4821cfcfaf6e685f7e24df77910ddd0dfad19224d5e7bbe596cd860d943ffbfd

General

Target

4821cfcfaf6e685f7e24df77910ddd0dfad19224d5e7bbe596cd860d943ffbfd.xls
Size

155KB
MD5

254ee0cd963a1500de7f11d4155e9179
SHA1

ff68e4f84e649e45728d89f19a09d128a795d320
SHA256

4821cfcfaf6e685f7e24df77910ddd0dfad19224d5e7bbe596cd860d943ffbfd
SHA512

c42a64427cd4a979c53919eec57c1750cbd8794187244ab7a3435d289b9e65a053d6810d5ec040eb260f902bb5c9a2a3e7b98d3778fe25c4bb4c85338c35bd6f
SSDEEP

3072:GXrRuXDWVbrzQ7k5xTkcyYJtXw65kAPp6:Oo4fR

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	4084	3548	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2392	3548	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	204	3548	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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\EAB75E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3548 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\EAB75E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

Processes:

EXCEL.EXE

pid	process
3548	EXCEL.EXE
3548	EXCEL.EXE
3548	EXCEL.EXE
3548	EXCEL.EXE
3548	EXCEL.EXE
3548	EXCEL.EXE
3548	EXCEL.EXE
3548	EXCEL.EXE
3548	EXCEL.EXE
3548	EXCEL.EXE
3548	EXCEL.EXE
3548	EXCEL.EXE
3548	EXCEL.EXE
3548	EXCEL.EXE
3548	EXCEL.EXE
3548	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 3548 wrote to memory of 4084	3548	EXCEL.EXE	cmd.exe
PID 3548 wrote to memory of 4084	3548	EXCEL.EXE	cmd.exe
PID 3548 wrote to memory of 204	3548	EXCEL.EXE	cmd.exe
PID 3548 wrote to memory of 204	3548	EXCEL.EXE	cmd.exe
PID 3548 wrote to memory of 2392	3548	EXCEL.EXE	cmd.exe
PID 3548 wrote to memory of 2392	3548	EXCEL.EXE	cmd.exe
PID 4084 wrote to memory of 3680	4084	cmd.exe	attrib.exe
PID 4084 wrote to memory of 3680	4084	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

3680 attrib.exe

pid	process
3680	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\4821cfcfaf6e685f7e24df77910ddd0dfad19224d5e7bbe596cd860d943ffbfd.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:3548

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:4084

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:3680

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:2392

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:204

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

Replay Monitor

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Downloads

memory/204-140-0x0000000000000000-mapping.dmp

Download
memory/2392-141-0x0000000000000000-mapping.dmp

Download
memory/3548-138-0x00007FFAB5780000-0x00007FFAB5790000-memory.dmp

Filesize
64KB

Download
memory/3548-135-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmp

Filesize
64KB

Download
memory/3548-136-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmp

Filesize
64KB

Download
memory/3548-137-0x00007FFAB5780000-0x00007FFAB5790000-memory.dmp

Filesize
64KB

Download
memory/3548-132-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmp

Filesize
64KB

Download
memory/3548-134-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmp

Filesize
64KB

Download
memory/3548-133-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmp

Filesize
64KB

Download
memory/3548-144-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmp

Filesize
64KB

Download
memory/3548-145-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmp

Filesize
64KB

Download
memory/3548-146-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmp

Filesize
64KB

Download
memory/3548-147-0x00007FFAB7CB0000-0x00007FFAB7CC0000-memory.dmp

Filesize
64KB

Download
memory/3680-142-0x0000000000000000-mapping.dmp

Download
memory/4084-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads