66b7e3d8bc20a071e7fb441a9e2f029f7e57cd54e3e7fd9402addc97e48c5f18

General

Target

66b7e3d8bc20a071e7fb441a9e2f029f7e57cd54e3e7fd9402addc97e48c5f18.xls
Size

110KB
MD5

516708bdddf95ba456e7921178f64614
SHA1

7f808e15685943700e47ab8e5ef061810077339b
SHA256

66b7e3d8bc20a071e7fb441a9e2f029f7e57cd54e3e7fd9402addc97e48c5f18
SHA512

e11c4d9df6f2554e7008dba0907de53d9f50db4b9b3d57d75c7be692ad2e255ea657870c97a29153d987e3cc0e26f181c39575b161deea63d27d47c852c1ec1d
SSDEEP

3072:nhl6Nc7yRzs1H75wkZUgsQ6NqTBun5ocWVbrze7ITk9YjhJtXw0v44:hl6Nc7yRzs1H75wkZUgsQ6NqTBun5ov

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	1140	4972	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4280	4972	cmd.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3148	4972	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4972 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4972	EXCEL.EXE
4972	EXCEL.EXE
4972	EXCEL.EXE
4972	EXCEL.EXE
4972	EXCEL.EXE
4972	EXCEL.EXE
4972	EXCEL.EXE
4972	EXCEL.EXE
4972	EXCEL.EXE
4972	EXCEL.EXE
4972	EXCEL.EXE
4972	EXCEL.EXE
4972	EXCEL.EXE
4972	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 4972 wrote to memory of 1140	4972	EXCEL.EXE	cmd.exe
PID 4972 wrote to memory of 1140	4972	EXCEL.EXE	cmd.exe
PID 4972 wrote to memory of 4280	4972	EXCEL.EXE	cmd.exe
PID 4972 wrote to memory of 4280	4972	EXCEL.EXE	cmd.exe
PID 4972 wrote to memory of 3148	4972	EXCEL.EXE	cmd.exe
PID 4972 wrote to memory of 3148	4972	EXCEL.EXE	cmd.exe
PID 1140 wrote to memory of 1840	1140	cmd.exe	attrib.exe
PID 1140 wrote to memory of 1840	1140	cmd.exe	attrib.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exe

pid process

1840 attrib.exe

pid	process
1840	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\66b7e3d8bc20a071e7fb441a9e2f029f7e57cd54e3e7fd9402addc97e48c5f18.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4972

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:1140

C:\Windows\system32\attrib.exe
attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"
3⤵
- Views/modifies file attributes
PID:1840

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:4280

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:3148

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/1140-139-0x0000000000000000-mapping.dmp

Download
memory/1840-142-0x0000000000000000-mapping.dmp

Download
memory/3148-141-0x0000000000000000-mapping.dmp

Download
memory/4280-140-0x0000000000000000-mapping.dmp

Download
memory/4972-136-0x00007FF8CB670000-0x00007FF8CB680000-memory.dmp

Filesize
64KB

Download
memory/4972-137-0x00007FF8C9610000-0x00007FF8C9620000-memory.dmp

Filesize
64KB

Download
memory/4972-138-0x00007FF8C9610000-0x00007FF8C9620000-memory.dmp

Filesize
64KB

Download
memory/4972-132-0x00007FF8CB670000-0x00007FF8CB680000-memory.dmp

Filesize
64KB

Download
memory/4972-135-0x00007FF8CB670000-0x00007FF8CB680000-memory.dmp

Filesize
64KB

Download
memory/4972-134-0x00007FF8CB670000-0x00007FF8CB680000-memory.dmp

Filesize
64KB

Download
memory/4972-133-0x00007FF8CB670000-0x00007FF8CB680000-memory.dmp

Filesize
64KB

Download
memory/4972-143-0x0000017363D56000-0x0000017363D58000-memory.dmp

Filesize
8KB

Download
memory/4972-146-0x00007FF8CB670000-0x00007FF8CB680000-memory.dmp

Filesize
64KB

Download
memory/4972-145-0x00007FF8CB670000-0x00007FF8CB680000-memory.dmp

Filesize
64KB

Download
memory/4972-147-0x00007FF8CB670000-0x00007FF8CB680000-memory.dmp

Filesize
64KB

Download
memory/4972-148-0x00007FF8CB670000-0x00007FF8CB680000-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