5742b2981c5f4f6aaca7b85d76747498b65ff13d6505b5682649fd2827334c52

Analysis

max time kernel
206s
max time network
211s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 11:48

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General

Target

5742b2981c5f4f6aaca7b85d76747498b65ff13d6505b5682649fd2827334c52.xls
Size

250KB
MD5

b44c5f6bb87ff7fffa5aab94bfcdf716
SHA1

9996e6e68bec8bc561817e7f18e1af7622531f69
SHA256

5742b2981c5f4f6aaca7b85d76747498b65ff13d6505b5682649fd2827334c52
SHA512

c69ccd1ed8f306bb58bbdd3ba28b458cbe48bb6e579472a2feb67817d9d9a39611b2b94468c8544eefae5bc3e3cdffde3f3258fbc16246a2f6fa65647d8e4c6f
SSDEEP

1536:6MMMQ9hx8uVoE1qrTP+qOhH6ucp9lIjMJip7nFxgqo9TEnaFL9zy+mA08gwcUAgt:fEnaFLcN1BKhLUs1xHFn2GFSI

Score

6^/10

Malware Config

Signatures

Process spawned suspicious child process 1 IoCs

This child process is typically not spawned unless (for example) the parent process crashes. This typically indicates the parent process was unsuccessfully compromised.

Processes:

DW20.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	720	3948	DW20.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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3948 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

EXCEL.EXE

pid process

3948 EXCEL.EXE
3948 EXCEL.EXE

Suspicious use of SetWindowsHookEx 13 IoCs

Processes:

EXCEL.EXE

pid	process
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE
3948	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXEDW20.EXE

description	pid	process	target process
PID 3948 wrote to memory of 1536	3948	EXCEL.EXE	splwow64.exe
PID 3948 wrote to memory of 1536	3948	EXCEL.EXE	splwow64.exe
PID 3948 wrote to memory of 720	3948	EXCEL.EXE	DW20.EXE
PID 3948 wrote to memory of 720	3948	EXCEL.EXE	DW20.EXE
PID 720 wrote to memory of 4896	720	DW20.EXE	dwwin.exe
PID 720 wrote to memory of 4896	720	DW20.EXE	dwwin.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\5742b2981c5f4f6aaca7b85d76747498b65ff13d6505b5682649fd2827334c52.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3948

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:1536

C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE
"C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE" -x -s 4600
2⤵
- Process spawned suspicious child process
- Suspicious use of WriteProcessMemory
PID:720

C:\Windows\system32\dwwin.exe
C:\Windows\system32\dwwin.exe -x -s 4600
3⤵
PID:4896

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:4856

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/720-140-0x0000000000000000-mapping.dmp

Download
memory/1536-139-0x0000000000000000-mapping.dmp

Download
memory/3948-132-0x00007FFD56A30000-0x00007FFD56A40000-memory.dmp

Filesize
64KB

Download
memory/3948-133-0x00007FFD56A30000-0x00007FFD56A40000-memory.dmp

Filesize
64KB

Download
memory/3948-134-0x00007FFD56A30000-0x00007FFD56A40000-memory.dmp

Filesize
64KB

Download
memory/3948-135-0x00007FFD56A30000-0x00007FFD56A40000-memory.dmp

Filesize
64KB

Download
memory/3948-136-0x00007FFD56A30000-0x00007FFD56A40000-memory.dmp

Filesize
64KB

Download
memory/3948-137-0x00007FFD54480000-0x00007FFD54490000-memory.dmp

Filesize
64KB

Download
memory/3948-138-0x00007FFD54480000-0x00007FFD54490000-memory.dmp

Filesize
64KB

Download
memory/4896-146-0x0000000000000000-mapping.dmp

Download