91e83311bfbc9bf1d667087a2773f80c46e5fd5c36b83315f7401f90e82d6d4a

General

Target

catalog-2106987967.xls
Size

367KB
MD5

da6fcc74b5353a2e865b1effbfe2ff6d
SHA1

166c15b9f39c99aaa1203440e6e3beccd86cf2d8
SHA256

50191bc455248553b3122cc7d3fbae170be31628d466786b60839a674e3c2e3d
SHA512

3827d5db48f0ad6c96b27108c118fb29cd0b5b4ab2abc5ed896f90aa83326c0b8f95e40e6eeb3e6e0a505d3b7b8efbd09f06bdc611dfa72c37e803a679af3c81

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	2708	3724	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3404	3724	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

3724 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE
3724	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3724 wrote to memory of 2708	3724	EXCEL.EXE	rundll32.exe
PID 3724 wrote to memory of 2708	3724	EXCEL.EXE	rundll32.exe
PID 3724 wrote to memory of 3404	3724	EXCEL.EXE	rundll32.exe
PID 3724 wrote to memory of 3404	3724	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-2106987967.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3724

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2708

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3404

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

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Downloads

memory/2708-179-0x0000000000000000-mapping.dmp

Download
memory/3404-180-0x0000000000000000-mapping.dmp

Download
memory/3724-114-0x00007FF7EDC60000-0x00007FF7F1216000-memory.dmp

Filesize
53.7MB

Download
memory/3724-115-0x00007FFA247C0000-0x00007FFA247D0000-memory.dmp

Filesize
64KB

Download
memory/3724-116-0x00007FFA247C0000-0x00007FFA247D0000-memory.dmp

Filesize
64KB

Download
memory/3724-117-0x00007FFA247C0000-0x00007FFA247D0000-memory.dmp

Filesize
64KB

Download
memory/3724-118-0x00007FFA247C0000-0x00007FFA247D0000-memory.dmp

Filesize
64KB

Download
memory/3724-119-0x00007FFA247C0000-0x00007FFA247D0000-memory.dmp

Filesize
64KB

Download
memory/3724-122-0x00007FFA44D60000-0x00007FFA45E4E000-memory.dmp

Filesize
16.9MB

Download
memory/3724-123-0x000002656EB50000-0x0000026570A45000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads