971e9ed20bbc21ff363d83cba1d5f828938ba7d77d8eebe762bda1fc8dd691b0

General

Target

971e9ed20bbc21ff363d83cba1d5f828938ba7d77d8eebe762bda1fc8dd691b0.xls
Size

186KB
MD5

412b833c5c53e1a3a25a529fb6c99a80
SHA1

47d8dd1eb55f7ea4c523de40aeeb838bc2f656e7
SHA256

971e9ed20bbc21ff363d83cba1d5f828938ba7d77d8eebe762bda1fc8dd691b0
SHA512

bd1f68e4848200f3eb4484b17ead293105818ec5ac9df17ab5d404bae8d924de62b708d3f06334c2c4b50d8ad6c0deffa3c1c299783fd31bbb45678470aaff18
SSDEEP

3072:VBxKvbvVEZ1htyA1Z+M9+Pg87RyrKjCWVbrzQ7ITkjwSwWE2JtXwhw:kBk1htPIyuYmE

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	3600	4532	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	368	4532	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4292	4532	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

NTFS ADS 1 IoCs

Processes:

EXCEL.EXE

description ioc process

File created C:\Users\Admin\AppData\Local\Temp\FF965E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4532 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\FF965E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4532	EXCEL.EXE
4532	EXCEL.EXE
4532	EXCEL.EXE
4532	EXCEL.EXE
4532	EXCEL.EXE
4532	EXCEL.EXE
4532	EXCEL.EXE
4532	EXCEL.EXE
4532	EXCEL.EXE
4532	EXCEL.EXE
4532	EXCEL.EXE
4532	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4532 wrote to memory of 3600	4532	EXCEL.EXE	cmd.exe
PID 4532 wrote to memory of 3600	4532	EXCEL.EXE	cmd.exe
PID 4532 wrote to memory of 368	4532	EXCEL.EXE	cmd.exe
PID 4532 wrote to memory of 368	4532	EXCEL.EXE	cmd.exe
PID 4532 wrote to memory of 4292	4532	EXCEL.EXE	cmd.exe
PID 4532 wrote to memory of 4292	4532	EXCEL.EXE	cmd.exe
PID 3600 wrote to memory of 208	3600	cmd.exe	attrib.exe
PID 3600 wrote to memory of 208	3600	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

208 attrib.exe

pid	process
208	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\971e9ed20bbc21ff363d83cba1d5f828938ba7d77d8eebe762bda1fc8dd691b0.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:4532

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:3600

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:208

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:368

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:4292

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

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Downloads

memory/208-143-0x0000000000000000-mapping.dmp

Download
memory/368-141-0x0000000000000000-mapping.dmp

Download
memory/3600-140-0x0000000000000000-mapping.dmp

Download
memory/4292-142-0x0000000000000000-mapping.dmp

Download
memory/4532-136-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

Filesize
64KB

Download
memory/4532-137-0x00007FFE81370000-0x00007FFE81380000-memory.dmp

Filesize
64KB

Download
memory/4532-138-0x00007FFE81370000-0x00007FFE81380000-memory.dmp

Filesize
64KB

Download
memory/4532-139-0x0000018F3D490000-0x0000018F3D492000-memory.dmp

Filesize
8KB

Download
memory/4532-132-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

Filesize
64KB

Download
memory/4532-135-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

Filesize
64KB

Download
memory/4532-134-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

Filesize
64KB

Download
memory/4532-133-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

Filesize
64KB

Download
memory/4532-144-0x0000018F3D490000-0x0000018F3D492000-memory.dmp

Filesize
8KB

Download
memory/4532-146-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

Filesize
64KB

Download
memory/4532-147-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

Filesize
64KB

Download
memory/4532-148-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

Filesize
64KB

Download
memory/4532-149-0x00007FFE83C30000-0x00007FFE83C40000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads