12a3bd739b931614da626b320973016a0b532439059071736df7e258b33e98ba

General

Target

catalog-2097704966.xls
Size

367KB
MD5

0e176677de88cf7386da5966e193f625
SHA1

8ae207b65d1fb18d53f70739a122ca149844ec04
SHA256

f4083089ebee6a2ffd3060a4dcb38ace244323975f1da010ea0d90ef33ff9166
SHA512

32d1691d5353b0392a2b5534cfb079117429282089636617e30eab011f141519cf149c2727b240611c29c14f233765361e02a42e85115919b675212794b40565

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	752	2388	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3288	2388	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

2388 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
2388	EXCEL.EXE
2388	EXCEL.EXE
2388	EXCEL.EXE
2388	EXCEL.EXE
2388	EXCEL.EXE
2388	EXCEL.EXE
2388	EXCEL.EXE
2388	EXCEL.EXE
2388	EXCEL.EXE
2388	EXCEL.EXE
2388	EXCEL.EXE
2388	EXCEL.EXE
2388	EXCEL.EXE
2388	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2388 wrote to memory of 752	2388	EXCEL.EXE	rundll32.exe
PID 2388 wrote to memory of 752	2388	EXCEL.EXE	rundll32.exe
PID 2388 wrote to memory of 3288	2388	EXCEL.EXE	rundll32.exe
PID 2388 wrote to memory of 3288	2388	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-2097704966.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2388
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\tuti.rut,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:752
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\tuti.rut1,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:3288

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/752-179-0x0000000000000000-mapping.dmp

Download
memory/2388-114-0x00007FF64E440000-0x00007FF6519F6000-memory.dmp

Filesize
53.7MB

Download
memory/2388-116-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2388-115-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2388-117-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2388-118-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2388-121-0x00007FF8383E0000-0x00007FF8383F0000-memory.dmp

Filesize
64KB

Download
memory/2388-122-0x00007FF858E20000-0x00007FF859F0E000-memory.dmp

Filesize
16.9MB

Download
memory/2388-123-0x000002441CB30000-0x000002441EA25000-memory.dmp

Filesize
31.0MB

Download
memory/3288-180-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads