Malware Analysis Report

2024-10-23 21:07

Sample ID 201109-5bejbj3myx
Target new purchase order.rar.exe
SHA256 a4d3085a47bf0da4fa557e18de19bada74667d0eaa3dca959990b96215bb25cc
Tags
snakebot snakebot agenttesla coreentity evasion keylogger rezer0 spyware stealer trojan nanocore
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

a4d3085a47bf0da4fa557e18de19bada74667d0eaa3dca959990b96215bb25cc

Threat Level: Known bad

The file new purchase order.rar.exe was found to be: Known bad.

Malicious Activity Summary

snakebot snakebot agenttesla coreentity evasion keylogger rezer0 spyware stealer trojan nanocore

CoreEntity .NET Packer

AgentTesla

NanoCore

Snakebot family

Contains SnakeBOT related strings

rezer0

AgentTesla Payload

Drops file in Drivers directory

Disables Task Manager via registry modification

Suspicious use of SetThreadContext

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Modifies registry key

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2020-11-09 19:37

Signatures

Snakebot family

snakebot

Contains SnakeBOT related strings

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

Analysis: behavioral1

Detonation Overview

Submitted

2020-11-09 19:37

Reported

2020-11-09 22:05

Platform

win7v20201028

Max time kernel

97s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

CoreEntity .NET Packer

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

AgentTesla Payload

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

rezer0

rezer0
Description Indicator Process Target
N/A N/A N/A N/A

Disables Task Manager via registry modification

evasion

Drops file in Drivers directory

Description Indicator Process Target
File opened for modification C:\Windows\system32\drivers\etc\hosts C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 536 set thread context of 1740 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

Modifies registry key

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

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 536 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 536 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 536 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 536 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 536 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 536 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 536 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 536 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 536 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 536 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 536 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 536 wrote to memory of 1740 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1740 wrote to memory of 1432 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\REG.exe
PID 1740 wrote to memory of 1432 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\REG.exe
PID 1740 wrote to memory of 1432 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\REG.exe
PID 1740 wrote to memory of 1432 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\REG.exe
PID 1740 wrote to memory of 744 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\netsh.exe
PID 1740 wrote to memory of 744 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\netsh.exe
PID 1740 wrote to memory of 744 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\netsh.exe
PID 1740 wrote to memory of 744 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\netsh.exe

Processes

C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe

"C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

"{path}"

C:\Windows\SysWOW64\REG.exe

REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f

C:\Windows\SysWOW64\netsh.exe

"netsh" wlan show profile

Network

N/A

Files

memory/536-0-0x0000000074360000-0x0000000074A4E000-memory.dmp

memory/536-1-0x0000000000380000-0x0000000000381000-memory.dmp

memory/1988-3-0x000007FEF6010000-0x000007FEF628A000-memory.dmp

memory/536-4-0x0000000000310000-0x0000000000313000-memory.dmp

memory/536-5-0x00000000044D0000-0x0000000004523000-memory.dmp

memory/1740-6-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1740-7-0x000000000044C6EE-mapping.dmp

memory/1740-8-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1740-9-0x0000000000400000-0x0000000000452000-memory.dmp

memory/1740-10-0x00000000742E0000-0x00000000749CE000-memory.dmp

memory/1432-13-0x0000000000000000-mapping.dmp

memory/744-14-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-11-09 19:37

Reported

2020-11-09 22:05

Platform

win10v20201028

Max time kernel

67s

Max time network

132s

Command Line

"C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe"

Signatures

AgentTesla

keylogger trojan stealer spyware agenttesla

CoreEntity .NET Packer

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

NanoCore

keylogger trojan stealer spyware nanocore

AgentTesla Payload

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
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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

rezer0

rezer0
Description Indicator Process Target
N/A N/A N/A N/A

Disables Task Manager via registry modification

evasion

Drops file in Drivers directory

Description Indicator Process Target
File opened for modification C:\Windows\system32\drivers\etc\hosts C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 3932 set thread context of 3976 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

Modifies registry key

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3932 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 3932 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 3932 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 3932 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 3932 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 3932 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 3932 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 3932 wrote to memory of 3976 N/A C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 3976 wrote to memory of 3128 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\REG.exe
PID 3976 wrote to memory of 3128 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\REG.exe
PID 3976 wrote to memory of 3128 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\REG.exe

Processes

C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe

"C:\Users\Admin\AppData\Local\Temp\new purchase order.rar.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe

"{path}"

C:\Windows\SysWOW64\REG.exe

REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3976 -s 1432

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 www.google.com.br udp
N/A 172.217.19.195:443 www.google.com.br tcp
N/A 13.107.4.52:80 www.msftconnecttest.com tcp

Files

memory/3932-0-0x0000000073300000-0x00000000739EE000-memory.dmp

memory/3932-1-0x0000000000C00000-0x0000000000C01000-memory.dmp

memory/3932-3-0x0000000007E40000-0x0000000007E41000-memory.dmp

memory/3932-4-0x00000000079E0000-0x00000000079E1000-memory.dmp

memory/3932-5-0x00000000079A0000-0x00000000079A1000-memory.dmp

memory/3932-6-0x0000000002E20000-0x0000000002E23000-memory.dmp

memory/3932-7-0x000000000B470000-0x000000000B4C3000-memory.dmp

memory/3932-8-0x000000000B570000-0x000000000B571000-memory.dmp

memory/3976-9-0x0000000000400000-0x0000000000452000-memory.dmp

memory/3976-10-0x000000000044C6EE-mapping.dmp

memory/3976-11-0x0000000073300000-0x00000000739EE000-memory.dmp

memory/3976-16-0x00000000053E0000-0x00000000053E1000-memory.dmp

memory/3976-17-0x0000000005EB0000-0x0000000005EB1000-memory.dmp

memory/3128-18-0x0000000000000000-mapping.dmp

memory/2064-19-0x00000000044A0000-0x00000000044A1000-memory.dmp

memory/3976-20-0x000000000044C6EE-mapping.dmp

memory/3976-22-0x000000000044C6EE-mapping.dmp

memory/3976-21-0x000000000044C6EE-mapping.dmp

memory/3976-23-0x000000000044C6EE-mapping.dmp

memory/3976-25-0x000000000044C6EE-mapping.dmp

memory/3976-24-0x000000000044C6EE-mapping.dmp

memory/3976-26-0x000000000044C6EE-mapping.dmp

memory/3976-27-0x000000000044C6EE-mapping.dmp

memory/3976-28-0x000000000044C6EE-mapping.dmp

memory/3976-30-0x000000000044C6EE-mapping.dmp

memory/3976-29-0x000000000044C6EE-mapping.dmp

memory/2064-31-0x0000000004AD0000-0x0000000004AD1000-memory.dmp