f7fa58c11784ab508a84397aeafc7f21b98a9b4f1db8afcca66ec8ad8811e889

General

Target

catalog-2055527889.xls
Size

367KB
MD5

2595ea4efc2c89f98d2a4d6c7a904a99
SHA1

36605f79c7e4b2428b877aad7a3395b7f72d95ff
SHA256

b8af0b781b0df7b72615a92a0d3c58a0ce76608cabb6b6e511bbe40f7e018ad7
SHA512

8405a5abb63714e8a3812cb65efabd6fc819626e84969857627fca508ffc8247e6018ef464f827be16482728c8885c42d36f234d227501608af36c5f4ec1c57b

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	2472	4656	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2604	4656	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

4656 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE
4656	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4656 wrote to memory of 2472	4656	EXCEL.EXE	rundll32.exe
PID 4656 wrote to memory of 2472	4656	EXCEL.EXE	rundll32.exe
PID 4656 wrote to memory of 2604	4656	EXCEL.EXE	rundll32.exe
PID 4656 wrote to memory of 2604	4656	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-2055527889.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4656

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2472

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2604

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/2472-179-0x0000000000000000-mapping.dmp

Download
memory/2604-180-0x0000000000000000-mapping.dmp

Download
memory/4656-114-0x00007FF79B800000-0x00007FF79EDB6000-memory.dmp

Filesize
53.7MB

Download
memory/4656-115-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4656-116-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4656-117-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4656-118-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4656-119-0x00007FFA38500000-0x00007FFA38510000-memory.dmp

Filesize
64KB

Download
memory/4656-122-0x00007FFA59470000-0x00007FFA5A55E000-memory.dmp

Filesize
16.9MB

Download
memory/4656-123-0x000001CDAEF90000-0x000001CDB0E85000-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