a05844d21f0f0368b9d5a94f2762da6747568bde70395abd6f59a401edd3cc1b

General

Target

catalog-295819331.xls
Size

367KB
MD5

80a1976552ba348d725db1c3c3ff5a14
SHA1

27963b4571a46f1cbd4dc9af90681d16d77e4ef8
SHA256

4cb5af26782cfc92d9b813c409352532e5149a3c2b80bdeac5ac1228da568522
SHA512

30545af59e4b8e9ee70fe398751b3d6333b50d9cf7745cb5662617c5588ccea29717f8ad1aa59b5e8f355417471a7324bd5e31fbf66388cc7447fc3ac9d33c7d

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	2164	3560	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3856	3560	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

3560 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3560	EXCEL.EXE
3560	EXCEL.EXE
3560	EXCEL.EXE
3560	EXCEL.EXE
3560	EXCEL.EXE
3560	EXCEL.EXE
3560	EXCEL.EXE
3560	EXCEL.EXE
3560	EXCEL.EXE
3560	EXCEL.EXE
3560	EXCEL.EXE
3560	EXCEL.EXE
3560	EXCEL.EXE
3560	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3560 wrote to memory of 2164	3560	EXCEL.EXE	rundll32.exe
PID 3560 wrote to memory of 2164	3560	EXCEL.EXE	rundll32.exe
PID 3560 wrote to memory of 3856	3560	EXCEL.EXE	rundll32.exe
PID 3560 wrote to memory of 3856	3560	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-295819331.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3560
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\tuti.rut,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:2164
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\tuti.rut1,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:3856

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2164-179-0x0000000000000000-mapping.dmp

Download
memory/3560-114-0x00007FF611670000-0x00007FF614C26000-memory.dmp

Filesize
53.7MB

Download
memory/3560-116-0x00007FF8CDBE0000-0x00007FF8CDBF0000-memory.dmp

Filesize
64KB

Download
memory/3560-115-0x00007FF8CDBE0000-0x00007FF8CDBF0000-memory.dmp

Filesize
64KB

Download
memory/3560-117-0x00007FF8CDBE0000-0x00007FF8CDBF0000-memory.dmp

Filesize
64KB

Download
memory/3560-118-0x00007FF8CDBE0000-0x00007FF8CDBF0000-memory.dmp

Filesize
64KB

Download
memory/3560-122-0x00007FF8CDBE0000-0x00007FF8CDBF0000-memory.dmp

Filesize
64KB

Download
memory/3560-121-0x00007FF8EE730000-0x00007FF8EF81E000-memory.dmp

Filesize
16.9MB

Download
memory/3560-123-0x000002343CBF0000-0x000002343EAE5000-memory.dmp

Filesize
31.0MB

Download
memory/3856-180-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads