Malware Analysis Report

2024-09-22 06:35

Sample ID 240620-ce4qsssepf
Target FluxLora.zip
SHA256 b5af0bc161225e2ec1e0161d4a38af0b30f13a6e9e91f4ed3bc64de4e7940281
Tags
rat default asyncrat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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 Overview

score
10/10

SHA256

b5af0bc161225e2ec1e0161d4a38af0b30f13a6e9e91f4ed3bc64de4e7940281

Threat Level: Known bad

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

Malicious Activity Summary

rat default asyncrat

AsyncRat

Asyncrat family

Async RAT payload

Async RAT payload

Executes dropped EXE

Checks computer location settings

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

Suspicious use of AdjustPrivilegeToken

Scheduled Task/Job: Scheduled Task

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-20 02:00

Signatures

Async RAT payload

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

Asyncrat family

asyncrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-20 02:00

Reported

2024-06-20 02:01

Platform

win10v2004-20240508-en

Max time kernel

47s

Max time network

50s

Command Line

C:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\FluxLora.zip

Signatures

N/A

Processes

C:\Windows\Explorer.exe

C:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\FluxLora.zip

Network

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-20 02:00

Reported

2024-06-20 02:01

Platform

win10v2004-20240508-en

Max time kernel

46s

Max time network

49s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\FluxusV2.exe N/A

Enumerates physical storage devices

Delays execution with timeout.exe

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

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\FluxusV2.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4896 wrote to memory of 4296 N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe C:\Windows\SysWOW64\cmd.exe
PID 4896 wrote to memory of 4296 N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe C:\Windows\SysWOW64\cmd.exe
PID 4896 wrote to memory of 4296 N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe C:\Windows\SysWOW64\cmd.exe
PID 4896 wrote to memory of 712 N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe C:\Windows\SysWOW64\cmd.exe
PID 4896 wrote to memory of 712 N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe C:\Windows\SysWOW64\cmd.exe
PID 4896 wrote to memory of 712 N/A C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe C:\Windows\SysWOW64\cmd.exe
PID 712 wrote to memory of 1144 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 712 wrote to memory of 1144 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 712 wrote to memory of 1144 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 4296 wrote to memory of 1600 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 4296 wrote to memory of 1600 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 4296 wrote to memory of 1600 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\schtasks.exe
PID 712 wrote to memory of 508 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\FluxusV2.exe
PID 712 wrote to memory of 508 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\FluxusV2.exe
PID 712 wrote to memory of 508 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Roaming\FluxusV2.exe

Processes

C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe

"C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\FluxLora.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "FluxusV2" /tr '"C:\Users\Admin\AppData\Roaming\FluxusV2.exe"' & exit

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp56AB.tmp.bat""

C:\Windows\SysWOW64\timeout.exe

timeout 3

C:\Windows\SysWOW64\schtasks.exe

schtasks /create /f /sc onlogon /rl highest /tn "FluxusV2" /tr '"C:\Users\Admin\AppData\Roaming\FluxusV2.exe"'

C:\Users\Admin\AppData\Roaming\FluxusV2.exe

"C:\Users\Admin\AppData\Roaming\FluxusV2.exe"

Network

Country Destination Domain Proto
N/A 127.0.0.1:6700 tcp
N/A 127.0.0.1:6700 tcp
N/A 127.0.0.1:6700 tcp
N/A 127.0.0.1:6700 tcp
N/A 127.0.0.1:6700 tcp
N/A 127.0.0.1:6700 tcp

Files

memory/4896-0-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

memory/4896-1-0x00000000009C0000-0x00000000009D2000-memory.dmp

memory/4896-2-0x0000000074C40000-0x00000000753F0000-memory.dmp

memory/4896-3-0x0000000005450000-0x00000000054EC000-memory.dmp

memory/4896-8-0x0000000074C40000-0x00000000753F0000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp56AB.tmp.bat

MD5 499f9fd2150176d01afb5fe5d00d3ef4
SHA1 1838547ca3cb13b3745ca8ef4fe25db1d09eb320
SHA256 73de81f11dc8e0986dcc9b8823d5b95991ef3efe9f59ef03a51fcd1f8aca7602
SHA512 eab943355bedc971385b1c498367f1e348f97112530b853ac784884e10bfbe8f91fc2a6ae1256980a7642429c47122698c21da7607f8648299d44e40ee2957e0

C:\Users\Admin\AppData\Roaming\FluxusV2.exe

MD5 ace38670c00a34a910a1c5cb502f8f03
SHA1 3bfa515b1b4af4cca5e4d603e427fc2ebc8d5047
SHA256 0c3aa475f5ff4c8c2c271a27582f5480a29063d97006d5440c98409b3659fcbe
SHA512 ff40dccab360baff86e2545e810f6969d22587b750a646a46546e593069bf1d5633a9e20a0534437fc909bfc2d58bb32f840c23b7e879f677c9fbd18a609e0bc

memory/508-13-0x0000000074C40000-0x00000000753F0000-memory.dmp

memory/508-14-0x0000000074C40000-0x00000000753F0000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-06-20 02:00

Reported

2024-06-20 02:01

Platform

win10v2004-20240611-en

Max time kernel

37s

Max time network

36s

Command Line

C:\Windows\system32\NOTEPAD.EXE "C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\READ ME!!!!!!!!!!.txt"

Signatures

N/A

Processes

C:\Windows\system32\NOTEPAD.EXE

C:\Windows\system32\NOTEPAD.EXE "C:\Users\Admin\AppData\Local\Temp\FluxLoraV2\READ ME!!!!!!!!!!.txt"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3932,i,3833046924978547022,12404847742964713612,262144 --variations-seed-version --mojo-platform-channel-handle=4244 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
BE 88.221.83.187:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 187.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp

Files

N/A