-0x00007FF9A6400000-memory.dmp

Filesize
64KB

Download
memory/3844-139-0x0000000000000000-mapping.dmp

Download