062a72f890ce529e871945882ec12b8ac7d9708a4b62b693a61239d52cffeeff

Analysis

max time kernel
188s
max time network
205s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
26-11-2022 22:07

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General

Target

062a72f890ce529e871945882ec12b8ac7d9708a4b62b693a61239d52cffeeff.xls
Size

76KB
MD5

eeb964d6e79f7eb8ad36a1e8aab18b6f
SHA1

170bd8ea2093fe25eb3e0312eec5573fbd05e2e9
SHA256

062a72f890ce529e871945882ec12b8ac7d9708a4b62b693a61239d52cffeeff
SHA512

7c8f15fd98ae2a85dcceb01628e68e75153b124947207ea9347a333ea69e9a40764fbc99e40153c56026b7cdbe991685f71edf9ec3f07edc384188a0ab9ff1c2
SSDEEP

1536:HUs000VoCcM2jcc0lbxOqTgZpM88ScJtXadGbR:HUf2jcc0lbxOKfjhJtXa0bR

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	1396	3604	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3116	3604	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4264	3604	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3604 EXCEL.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

Processes:

EXCEL.EXE

pid	process
3604	EXCEL.EXE
3604	EXCEL.EXE
3604	EXCEL.EXE
3604	EXCEL.EXE
3604	EXCEL.EXE
3604	EXCEL.EXE
3604	EXCEL.EXE
3604	EXCEL.EXE
3604	EXCEL.EXE
3604	EXCEL.EXE
3604	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 3604 wrote to memory of 1396	3604	EXCEL.EXE	cmd.exe
PID 3604 wrote to memory of 1396	3604	EXCEL.EXE	cmd.exe
PID 3604 wrote to memory of 4264	3604	EXCEL.EXE	cmd.exe
PID 3604 wrote to memory of 4264	3604	EXCEL.EXE	cmd.exe
PID 3604 wrote to memory of 3116	3604	EXCEL.EXE	cmd.exe
PID 3604 wrote to memory of 3116	3604	EXCEL.EXE	cmd.exe
PID 1396 wrote to memory of 2408	1396	cmd.exe	attrib.exe
PID 1396 wrote to memory of 2408	1396	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

2408 attrib.exe

pid	process
2408	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\062a72f890ce529e871945882ec12b8ac7d9708a4b62b693a61239d52cffeeff.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3604

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:1396

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:2408

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:3116

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:4264

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\ce537d058dd84c16883f35586639379e /t 2268 /p 3604
1⤵
PID:3328

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/1396-139-0x0000000000000000-mapping.dmp

Download
memory/2408-142-0x0000000000000000-mapping.dmp

Download
memory/3116-141-0x0000000000000000-mapping.dmp

Download
memory/3604-132-0x00007FFEFC0B0000-0x00007FFEFC0C0000-memory.dmp

Filesize
64KB

Download
memory/3604-133-0x00007FFEFC0B0000-0x00007FFEFC0C0000-memory.dmp

Filesize
64KB

Download
memory/3604-134-0x00007FFEFC0B0000-0x00007FFEFC0C0000-memory.dmp

Filesize
64KB

Download
memory/3604-135-0x00007FFEFC0B0000-0x00007FFEFC0C0000-memory.dmp

Filesize
64KB

Download
memory/3604-136-0x00007FFEFC0B0000-0x00007FFEFC0C0000-memory.dmp

Filesize
64KB

Download
memory/3604-137-0x00007FFEFA050000-0x00007FFEFA060000-memory.dmp

Filesize
64KB

Download
memory/3604-138-0x00007FFEFA050000-0x00007FFEFA060000-memory.dmp

Filesize
64KB

Download
memory/4264-140-0x0000000000000000-mapping.dmp

Download