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Analysis
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max time kernel
156s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
04/10/2022, 04:10
Static task
static1
Behavioral task
behavioral1
Sample
8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe
Resource
win7-20220812-en
windows7-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
10 signatures
150 seconds
General
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Target
8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe
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Size
228KB
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MD5
563e5001ae9d9ddae5e829cba5509630
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SHA1
4752c3c1616c1fb6999b5d29119f8a26b8db220a
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SHA256
8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52
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SHA512
4fe802c0a9618ea54daa7e93c13be85b7dbb2f0cb45347aa6bc2bad597a04058314b34cfbe5405b34eae840e346f345cdd8d925a681259166e79e52eeee417e8
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SSDEEP
3072:oItJVmBl7lZKXxdyMDb7eOTcRLLQ9rkJCXTC+KltZHP:dS9TKBAMypLYqP
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" 8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" fuuecoc.exe -
Executes dropped EXE 1 IoCs
pid Process 4576 fuuecoc.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 8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.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\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /f" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /q" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /h" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /b" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /t" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /u" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /x" fuuecoc.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /a" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /r" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /n" 8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /d" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /g" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /w" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /i" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /p" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /j" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /s" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /l" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /m" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /n" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /z" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /k" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /v" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /e" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /y" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /o" fuuecoc.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fuuecoc = "C:\\Users\\Admin\\fuuecoc.exe /c" fuuecoc.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum 8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum fuuecoc.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 fuuecoc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings 8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2204 8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe 2204 8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe 4576 fuuecoc.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2204 8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe 4576 fuuecoc.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2204 wrote to memory of 4576 2204 8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe 86 PID 2204 wrote to memory of 4576 2204 8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe 86 PID 2204 wrote to memory of 4576 2204 8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe"C:\Users\Admin\AppData\Local\Temp\8c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Maps connected drives based on registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2204 -
C:\Users\Admin\fuuecoc.exe"C:\Users\Admin\fuuecoc.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:4576
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:3944
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
228KB
MD5563e5001ae9d9ddae5e829cba5509630
SHA14752c3c1616c1fb6999b5d29119f8a26b8db220a
SHA2568c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52
SHA5124fe802c0a9618ea54daa7e93c13be85b7dbb2f0cb45347aa6bc2bad597a04058314b34cfbe5405b34eae840e346f345cdd8d925a681259166e79e52eeee417e8
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Filesize
228KB
MD5563e5001ae9d9ddae5e829cba5509630
SHA14752c3c1616c1fb6999b5d29119f8a26b8db220a
SHA2568c1b4fc32e9961c801ec5fc82aca7d062b2558b1dcb95de6df449b47b5cd1a52
SHA5124fe802c0a9618ea54daa7e93c13be85b7dbb2f0cb45347aa6bc2bad597a04058314b34cfbe5405b34eae840e346f345cdd8d925a681259166e79e52eeee417e8