1784b73eabef2212557cd3bd223fb18df970c640a01b09eb105e733497bb5a90

Analysis

max time kernel
169s
max time network
194s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 20:13

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General

Target

1784b73eabef2212557cd3bd223fb18df970c640a01b09eb105e733497bb5a90.xls
Size

86KB
MD5

d0f18f99865a2c9decb99a51630cd422
SHA1

ffc576f1d631f1c1b803340441c4d2105eb0ad29
SHA256

1784b73eabef2212557cd3bd223fb18df970c640a01b09eb105e733497bb5a90
SHA512

a7e3e33ab4ba27e8c3c6c1bfe9701402105b0eb7819c3e6dba0b5a8ed011227ed1350a2d7c149abba72735725631fad6957eb5ca5194967e02ed563c1ffe411b
SSDEEP

1536:innnnjv2Gqax6Oo7E+Rs2VMQ/2jcc0lbxOvTgZ+M88ScJbXwuIoWt5o0:Es2jcc0lbxOrijhJbXwm0

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	3672	4296	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4412	4296	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	704	4296	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

4296 EXCEL.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

Processes:

EXCEL.EXE

pid	process
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE
4296	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4296 wrote to memory of 3672	4296	EXCEL.EXE	cmd.exe
PID 4296 wrote to memory of 3672	4296	EXCEL.EXE	cmd.exe
PID 4296 wrote to memory of 704	4296	EXCEL.EXE	cmd.exe
PID 4296 wrote to memory of 704	4296	EXCEL.EXE	cmd.exe
PID 4296 wrote to memory of 4412	4296	EXCEL.EXE	cmd.exe
PID 4296 wrote to memory of 4412	4296	EXCEL.EXE	cmd.exe
PID 3672 wrote to memory of 4220	3672	cmd.exe	attrib.exe
PID 3672 wrote to memory of 4220	3672	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

4220 attrib.exe

pid	process
4220	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\1784b73eabef2212557cd3bd223fb18df970c640a01b09eb105e733497bb5a90.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4296

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:3672

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:4220

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:4412

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:704

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\e0cec8da03b043669c239a076bb3d4ee /t 2636 /p 4296
1⤵
PID:4784

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/704-140-0x0000000000000000-mapping.dmp

Download
memory/3672-139-0x0000000000000000-mapping.dmp

Download
memory/4220-142-0x0000000000000000-mapping.dmp

Download
memory/4296-132-0x00007FFB54410000-0x00007FFB54420000-memory.dmp

Filesize
64KB

Download
memory/4296-133-0x00007FFB54410000-0x00007FFB54420000-memory.dmp

Filesize
64KB

Download
memory/4296-134-0x00007FFB54410000-0x00007FFB54420000-memory.dmp

Filesize
64KB

Download
memory/4296-135-0x00007FFB54410000-0x00007FFB54420000-memory.dmp

Filesize
64KB

Download
memory/4296-136-0x00007FFB54410000-0x00007FFB54420000-memory.dmp

Filesize
64KB

Download
memory/4296-137-0x00007FFB51AB0000-0x00007FFB51AC0000-memory.dmp

Filesize
64KB

Download
memory/4296-138-0x00007FFB51AB0000-0x00007FFB51AC0000-memory.dmp

Filesize
64KB

Download
memory/4412-141-0x0000000000000000-mapping.dmp

Download