Malware Analysis Report

2024-10-23 21:07

Sample ID 201109-bdp228aft2
Target duk (3).exe
SHA256 bbfd3959ef22e9fa18ed11cbc9b8f31ac36e86f0d055d2c57b81ee19f9c54175
Tags
agenttesla coreentity evasion keylogger rezer0 spyware stealer trojan nanocore snakebot snakebot
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

bbfd3959ef22e9fa18ed11cbc9b8f31ac36e86f0d055d2c57b81ee19f9c54175

Threat Level: Known bad

The file duk (3).exe was found to be: Known bad.

Malicious Activity Summary

agenttesla coreentity evasion keylogger rezer0 spyware stealer trojan nanocore snakebot snakebot

Snakebot family

CoreEntity .NET Packer

NanoCore

AgentTesla

rezer0

AgentTesla Payload

Contains SnakeBOT related strings

Drops file in Drivers directory

Disables Task Manager via registry modification

Suspicious use of SetThreadContext

Program crash

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Modifies registry key

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 22:06

Platform

win7v20201028

Max time kernel

55s

Max time network

24s

Command Line

"C:\Users\Admin\AppData\Local\Temp\duk (3).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 596 set thread context of 1708 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).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\duk (3).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\duk (3).exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 596 wrote to memory of 1708 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 596 wrote to memory of 1708 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 596 wrote to memory of 1708 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 596 wrote to memory of 1708 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 596 wrote to memory of 1708 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 596 wrote to memory of 1708 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 596 wrote to memory of 1708 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 596 wrote to memory of 1708 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 596 wrote to memory of 1708 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 596 wrote to memory of 1708 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 596 wrote to memory of 1708 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 596 wrote to memory of 1708 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1708 wrote to memory of 616 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\REG.exe
PID 1708 wrote to memory of 616 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\REG.exe
PID 1708 wrote to memory of 616 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\REG.exe
PID 1708 wrote to memory of 616 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\REG.exe
PID 1708 wrote to memory of 1624 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\netsh.exe
PID 1708 wrote to memory of 1624 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\netsh.exe
PID 1708 wrote to memory of 1624 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\netsh.exe
PID 1708 wrote to memory of 1624 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\netsh.exe

Processes

C:\Users\Admin\AppData\Local\Temp\duk (3).exe

"C:\Users\Admin\AppData\Local\Temp\duk (3).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/596-0-0x0000000074CC0000-0x00000000753AE000-memory.dmp

memory/596-1-0x0000000000B80000-0x0000000000B81000-memory.dmp

memory/1960-3-0x000007FEF7E50000-0x000007FEF80CA000-memory.dmp

memory/596-4-0x0000000000890000-0x0000000000893000-memory.dmp

memory/596-5-0x0000000008080000-0x00000000080D1000-memory.dmp

memory/1708-6-0x0000000000400000-0x0000000000450000-memory.dmp

memory/1708-7-0x000000000044AC5E-mapping.dmp

memory/1708-8-0x0000000000400000-0x0000000000450000-memory.dmp

memory/1708-9-0x0000000000400000-0x0000000000450000-memory.dmp

memory/1708-10-0x0000000074CC0000-0x00000000753AE000-memory.dmp

memory/616-13-0x0000000000000000-mapping.dmp

memory/1624-14-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-11-09 19:37

Reported

2020-11-09 22:06

Platform

win10v20201028

Max time kernel

66s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\duk (3).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
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 1100 set thread context of 2448 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).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\duk (3).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\duk (3).exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1100 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1100 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1100 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1100 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1100 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1100 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1100 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 1100 wrote to memory of 2448 N/A C:\Users\Admin\AppData\Local\Temp\duk (3).exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
PID 2448 wrote to memory of 1124 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\REG.exe
PID 2448 wrote to memory of 1124 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\REG.exe
PID 2448 wrote to memory of 1124 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\REG.exe
PID 2448 wrote to memory of 3100 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\netsh.exe
PID 2448 wrote to memory of 3100 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\netsh.exe
PID 2448 wrote to memory of 3100 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe C:\Windows\SysWOW64\netsh.exe

Processes

C:\Users\Admin\AppData\Local\Temp\duk (3).exe

"C:\Users\Admin\AppData\Local\Temp\duk (3).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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2448 -s 1524

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/1100-0-0x0000000073CB0000-0x000000007439E000-memory.dmp

memory/1100-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/1100-3-0x0000000007260000-0x0000000007261000-memory.dmp

memory/1100-4-0x0000000006E00000-0x0000000006E01000-memory.dmp

memory/1100-5-0x0000000006DB0000-0x0000000006DB1000-memory.dmp

memory/1100-6-0x0000000002350000-0x0000000002353000-memory.dmp

memory/1100-7-0x000000000A5D0000-0x000000000A621000-memory.dmp

memory/1100-8-0x000000000A6E0000-0x000000000A6E1000-memory.dmp

memory/2448-9-0x0000000000400000-0x0000000000450000-memory.dmp

memory/2448-10-0x000000000044AC5E-mapping.dmp

memory/2448-11-0x0000000073CB0000-0x000000007439E000-memory.dmp

memory/2448-16-0x0000000004E00000-0x0000000004E01000-memory.dmp

memory/2448-17-0x00000000059D0000-0x00000000059D1000-memory.dmp

memory/1124-18-0x0000000000000000-mapping.dmp

memory/3100-19-0x0000000000000000-mapping.dmp

memory/3052-20-0x0000000004550000-0x0000000004551000-memory.dmp

memory/2448-22-0x000000000044AC5E-mapping.dmp

memory/2448-21-0x000000000044AC5E-mapping.dmp

memory/2448-23-0x000000000044AC5E-mapping.dmp

memory/2448-25-0x000000000044AC5E-mapping.dmp

memory/2448-24-0x000000000044AC5E-mapping.dmp

memory/2448-26-0x000000000044AC5E-mapping.dmp

memory/2448-33-0x000000000044AC5E-mapping.dmp

memory/2448-32-0x000000000044AC5E-mapping.dmp

memory/2448-31-0x000000000044AC5E-mapping.dmp

memory/2448-30-0x000000000044AC5E-mapping.dmp

memory/2448-34-0x000000000044AC5E-mapping.dmp

memory/2448-29-0x000000000044AC5E-mapping.dmp

memory/2448-28-0x000000000044AC5E-mapping.dmp

memory/2448-27-0x000000000044AC5E-mapping.dmp

memory/3052-35-0x0000000004D80000-0x0000000004D81000-memory.dmp