Malware Analysis Report

2025-03-14 22:31

Sample ID 240304-rgmydsca6w
Target b2537bd00585ae2d60c717c6712be8eb
SHA256 b5efa74506a9cc9aa6f2f7234989edac808ffbcb35eb196815bc88bb1e8c7716
Tags
persistence evasion
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

b5efa74506a9cc9aa6f2f7234989edac808ffbcb35eb196815bc88bb1e8c7716

Threat Level: Known bad

The file b2537bd00585ae2d60c717c6712be8eb was found to be: Known bad.

Malicious Activity Summary

persistence evasion

Modifies WinLogon for persistence

Modifies Windows Firewall

Checks computer location settings

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Runs ping.exe

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-04 14:09

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-04 14:09

Reported

2024-03-04 14:12

Platform

win7-20240215-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\init.exe" C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe

"C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe"

Network

N/A

Files

memory/1888-0-0x00000000003E0000-0x0000000000418000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-04 14:09

Reported

2024-03-04 14:12

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe"

Signatures

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = ",C:\\Users\\Admin\\AppData\\Local\\Temp\\init.exe" C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe N/A

Modifies Windows Firewall

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe N/A

Executes dropped EXE

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

Enumerates physical storage devices

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1880 wrote to memory of 1280 N/A C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe C:\Users\Admin\AppData\Local\Temp\init.exe
PID 1880 wrote to memory of 1280 N/A C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe C:\Users\Admin\AppData\Local\Temp\init.exe
PID 1880 wrote to memory of 1280 N/A C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe C:\Users\Admin\AppData\Local\Temp\init.exe
PID 1880 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe C:\Windows\SysWOW64\cmd.exe
PID 1880 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe C:\Windows\SysWOW64\cmd.exe
PID 1880 wrote to memory of 4660 N/A C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe C:\Windows\SysWOW64\cmd.exe
PID 4660 wrote to memory of 3024 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 4660 wrote to memory of 3024 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 4660 wrote to memory of 3024 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1280 wrote to memory of 1968 N/A C:\Users\Admin\AppData\Local\Temp\init.exe C:\Windows\SysWOW64\netsh.exe
PID 1280 wrote to memory of 1968 N/A C:\Users\Admin\AppData\Local\Temp\init.exe C:\Windows\SysWOW64\netsh.exe
PID 1280 wrote to memory of 1968 N/A C:\Users\Admin\AppData\Local\Temp\init.exe C:\Windows\SysWOW64\netsh.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe

"C:\Users\Admin\AppData\Local\Temp\b2537bd00585ae2d60c717c6712be8eb.exe"

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

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

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\99.bat" "

C:\Windows\SysWOW64\PING.EXE

ping -n 1 0.0.0.0

C:\Windows\SysWOW64\netsh.exe

netsh firewall set allowedprogram "C:\Users\Admin\AppData\Local\Temp\init.exe" ENABLE

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 185.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 yahoo.com udp
US 8.8.8.8:53 mta5.am0.yahoodns.net udp
US 98.136.96.74:25 mta5.am0.yahoodns.net tcp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 google.com udp
US 8.8.8.8:53 smtp.google.com udp
IE 74.125.193.26:25 smtp.google.com tcp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 microsoft.com udp
US 8.8.8.8:53 microsoft-com.mail.protection.outlook.com udp
US 52.101.8.49:25 microsoft-com.mail.protection.outlook.com tcp
US 8.8.8.8:53 175.178.17.96.in-addr.arpa udp
US 72.233.33.194:5190 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 188.178.17.96.in-addr.arpa udp

Files

memory/1880-0-0x00000000003E0000-0x0000000000418000-memory.dmp

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

MD5 b2537bd00585ae2d60c717c6712be8eb
SHA1 f5e499f7559e59c76e6a83a691b1e65965fb1aa4
SHA256 b5efa74506a9cc9aa6f2f7234989edac808ffbcb35eb196815bc88bb1e8c7716
SHA512 36d346de5aab25c3c3399dd647527991e01e6bceeb255c4b1f1b38045daa9039033d4e5e034d9d9b33bc70766279bab8f5e5d2b3bc4a1cea78d4b2d2430b09c5

C:\Users\Admin\AppData\Local\Temp\99.bat

MD5 c605c627b6ffc15f055661b815307035
SHA1 e6c42264df0fcc11a4e6d843e86fc8f5f8181356
SHA256 8e1218e686e2a5b486a20f0ac6e0f095ff3f0f0c84fc53a90313dc4861e0f944
SHA512 81367079398ccd88bb84e30b1bba064e67859f271ae0237a649a0cfed4923d81dec039d2e6699182bddd2bd82afc7ccb643c7cadac8ebd3cbb55fd0cbb45a95f

memory/1280-15-0x0000000000290000-0x0000000000291000-memory.dmp