b09af85d9e8f86dc37baab8fca45f745f82ec24f99af989064b0c89f90fb7df0

Analysis

max time kernel
174s
max time network
174s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29-11-2022 15:40

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General

Target

b09af85d9e8f86dc37baab8fca45f745f82ec24f99af989064b0c89f90fb7df0.xls
Size

83KB
MD5

7205a4f68a954492042266e57761a6f0
SHA1

4d7aa854c2bec39f5a017bdc3dec173b42e33e9a
SHA256

b09af85d9e8f86dc37baab8fca45f745f82ec24f99af989064b0c89f90fb7df0
SHA512

e23a2de8babccae4de7760d826477c2c01e001e53b19e653bc9b64b1f6ddcc4c46da1d312469ba2a756a90c7f51188ad51c0b472899cefe7467319e1c160b5d5
SSDEEP

1536:UpppFMKuPZ872jcc0lbxOvTgZQM88ScJtXwuwEBB:+h2jcc0lbxOrUjhJtXwuhB

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	4364	984	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3412	984	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3584	984	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

984 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
984	EXCEL.EXE
984	EXCEL.EXE
984	EXCEL.EXE
984	EXCEL.EXE
984	EXCEL.EXE
984	EXCEL.EXE
984	EXCEL.EXE
984	EXCEL.EXE
984	EXCEL.EXE
984	EXCEL.EXE
984	EXCEL.EXE
984	EXCEL.EXE
984	EXCEL.EXE
984	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 984 wrote to memory of 4364	984	EXCEL.EXE	cmd.exe
PID 984 wrote to memory of 4364	984	EXCEL.EXE	cmd.exe
PID 984 wrote to memory of 3412	984	EXCEL.EXE	cmd.exe
PID 984 wrote to memory of 3412	984	EXCEL.EXE	cmd.exe
PID 984 wrote to memory of 3584	984	EXCEL.EXE	cmd.exe
PID 984 wrote to memory of 3584	984	EXCEL.EXE	cmd.exe
PID 4364 wrote to memory of 3964	4364	cmd.exe	attrib.exe
PID 4364 wrote to memory of 3964	4364	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

3964 attrib.exe

pid	process
3964	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\b09af85d9e8f86dc37baab8fca45f745f82ec24f99af989064b0c89f90fb7df0.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:984

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:4364

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:3964

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:3412

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:3584

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/984-132-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

Filesize
64KB

Download
memory/984-133-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

Filesize
64KB

Download
memory/984-134-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

Filesize
64KB

Download
memory/984-135-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

Filesize
64KB

Download
memory/984-136-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

Filesize
64KB

Download
memory/984-137-0x00007FFE81370000-0x00007FFE81380000-memory.dmp

Filesize
64KB

Download
memory/984-138-0x00007FFE81370000-0x00007FFE81380000-memory.dmp

Filesize
64KB

Download
memory/3412-140-0x0000000000000000-mapping.dmp

Download
memory/3584-141-0x0000000000000000-mapping.dmp

Download
memory/3964-142-0x0000000000000000-mapping.dmp

Download
memory/4364-139-0x0000000000000000-mapping.dmp

Download