a138c7938e093fdea439fc17ca28f78d1fa6ca217c971773c3f25a94992cb010

General

Target

catalog-236752457.xls
Size

367KB
MD5

4f8bff7047f1dc6470deda5dc56eaa38
SHA1

ea318203289936b2facec1957f662baa50d6d5e4
SHA256

501d71d94f7dd2de7abecdb76990f964a12c56795c3b4bf592a289fb55bac8b4
SHA512

904c5622c8f8172ef28fe90321e7aae88f6050938ba85518023620a344fcaede45afa920c1336efc668dd5c09eb822ce400b86fec69b17bcd32538193e98bd87

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exerundll32.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	3144	3896	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4068	3896	rundll32.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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3896 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3896 wrote to memory of 3144	3896	EXCEL.EXE	rundll32.exe
PID 3896 wrote to memory of 3144	3896	EXCEL.EXE	rundll32.exe
PID 3896 wrote to memory of 4068	3896	EXCEL.EXE	rundll32.exe
PID 3896 wrote to memory of 4068	3896	EXCEL.EXE	rundll32.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\catalog-236752457.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3896

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3144

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4068

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/3144-179-0x0000000000000000-mapping.dmp

Download
memory/3896-114-0x00007FF70A400000-0x00007FF70D9B6000-memory.dmp

Filesize
53.7MB

Download
memory/3896-115-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3896-116-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3896-117-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3896-118-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3896-122-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3896-121-0x00007FFA28EA0000-0x00007FFA29F8E000-memory.dmp

Filesize
16.9MB

Download
memory/3896-123-0x00007FFA26EE0000-0x00007FFA28DD5000-memory.dmp

Filesize
31.0MB

Download
memory/4068-180-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads