97d161c2b7539d40f13d0e719ac219b6ecb645f2c5872d0a2f2a0837ecee4116

General

Target

97d161c2b7539d40f13d0e719ac219b6ecb645f2c5872d0a2f2a0837ecee4116.xls
Size

318KB
MD5

8ad880d25f705148baefa205b906b363
SHA1

23cc2ae12ee4499a5b562a28017807bdf5168d0d
SHA256

97d161c2b7539d40f13d0e719ac219b6ecb645f2c5872d0a2f2a0837ecee4116
SHA512

eff42190a51a6c02b778e7b0754e8b142c2265782f1cddb0da3490ca12af0444076aad7136a69cd4766ceb2de5d516feb7e55e110640ca28ecf953cdb41af0fa
SSDEEP

6144:0Nd+FWX9VgJkiOxfwPIBDWZbiNJfnNO1NC:0NjCJ8xfwAB2iNJIC

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:

WerFault.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	4924	4164	WerFault.exe	EXCEL.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	2152	4164	DW20.EXE	EXCEL.EXE

Drops file in System32 directory 3 IoCs

Processes:

EXCEL.EXE

description	ioc	process
File opened for modification	C:\Windows\System32\winupdsv.exe	EXCEL.EXE
File opened for modification	C:\Windows\System32\sfcea.exe	EXCEL.EXE
File opened for modification	C:\Windows\System32\norma1.xlm	EXCEL.EXE

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4924 4164 WerFault.exe EXCEL.EXE

pid	pid_target	process	target process
4924	4164	WerFault.exe	EXCEL.EXE

Checks processor information in registry 2 TTPs 6 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

dwwin.exeEXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dwwin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dwwin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dwwin.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
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 5 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXEdwwin.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dwwin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dwwin.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4164 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

EXCEL.EXE

pid process

4164 EXCEL.EXE
4164 EXCEL.EXE
4164 EXCEL.EXE
4164 EXCEL.EXE

Suspicious use of SetWindowsHookEx 13 IoCs

Processes:

EXCEL.EXE

pid	process
4164	EXCEL.EXE
4164	EXCEL.EXE
4164	EXCEL.EXE
4164	EXCEL.EXE
4164	EXCEL.EXE
4164	EXCEL.EXE
4164	EXCEL.EXE
4164	EXCEL.EXE
4164	EXCEL.EXE
4164	EXCEL.EXE
4164	EXCEL.EXE
4164	EXCEL.EXE
4164	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXEDW20.EXE

description	pid	process	target process
PID 4164 wrote to memory of 2152	4164	EXCEL.EXE	DW20.EXE
PID 4164 wrote to memory of 2152	4164	EXCEL.EXE	DW20.EXE
PID 2152 wrote to memory of 2108	2152	DW20.EXE	dwwin.exe
PID 2152 wrote to memory of 2108	2152	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\97d161c2b7539d40f13d0e719ac219b6ecb645f2c5872d0a2f2a0837ecee4116.xls"
1⤵
- Drops file in System32 directory
- 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:4164

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 4080
2⤵
- Process spawned suspicious child process
- Suspicious use of WriteProcessMemory
PID:2152

C:\Windows\system32\dwwin.exe
C:\Windows\system32\dwwin.exe -x -s 4080
3⤵
- Checks processor information in registry
- Enumerates system info in registry
PID:2108

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 4164 -s 4064
2⤵
- Process spawned unexpected child process
- Program crash
PID:4924

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 476 -p 4164 -ip 4164
1⤵
PID:1976

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/2108-145-0x0000000000000000-mapping.dmp

Download
memory/2152-139-0x0000000000000000-mapping.dmp

Download
memory/2152-147-0x00007FFB4B6D0000-0x00007FFB4B6E0000-memory.dmp

Filesize
64KB

Download
memory/2152-148-0x00007FFB4B6D0000-0x00007FFB4B6E0000-memory.dmp

Filesize
64KB

Download
memory/2152-149-0x00007FFB4B6D0000-0x00007FFB4B6E0000-memory.dmp

Filesize
64KB

Download
memory/2152-146-0x00007FFB4B6D0000-0x00007FFB4B6E0000-memory.dmp

Filesize
64KB

Download
memory/4164-135-0x00007FFB4B6D0000-0x00007FFB4B6E0000-memory.dmp

Filesize
64KB

Download
memory/4164-138-0x00007FFB49200000-0x00007FFB49210000-memory.dmp

Filesize
64KB

Download
memory/4164-137-0x00007FFB49200000-0x00007FFB49210000-memory.dmp

Filesize
64KB

Download
memory/4164-136-0x00007FFB4B6D0000-0x00007FFB4B6E0000-memory.dmp

Filesize
64KB

Download
memory/4164-132-0x00007FFB4B6D0000-0x00007FFB4B6E0000-memory.dmp

Filesize
64KB

Download
memory/4164-134-0x00007FFB4B6D0000-0x00007FFB4B6E0000-memory.dmp

Filesize
64KB

Download
memory/4164-133-0x00007FFB4B6D0000-0x00007FFB4B6E0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads