4147b1c82dd69f4027eea1ffd5465f30894c979ea9971a0dc1f04c28a6a85fa4

General

Target

4147b1c82dd69f4027eea1ffd5465f30894c979ea9971a0dc1f04c28a6a85fa4.xls
Size

106KB
MD5

bbbc0d4bba4cf691a1cf7d30c0d1d31c
SHA1

335ded5a0eaac72c4090c293a631af57085e9a7d
SHA256

4147b1c82dd69f4027eea1ffd5465f30894c979ea9971a0dc1f04c28a6a85fa4
SHA512

3a47789281f27f1c7f22d9b40dea9d9346adc9cfa09a4ee25bec2540477a8589136d601469d66cee38a9605992b129acf2284f09edace9d8ad17eec7c590448d
SSDEEP

3072:4UZ1gxv7yZmspH7+cclKisQ6NqTBun5ob57YWVbrzQ7IO7kTE7hVlFlDUJtXwj:441gxv7yZmspH7+cclKisQ6NqTBun5o/

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 3 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

cmd.execmd.execmd.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	1512	3544	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1792	3544	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4140	3544	cmd.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 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

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\45175E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3544 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\45175E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE
3544	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 3544 wrote to memory of 4632	3544	EXCEL.EXE	splwow64.exe
PID 3544 wrote to memory of 4632	3544	EXCEL.EXE	splwow64.exe
PID 3544 wrote to memory of 1512	3544	EXCEL.EXE	cmd.exe
PID 3544 wrote to memory of 1512	3544	EXCEL.EXE	cmd.exe
PID 3544 wrote to memory of 1792	3544	EXCEL.EXE	cmd.exe
PID 3544 wrote to memory of 1792	3544	EXCEL.EXE	cmd.exe
PID 3544 wrote to memory of 4140	3544	EXCEL.EXE	cmd.exe
PID 3544 wrote to memory of 4140	3544	EXCEL.EXE	cmd.exe
PID 1512 wrote to memory of 4804	1512	cmd.exe	attrib.exe
PID 1512 wrote to memory of 4804	1512	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4804 attrib.exe

pid	process
4804	attrib.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\4147b1c82dd69f4027eea1ffd5465f30894c979ea9971a0dc1f04c28a6a85fa4.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3544

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:4632

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:1512

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:4804

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
2⤵
- Process spawned unexpected child process
PID:1792

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
2⤵
- Process spawned unexpected child process
PID:4140

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:396

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

1

T1158

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1512-140-0x0000000000000000-mapping.dmp

Download
memory/1792-141-0x0000000000000000-mapping.dmp

Download
memory/3544-136-0x00007FFC25C10000-0x00007FFC25C20000-memory.dmp

Filesize
64KB

Download
memory/3544-133-0x00007FFC25C10000-0x00007FFC25C20000-memory.dmp

Filesize
64KB

Download
memory/3544-132-0x00007FFC25C10000-0x00007FFC25C20000-memory.dmp

Filesize
64KB

Download
memory/3544-137-0x00007FFC232B0000-0x00007FFC232C0000-memory.dmp

Filesize
64KB

Download
memory/3544-138-0x00007FFC232B0000-0x00007FFC232C0000-memory.dmp

Filesize
64KB

Download
memory/3544-148-0x00007FFC25C10000-0x00007FFC25C20000-memory.dmp

Filesize
64KB

Download
memory/3544-134-0x00007FFC25C10000-0x00007FFC25C20000-memory.dmp

Filesize
64KB

Download
memory/3544-135-0x00007FFC25C10000-0x00007FFC25C20000-memory.dmp

Filesize
64KB

Download
memory/3544-147-0x00007FFC25C10000-0x00007FFC25C20000-memory.dmp

Filesize
64KB

Download
memory/3544-146-0x00007FFC25C10000-0x00007FFC25C20000-memory.dmp

Filesize
64KB

Download
memory/3544-145-0x00007FFC25C10000-0x00007FFC25C20000-memory.dmp

Filesize
64KB

Download
memory/4140-142-0x0000000000000000-mapping.dmp

Download
memory/4632-139-0x0000000000000000-mapping.dmp

Download
memory/4804-143-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads