8ef58d81eb54cbbb4a79a4d85f74e462b975bcfd3bb80f7040a38f5899a3c5b8

General

Target

catalog-263199365.xls
Size

367KB
MD5

e4c3d22d87075c1935817d78ec583cd0
SHA1

23bc94177ffe205d6cee2b8efb88296485bb5919
SHA256

1d91a011f2596c3bdb018304f7a0a7c6106f4763a3a7d1f3848f379ff69b88f0
SHA512

229227a3032dd12945f38d7c3a0951b3cd0e0fe4178c33cbbcefa05b9c9c68dd80ee321d04fd67cc4e4e696df4e8041800feaf023a551801f2a5405d0d2a5018

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	3272	752	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3228	752	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\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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

752 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
752	EXCEL.EXE
752	EXCEL.EXE
752	EXCEL.EXE
752	EXCEL.EXE
752	EXCEL.EXE
752	EXCEL.EXE
752	EXCEL.EXE
752	EXCEL.EXE
752	EXCEL.EXE
752	EXCEL.EXE
752	EXCEL.EXE
752	EXCEL.EXE
752	EXCEL.EXE
752	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 752 wrote to memory of 3272	752	EXCEL.EXE	rundll32.exe
PID 752 wrote to memory of 3272	752	EXCEL.EXE	rundll32.exe
PID 752 wrote to memory of 3228	752	EXCEL.EXE	rundll32.exe
PID 752 wrote to memory of 3228	752	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-263199365.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:752

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3272

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3228

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

Loading Replay Monitor...

Downloads

memory/752-114-0x00007FF739EF0000-0x00007FF73D4A6000-memory.dmp

Filesize
53.7MB

Download
memory/752-115-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/752-116-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/752-117-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/752-118-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/752-121-0x00007FFA7A250000-0x00007FFA7B33E000-memory.dmp

Filesize
16.9MB

Download
memory/752-122-0x00007FFA59300000-0x00007FFA59310000-memory.dmp

Filesize
64KB

Download
memory/752-123-0x00000212D7C90000-0x00000212D9B85000-memory.dmp

Filesize
31.0MB

Download
memory/3228-180-0x0000000000000000-mapping.dmp

Download
memory/3272-179-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads