Malware Analysis Report

2025-08-10 19:48

Sample ID 250416-rrqf9swnv7
Target decodedfile.zip
SHA256 f6edcd66b7c14920bc0f820eaf537bf5ee101c91b618ea3fbbb1b8978a40a775
Tags
janelarat discovery rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V16

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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

f6edcd66b7c14920bc0f820eaf537bf5ee101c91b618ea3fbbb1b8978a40a775

Threat Level: Known bad

The file decodedfile.zip was found to be: Known bad.

Malicious Activity Summary

janelarat discovery rat

Janelarat family

JanelaRAT

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-04-16 14:25

Signatures

Janelarat family

janelarat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-04-16 14:25

Reported

2025-04-16 14:28

Platform

win10v2004-20250410-en

Max time kernel

140s

Max time network

112s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\VCRUNTIME140.dll,#1

Signatures

JanelaRAT

rat janelarat

Janelarat family

janelarat

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4052 wrote to memory of 5824 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4052 wrote to memory of 5824 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4052 wrote to memory of 5824 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\VCRUNTIME140.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\VCRUNTIME140.dll,#1

Network

Country Destination Domain Proto
GB 95.101.143.201:443 www.bing.com tcp
US 8.8.8.8:53 cnt-blackrock.geekgalaxy.com udp
US 8.8.8.8:53 jxjmrpc797bm.mydissent.net udp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.179.227:80 c.pki.goog tcp

Files

memory/5824-0-0x00000000023A0000-0x00000000023B0000-memory.dmp

memory/5824-1-0x00000000749CE000-0x00000000749CF000-memory.dmp

memory/5824-2-0x0000000004820000-0x0000000004872000-memory.dmp

memory/5824-3-0x0000000075300000-0x0000000075352000-memory.dmp

memory/5824-4-0x0000000004E30000-0x00000000053D4000-memory.dmp

memory/5824-5-0x0000000004950000-0x00000000049E2000-memory.dmp

memory/5824-6-0x0000000005420000-0x000000000542A000-memory.dmp

memory/5824-7-0x00000000023A0000-0x00000000023B0000-memory.dmp

memory/5824-10-0x00000000749CE000-0x00000000749CF000-memory.dmp

memory/5824-8-0x00000000734C0000-0x00000000734D5000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-04-16 14:25

Reported

2025-04-16 14:28

Platform

win11-20250410-en

Max time kernel

140s

Max time network

111s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\VCRUNTIME140.dll,#1

Signatures

JanelaRAT

rat janelarat

Janelarat family

janelarat

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4308 wrote to memory of 5132 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4308 wrote to memory of 5132 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4308 wrote to memory of 5132 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\VCRUNTIME140.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\VCRUNTIME140.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 cnt-blackrock.geekgalaxy.com udp
NL 52.111.243.30:443 tcp

Files

memory/5132-0-0x0000000000F80000-0x0000000000F90000-memory.dmp

memory/5132-1-0x0000000074D1E000-0x0000000074D1F000-memory.dmp

memory/5132-2-0x0000000004E50000-0x0000000004EA2000-memory.dmp

memory/5132-3-0x0000000075680000-0x00000000756D2000-memory.dmp

memory/5132-4-0x0000000005460000-0x0000000005A06000-memory.dmp

memory/5132-5-0x0000000004FA0000-0x0000000005032000-memory.dmp

memory/5132-6-0x0000000005A90000-0x0000000005A9A000-memory.dmp

memory/5132-7-0x0000000000F80000-0x0000000000F90000-memory.dmp

memory/5132-8-0x0000000073810000-0x0000000073825000-memory.dmp

memory/5132-10-0x0000000074D1E000-0x0000000074D1F000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2025-04-16 14:25

Reported

2025-04-16 14:28

Platform

win10v2004-20250314-en

Max time kernel

104s

Max time network

135s

Command Line

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

Signatures

JanelaRAT

rat janelarat

Janelarat family

janelarat

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\opdrde.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 cnt-blackrock.geekgalaxy.com udp
US 8.8.8.8:53 jxjmrpc797bm.mydissent.net udp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.179.227:80 c.pki.goog tcp

Files

memory/1492-0-0x0000000001B00000-0x0000000001B10000-memory.dmp

memory/1492-1-0x000000007511E000-0x000000007511F000-memory.dmp

memory/1492-2-0x0000000005790000-0x00000000057E2000-memory.dmp

memory/1492-3-0x0000000075AB0000-0x0000000075B02000-memory.dmp

memory/1492-4-0x0000000005DA0000-0x0000000006344000-memory.dmp

memory/1492-5-0x0000000005890000-0x0000000005922000-memory.dmp

memory/1492-6-0x00000000066F0000-0x00000000066FA000-memory.dmp

memory/1492-7-0x0000000001B00000-0x0000000001B10000-memory.dmp

memory/1492-8-0x000000007511E000-0x000000007511F000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2025-04-16 14:25

Reported

2025-04-16 14:28

Platform

win11-20250410-en

Max time kernel

137s

Max time network

104s

Command Line

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

Signatures

JanelaRAT

rat janelarat

Janelarat family

janelarat

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\opdrde.exe N/A

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 cnt-blackrock.geekgalaxy.com udp

Files

memory/1412-0-0x0000000001C60000-0x0000000001C70000-memory.dmp

memory/1412-1-0x000000007440E000-0x000000007440F000-memory.dmp

memory/1412-2-0x00000000058F0000-0x0000000005942000-memory.dmp

memory/1412-3-0x0000000074DC0000-0x0000000074E12000-memory.dmp

memory/1412-4-0x0000000005F00000-0x00000000064A6000-memory.dmp

memory/1412-5-0x00000000059F0000-0x0000000005A82000-memory.dmp

memory/1412-6-0x0000000006970000-0x000000000697A000-memory.dmp

memory/1412-7-0x0000000001C60000-0x0000000001C70000-memory.dmp

memory/1412-8-0x000000007440E000-0x000000007440F000-memory.dmp