3a8d3c58902597ef07df41c9ff771848f1cc7a49c51ca6f2228d940f0b9ff14d

General

Target

catalog-1984022420.xls
Size

367KB
MD5

06850414efb83142e35b86c940dae78b
SHA1

6a9ab6fe061cb0e355aba24221bd8c9ac2653130
SHA256

5be9e33e7fe2676079254458bfcf2f29c3f386417730bda392ce69d808b29eb2
SHA512

24a04b375fb17b008867863cf15dc3d88e7d1b435251e3273a944b18eb93e8424439e8ad59b4722021ed8d18229115d942477ace11f610c85b0345157a09fd9a

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	3660	4024	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1716	4024	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\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4024 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4024	EXCEL.EXE
4024	EXCEL.EXE
4024	EXCEL.EXE
4024	EXCEL.EXE
4024	EXCEL.EXE
4024	EXCEL.EXE
4024	EXCEL.EXE
4024	EXCEL.EXE
4024	EXCEL.EXE
4024	EXCEL.EXE
4024	EXCEL.EXE
4024	EXCEL.EXE
4024	EXCEL.EXE
4024	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4024 wrote to memory of 3660	4024	EXCEL.EXE	rundll32.exe
PID 4024 wrote to memory of 3660	4024	EXCEL.EXE	rundll32.exe
PID 4024 wrote to memory of 1716	4024	EXCEL.EXE	rundll32.exe
PID 4024 wrote to memory of 1716	4024	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-1984022420.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4024

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3660

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1716

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/1716-180-0x0000000000000000-mapping.dmp

Download
memory/3660-179-0x0000000000000000-mapping.dmp

Download
memory/4024-114-0x00007FF71D310000-0x00007FF7208C6000-memory.dmp

Filesize
53.7MB

Download
memory/4024-115-0x00007FF92CFA0000-0x00007FF92CFB0000-memory.dmp

Filesize
64KB

Download
memory/4024-116-0x00007FF92CFA0000-0x00007FF92CFB0000-memory.dmp

Filesize
64KB

Download
memory/4024-117-0x00007FF92CFA0000-0x00007FF92CFB0000-memory.dmp

Filesize
64KB

Download
memory/4024-118-0x00007FF92CFA0000-0x00007FF92CFB0000-memory.dmp

Filesize
64KB

Download
memory/4024-121-0x00007FF92CFA0000-0x00007FF92CFB0000-memory.dmp

Filesize
64KB

Download
memory/4024-122-0x00007FF94CFE0000-0x00007FF94E0CE000-memory.dmp

Filesize
16.9MB

Download
memory/4024-123-0x00007FF94B0E0000-0x00007FF94CFD5000-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