d149e83c2ec92e82adbf1b35214e1f202c39d1cee5d006f74e03248adc50c833

General

Target

catalog-245528355.xls
Size

367KB
MD5

a0d337478fc0d8357ff2ecf75c65bca7
SHA1

b7f9960c2fb8fe6d6452b7b117a6ecc38acc5df6
SHA256

c23a7cbcf95daaef69522f28b4d9c9b775e30f767188749bf658f7d183e2025e
SHA512

870ed4aa0e5aa4c61823c1bb794e9a5348dd83ff961203eab169c99079fc2d0058dfe31431ba63155a54bfb1ec65341ad2a502b3bddd7e0331a29468c7ead332

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	1068	2204	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2740	2204	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 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

2204 EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

Processes:

EXCEL.EXE

pid	process
2204	EXCEL.EXE
2204	EXCEL.EXE
2204	EXCEL.EXE
2204	EXCEL.EXE
2204	EXCEL.EXE
2204	EXCEL.EXE
2204	EXCEL.EXE
2204	EXCEL.EXE
2204	EXCEL.EXE
2204	EXCEL.EXE
2204	EXCEL.EXE
2204	EXCEL.EXE
2204	EXCEL.EXE
2204	EXCEL.EXE
2204	EXCEL.EXE
2204	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2204 wrote to memory of 1068	2204	EXCEL.EXE	rundll32.exe
PID 2204 wrote to memory of 1068	2204	EXCEL.EXE	rundll32.exe
PID 2204 wrote to memory of 2740	2204	EXCEL.EXE	rundll32.exe
PID 2204 wrote to memory of 2740	2204	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-245528355.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2204

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1068

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2740

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/1068-179-0x0000000000000000-mapping.dmp

Download
memory/2204-114-0x00007FF60F300000-0x00007FF6128B6000-memory.dmp

Filesize
53.7MB

Download
memory/2204-116-0x00007FF800890000-0x00007FF8008A0000-memory.dmp

Filesize
64KB

Download
memory/2204-115-0x00007FF800890000-0x00007FF8008A0000-memory.dmp

Filesize
64KB

Download
memory/2204-117-0x00007FF800890000-0x00007FF8008A0000-memory.dmp

Filesize
64KB

Download
memory/2204-118-0x00007FF800890000-0x00007FF8008A0000-memory.dmp

Filesize
64KB

Download
memory/2204-121-0x00007FF800890000-0x00007FF8008A0000-memory.dmp

Filesize
64KB

Download
memory/2204-122-0x00007FF820F80000-0x00007FF82206E000-memory.dmp

Filesize
16.9MB

Download
memory/2204-123-0x00007FF81EFD0000-0x00007FF820EC5000-memory.dmp

Filesize
31.0MB

Download
memory/2740-180-0x0000000000000000-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