40b4f28e570212d31feba7afe60edd5dde669dc01c7994c7a819fcf778125520

General

Target

catalog-2030122485.xls
Size

367KB
MD5

84bd232f6e7b2e8d1de94d149203ef45
SHA1

d9d4e395a1c2b7d36091665b8734ab553525c207
SHA256

c003c1ac0e1eb457de15bd41ac146519c2aa35effff53e4993527495836f7def
SHA512

12a4e07a1ddace61682fd9b67ce93a611ac3293f6d53247a59b1b819fe02beded432f89238ff0c90284fa17c7c263c2c4e142d0f4e46664acb30687748861a92

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	1348	3016	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2752	3016	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

3016 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3016 wrote to memory of 1348	3016	EXCEL.EXE	rundll32.exe
PID 3016 wrote to memory of 1348	3016	EXCEL.EXE	rundll32.exe
PID 3016 wrote to memory of 2752	3016	EXCEL.EXE	rundll32.exe
PID 3016 wrote to memory of 2752	3016	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-2030122485.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3016

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1348

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2752

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

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Downloads

memory/1348-179-0x0000000000000000-mapping.dmp

Download
memory/2752-180-0x0000000000000000-mapping.dmp

Download
memory/3016-114-0x00007FF72F090000-0x00007FF732646000-memory.dmp

Filesize
53.7MB

Download
memory/3016-116-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3016-115-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3016-118-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3016-117-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3016-121-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3016-122-0x00007FFDEAE20000-0x00007FFDEBF0E000-memory.dmp

Filesize
16.9MB

Download
memory/3016-123-0x000001CD6C560000-0x000001CD6E455000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads