55ec5f94b7ac8f0564f13a52ec53b4008d3a3fd9cea3b603bcf96bd285ced46b

General

Target

catalog-1981251487.xls
Size

367KB
MD5

1ce3ff8075bd41a50d249a074aa25e89
SHA1

23c40978c1c63824aeefeeb3f420e9f073272675
SHA256

fbec2cfe17c29a256bdda91314514e306d4e7d863733ef90b507e543c0df7214
SHA512

ee890b932405a93a5bbe970ec7cffff1d23e2275c8c21cf95f134cd1017d9f9bf32d6ddeccc84527e9b06a75360b2b3171afb52e12c134f8e6d23698ed9d4959

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	3996	4068	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3648	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 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

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 3996	4068	EXCEL.EXE	rundll32.exe
PID 4068 wrote to memory of 3996	4068	EXCEL.EXE	rundll32.exe
PID 4068 wrote to memory of 3648	4068	EXCEL.EXE	rundll32.exe
PID 4068 wrote to memory of 3648	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-1981251487.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:3996

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3648

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/3648-180-0x0000000000000000-mapping.dmp

Download
memory/3996-179-0x0000000000000000-mapping.dmp

Download
memory/4068-114-0x00007FF725F90000-0x00007FF729546000-memory.dmp

Filesize
53.7MB

Download
memory/4068-115-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/4068-116-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/4068-117-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/4068-118-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/4068-122-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/4068-121-0x00007FFAE3C50000-0x00007FFAE4D3E000-memory.dmp

Filesize
16.9MB

Download
memory/4068-123-0x00007FFAE1D50000-0x00007FFAE3C45000-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