796465749f8701764362673cce8967449fcbe5df95fd172fc7d34fdf448ec568

General

Target

catalog-274433653.xls
Size

367KB
MD5

7311727df7529a293920042610dafa44
SHA1

46f47db43251e6e88a619c0ec08daed44e18d13c
SHA256

a2b9ede8864b03fbefae06fcbfc6f5bb6a780f98833c6abb3afb564a60b6bbc5
SHA512

5aef6d621fb68b081d070f0e90b1c24260bf833115d2aaf173c0a2125269219aad9d0c660b834700c5c52ea25bc244ed5c60358d334b6729ac680a83caed55ac

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	3880	4808	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4060	4808	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\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4808 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE
4808	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4808 wrote to memory of 3880	4808	EXCEL.EXE	rundll32.exe
PID 4808 wrote to memory of 3880	4808	EXCEL.EXE	rundll32.exe
PID 4808 wrote to memory of 4060	4808	EXCEL.EXE	rundll32.exe
PID 4808 wrote to memory of 4060	4808	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-274433653.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4808

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3880

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4060

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

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Downloads

memory/3880-179-0x0000000000000000-mapping.dmp

Download
memory/4060-180-0x0000000000000000-mapping.dmp

Download
memory/4808-114-0x00007FF7D2DE0000-0x00007FF7D6396000-memory.dmp

Filesize
53.7MB

Download
memory/4808-115-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4808-116-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4808-117-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4808-118-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4808-119-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4808-122-0x00007FFD8EE60000-0x00007FFD8FF4E000-memory.dmp

Filesize
16.9MB

Download
memory/4808-123-0x000002B974E20000-0x000002B976D15000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads