c4eabb13a666ce38078cc777e46d5b9242e058ac76194ab6237486141c677f20

Analysis

max time kernel
189s
max time network
193s
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 03:10

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General

Target

c4eabb13a666ce38078cc777e46d5b9242e058ac76194ab6237486141c677f20.xls
Size

327KB
MD5

954f3e7049f47fef2f73eaf529e67ae7
SHA1

f3ff579b4199961db4b6b60480c5fd6d9ae8f4fa
SHA256

c4eabb13a666ce38078cc777e46d5b9242e058ac76194ab6237486141c677f20
SHA512

328dd00fff7300d39a2f48b879e3eb6e2833bea530162d61290a7e9aa69f364546d1976ff38809ee8c4c86a81e29c1fc4317165e039cd4afd4eb0a23dec03014
SSDEEP

3072:7NOHfhgoYlbuqRmvFwiLuidawDSrAKEViDOCb+fP5tLCFvdj9Hdb3NAzhxs6U7n/:QfsMT07HH

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	4972	3176	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1276	3176	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4164	3176	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

3176 EXCEL.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

Processes:

EXCEL.EXE

pid	process
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE
3176	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 3176 wrote to memory of 4972	3176	EXCEL.EXE	cmd.exe
PID 3176 wrote to memory of 4972	3176	EXCEL.EXE	cmd.exe
PID 3176 wrote to memory of 1276	3176	EXCEL.EXE	cmd.exe
PID 3176 wrote to memory of 1276	3176	EXCEL.EXE	cmd.exe
PID 3176 wrote to memory of 4164	3176	EXCEL.EXE	cmd.exe
PID 3176 wrote to memory of 4164	3176	EXCEL.EXE	cmd.exe
PID 4972 wrote to memory of 2284	4972	cmd.exe	attrib.exe
PID 4972 wrote to memory of 2284	4972	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

2284 attrib.exe

pid	process
2284	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\c4eabb13a666ce38078cc777e46d5b9242e058ac76194ab6237486141c677f20.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3176

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:4972

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:2284

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:1276

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:4164

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\346150bd0b894d2d9292a00caccbf123 /t 1492 /p 3176
1⤵
PID:4076

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/1276-140-0x0000000000000000-mapping.dmp

Download
memory/2284-142-0x0000000000000000-mapping.dmp

Download
memory/3176-132-0x00007FFC713F0000-0x00007FFC71400000-memory.dmp

Filesize
64KB

Download
memory/3176-133-0x00007FFC713F0000-0x00007FFC71400000-memory.dmp

Filesize
64KB

Download
memory/3176-134-0x00007FFC713F0000-0x00007FFC71400000-memory.dmp

Filesize
64KB

Download
memory/3176-135-0x00007FFC713F0000-0x00007FFC71400000-memory.dmp

Filesize
64KB

Download
memory/3176-136-0x00007FFC713F0000-0x00007FFC71400000-memory.dmp

Filesize
64KB

Download
memory/3176-137-0x00007FFC6F060000-0x00007FFC6F070000-memory.dmp

Filesize
64KB

Download
memory/3176-138-0x00007FFC6F060000-0x00007FFC6F070000-memory.dmp

Filesize
64KB

Download
memory/4164-141-0x0000000000000000-mapping.dmp

Download
memory/4972-139-0x0000000000000000-mapping.dmp

Download