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Analysis
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max time kernel
151s -
max time network
43s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
19/09/2022, 03:22
Static task
static1
Behavioral task
behavioral1
Sample
25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe
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Size
176KB
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MD5
89372e07625642abca9605c561263531
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SHA1
19366790f3ade208b92f3620fcc80d4f037ee956
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SHA256
25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d
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SHA512
a70718b93128b708c9c07523b3f23e597d6151d9b24009ccb599c4844f1d084475333fa2416a60f95d96b9b0ac4c1645f39ae864cffb8720131a0648012c89f8
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SSDEEP
3072:Dnol91MwYT9M8WAXKdEOdO6Knvmb7/D26YPjvOuc7WWYKlEE2js11lUyGevo:rY91MwY9JWAXKqeKnvmb7/D26YrvOucE
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-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yuuafu.exe Set value (int) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe -
Executes dropped EXE 1 IoCs
pid Process 1324 yuuafu.exe -
Loads dropped DLL 2 IoCs
pid Process 1504 25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe 1504 25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe -
Adds Run key to start application 2 TTPs 53 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /X" 25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /j" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /c" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /k" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /a" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /N" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /C" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /S" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /Y" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /X" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /B" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /l" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /s" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /J" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /b" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /A" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /g" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /R" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /Q" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /f" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /y" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /u" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /o" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /E" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /G" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /O" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /r" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /t" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /V" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /x" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /q" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /d" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /L" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /K" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /h" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /m" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /M" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /i" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /z" yuuafu.exe Key created \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /w" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /U" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /D" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /n" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /v" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /W" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /T" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /Z" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /p" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /e" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /H" yuuafu.exe Set value (str) \REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\yuuafu = "C:\\Users\\Admin\\yuuafu.exe /P" yuuafu.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 1504 25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe 1324 yuuafu.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1504 25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe 1324 yuuafu.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1504 wrote to memory of 1324 1504 25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe 26 PID 1504 wrote to memory of 1324 1504 25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe 26 PID 1504 wrote to memory of 1324 1504 25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe 26 PID 1504 wrote to memory of 1324 1504 25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe 26
Processes
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C:\Users\Admin\AppData\Local\Temp\25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.exe"C:\Users\Admin\AppData\Local\Temp\25bf87f1e557c891cdb6ff97f67e9a76eb9fb9b09277ec0e3443c4df7b43550d.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:1504 -
C:\Users\Admin\yuuafu.exe"C:\Users\Admin\yuuafu.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:1324
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
176KB
MD52722e82ea1b7f6d476dc0a67827f8cae
SHA1e1f0dad74f7ce78743672057d454dc50e47cbbfd
SHA2562b4bf6ce7ecc5308db958d3506112b0e24ae49379514d8bb793ba9b6aa7b26c9
SHA512196f2751cd276295b2a366c7f115b463ed7cc604c6c33046ba04eb8181c399dfb74ac8a4b762ae3815e2fd64f3421cbfb0bccf1eb1e658d6b4b3e8c40fb168f6
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Filesize
176KB
MD52722e82ea1b7f6d476dc0a67827f8cae
SHA1e1f0dad74f7ce78743672057d454dc50e47cbbfd
SHA2562b4bf6ce7ecc5308db958d3506112b0e24ae49379514d8bb793ba9b6aa7b26c9
SHA512196f2751cd276295b2a366c7f115b463ed7cc604c6c33046ba04eb8181c399dfb74ac8a4b762ae3815e2fd64f3421cbfb0bccf1eb1e658d6b4b3e8c40fb168f6
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Filesize
176KB
MD52722e82ea1b7f6d476dc0a67827f8cae
SHA1e1f0dad74f7ce78743672057d454dc50e47cbbfd
SHA2562b4bf6ce7ecc5308db958d3506112b0e24ae49379514d8bb793ba9b6aa7b26c9
SHA512196f2751cd276295b2a366c7f115b463ed7cc604c6c33046ba04eb8181c399dfb74ac8a4b762ae3815e2fd64f3421cbfb0bccf1eb1e658d6b4b3e8c40fb168f6
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Filesize
176KB
MD52722e82ea1b7f6d476dc0a67827f8cae
SHA1e1f0dad74f7ce78743672057d454dc50e47cbbfd
SHA2562b4bf6ce7ecc5308db958d3506112b0e24ae49379514d8bb793ba9b6aa7b26c9
SHA512196f2751cd276295b2a366c7f115b463ed7cc604c6c33046ba04eb8181c399dfb74ac8a4b762ae3815e2fd64f3421cbfb0bccf1eb1e658d6b4b3e8c40fb168f6