f4ae9632771230fb20614ff160fc95428f21e2ccd16222d9f2c959d315c194b1

General

Target

catalog-291062789.xls
Size

367KB
MD5

4ba72be6f26c2b28e8d5a3c06350f794
SHA1

03ad00c7cdc473c87df5261a851dbd7cd6a57de6
SHA256

36c9edf4345834168b730939166bc4da13016112d2a8c7b49ef316b51f46b048
SHA512

fc197877c42649622546d533eb6ad4c46408eee308f4f1b9e9a46a0a5657b959206ed85ba2a146470be98657d680128ed6a2a8b202524ae95eaf777e43dc261e

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	1812	3896	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1552	3896	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

3896 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3896 wrote to memory of 1812	3896	EXCEL.EXE	rundll32.exe
PID 3896 wrote to memory of 1812	3896	EXCEL.EXE	rundll32.exe
PID 3896 wrote to memory of 1552	3896	EXCEL.EXE	rundll32.exe
PID 3896 wrote to memory of 1552	3896	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-291062789.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3896
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\tuti.rut,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:1812
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\tuti.rut1,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:1552

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

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Downloads

memory/1552-180-0x0000000000000000-mapping.dmp

Download
memory/1812-179-0x0000000000000000-mapping.dmp

Download
memory/3896-114-0x00007FF70A400000-0x00007FF70D9B6000-memory.dmp

Filesize
53.7MB

Download
memory/3896-116-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3896-115-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3896-117-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3896-118-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3896-121-0x00007FFA08250000-0x00007FFA08260000-memory.dmp

Filesize
64KB

Download
memory/3896-122-0x00007FFA28DE0000-0x00007FFA29ECE000-memory.dmp

Filesize
16.9MB

Download
memory/3896-123-0x00007FFA26EE0000-0x00007FFA28DD5000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads