690e2805a6aa9691f49335dc15820cb1ae5ba390a69bebe627c31d1ac4153041

General

Target

catalog-2078303863.xls
Size

367KB
MD5

e23327247bd85149505a3d31708585b7
SHA1

99af576e545b21217641c8ca2ef49b2028715b37
SHA256

a26f8d349c4a429f8a8eb4d3eaecb5366fdbfdb09d39aeba806c58e4a1f8d897
SHA512

dfc74a7eb8f9ae0a9a6427436fa8dde95e07453b7c58bc96e6d01f6ef16c0a39d211283bb00b07e457353c7cbe4d7645cf3d8e178a6115d05b1ecbc2163dcc05

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	2872	764	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2528	764	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 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

764 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
764	EXCEL.EXE
764	EXCEL.EXE
764	EXCEL.EXE
764	EXCEL.EXE
764	EXCEL.EXE
764	EXCEL.EXE
764	EXCEL.EXE
764	EXCEL.EXE
764	EXCEL.EXE
764	EXCEL.EXE
764	EXCEL.EXE
764	EXCEL.EXE
764	EXCEL.EXE
764	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 764 wrote to memory of 2872	764	EXCEL.EXE	rundll32.exe
PID 764 wrote to memory of 2872	764	EXCEL.EXE	rundll32.exe
PID 764 wrote to memory of 2528	764	EXCEL.EXE	rundll32.exe
PID 764 wrote to memory of 2528	764	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-2078303863.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:764

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2872

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2528

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/764-114-0x00007FF6EC300000-0x00007FF6EF8B6000-memory.dmp

Filesize
53.7MB

Download
memory/764-115-0x00007FF999990000-0x00007FF9999A0000-memory.dmp

Filesize
64KB

Download
memory/764-116-0x00007FF999990000-0x00007FF9999A0000-memory.dmp

Filesize
64KB

Download
memory/764-117-0x00007FF999990000-0x00007FF9999A0000-memory.dmp

Filesize
64KB

Download
memory/764-118-0x00007FF999990000-0x00007FF9999A0000-memory.dmp

Filesize
64KB

Download
memory/764-121-0x00007FF999990000-0x00007FF9999A0000-memory.dmp

Filesize
64KB

Download
memory/764-122-0x00007FF9BA6A0000-0x00007FF9BB78E000-memory.dmp

Filesize
16.9MB

Download
memory/764-123-0x00007FF9B87A0000-0x00007FF9BA695000-memory.dmp

Filesize
31.0MB

Download
memory/2528-180-0x0000000000000000-mapping.dmp

Download
memory/2872-179-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads