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Analysis
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max time kernel
235s -
max time network
194s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
03/12/2022, 19:06
Static task
static1
Behavioral task
behavioral1
Sample
d7b4cc7f5c1d6159af3cf041bb89dafbc36e711edb9fb8bd47399212e94972a9.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
d7b4cc7f5c1d6159af3cf041bb89dafbc36e711edb9fb8bd47399212e94972a9.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
d7b4cc7f5c1d6159af3cf041bb89dafbc36e711edb9fb8bd47399212e94972a9.exe
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Size
228KB
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MD5
f63843c83905455cdcc73951287857d9
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SHA1
c115fd9fd1acb588474964118a97af2f241faddf
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SHA256
d7b4cc7f5c1d6159af3cf041bb89dafbc36e711edb9fb8bd47399212e94972a9
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SHA512
b38cd34e13b9df77fbe751c64c80b976e20d2e7277fc97ec56d524aad902fbe41b93e20aa4fe75e1f4579b9261421367aa4b54f914582b1f4a6bff65e8226ec0
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SSDEEP
6144:TzH7PvUvbTLzVBEGLUsDFlWU+Xo9clqiqTGbPQglaqM:TzH7Pv0WBo9UnbPQgnM
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" cuaya.exe -
Executes dropped EXE 1 IoCs
pid Process 1176 cuaya.exe -
Loads dropped DLL 2 IoCs
pid Process 2024 d7b4cc7f5c1d6159af3cf041bb89dafbc36e711edb9fb8bd47399212e94972a9.exe 2024 d7b4cc7f5c1d6159af3cf041bb89dafbc36e711edb9fb8bd47399212e94972a9.exe -
Adds Run key to start application 2 TTPs 46 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /i" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /Y" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /C" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /u" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /j" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /N" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /p" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /E" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /Q" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /s" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /b" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /M" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /L" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /f" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /F" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /I" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /O" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /g" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /w" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /K" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /c" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /R" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /n" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /d" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /G" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /Z" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /J" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /A" cuaya.exe Key created \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\ cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /h" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /t" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /V" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /q" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /W" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /U" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /X" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /o" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /m" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /S" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /P" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /k" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /D" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /r" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /T" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /v" cuaya.exe Set value (str) \REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\cuaya = "C:\\Users\\Admin\\cuaya.exe /x" cuaya.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 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe 1176 cuaya.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2024 d7b4cc7f5c1d6159af3cf041bb89dafbc36e711edb9fb8bd47399212e94972a9.exe 1176 cuaya.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2024 wrote to memory of 1176 2024 d7b4cc7f5c1d6159af3cf041bb89dafbc36e711edb9fb8bd47399212e94972a9.exe 28 PID 2024 wrote to memory of 1176 2024 d7b4cc7f5c1d6159af3cf041bb89dafbc36e711edb9fb8bd47399212e94972a9.exe 28 PID 2024 wrote to memory of 1176 2024 d7b4cc7f5c1d6159af3cf041bb89dafbc36e711edb9fb8bd47399212e94972a9.exe 28 PID 2024 wrote to memory of 1176 2024 d7b4cc7f5c1d6159af3cf041bb89dafbc36e711edb9fb8bd47399212e94972a9.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\d7b4cc7f5c1d6159af3cf041bb89dafbc36e711edb9fb8bd47399212e94972a9.exe"C:\Users\Admin\AppData\Local\Temp\d7b4cc7f5c1d6159af3cf041bb89dafbc36e711edb9fb8bd47399212e94972a9.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2024 -
C:\Users\Admin\cuaya.exe"C:\Users\Admin\cuaya.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:1176
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
228KB
MD5de6cd1e43bff144edbe966214e310cd1
SHA1dd28cab9c8c4b61fb26b8dca65f4aa15a9b6bce7
SHA2567ea975f751f8c9fe918bde57605a3e006259dc2ea90f1d011cf0c3b5de9dbba0
SHA5125bab8937d2b0b3d7f42f5bc5660b03d5f19aad776cc19d4b2aeb1b61099e6fcdcd3cbf316c5f65db7bf5d4c55b98a238f7884213acd795b30db125f82339003a
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Filesize
228KB
MD5de6cd1e43bff144edbe966214e310cd1
SHA1dd28cab9c8c4b61fb26b8dca65f4aa15a9b6bce7
SHA2567ea975f751f8c9fe918bde57605a3e006259dc2ea90f1d011cf0c3b5de9dbba0
SHA5125bab8937d2b0b3d7f42f5bc5660b03d5f19aad776cc19d4b2aeb1b61099e6fcdcd3cbf316c5f65db7bf5d4c55b98a238f7884213acd795b30db125f82339003a
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Filesize
228KB
MD5de6cd1e43bff144edbe966214e310cd1
SHA1dd28cab9c8c4b61fb26b8dca65f4aa15a9b6bce7
SHA2567ea975f751f8c9fe918bde57605a3e006259dc2ea90f1d011cf0c3b5de9dbba0
SHA5125bab8937d2b0b3d7f42f5bc5660b03d5f19aad776cc19d4b2aeb1b61099e6fcdcd3cbf316c5f65db7bf5d4c55b98a238f7884213acd795b30db125f82339003a
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Filesize
228KB
MD5de6cd1e43bff144edbe966214e310cd1
SHA1dd28cab9c8c4b61fb26b8dca65f4aa15a9b6bce7
SHA2567ea975f751f8c9fe918bde57605a3e006259dc2ea90f1d011cf0c3b5de9dbba0
SHA5125bab8937d2b0b3d7f42f5bc5660b03d5f19aad776cc19d4b2aeb1b61099e6fcdcd3cbf316c5f65db7bf5d4c55b98a238f7884213acd795b30db125f82339003a