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, 16:29
Static task
static1
Behavioral task
behavioral1
Sample
ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe
Resource
win7-20220901-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe
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Size
164KB
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MD5
499342fb518131cc69c495e6e33e36e8
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SHA1
47016b83eceb84444562f3c672900e8f85ddbb81
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SHA256
ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56
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SHA512
6d4b821c0fa4f9af73542f2df4d824ccc39b9dabc4526360cbf582fb64b56549bd78c1483df13d1c9156a4f8537fd6ca1612ec555422aa3b43260d8e824dc048
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SSDEEP
1536:jJJNV0NL58CCbVVh1oI7HBbN4432N4Y639e2DTK3FrkDas6C6NXyEUTPmNh6GvDk:8NtEbVVX9hh443S16BDaO+ZODEjNoyg
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" ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe Set value (int) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" keuocal.exe -
Executes dropped EXE 1 IoCs
pid Process 940 keuocal.exe -
Loads dropped DLL 2 IoCs
pid Process 852 ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe 852 ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe -
Adds Run key to start application 2 TTPs 28 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /o" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /v" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /c" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /f" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /a" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /h" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /y" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /k" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /j" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /e" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /t" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /w" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /r" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /p" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /g" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /w" ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /s" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /q" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /n" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /i" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /u" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /b" keuocal.exe Key created \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\ ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /x" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /d" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /m" keuocal.exe Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\keuocal = "C:\\Users\\Admin\\keuocal.exe /l" keuocal.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 852 ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe 940 keuocal.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 852 ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe 940 keuocal.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 852 wrote to memory of 940 852 ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe 27 PID 852 wrote to memory of 940 852 ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe 27 PID 852 wrote to memory of 940 852 ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe 27 PID 852 wrote to memory of 940 852 ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.exe"C:\Users\Admin\AppData\Local\Temp\ca8e925c1e7f1e9143ca3646270fdb2a3caa4759bdf62bd768a924847673cf56.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:852 -
C:\Users\Admin\keuocal.exe"C:\Users\Admin\keuocal.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:940
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
164KB
MD5b66b1f0a42cfb15a48e13ca69f80b4b7
SHA1eccffc80784db5ce13b8f212e3b3c83867eb983b
SHA256e3725703b43047339c1e8334ee4b24f8bf4e7d2cdb800847430bc5d9f2f0af1b
SHA5126730d35882a54f356ccd74b36c6a04231e2954530470db4ac2e908f56c6de49e4c64ad4685fc976502adb60c98250ad8951425df5829c105417e8e5b8c226ced
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Filesize
164KB
MD5b66b1f0a42cfb15a48e13ca69f80b4b7
SHA1eccffc80784db5ce13b8f212e3b3c83867eb983b
SHA256e3725703b43047339c1e8334ee4b24f8bf4e7d2cdb800847430bc5d9f2f0af1b
SHA5126730d35882a54f356ccd74b36c6a04231e2954530470db4ac2e908f56c6de49e4c64ad4685fc976502adb60c98250ad8951425df5829c105417e8e5b8c226ced
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Filesize
164KB
MD5b66b1f0a42cfb15a48e13ca69f80b4b7
SHA1eccffc80784db5ce13b8f212e3b3c83867eb983b
SHA256e3725703b43047339c1e8334ee4b24f8bf4e7d2cdb800847430bc5d9f2f0af1b
SHA5126730d35882a54f356ccd74b36c6a04231e2954530470db4ac2e908f56c6de49e4c64ad4685fc976502adb60c98250ad8951425df5829c105417e8e5b8c226ced
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Filesize
164KB
MD5b66b1f0a42cfb15a48e13ca69f80b4b7
SHA1eccffc80784db5ce13b8f212e3b3c83867eb983b
SHA256e3725703b43047339c1e8334ee4b24f8bf4e7d2cdb800847430bc5d9f2f0af1b
SHA5126730d35882a54f356ccd74b36c6a04231e2954530470db4ac2e908f56c6de49e4c64ad4685fc976502adb60c98250ad8951425df5829c105417e8e5b8c226ced