56754abf3731d99b740618119f73736894c6aba81fde45ee27f864f10b376341

General

Target

account_invoice_5918.xls
Size

166KB
MD5

a13b46e0c9153d4ce366ad65c4d2fc04
SHA1

bd1c268034ab18a61ef5bb2f4c75de70fd739124
SHA256

56754abf3731d99b740618119f73736894c6aba81fde45ee27f864f10b376341
SHA512

54cfc04fe000011ea8ecc12988dfa9b4f572093d187a5bc3473333ae142990130165bbf71a5b1751ab454f40535eb2d8ce01d642cffb5f22646b79411fb5a40f

Score

6^/10

Malware Config

Signatures

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXEDW20.EXE

description	pid	process	target process
PID 720 wrote to memory of 3388	720	EXCEL.EXE	DW20.EXE
PID 720 wrote to memory of 3388	720	EXCEL.EXE	DW20.EXE
PID 3388 wrote to memory of 936	3388	DW20.EXE	dwwin.exe
PID 3388 wrote to memory of 936	3388	DW20.EXE	dwwin.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

EXCEL.EXE

pid process

720 EXCEL.EXE
720 EXCEL.EXE
720 EXCEL.EXE
720 EXCEL.EXE
720 EXCEL.EXE
720 EXCEL.EXE
720 EXCEL.EXE
720 EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

720 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

EXCEL.EXEdwwin.exe

pid process

720 EXCEL.EXE
720 EXCEL.EXE
936 dwwin.exe
936 dwwin.exe

pid	process
720	EXCEL.EXE
720	EXCEL.EXE
720	EXCEL.EXE
720	EXCEL.EXE
720	EXCEL.EXE
720	EXCEL.EXE
720	EXCEL.EXE
720	EXCEL.EXE

pid	process
720	EXCEL.EXE

pid	process
720	EXCEL.EXE
720	EXCEL.EXE
936	dwwin.exe
936	dwwin.exe

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	3388	720	DW20.EXE	EXCEL.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\account_invoice_5918.xls"
1⤵
- Suspicious use of WriteProcessMemory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
PID:720

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 4332
2⤵
- Suspicious use of WriteProcessMemory
- Process spawned suspicious child process
PID:3388

C:\Windows\system32\dwwin.exe
C:\Windows\system32\dwwin.exe -x -s 4332
3⤵
- Suspicious behavior: EnumeratesProcesses
PID:936

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/936-1-0x0000000000000000-mapping.dmp

Download
memory/936-2-0x000002258FB30000-0x000002258FB31000-memory.dmp

Filesize
4KB

Download
memory/936-3-0x000002258FB30000-0x000002258FB31000-memory.dmp

Filesize
4KB

Download
memory/936-5-0x0000022590330000-0x0000022590331000-memory.dmp

Filesize
4KB

Download
memory/936-8-0x0000022590730000-0x0000022590731000-memory.dmp

Filesize
4KB

Download
memory/936-10-0x0000022590730000-0x0000022590731000-memory.dmp

Filesize
4KB

Download
memory/936-12-0x00000225905E0000-0x00000225905E1000-memory.dmp

Filesize
4KB

Download
memory/936-13-0x00000225905E0000-0x00000225905E1000-memory.dmp

Filesize
4KB

Download
memory/936-14-0x00000225905E0000-0x00000225905E1000-memory.dmp

Filesize
4KB

Download
memory/3388-0-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads