a7f76f8da81c55bfec64abfee59393222011f4b649ccf454aa96f429c0580ffe

General

Target

catalog-2002334876.xls
Size

367KB
MD5

0e08bdad75c460921f3698efdec6f8b5
SHA1

20303b3b0a8a750b79f11323154031bc00a5ffe8
SHA256

38378a89f23b06462932894c7ce984cd0dc2dde0460aee62789e46389b759fc8
SHA512

74948e4a205b2e9437415bf81b1af7f95a0ec190fbfffb269278d90ddce5562d5c9f6667e243a52985815d3389c8b77bb60bff39d2f59672f467a8ead8b91f5a

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	1432	672	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4008	672	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

672 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE
672	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 672 wrote to memory of 1432	672	EXCEL.EXE	rundll32.exe
PID 672 wrote to memory of 1432	672	EXCEL.EXE	rundll32.exe
PID 672 wrote to memory of 4008	672	EXCEL.EXE	rundll32.exe
PID 672 wrote to memory of 4008	672	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-2002334876.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:672

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1432

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4008

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/672-114-0x00007FF74E7D0000-0x00007FF751D86000-memory.dmp

Filesize
53.7MB

Download
memory/672-115-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp

Filesize
64KB

Download
memory/672-116-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp

Filesize
64KB

Download
memory/672-117-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp

Filesize
64KB

Download
memory/672-118-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp

Filesize
64KB

Download
memory/672-121-0x00007FF8ACF90000-0x00007FF8ACFA0000-memory.dmp

Filesize
64KB

Download
memory/672-122-0x00007FF8CD7B0000-0x00007FF8CE89E000-memory.dmp

Filesize
16.9MB

Download
memory/672-123-0x00007FF8CB8B0000-0x00007FF8CD7A5000-memory.dmp

Filesize
31.0MB

Download
memory/1432-179-0x0000000000000000-mapping.dmp

Download
memory/4008-180-0x0000000000000000-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