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Analysis
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max time kernel
152s -
max time network
130s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
02/10/2022, 00:43
Static task
static1
Behavioral task
behavioral1
Sample
b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe
Resource
win7-20220901-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe
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Size
212KB
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MD5
7267c79c98b4302c237d622cefac81e5
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SHA1
76492797a0681bf31a3f421d19c206fd8246e737
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SHA256
b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a
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SHA512
8928bc6b47923672c143bee50fb007b78563bd709e71a7e4071822e9775110d1aff780b42846c4dada63fb3eab488d31e14a1a1fe5426244ec605bccd2f4691c
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SSDEEP
3072:AvCh2UjpESxFd3MiaDN/bG0sCOL5pNk+ZxDn/Sg7:oOFd3MiK/SxCOL5pDr
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-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" ryteil.exe Set value (int) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe -
Executes dropped EXE 1 IoCs
pid Process 3744 ryteil.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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\ b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /t" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /i" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /v" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /m" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /s" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /z" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /x" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /h" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /c" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /k" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /a" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /d" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /j" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /r" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /q" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /p" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /c" b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /y" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /o" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /e" ryteil.exe Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\ ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /l" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /u" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /b" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /w" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /g" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /n" ryteil.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ryteil = "C:\\Users\\Admin\\ryteil.exe /f" ryteil.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 4912 b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe 4912 b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe 3744 ryteil.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4912 b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe 3744 ryteil.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4912 wrote to memory of 3744 4912 b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe 84 PID 4912 wrote to memory of 3744 4912 b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe 84 PID 4912 wrote to memory of 3744 4912 b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe"C:\Users\Admin\AppData\Local\Temp\b4cfc917699406360d986d7c44d4f58f08b549528c81add2834f17970ce7e29a.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4912 -
C:\Users\Admin\ryteil.exe"C:\Users\Admin\ryteil.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:3744
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
212KB
MD5a1ed2c06e924b41673ff4934c52cd3ac
SHA12dfe452ff5b90fb1baaa448afe025d06b52e126c
SHA256a570f81631565be1912003c4e650a4cfe9704f53507104eda38270edc80a988a
SHA512cbe3ad4465445c3724164938049e54f642e253d67cbbaee27d63b34be65fe437748e0c1e43f40397ed01d8aa8d16133ac6eae0a06b76bf3deb1fe90558fb7aa6
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Filesize
212KB
MD5a1ed2c06e924b41673ff4934c52cd3ac
SHA12dfe452ff5b90fb1baaa448afe025d06b52e126c
SHA256a570f81631565be1912003c4e650a4cfe9704f53507104eda38270edc80a988a
SHA512cbe3ad4465445c3724164938049e54f642e253d67cbbaee27d63b34be65fe437748e0c1e43f40397ed01d8aa8d16133ac6eae0a06b76bf3deb1fe90558fb7aa6