4f86706094fda2128d60a6021e2f4f0268793c1d2deeb9f23e608b06b0e9179f

Analysis

max time kernel
115s
max time network
153s
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/K4һθ¥һ-20140331.xlsx
Size

14KB
MD5

7a9337c31801829801a391b601e1edda
SHA1

fec5b53213460af278a7216435490a2e88a516c2
SHA256

4bc7ba480cf0d23b8b198773a7fe71bbfddf2fc453c1f98ee175e10e9268d64a
SHA512

bc29ba9d204cdef049a3c7ad8b07e7239bf90d581aadc367c3076e0ef14f9eeaad9bf8b582d73baef55164fc6a9bd706774177efec2987b8b6edfb523a2635d7
SSDEEP

192:8kuQY0yHzgnazzSn6cDT2M63ZoH2USGMHJkeulNOiwuAQfmsiJlBACuXcaN/:z7yHzgnEzSn6cDTjtMHJzdiwHQufwcG/

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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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

2452 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2452 wrote to memory of 3848	2452	EXCEL.EXE	splwow64.exe
PID 2452 wrote to memory of 3848	2452	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\K4һθ¥һ-20140331.xlsx"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2452

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:3848

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:2348

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/2452-132-0x00007FFD94C10000-0x00007FFD94C20000-memory.dmp

Filesize
64KB

Download
memory/2452-133-0x00007FFD94C10000-0x00007FFD94C20000-memory.dmp

Filesize
64KB

Download
memory/2452-134-0x00007FFD94C10000-0x00007FFD94C20000-memory.dmp

Filesize
64KB

Download
memory/2452-135-0x00007FFD94C10000-0x00007FFD94C20000-memory.dmp

Filesize
64KB

Download
memory/2452-136-0x00007FFD94C10000-0x00007FFD94C20000-memory.dmp

Filesize
64KB

Download
memory/2452-137-0x00007FFD92AA0000-0x00007FFD92AB0000-memory.dmp

Filesize
64KB

Download
memory/2452-138-0x00007FFD92AA0000-0x00007FFD92AB0000-memory.dmp

Filesize
64KB

Download
memory/2452-141-0x00007FFD94C10000-0x00007FFD94C20000-memory.dmp

Filesize
64KB

Download
memory/2452-142-0x00007FFD94C10000-0x00007FFD94C20000-memory.dmp

Filesize
64KB

Download
memory/2452-143-0x00007FFD94C10000-0x00007FFD94C20000-memory.dmp

Filesize
64KB

Download
memory/2452-144-0x00007FFD94C10000-0x00007FFD94C20000-memory.dmp

Filesize
64KB

Download
memory/3848-139-0x0000000000000000-mapping.dmp

Download