c90860cbcc78e518dfc11584eb096b7d31eb488f43d5c082b816da54cddfae0f

Analysis

max time kernel
149s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20230621-en
resource tags

arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
submitted
26-06-2023 03:18

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

c90860cbcc78e518dfc11584eb096b7d31eb488f43d5c082b816da54cddfae0f.xls
Size

124KB
MD5

a5dd8d199b2fab12f9a8b5dc01bc960a
SHA1

e033a2462b83278d17cfe23e9dc3a9c90e7b9f8e
SHA256

c90860cbcc78e518dfc11584eb096b7d31eb488f43d5c082b816da54cddfae0f
SHA512

93a3e25a9209ff5a3e23b9d3ee36d987482c17093b8e1971d48305820df503b34d502fd6a958a8603a67082112a7d6a4698f397b70931bd54fe6c439e602a588
SSDEEP

3072:8Kpb8rGYrMPe3q7Q0XV5xtezEsi8ZM+3UBjyqgF2ikieW2DXewVZawQ:8Kpb8rGYrMPe3q7Q0XV5xtuEsi8ZM++U

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://digitaldays.ro/site/brandupi.php

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.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	1960	2264	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

2264 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

2264 EXCEL.EXE
2264 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
2264	EXCEL.EXE
2264	EXCEL.EXE
2264	EXCEL.EXE
2264	EXCEL.EXE
2264	EXCEL.EXE
2264	EXCEL.EXE
2264	EXCEL.EXE
2264	EXCEL.EXE
2264	EXCEL.EXE
2264	EXCEL.EXE
2264	EXCEL.EXE
2264	EXCEL.EXE
2264	EXCEL.EXE
2264	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2264 wrote to memory of 1960	2264	EXCEL.EXE	rundll32.exe
PID 2264 wrote to memory of 1960	2264	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\c90860cbcc78e518dfc11584eb096b7d31eb488f43d5c082b816da54cddfae0f.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2264

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\svh.osts,DllRegisterServer1
2⤵
- Process spawned unexpected child process
PID:1960

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2264-133-0x00007FFFA6EF0000-0x00007FFFA6F00000-memory.dmp

Filesize
64KB

Download
memory/2264-135-0x00007FFFA6EF0000-0x00007FFFA6F00000-memory.dmp

Filesize
64KB

Download
memory/2264-134-0x00007FFFA6EF0000-0x00007FFFA6F00000-memory.dmp

Filesize
64KB

Download
memory/2264-136-0x00007FFFA6EF0000-0x00007FFFA6F00000-memory.dmp

Filesize
64KB

Download
memory/2264-137-0x00007FFFA6EF0000-0x00007FFFA6F00000-memory.dmp

Filesize
64KB

Download
memory/2264-138-0x00007FFFA45C0000-0x00007FFFA45D0000-memory.dmp

Filesize
64KB

Download
memory/2264-139-0x00007FFFA45C0000-0x00007FFFA45D0000-memory.dmp

Filesize
64KB

Download