Malware Analysis Report

2024-12-07 22:45

Sample ID 240719-rjx65sydpa
Target 18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe
SHA256 18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84
Tags
remcos evansnewfile 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

18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84

Threat Level: Known bad

The file 18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe was found to be: Known bad.

Malicious Activity Summary

remcos evansnewfile rat

Remcos

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-07-19 14:13

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-19 14:13

Reported

2024-07-19 14:16

Platform

win7-20240704-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe

"C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2392 -s 844

Network

N/A

Files

memory/2392-0-0x00000000745EE000-0x00000000745EF000-memory.dmp

memory/2392-1-0x0000000001240000-0x000000000134A000-memory.dmp

memory/2392-2-0x00000000745E0000-0x0000000074CCE000-memory.dmp

memory/2392-3-0x0000000000D00000-0x0000000000D1A000-memory.dmp

memory/2392-4-0x0000000000D30000-0x0000000000D3E000-memory.dmp

memory/2392-5-0x00000000745EE000-0x00000000745EF000-memory.dmp

memory/2392-6-0x00000000745E0000-0x0000000074CCE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-19 14:13

Reported

2024-07-19 14:16

Platform

win10v2004-20240709-en

Max time kernel

147s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe"

Signatures

Remcos

rat remcos

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1040 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe
PID 1040 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe
PID 1040 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe
PID 1040 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe
PID 1040 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe
PID 1040 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe
PID 1040 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe
PID 1040 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe
PID 1040 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe
PID 1040 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe
PID 1040 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe
PID 1040 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe

Processes

C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe

"C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe"

C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe

"C:\Users\Admin\AppData\Local\Temp\18f679a41695816dc45091ee43ebb682ffc901a09211548cada55ea87f79bc84.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
PL 91.223.3.151:4508 tcp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
PL 91.223.3.151:4508 tcp
PL 91.223.3.151:4508 tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
PL 91.223.3.151:4508 tcp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
PL 91.223.3.151:4508 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
PL 91.223.3.151:4508 tcp
PL 91.223.3.151:4508 tcp

Files

memory/1040-0-0x00000000751DE000-0x00000000751DF000-memory.dmp

memory/1040-1-0x0000000000970000-0x0000000000A7A000-memory.dmp

memory/1040-2-0x0000000005A20000-0x0000000005FC4000-memory.dmp

memory/1040-3-0x0000000005470000-0x0000000005502000-memory.dmp

memory/1040-4-0x00000000055B0000-0x0000000005904000-memory.dmp

memory/1040-5-0x00000000751D0000-0x0000000075980000-memory.dmp

memory/1040-6-0x0000000006030000-0x000000000603A000-memory.dmp

memory/1040-7-0x00000000086D0000-0x00000000086EA000-memory.dmp

memory/1040-8-0x0000000006A10000-0x0000000006A1E000-memory.dmp

memory/1040-9-0x0000000006BC0000-0x0000000006C80000-memory.dmp

memory/1040-10-0x0000000006B00000-0x0000000006B9C000-memory.dmp

memory/1740-12-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-14-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-11-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-15-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-17-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1040-18-0x00000000751D0000-0x0000000075980000-memory.dmp

memory/1740-19-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-20-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-21-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-22-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-23-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-24-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-25-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-26-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-27-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-28-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-29-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1740-30-0x0000000000400000-0x0000000000482000-memory.dmp