e43d0ab8e32511d2728e3e26e97892b9a21c93038942b25dc7ead6a9021bd221

General

Target

b623452d3d046147286612405257f4c4.xls
Size

154KB
MD5

b623452d3d046147286612405257f4c4
SHA1

2cd98c84ecad824bb912789fa1a94be04821266c
SHA256

e43d0ab8e32511d2728e3e26e97892b9a21c93038942b25dc7ead6a9021bd221
SHA512

2fba169db8ad78d24a9da6ddbf3e9dc2ac17684113d6b6537ab580560dd9abd8bea0b5835f011ae20062140121e369a8242ec109e2ee91efdd8c66016547cf5f
SSDEEP

3072:Rk3hOdsylKlgryzc4bNhZFGzE+cvCcLenb0vn6mRefs5hcIl4OglgAG3NRKEjJtw:Rk3hOdsylKlgryzc4bNhZF+E+aCcLenb

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	4564	2136	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2392	2136	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4868	2136	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 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

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\5E665E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2136 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

2136 EXCEL.EXE
2136 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\5E665E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE
2136	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 2136 wrote to memory of 4564	2136	EXCEL.EXE	cmd.exe
PID 2136 wrote to memory of 4564	2136	EXCEL.EXE	cmd.exe
PID 2136 wrote to memory of 4868	2136	EXCEL.EXE	cmd.exe
PID 2136 wrote to memory of 4868	2136	EXCEL.EXE	cmd.exe
PID 2136 wrote to memory of 2392	2136	EXCEL.EXE	cmd.exe
PID 2136 wrote to memory of 2392	2136	EXCEL.EXE	cmd.exe
PID 4564 wrote to memory of 4800	4564	cmd.exe	attrib.exe
PID 4564 wrote to memory of 4800	4564	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4800 attrib.exe

pid	process
4800	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\b623452d3d046147286612405257f4c4.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2136

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:4564

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:4800

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:2392

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:4868

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

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Downloads

memory/2136-138-0x00007FFD9CAE0000-0x00007FFD9CAF0000-memory.dmp

Filesize
64KB

Download
memory/2136-144-0x00007FFD9F410000-0x00007FFD9F420000-memory.dmp

Filesize
64KB

Download
memory/2136-133-0x00007FFD9F410000-0x00007FFD9F420000-memory.dmp

Filesize
64KB

Download
memory/2136-135-0x00007FFD9F410000-0x00007FFD9F420000-memory.dmp

Filesize
64KB

Download
memory/2136-136-0x00007FFD9F410000-0x00007FFD9F420000-memory.dmp

Filesize
64KB

Download
memory/2136-137-0x00007FFD9CAE0000-0x00007FFD9CAF0000-memory.dmp

Filesize
64KB

Download
memory/2136-134-0x00007FFD9F410000-0x00007FFD9F420000-memory.dmp

Filesize
64KB

Download
memory/2136-147-0x00007FFD9F410000-0x00007FFD9F420000-memory.dmp

Filesize
64KB

Download
memory/2136-132-0x00007FFD9F410000-0x00007FFD9F420000-memory.dmp

Filesize
64KB

Download
memory/2136-146-0x00007FFD9F410000-0x00007FFD9F420000-memory.dmp

Filesize
64KB

Download
memory/2136-145-0x00007FFD9F410000-0x00007FFD9F420000-memory.dmp

Filesize
64KB

Download
memory/2392-141-0x0000000000000000-mapping.dmp

Download
memory/4564-139-0x0000000000000000-mapping.dmp

Download
memory/4800-142-0x0000000000000000-mapping.dmp

Download
memory/4868-140-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads