11a9dda5ef6f101924c49ecde5c9a00c5c776fb71701eda53dbc83499920eb8c

General

Target

catalog-1911367047.xls
Size

367KB
MD5

3f61d6426515d7ac0ba8fdfb90ef78c2
SHA1

0c5c7265ad011416289b1d6a95c9581cab58033b
SHA256

5a4108e08f3a796a4e622fa488550b79139d45a80a6949449fc516713dbb728d
SHA512

b4409c6dde61d8d83803ae023ef8eed2f894ead6b30c54548e6b04b686f5b2e69bf440e4cd199c7eda69d8f324725013eb47387a9756a9f863cce0abbfdeef09

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	2272	804	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3168	804	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

804 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE
804	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 804 wrote to memory of 2272	804	EXCEL.EXE	rundll32.exe
PID 804 wrote to memory of 2272	804	EXCEL.EXE	rundll32.exe
PID 804 wrote to memory of 3168	804	EXCEL.EXE	rundll32.exe
PID 804 wrote to memory of 3168	804	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-1911367047.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:804

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2272

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3168

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/804-114-0x00007FF6011A0000-0x00007FF604756000-memory.dmp

Filesize
53.7MB

Download
memory/804-115-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp

Filesize
64KB

Download
memory/804-116-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp

Filesize
64KB

Download
memory/804-117-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp

Filesize
64KB

Download
memory/804-118-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp

Filesize
64KB

Download
memory/804-119-0x00007FFB7C310000-0x00007FFB7C320000-memory.dmp

Filesize
64KB

Download
memory/804-122-0x00007FFB9CFE0000-0x00007FFB9E0CE000-memory.dmp

Filesize
16.9MB

Download
memory/804-123-0x00007FFB9B0E0000-0x00007FFB9CFD5000-memory.dmp

Filesize
31.0MB

Download
memory/2272-179-0x0000000000000000-mapping.dmp

Download
memory/3168-180-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads