4558f033978faa42f216c6b8959640dc350777e96dd78eede5cb5a2ab33ae3a0

General

Target

17f224a58860a89b42f99a163f53b99c.xls
Size

96KB
MD5

17f224a58860a89b42f99a163f53b99c
SHA1

dd39cb90f95df58d207fa82c7788832388f2d9de
SHA256

4558f033978faa42f216c6b8959640dc350777e96dd78eede5cb5a2ab33ae3a0
SHA512

88f85a1940f76a6db7596dfc629d57ab84653cc5e687cb105110c2b0bc9a6fb421d510f7e70b5594836dc9a5352217e6409ccaca43e39e43d299f31df8c05cb7
SSDEEP

1536:TQQQWh8teVQczsQ8PzS1bLvJkqeV+yEGTeHByDoP12jcc0lbxOvTgZgm/M10QWK+:exC12jcc0lbxOrinJtXwz

Score

10^/10

macro xlm

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	872	4124	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4716	4124	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	448	4124	cmd.exe	EXCEL.EXE

Suspicious Office macro 1 IoCs

Office document equipped with 4.0 macros.

macro xlm

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\17f224a58860a89b42f99a163f53b99c.xls	office_xlm_macros

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\55C65E00\:Zone.Identifier:$DATA EXCEL.EXE
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4124 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4124 EXCEL.EXE
4124 EXCEL.EXE

description	ioc	process
File created	C:\Users\Admin\AppData\Local\Temp\55C65E00\:Zone.Identifier:$DATA	EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE
4124	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4124 wrote to memory of 872	4124	EXCEL.EXE	cmd.exe
PID 4124 wrote to memory of 872	4124	EXCEL.EXE	cmd.exe
PID 4124 wrote to memory of 4716	4124	EXCEL.EXE	cmd.exe
PID 4124 wrote to memory of 4716	4124	EXCEL.EXE	cmd.exe
PID 4124 wrote to memory of 448	4124	EXCEL.EXE	cmd.exe
PID 4124 wrote to memory of 448	4124	EXCEL.EXE	cmd.exe
PID 872 wrote to memory of 3580	872	cmd.exe	attrib.exe
PID 872 wrote to memory of 3580	872	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

3580 attrib.exe

pid	process
3580	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\17f224a58860a89b42f99a163f53b99c.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4124

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:872

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:3580

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:4716

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:448

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

C:\Users\Admin\AppData\Local\Temp\17f224a58860a89b42f99a163f53b99c.xls
Filesize
124KB

MD5
bf34b5fe51b149d86ea375a17505c54d

SHA1
e8fbf0ca7e7885d25df7c3b2434771bc6a801714

SHA256
b70e120c6526876238ab0637a9a50b794322a3e618109231aab80d4885f0efde

SHA512
d5463cf9545f9088c3a1006fa801cf4c5a4dc098c9044b6003ef6bb76ad2c696800b2be518f6e3b4cbc2ba55f217ff9b52743439d5d367642f25539d8dc1fab4

Download Submit
memory/4124-133-0x00007FFB76CF0000-0x00007FFB76D00000-memory.dmp

Filesize
64KB

Download
memory/4124-135-0x00007FFB76CF0000-0x00007FFB76D00000-memory.dmp

Filesize
64KB

Download
memory/4124-134-0x00007FFB76CF0000-0x00007FFB76D00000-memory.dmp

Filesize
64KB

Download
memory/4124-136-0x00007FFB76CF0000-0x00007FFB76D00000-memory.dmp

Filesize
64KB

Download
memory/4124-137-0x00007FFB76CF0000-0x00007FFB76D00000-memory.dmp

Filesize
64KB

Download
memory/4124-138-0x00007FFB74840000-0x00007FFB74850000-memory.dmp

Filesize
64KB

Download
memory/4124-139-0x00007FFB74840000-0x00007FFB74850000-memory.dmp

Filesize
64KB

Download
memory/4124-234-0x00007FFB76CF0000-0x00007FFB76D00000-memory.dmp

Filesize
64KB

Download
memory/4124-235-0x00007FFB76CF0000-0x00007FFB76D00000-memory.dmp

Filesize
64KB

Download
memory/4124-236-0x00007FFB76CF0000-0x00007FFB76D00000-memory.dmp

Filesize
64KB

Download
memory/4124-237-0x00007FFB76CF0000-0x00007FFB76D00000-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