608bdfd3e0badc9647cdfb15f80e08304799b61ca4d7aebaebbe7dc2a140f995

General

Target

catalog-2087191249.xls
Size

367KB
MD5

3ad535735bd6c4f47802a9264f28da1f
SHA1

71240b697a58274c4d1843c0c41742419a901ce9
SHA256

fc76befecfbf3d53e5dc772d2b4bc44b20966e892d10f1cc2e56e4760f478a6a
SHA512

43bd9e42f0a6b2b8197ca8c8006746d4760fe8e0b6b48ca8d1ff660875adffe514f2e84198830b4dbd2207087f79f5c5fcfaedcc418a86717bb9b71f451dc356

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	4076	736	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2820	736	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\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

736 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
736	EXCEL.EXE
736	EXCEL.EXE
736	EXCEL.EXE
736	EXCEL.EXE
736	EXCEL.EXE
736	EXCEL.EXE
736	EXCEL.EXE
736	EXCEL.EXE
736	EXCEL.EXE
736	EXCEL.EXE
736	EXCEL.EXE
736	EXCEL.EXE
736	EXCEL.EXE
736	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 736 wrote to memory of 4076	736	EXCEL.EXE	rundll32.exe
PID 736 wrote to memory of 4076	736	EXCEL.EXE	rundll32.exe
PID 736 wrote to memory of 2820	736	EXCEL.EXE	rundll32.exe
PID 736 wrote to memory of 2820	736	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-2087191249.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:736

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4076

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2820

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

Replay Monitor

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Downloads

memory/736-114-0x00007FF6A6BB0000-0x00007FF6AA166000-memory.dmp

Filesize
53.7MB

Download
memory/736-115-0x00007FFF79C30000-0x00007FFF79C40000-memory.dmp

Filesize
64KB

Download
memory/736-116-0x00007FFF79C30000-0x00007FFF79C40000-memory.dmp

Filesize
64KB

Download
memory/736-117-0x00007FFF79C30000-0x00007FFF79C40000-memory.dmp

Filesize
64KB

Download
memory/736-118-0x00007FFF79C30000-0x00007FFF79C40000-memory.dmp

Filesize
64KB

Download
memory/736-121-0x00007FFF79C30000-0x00007FFF79C40000-memory.dmp

Filesize
64KB

Download
memory/736-122-0x00007FFF9B2E0000-0x00007FFF9C3CE000-memory.dmp

Filesize
16.9MB

Download
memory/736-123-0x00007FFF993E0000-0x00007FFF9B2D5000-memory.dmp

Filesize
31.0MB

Download
memory/2820-180-0x0000000000000000-mapping.dmp

Download
memory/4076-179-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads