Malware Analysis Report

2024-11-13 16:14

Sample ID 240414-m6eabsba6v
Target MrsMajor3.0.exe
SHA256 4a75f2db1dbd3c1218bb9994b7e1c690c4edd4e0c1a675de8d2a127611173e69
Tags
agilenet evasion trojan
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 Overview

score
10/10

SHA256

4a75f2db1dbd3c1218bb9994b7e1c690c4edd4e0c1a675de8d2a127611173e69

Threat Level: Known bad

The file MrsMajor3.0.exe was found to be: Known bad.

Malicious Activity Summary

agilenet evasion trojan

UAC bypass

Obfuscated with Agile.Net obfuscator

Executes dropped EXE

Loads dropped DLL

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

System policy modification

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-14 11:04

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-14 11:04

Reported

2024-04-14 11:11

Platform

win7-20240221-en

Max time kernel

359s

Max time network

360s

Command Line

"C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe"

Signatures

UAC bypass

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Windows\system32\wscript.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe N/A

Obfuscated with Agile.Net obfuscator

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

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\system32\msinfo32.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe N/A
Token: 33 N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: 33 N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\system32\AUDIODG.EXE N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe N/A

System policy modification

evasion
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System C:\Windows\system32\wscript.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" C:\Windows\system32\wscript.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe

"C:\Users\Admin\AppData\Local\Temp\MrsMajor3.0.exe"

C:\Windows\system32\wscript.exe

"C:\Windows\system32\wscript.exe" C:\Users\Admin\AppData\Local\Temp\231A.tmp\231B.tmp\231C.vbs //Nologo

C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe

"C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe"

C:\Windows\system32\msinfo32.exe

"C:\Windows\system32\msinfo32.exe"

C:\Windows\system32\AUDIODG.EXE

C:\Windows\system32\AUDIODG.EXE 0x540

C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe

"C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe"

Network

N/A

Files

C:\Users\Admin\AppData\Local\Temp\231A.tmp\231B.tmp\231C.vbs

MD5 3b8696ecbb737aad2a763c4eaf62c247
SHA1 4a2d7a2d61d3f4c414b4e5d2933cd404b8f126e5
SHA256 ce95f7eea8b303bc23cfd6e41748ad4e7b5e0f0f1d3bdf390eadb1e354915569
SHA512 713d9697b892b9dd892537e8a01eab8d0265ebf64867c8beecf7a744321257c2a5c11d4de18fcb486bb69f199422ce3cab8b6afdbe880481c47b06ba8f335beb

C:\Users\Admin\AppData\Local\Temp\231A.tmp\eulascr.exe

MD5 8b1c352450e480d9320fce5e6f2c8713
SHA1 d6bd88bf33de7c5d4e68b233c37cc1540c97bd3a
SHA256 2c343174231b55e463ca044d19d47bd5842793c15954583eb340bfd95628516e
SHA512 2d8e43b1021da08ed1bf5aff110159e6bc10478102c024371302ccfce595e77fd76794658617b5b52f9a50190db250c1ba486d247d9cd69e4732a768edbb4cbc

memory/2960-8-0x00000000011F0000-0x000000000121A000-memory.dmp

memory/2960-9-0x000007FEF5950000-0x000007FEF633C000-memory.dmp

memory/2960-10-0x000000001AF20000-0x000000001AFA0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\5a530dfd-bc51-4992-a05d-f09d41a331d4\AgileDotNetRT64.dll

MD5 42b2c266e49a3acd346b91e3b0e638c0
SHA1 2bc52134f03fcc51cb4e0f6c7cf70646b4df7dd1
SHA256 adeed015f06efa363d504a18acb671b1db4b20b23664a55c9bc28aef3283ca29
SHA512 770822fd681a1d98afe03f6fbe5f116321b54c8e2989fb07491811fd29fca5b666f1adf4c6900823af1271e342cacc9293e9db307c4eef852d1a253b00347a81

memory/2960-17-0x000007FEF6D90000-0x000007FEF6EBC000-memory.dmp

memory/2960-18-0x000000001AF20000-0x000000001AFA0000-memory.dmp

memory/2960-19-0x000007FEF5950000-0x000007FEF633C000-memory.dmp

memory/2272-22-0x000007FEF46F0000-0x000007FEF50DC000-memory.dmp

memory/2272-21-0x00000000009F0000-0x0000000000A1A000-memory.dmp

memory/2272-25-0x000007FEF2F30000-0x000007FEF305C000-memory.dmp

memory/2272-26-0x000000001ACB0000-0x000000001AD30000-memory.dmp

memory/2272-27-0x000000001ACB0000-0x000000001AD30000-memory.dmp

memory/2272-28-0x000007FEF46F0000-0x000007FEF50DC000-memory.dmp

memory/2272-29-0x000000001ACB0000-0x000000001AD30000-memory.dmp