Analysis
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max time kernel
150s -
max time network
49s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
03/10/2022, 03:07
Static task
static1
Behavioral task
behavioral1
Sample
c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe
Resource
win7-20220901-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe
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Size
152KB
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MD5
6b4e815ab3a1349974882331eb3c1d63
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SHA1
5890380a435e4673266e8b600a6e4ee41dca6509
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SHA256
c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b
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SHA512
780889d4bf2113b6cbe29cea55daad4eaa0f8b64eea7fcbd8cf63c2c9a002cc62db2287ab20b84c979393807f86f9acbf6ec4a7635a146d182ccf770282fe1ef
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SSDEEP
3072:BhUFgzTQtKrueiygR4O6avJamofZ4oQZiEpaF:2g/QtKSMgR56avUm2W74
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" c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" youfoac.exe -
Executes dropped EXE 1 IoCs
pid Process 984 youfoac.exe -
Loads dropped DLL 2 IoCs
pid Process 1896 c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe 1896 c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe -
Adds Run key to start application 2 TTPs 52 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /n" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /z" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /P" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /Z" c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /o" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /v" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /H" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /E" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /D" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /M" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /G" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /k" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /X" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /w" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /m" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /Q" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /t" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /c" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /d" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /j" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /J" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /b" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /O" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /g" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /R" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /S" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /W" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /K" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /q" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /V" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /U" youfoac.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /r" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /x" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /B" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /e" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /A" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /C" youfoac.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /I" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /i" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /s" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /y" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /F" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /l" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /a" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /Z" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /p" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /N" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /f" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /L" youfoac.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\youfoac = "C:\\Users\\Admin\\youfoac.exe /u" youfoac.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 1896 c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe 984 youfoac.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1896 c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe 984 youfoac.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1896 wrote to memory of 984 1896 c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe 27 PID 1896 wrote to memory of 984 1896 c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe 27 PID 1896 wrote to memory of 984 1896 c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe 27 PID 1896 wrote to memory of 984 1896 c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.exe"C:\Users\Admin\AppData\Local\Temp\c8b8481d29bdaf8422d13466e38c20538ccbed8d4e86b0839a84faf1af98525b.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:1896 -
C:\Users\Admin\youfoac.exe"C:\Users\Admin\youfoac.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:984
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
152KB
MD5e354a77b04633f2e8e7d395ec1ade5a1
SHA1fa6d4b2d4547b2a8e2b043bd3055bdb254807eaa
SHA25669c3d5ee44b4562c7f43e3525ffbe949d331dab1ffe6b661634087dd989441f3
SHA5123c846edbbcf2177fdd18a0c57477acc95575ad7f404c0364517b31a2c3bfff65153607c41417cdeed34c016db896cfdb055761ea622baf41a44363794b489376
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Filesize
152KB
MD5e354a77b04633f2e8e7d395ec1ade5a1
SHA1fa6d4b2d4547b2a8e2b043bd3055bdb254807eaa
SHA25669c3d5ee44b4562c7f43e3525ffbe949d331dab1ffe6b661634087dd989441f3
SHA5123c846edbbcf2177fdd18a0c57477acc95575ad7f404c0364517b31a2c3bfff65153607c41417cdeed34c016db896cfdb055761ea622baf41a44363794b489376
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Filesize
152KB
MD5e354a77b04633f2e8e7d395ec1ade5a1
SHA1fa6d4b2d4547b2a8e2b043bd3055bdb254807eaa
SHA25669c3d5ee44b4562c7f43e3525ffbe949d331dab1ffe6b661634087dd989441f3
SHA5123c846edbbcf2177fdd18a0c57477acc95575ad7f404c0364517b31a2c3bfff65153607c41417cdeed34c016db896cfdb055761ea622baf41a44363794b489376
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Filesize
152KB
MD5e354a77b04633f2e8e7d395ec1ade5a1
SHA1fa6d4b2d4547b2a8e2b043bd3055bdb254807eaa
SHA25669c3d5ee44b4562c7f43e3525ffbe949d331dab1ffe6b661634087dd989441f3
SHA5123c846edbbcf2177fdd18a0c57477acc95575ad7f404c0364517b31a2c3bfff65153607c41417cdeed34c016db896cfdb055761ea622baf41a44363794b489376