Analysis
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max time kernel
151s -
max time network
49s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
29-11-2022 17:20
Static task
static1
Behavioral task
behavioral1
Sample
a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe
Resource
win7-20220901-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe
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Size
132KB
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MD5
560f0b191033ab1ee8975559b31cad40
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SHA1
0a01731f7d7ae93fa21739147ba828ddc131b901
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SHA256
a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6
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SHA512
e3473885f0d36f219a714c22a08b7ef3930c35af5e56d35ff841b71561379cd321fd9e2a4e67922f1e84df0f96faf73bc9f37ecd4478436cb5d85bcbd01ec9a5
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SSDEEP
1536:addi3uQIIKZrDJZ3JuIuRWIelOQ212I/6jDSUaWpEEHCjP4YTyorkt5ycQg:EjH8IuRrjWmEiyoryLX
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" rioev.exe -
Executes dropped EXE 1 IoCs
pid Process 320 rioev.exe -
Loads dropped DLL 2 IoCs
pid Process 1436 a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe 1436 a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /x" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /d" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /k" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /h" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /i" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /g" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /a" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /u" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /o" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /t" rioev.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /q" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /m" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /n" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /m" a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /v" rioev.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /b" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /y" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /f" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /s" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /z" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /w" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /l" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /p" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /j" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /r" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /e" rioev.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\rioev = "C:\\Users\\Admin\\rioev.exe /c" rioev.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1436 a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe 320 rioev.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1436 a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe 320 rioev.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1436 wrote to memory of 320 1436 a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe 27 PID 1436 wrote to memory of 320 1436 a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe 27 PID 1436 wrote to memory of 320 1436 a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe 27 PID 1436 wrote to memory of 320 1436 a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe"C:\Users\Admin\AppData\Local\Temp\a4a5f68c4c9b77e3a2bd06f47d02a29e8488eb98bf9b685489383de53645d8b6.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1436 -
C:\Users\Admin\rioev.exe"C:\Users\Admin\rioev.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:320
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
132KB
MD5bf8e2925dcb15c190bcc852095ca819b
SHA19d0607942b4f8bda7c7035328b486a49d1c4e68d
SHA256be873f46013cd5347d58e67387b72528229f0bcdc200d033c0830a7c272b30b2
SHA512483a5b42d0410ffe347777fa446f373a6fa056d9ee70a93011acc4a28c201a2946e536f1ee28cb0d3aa4b624f85fdcca975f5da96966d89aa784d090be311ea4
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Filesize
132KB
MD5bf8e2925dcb15c190bcc852095ca819b
SHA19d0607942b4f8bda7c7035328b486a49d1c4e68d
SHA256be873f46013cd5347d58e67387b72528229f0bcdc200d033c0830a7c272b30b2
SHA512483a5b42d0410ffe347777fa446f373a6fa056d9ee70a93011acc4a28c201a2946e536f1ee28cb0d3aa4b624f85fdcca975f5da96966d89aa784d090be311ea4
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Filesize
132KB
MD5bf8e2925dcb15c190bcc852095ca819b
SHA19d0607942b4f8bda7c7035328b486a49d1c4e68d
SHA256be873f46013cd5347d58e67387b72528229f0bcdc200d033c0830a7c272b30b2
SHA512483a5b42d0410ffe347777fa446f373a6fa056d9ee70a93011acc4a28c201a2946e536f1ee28cb0d3aa4b624f85fdcca975f5da96966d89aa784d090be311ea4
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Filesize
132KB
MD5bf8e2925dcb15c190bcc852095ca819b
SHA19d0607942b4f8bda7c7035328b486a49d1c4e68d
SHA256be873f46013cd5347d58e67387b72528229f0bcdc200d033c0830a7c272b30b2
SHA512483a5b42d0410ffe347777fa446f373a6fa056d9ee70a93011acc4a28c201a2946e536f1ee28cb0d3aa4b624f85fdcca975f5da96966d89aa784d090be311ea4