11a82d99ae5fdb5cc4438188e30ebe799356cbf1671c1c893f1e797ea1b516ec

General

Target

catalog-2077572488.xls
Size

367KB
MD5

e2a2ab5fed81c1abb6ec1f2326e65cbb
SHA1

8268b9deff37f48e97c27daac52022f92a2988d7
SHA256

b12eba05ad4543196d272b3593e19cab66a4e0486c79b0344c0f9ec98e98ae02
SHA512

258090cebb97aaa9a3edead37de2fdaa2eb38e3e5de2d86183503f7acac7c25504f8f8c5b13b708612bc0a72b65fb1dc64ed82e2ddfbce0bb6bc94d8a829c75f

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	2268	4068	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1628	4068	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

4068 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4068	EXCEL.EXE
4068	EXCEL.EXE
4068	EXCEL.EXE
4068	EXCEL.EXE
4068	EXCEL.EXE
4068	EXCEL.EXE
4068	EXCEL.EXE
4068	EXCEL.EXE
4068	EXCEL.EXE
4068	EXCEL.EXE
4068	EXCEL.EXE
4068	EXCEL.EXE
4068	EXCEL.EXE
4068	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4068 wrote to memory of 2268	4068	EXCEL.EXE	rundll32.exe
PID 4068 wrote to memory of 2268	4068	EXCEL.EXE	rundll32.exe
PID 4068 wrote to memory of 1628	4068	EXCEL.EXE	rundll32.exe
PID 4068 wrote to memory of 1628	4068	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-2077572488.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4068

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2268

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1628

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/1628-180-0x0000000000000000-mapping.dmp

Download
memory/2268-179-0x0000000000000000-mapping.dmp

Download
memory/4068-114-0x00007FF677F70000-0x00007FF67B526000-memory.dmp

Filesize
53.7MB

Download
memory/4068-115-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

Filesize
64KB

Download
memory/4068-116-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

Filesize
64KB

Download
memory/4068-117-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

Filesize
64KB

Download
memory/4068-118-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

Filesize
64KB

Download
memory/4068-121-0x00007FFB7CFD0000-0x00007FFB7E0BE000-memory.dmp

Filesize
16.9MB

Download
memory/4068-122-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

Filesize
64KB

Download
memory/4068-123-0x00007FFB7AC50000-0x00007FFB7CB45000-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