65729efe38fc2e9d5a8cecd683354dc7beedc24ffbda970f0a179949c4d0ff71

General

Target

catalog-2142417111.xls
Size

367KB
MD5

2f69b6df92e4ab2b7ae631fe788bebd3
SHA1

f730090181af24ffd298abfbdf5f8c462daa6c28
SHA256

ce6bec2a8ad06b5152f727111993341f7b408747013d9050e1352c8e3ec68119
SHA512

74124fd2c29799bacbe9bdde78f7fcdd412a7807a6ea6964b539778d8d135e9143598950338f5a9007d4eb98e5e5f4e9edd99e9ef2a3315a62a5d6929126ee80

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	3880	4804	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3092	4804	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

4804 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4804	EXCEL.EXE
4804	EXCEL.EXE
4804	EXCEL.EXE
4804	EXCEL.EXE
4804	EXCEL.EXE
4804	EXCEL.EXE
4804	EXCEL.EXE
4804	EXCEL.EXE
4804	EXCEL.EXE
4804	EXCEL.EXE
4804	EXCEL.EXE
4804	EXCEL.EXE
4804	EXCEL.EXE
4804	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4804 wrote to memory of 3880	4804	EXCEL.EXE	rundll32.exe
PID 4804 wrote to memory of 3880	4804	EXCEL.EXE	rundll32.exe
PID 4804 wrote to memory of 3092	4804	EXCEL.EXE	rundll32.exe
PID 4804 wrote to memory of 3092	4804	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-2142417111.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4804

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3880

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3092

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/3092-180-0x0000000000000000-mapping.dmp

Download
memory/3880-179-0x0000000000000000-mapping.dmp

Download
memory/4804-114-0x00007FF6E5330000-0x00007FF6E88E6000-memory.dmp

Filesize
53.7MB

Download
memory/4804-115-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4804-116-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4804-117-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4804-118-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4804-122-0x00007FFD6E7C0000-0x00007FFD6E7D0000-memory.dmp

Filesize
64KB

Download
memory/4804-121-0x00007FFD8F160000-0x00007FFD9024E000-memory.dmp

Filesize
16.9MB

Download
memory/4804-123-0x000002BF73730000-0x000002BF75625000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads