aa960c7456fb4f3ab04a5c4bbb700f4275d4da9f2a4a7e47461762d20d3df64e

General

Target

catalog-2126809506.xls
Size

367KB
MD5

396ab95aa59bc4ffb902be33b907ad71
SHA1

8f5b7c9ba6cc318d9b5a80e2086d3647de06f5ba
SHA256

f5c0cd884f0ff921534c2fa1929c5458860ee75b1bee4f5377e2771e2d559fa4
SHA512

e97ffdad35cf03910e043cd887145252bfea5e2297f68d41e6d04e69fe68bdaee21f2383888b675baeffa21983b1ace3f0f7f0d3386daea80f1bdf256c6d42a4

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	3616	808	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2700	808	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

808 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE
808	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 808 wrote to memory of 3616	808	EXCEL.EXE	rundll32.exe
PID 808 wrote to memory of 3616	808	EXCEL.EXE	rundll32.exe
PID 808 wrote to memory of 2700	808	EXCEL.EXE	rundll32.exe
PID 808 wrote to memory of 2700	808	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-2126809506.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:808

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3616

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2700

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/808-114-0x00007FF73BF60000-0x00007FF73F516000-memory.dmp

Filesize
53.7MB

Download
memory/808-116-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/808-115-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/808-117-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/808-118-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/808-121-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/808-122-0x00007FFA7A1E0000-0x00007FFA7B2CE000-memory.dmp

Filesize
16.9MB

Download
memory/808-123-0x0000023370DD0000-0x0000023372CC5000-memory.dmp

Filesize
31.0MB

Download
memory/2700-180-0x0000000000000000-mapping.dmp

Download
memory/3616-179-0x0000000000000000-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