9d5e6067c0e410d07db36fc7aad8f4c704595da58f2ab6ed5eab6360bcab4268

Analysis

max time kernel
253s
max time network
284s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
20-11-2022 10:43

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General

Target

9d5e6067c0e410d07db36fc7aad8f4c704595da58f2ab6ed5eab6360bcab4268.xls
Size

114KB
MD5

d2b1b39856a93c1ba65bf06dd434645f
SHA1

d1b62030e3227730b128a12d6ea6d9e123bccdea
SHA256

9d5e6067c0e410d07db36fc7aad8f4c704595da58f2ab6ed5eab6360bcab4268
SHA512

d4eb6d72f95af6fd89902e62b141557358b63a2c9605b4a744e756a7b0b13ce704e368e353d1de741a42b1bd6532138614ee74c8c038adfb686e1d69f5cbda4a
SSDEEP

1536:rrrrrTYSfUir1WVbrzLo+d7ITkR62l0I88+80fX4RWM2M/M+3h:ASrWVbrzLv7ITk9/jH0fX4D5kEh

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	2480	4112	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4480	4112	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4256	4112	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4112 EXCEL.EXE
Suspicious use of SetWindowsHookEx 9 IoCs

Processes:

EXCEL.EXE

pid process

4112 EXCEL.EXE
4112 EXCEL.EXE
4112 EXCEL.EXE
4112 EXCEL.EXE
4112 EXCEL.EXE
4112 EXCEL.EXE
4112 EXCEL.EXE
4112 EXCEL.EXE
4112 EXCEL.EXE

pid	process
4112	EXCEL.EXE

pid	process
4112	EXCEL.EXE
4112	EXCEL.EXE
4112	EXCEL.EXE
4112	EXCEL.EXE
4112	EXCEL.EXE
4112	EXCEL.EXE
4112	EXCEL.EXE
4112	EXCEL.EXE
4112	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4112 wrote to memory of 2480	4112	EXCEL.EXE	cmd.exe
PID 4112 wrote to memory of 2480	4112	EXCEL.EXE	cmd.exe
PID 4112 wrote to memory of 4480	4112	EXCEL.EXE	cmd.exe
PID 4112 wrote to memory of 4480	4112	EXCEL.EXE	cmd.exe
PID 4112 wrote to memory of 4256	4112	EXCEL.EXE	cmd.exe
PID 4112 wrote to memory of 4256	4112	EXCEL.EXE	cmd.exe
PID 2480 wrote to memory of 4692	2480	cmd.exe	attrib.exe
PID 2480 wrote to memory of 4692	2480	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4692 attrib.exe

pid	process
4692	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\9d5e6067c0e410d07db36fc7aad8f4c704595da58f2ab6ed5eab6360bcab4268.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4112

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:2480

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:4692

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:4480

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:4256

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\f0f797d57a5d4f5fa92c9c61fffd52e0 /t 4104 /p 4112
1⤵
PID:388

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2480-141-0x0000000000000000-mapping.dmp

Download
memory/4112-132-0x00007FF9B3E30000-0x00007FF9B3E40000-memory.dmp

Filesize
64KB

Download
memory/4112-133-0x00007FF9B3E30000-0x00007FF9B3E40000-memory.dmp

Filesize
64KB

Download
memory/4112-134-0x00007FF9B3E30000-0x00007FF9B3E40000-memory.dmp

Filesize
64KB

Download
memory/4112-135-0x00007FF9B3E30000-0x00007FF9B3E40000-memory.dmp

Filesize
64KB

Download
memory/4112-136-0x00007FF9B3E30000-0x00007FF9B3E40000-memory.dmp

Filesize
64KB

Download
memory/4112-137-0x00007FF9B1DD0000-0x00007FF9B1DE0000-memory.dmp

Filesize
64KB

Download
memory/4112-138-0x00007FF9B1DD0000-0x00007FF9B1DE0000-memory.dmp

Filesize
64KB

Download
memory/4256-143-0x0000000000000000-mapping.dmp

Download
memory/4480-142-0x0000000000000000-mapping.dmp

Download
memory/4692-144-0x0000000000000000-mapping.dmp

Download