339c3bc40f9935d1be78ea13d36b331c82e5cb8fecf0455691592700844a7c79

General

Target

catalog-241005140.xls
Size

367KB
MD5

688ad6783056fd0380200879beb0e915
SHA1

f3b9a70aac8dabbd46fa22d2f95d96faa911fec8
SHA256

589255722398bef81da16a4b9e34e7d3b23666ba55ecd6bc90885d58fc63f2c4
SHA512

3712c554d1d234bfa2a98600c565975a46a7b32b9f9a4270c96f5e15836834334db4f9cfee04e4c707129957559bdd6d74bb82ab5ab6a5c5171fda64c2e1e6f1

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	2344	3260	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2516	3260	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

3260 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3260	EXCEL.EXE
3260	EXCEL.EXE
3260	EXCEL.EXE
3260	EXCEL.EXE
3260	EXCEL.EXE
3260	EXCEL.EXE
3260	EXCEL.EXE
3260	EXCEL.EXE
3260	EXCEL.EXE
3260	EXCEL.EXE
3260	EXCEL.EXE
3260	EXCEL.EXE
3260	EXCEL.EXE
3260	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3260 wrote to memory of 2344	3260	EXCEL.EXE	rundll32.exe
PID 3260 wrote to memory of 2344	3260	EXCEL.EXE	rundll32.exe
PID 3260 wrote to memory of 2516	3260	EXCEL.EXE	rundll32.exe
PID 3260 wrote to memory of 2516	3260	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-241005140.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3260

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2344

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2516

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/2344-179-0x0000000000000000-mapping.dmp

Download
memory/2516-180-0x0000000000000000-mapping.dmp

Download
memory/3260-114-0x00007FF7AA140000-0x00007FF7AD6F6000-memory.dmp

Filesize
53.7MB

Download
memory/3260-116-0x00007FFA70CE0000-0x00007FFA70CF0000-memory.dmp

Filesize
64KB

Download
memory/3260-115-0x00007FFA70CE0000-0x00007FFA70CF0000-memory.dmp

Filesize
64KB

Download
memory/3260-117-0x00007FFA70CE0000-0x00007FFA70CF0000-memory.dmp

Filesize
64KB

Download
memory/3260-118-0x00007FFA70CE0000-0x00007FFA70CF0000-memory.dmp

Filesize
64KB

Download
memory/3260-122-0x00007FFA70CE0000-0x00007FFA70CF0000-memory.dmp

Filesize
64KB

Download
memory/3260-121-0x00007FFA91380000-0x00007FFA9246E000-memory.dmp

Filesize
16.9MB

Download
memory/3260-123-0x00007FFA8F480000-0x00007FFA91375000-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