b14d9418b6cb47b3ab9a4229a3744aa0a7d4b43a51cf82a3662d6fb8f343adf6

General

Target

catalog-1991842465.xls
Size

367KB
MD5

72759ddc7fbcb48f6ef2f44f42672d1a
SHA1

38a1e787b4462c596b29db51a0ff6e7ac96178d3
SHA256

f6adcf3e81309cade19daea5b1264bd7c230c72016314bc4cd5d49a1b04e2ff6
SHA512

e707d19cd662087641c5c9faa2170386cb651c71fcd2a8399be496d420fe2478a9d52348a82ed9e365a2e4789bd394a84eb2f3fe95a030d72c1e833787cedec1

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	68	852	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2628	852	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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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

852 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

852 EXCEL.EXE
852 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE
852	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 852 wrote to memory of 68	852	EXCEL.EXE	rundll32.exe
PID 852 wrote to memory of 68	852	EXCEL.EXE	rundll32.exe
PID 852 wrote to memory of 2628	852	EXCEL.EXE	rundll32.exe
PID 852 wrote to memory of 2628	852	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-1991842465.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:852

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:68

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2628

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

Loading Replay Monitor...

Downloads

memory/68-179-0x0000000000000000-mapping.dmp

Download
memory/852-114-0x00007FF7B1150000-0x00007FF7B4706000-memory.dmp

Filesize
53.7MB

Download
memory/852-115-0x00007FFA6EBC0000-0x00007FFA6EBD0000-memory.dmp

Filesize
64KB

Download
memory/852-116-0x00007FFA6EBC0000-0x00007FFA6EBD0000-memory.dmp

Filesize
64KB

Download
memory/852-117-0x00007FFA6EBC0000-0x00007FFA6EBD0000-memory.dmp

Filesize
64KB

Download
memory/852-118-0x00007FFA6EBC0000-0x00007FFA6EBD0000-memory.dmp

Filesize
64KB

Download
memory/852-121-0x00007FFA6EBC0000-0x00007FFA6EBD0000-memory.dmp

Filesize
64KB

Download
memory/852-122-0x00007FFA8F8A0000-0x00007FFA9098E000-memory.dmp

Filesize
16.9MB

Download
memory/852-123-0x00007FFA8D9A0000-0x00007FFA8F895000-memory.dmp

Filesize
31.0MB

Download
memory/2628-180-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads