c3976d6eb9247f532bb1cc264f248c3f3f9f2d6cbcd18f88c0944ca6cb9f7c2b

General

Target

c3976d6eb9247f532bb1cc264f248c3f3f9f2d6cbcd18f88c0944ca6cb9f7c2b.xls
Size

220KB
MD5

33e995e62456abe5a30086c03d683548
SHA1

d217b9433ecdba83bdfc5dbfc9d5652f2ce2c642
SHA256

c3976d6eb9247f532bb1cc264f248c3f3f9f2d6cbcd18f88c0944ca6cb9f7c2b
SHA512

f8d7cafcd1ec83c281097a9b6e2c8267a603517d7259c4f8db421b2af2e2f97805557c39ae1a5f903d2f327b733197d27380cc0c842f0aaa7f8e498819c00e41
SSDEEP

3072:mHRO0a3dRW6RSx7dOpnmZWVbrzQ7ITSnZQjua5t:yRuW6Rgd

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	2960	5012	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	212	5012	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1620	5012	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

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\75075E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

5012 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\75075E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE
5012	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 5012 wrote to memory of 2960	5012	EXCEL.EXE	cmd.exe
PID 5012 wrote to memory of 2960	5012	EXCEL.EXE	cmd.exe
PID 5012 wrote to memory of 212	5012	EXCEL.EXE	cmd.exe
PID 5012 wrote to memory of 212	5012	EXCEL.EXE	cmd.exe
PID 5012 wrote to memory of 1620	5012	EXCEL.EXE	cmd.exe
PID 5012 wrote to memory of 1620	5012	EXCEL.EXE	cmd.exe
PID 2960 wrote to memory of 732	2960	cmd.exe	attrib.exe
PID 2960 wrote to memory of 732	2960	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

732 attrib.exe

pid	process
732	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\c3976d6eb9247f532bb1cc264f248c3f3f9f2d6cbcd18f88c0944ca6cb9f7c2b.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5012

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:2960

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:732

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:212

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:1620

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

1

T1158

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/212-140-0x0000000000000000-mapping.dmp

Download
memory/732-142-0x0000000000000000-mapping.dmp

Download
memory/1620-141-0x0000000000000000-mapping.dmp

Download
memory/2960-139-0x0000000000000000-mapping.dmp

Download
memory/5012-135-0x00007FFF1A650000-0x00007FFF1A660000-memory.dmp

Filesize
64KB

Download
memory/5012-137-0x00007FFF17CF0000-0x00007FFF17D00000-memory.dmp

Filesize
64KB

Download
memory/5012-138-0x00007FFF17CF0000-0x00007FFF17D00000-memory.dmp

Filesize
64KB

Download
memory/5012-136-0x00007FFF1A650000-0x00007FFF1A660000-memory.dmp

Filesize
64KB

Download
memory/5012-132-0x00007FFF1A650000-0x00007FFF1A660000-memory.dmp

Filesize
64KB

Download
memory/5012-133-0x00007FFF1A650000-0x00007FFF1A660000-memory.dmp

Filesize
64KB

Download
memory/5012-134-0x00007FFF1A650000-0x00007FFF1A660000-memory.dmp

Filesize
64KB

Download
memory/5012-144-0x00007FFF1A650000-0x00007FFF1A660000-memory.dmp

Filesize
64KB

Download
memory/5012-145-0x00007FFF1A650000-0x00007FFF1A660000-memory.dmp

Filesize
64KB

Download
memory/5012-146-0x00007FFF1A650000-0x00007FFF1A660000-memory.dmp

Filesize
64KB

Download
memory/5012-147-0x00007FFF1A650000-0x00007FFF1A660000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads