Malware Analysis Report

2025-01-02 03:21

Sample ID 240402-txb7yafd52
Target Quotation.zip
SHA256 5f41a3813e433c05444cc3f8b3f41e4284b3b27af7c476704bcebe170098780f
Tags
remcos remotehost rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

5f41a3813e433c05444cc3f8b3f41e4284b3b27af7c476704bcebe170098780f

Threat Level: Known bad

The file Quotation.zip was found to be: Known bad.

Malicious Activity Summary

remcos remotehost rat

Remcos

Loads dropped DLL

Drops startup file

Executes dropped EXE

Suspicious use of SetThreadContext

AutoIT Executable

Unsigned PE

Suspicious behavior: MapViewOfSection

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-02 16:25

Signatures

AutoIT Executable

Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-02 16:25

Reported

2024-04-02 16:30

Platform

win7-20240319-en

Max time kernel

270s

Max time network

273s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"

Signatures

Remcos

rat remcos

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\excel.vbs C:\Users\Admin\AppData\Local\directory\excel.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\directory\excel.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe N/A

AutoIT Executable

Description Indicator Process Target
N/A N/A N/A N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1728 set thread context of 2080 N/A C:\Users\Admin\AppData\Local\directory\excel.exe C:\Windows\SysWOW64\svchost.exe

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\svchost.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\directory\excel.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2884 wrote to memory of 1728 N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe C:\Users\Admin\AppData\Local\directory\excel.exe
PID 2884 wrote to memory of 1728 N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe C:\Users\Admin\AppData\Local\directory\excel.exe
PID 2884 wrote to memory of 1728 N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe C:\Users\Admin\AppData\Local\directory\excel.exe
PID 2884 wrote to memory of 1728 N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe C:\Users\Admin\AppData\Local\directory\excel.exe
PID 2884 wrote to memory of 1728 N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe C:\Users\Admin\AppData\Local\directory\excel.exe
PID 2884 wrote to memory of 1728 N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe C:\Users\Admin\AppData\Local\directory\excel.exe
PID 2884 wrote to memory of 1728 N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe C:\Users\Admin\AppData\Local\directory\excel.exe
PID 1728 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\directory\excel.exe C:\Windows\SysWOW64\svchost.exe
PID 1728 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\directory\excel.exe C:\Windows\SysWOW64\svchost.exe
PID 1728 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\directory\excel.exe C:\Windows\SysWOW64\svchost.exe
PID 1728 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\directory\excel.exe C:\Windows\SysWOW64\svchost.exe
PID 1728 wrote to memory of 2080 N/A C:\Users\Admin\AppData\Local\directory\excel.exe C:\Windows\SysWOW64\svchost.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Quotation.exe

"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"

C:\Users\Admin\AppData\Local\directory\excel.exe

"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"

C:\Windows\SysWOW64\svchost.exe

"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 shgoini.com udp
US 107.175.229.143:30902 shgoini.com tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
US 107.175.229.143:30902 shgoini.com tcp
US 107.175.229.143:30902 shgoini.com tcp

Files

memory/2884-10-0x0000000000120000-0x0000000000124000-memory.dmp

\Users\Admin\AppData\Local\directory\excel.exe

MD5 517478c26983b30fa50e01cb95affeb7
SHA1 a864ef23f3d05aef07a46e3fe9a284535fbe3b73
SHA256 cf288b019d7b5fd36bb27867f6cb5f897eb1929f4b75b24079c9fc16a4ac3007
SHA512 d5cc9c313c5af2dced3f5c0c2b571fb1530f18246f8f15bf7d62ec440b2d2115a56784c1a98ae080e9cb00c136410e78baa2c59f7b5eb01a965b6df4758fcdc5

C:\Users\Admin\AppData\Local\Temp\ambiparous

MD5 5836e6fb1198f5826ca8facdba529e79
SHA1 cc17afcef2c435265036b8520728963b91ae652c
SHA256 f59b9e90acdbe2a0cc3e5e66bb3214adb7506fc775b8264e36e408a21decfba0
SHA512 f66d5d9e96911ffe7228d2db7b305ee404ba59d25fcde778d00a590417e3606b72dac0a91b7edb4e5d42f7a5a14990eaf4b5058e16ca5e12b49701c6168e3045

C:\Users\Admin\AppData\Local\Temp\intersentimental

MD5 33b3a37e1729538227a84e8aec307e27
SHA1 d888cf3906a4bc58ccc74cba9fe6f314d3be29dd
SHA256 61616629bc83442de66185fb8a8b3ed37d4fc690d473e28cf570527a5db7d456
SHA512 7d1f025b2c18f6b1e7d1793897a17bc36f95a417d1764efc109144b0ffbb8c0a43ea216cab1e3d16935565bcd309ac8845e9df1805f99a1ac8d1f687ad52ef80

memory/2080-30-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-32-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-33-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-34-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-35-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-36-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-37-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-38-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-40-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-41-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-42-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-43-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-44-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-45-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-46-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-47-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-48-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-50-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-51-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-54-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-55-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-56-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-58-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-59-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-60-0x0000000000400000-0x0000000000482000-memory.dmp

memory/2080-61-0x0000000000400000-0x0000000000482000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-02 16:25

Reported

2024-04-02 16:28

Platform

win10v2004-20240226-en

Max time kernel

93s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"

Signatures

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Quotation.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Quotation.exe

"C:\Users\Admin\AppData\Local\Temp\Quotation.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 57.162.23.2.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 35.34.16.2.in-addr.arpa udp
US 8.8.8.8:53 19.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 98.58.20.217.in-addr.arpa udp

Files

memory/3972-10-0x0000000003D20000-0x0000000003D24000-memory.dmp