Malware Analysis Report

2025-08-10 19:48

Sample ID 250416-rpjwpsssbz
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: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

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

f6edcd66b7c14920bc0f820eaf537bf5ee101c91b618ea3fbbb1b8978a40a775

Threat Level: Known bad

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

Malicious Activity Summary

janelarat discovery rat

JanelaRAT

Janelarat family

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-04-16 14:22

Signatures

Janelarat family

janelarat

Unsigned PE

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

Analysis: behavioral3

Detonation Overview

Submitted

2025-04-16 14:22

Reported

2025-04-16 14:24

Platform

win10v2004-20250314-en

Max time kernel

104s

Max time network

136s

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/3200-0-0x0000000000B90000-0x0000000000BA0000-memory.dmp

memory/3200-1-0x0000000074C2E000-0x0000000074C2F000-memory.dmp

memory/3200-2-0x0000000004E60000-0x0000000004EB2000-memory.dmp

memory/3200-3-0x00000000755C0000-0x0000000075612000-memory.dmp

memory/3200-4-0x0000000005470000-0x0000000005A14000-memory.dmp

memory/3200-5-0x0000000004F60000-0x0000000004FF2000-memory.dmp

memory/3200-6-0x0000000005E00000-0x0000000005E0A000-memory.dmp

memory/3200-7-0x0000000000B90000-0x0000000000BA0000-memory.dmp

memory/3200-8-0x0000000074C2E000-0x0000000074C2F000-memory.dmp

Analysis: behavioral4

Detonation Overview

Submitted

2025-04-16 14:22

Reported

2025-04-16 14:24

Platform

win11-20250410-en

Max time kernel

101s

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/3832-0-0x0000000001800000-0x0000000001810000-memory.dmp

memory/3832-1-0x0000000074ABE000-0x0000000074ABF000-memory.dmp

memory/3832-2-0x00000000055F0000-0x0000000005642000-memory.dmp

memory/3832-3-0x0000000075470000-0x00000000754C2000-memory.dmp

memory/3832-4-0x0000000005C00000-0x00000000061A6000-memory.dmp

memory/3832-5-0x00000000056F0000-0x0000000005782000-memory.dmp

memory/3832-6-0x0000000006680000-0x000000000668A000-memory.dmp

memory/3832-7-0x0000000001800000-0x0000000001810000-memory.dmp

memory/3832-8-0x0000000074ABE000-0x0000000074ABF000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2025-04-16 14:22

Reported

2025-04-16 14:24

Platform

win10v2004-20250314-en

Max time kernel

140s

Max time network

135s

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 3752 wrote to memory of 2660 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3752 wrote to memory of 2660 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3752 wrote to memory of 2660 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
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/2660-0-0x00000000029E0000-0x00000000029F0000-memory.dmp

memory/2660-1-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

memory/2660-2-0x0000000002D20000-0x0000000002D72000-memory.dmp

memory/2660-3-0x0000000075590000-0x00000000755E2000-memory.dmp

memory/2660-4-0x0000000005710000-0x0000000005CB4000-memory.dmp

memory/2660-5-0x0000000005200000-0x0000000005292000-memory.dmp

memory/2660-6-0x00000000056E0000-0x00000000056EA000-memory.dmp

memory/2660-7-0x00000000029E0000-0x00000000029F0000-memory.dmp

memory/2660-8-0x0000000073750000-0x0000000073765000-memory.dmp

memory/2660-10-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2025-04-16 14:22

Reported

2025-04-16 14:24

Platform

win11-20250410-en

Max time kernel

140s

Max time network

104s

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 5808 wrote to memory of 5852 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5808 wrote to memory of 5852 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 5808 wrote to memory of 5852 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

Files

memory/5852-0-0x0000000001180000-0x0000000001190000-memory.dmp

memory/5852-1-0x00000000742FE000-0x00000000742FF000-memory.dmp

memory/5852-2-0x0000000005220000-0x0000000005272000-memory.dmp

memory/5852-3-0x0000000074C60000-0x0000000074CB2000-memory.dmp

memory/5852-4-0x0000000005830000-0x0000000005DD6000-memory.dmp

memory/5852-5-0x0000000005320000-0x00000000053B2000-memory.dmp

memory/5852-6-0x0000000005DE0000-0x0000000005DEA000-memory.dmp

memory/5852-7-0x0000000001180000-0x0000000001190000-memory.dmp

memory/5852-8-0x0000000072DF0000-0x0000000072E05000-memory.dmp

memory/5852-10-0x00000000742FE000-0x00000000742FF000-memory.dmp