8c8f1d4605caff4bdbcc8b417510f1753ba7de3825bd953d00821f96bfc0bbf0

Analysis

max time kernel
150s
max time network
175s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 19:25

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General

Target

8c8f1d4605caff4bdbcc8b417510f1753ba7de3825bd953d00821f96bfc0bbf0.xls
Size

87KB
MD5

640f66b9f6be82304effdd49bc45d8d3
SHA1

e3152f21a47642e3a0cd2eca998e5c670a20b941
SHA256

8c8f1d4605caff4bdbcc8b417510f1753ba7de3825bd953d00821f96bfc0bbf0
SHA512

93330b916e719277343d83d97508f7843c1ace9c06ea24d55ea7ac73a6beeee1d144a00b97c7d75bfb0de9e685e474b12e352c1785db8ba7440b3def6d87e770
SSDEEP

1536:qOOOO6mfULFkxR2gpx2jcc0lbxOvTgZfM88ScJYXw4rZC:Jq2jcc0lbxOrRjhJYXwGZC

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	1120	2408	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3292	2408	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3580	2408	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

2408 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2408	EXCEL.EXE
2408	EXCEL.EXE
2408	EXCEL.EXE
2408	EXCEL.EXE
2408	EXCEL.EXE
2408	EXCEL.EXE
2408	EXCEL.EXE
2408	EXCEL.EXE
2408	EXCEL.EXE
2408	EXCEL.EXE
2408	EXCEL.EXE
2408	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 2408 wrote to memory of 1120	2408	EXCEL.EXE	cmd.exe
PID 2408 wrote to memory of 1120	2408	EXCEL.EXE	cmd.exe
PID 2408 wrote to memory of 3292	2408	EXCEL.EXE	cmd.exe
PID 2408 wrote to memory of 3292	2408	EXCEL.EXE	cmd.exe
PID 2408 wrote to memory of 3580	2408	EXCEL.EXE	cmd.exe
PID 2408 wrote to memory of 3580	2408	EXCEL.EXE	cmd.exe
PID 1120 wrote to memory of 2144	1120	cmd.exe	attrib.exe
PID 1120 wrote to memory of 2144	1120	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

2144 attrib.exe

pid	process
2144	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\8c8f1d4605caff4bdbcc8b417510f1753ba7de3825bd953d00821f96bfc0bbf0.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2408

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:1120

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:2144

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:3292

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:3580

C:\Windows\system32\werfault.exe
werfault.exe /h /shared Global\086b5929a7264b7cbba1807834b0e3eb /t 2068 /p 2408
1⤵
PID:1216

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/1120-139-0x0000000000000000-mapping.dmp

Download
memory/2144-142-0x0000000000000000-mapping.dmp

Download
memory/2408-132-0x00007FF7EE0B0000-0x00007FF7EE0C0000-memory.dmp

Filesize
64KB

Download
memory/2408-134-0x00007FF7EE0B0000-0x00007FF7EE0C0000-memory.dmp

Filesize
64KB

Download
memory/2408-133-0x00007FF7EE0B0000-0x00007FF7EE0C0000-memory.dmp

Filesize
64KB

Download
memory/2408-135-0x00007FF7EE0B0000-0x00007FF7EE0C0000-memory.dmp

Filesize
64KB

Download
memory/2408-136-0x00007FF7EE0B0000-0x00007FF7EE0C0000-memory.dmp

Filesize
64KB

Download
memory/2408-137-0x00007FF7EBF50000-0x00007FF7EBF60000-memory.dmp

Filesize
64KB

Download
memory/2408-138-0x00007FF7EBF50000-0x00007FF7EBF60000-memory.dmp

Filesize
64KB

Download
memory/3292-140-0x0000000000000000-mapping.dmp

Download
memory/3580-141-0x0000000000000000-mapping.dmp

Download