Analysis
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max time kernel
93s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
02/10/2022, 00:11
Static task
static1
Behavioral task
behavioral1
Sample
734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe
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Size
224KB
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MD5
6f1502a0cb51b348a51beecaac85bfa0
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SHA1
f0c8b4d6895f505580abeead1663509bbe46b334
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SHA256
734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c
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SHA512
742c46f592ba80980ce14d6d382f03145cdacd14ec5e8feb6c4542fc123441d231f2ef9387e6796df659fa5a6c2ef5e0253e053c9ddcafd7ddac0de3828d1ff2
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SSDEEP
3072:p4gaOXfWRrIMNRlZ62Pal2LBJXmzOHm5WZ3K+MCfnG/bXMPhR:prXepp3PJXCOGY3eunC7M
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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" cuotuiv.exe -
Executes dropped EXE 1 IoCs
pid Process 1080 cuotuiv.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation 734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /d" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /f" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /k" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /b" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /u" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /p" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /v" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /f" 734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /s" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /a" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /e" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /l" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /h" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /c" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /z" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /t" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /y" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /q" cuotuiv.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /m" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /o" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /g" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /w" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /r" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /i" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /j" cuotuiv.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /x" cuotuiv.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cuotuiv = "C:\\Users\\Admin\\cuotuiv.exe /n" cuotuiv.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 4196 734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe 4196 734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe 1080 cuotuiv.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4196 734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe 1080 cuotuiv.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4196 wrote to memory of 1080 4196 734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe 88 PID 4196 wrote to memory of 1080 4196 734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe 88 PID 4196 wrote to memory of 1080 4196 734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe"C:\Users\Admin\AppData\Local\Temp\734f00eca0f8673b03e2ec587076b3451bdb0c8d53561ac15f2632d665de613c.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4196 -
C:\Users\Admin\cuotuiv.exe"C:\Users\Admin\cuotuiv.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:1080
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
224KB
MD5c19f4c2de642aea9b6548e0e176d4c3a
SHA1ab146c2676570bd671c05a2895ae07d012d8d0e4
SHA256f4c1c8311921d4753f6e94408b739ec814e9c57abf590c8f3bef2ae9842bf2cc
SHA51289f929adafeb784a89a59d012afdea7cf003d252cfd2879f5d3701f5947f8c58692c86c3e4f27056416d7f9a8e5ed0ff228963f4cb7cbc3e859b7a6708dfda1c
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Filesize
224KB
MD5c19f4c2de642aea9b6548e0e176d4c3a
SHA1ab146c2676570bd671c05a2895ae07d012d8d0e4
SHA256f4c1c8311921d4753f6e94408b739ec814e9c57abf590c8f3bef2ae9842bf2cc
SHA51289f929adafeb784a89a59d012afdea7cf003d252cfd2879f5d3701f5947f8c58692c86c3e4f27056416d7f9a8e5ed0ff228963f4cb7cbc3e859b7a6708dfda1c