Analysis
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max time kernel
155s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
06/11/2022, 11:35
Static task
static1
Behavioral task
behavioral1
Sample
b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.exe
Resource
win7-20220901-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.exe
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Size
172KB
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MD5
0772ac8fb97f203f54060dea32014eea
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SHA1
03109c34a8b139a0dd6f26caa8713ddf4881591d
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SHA256
b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda
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SHA512
9d57409c81fc494c0924481227de23b98dd670704d94f73078d2656b1406d8e49514a5d53409cd614222cce7329e9f411e4d2fca0769952794fbb44a5280023d
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SSDEEP
3072:3e3QXXeRgw3tiKnvmb7/D26nYNpnHzqTT8RUFwjkKvLg3dvCgIHYBnmWZAlGbBQ1:OAXXeR1UKnvmb7/D26nSnTqTT8RUFwjH
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" b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.exe Set value (int) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yscik.exe -
Executes dropped EXE 1 IoCs
pid Process 4432 yscik.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 b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.exe -
Adds Run key to start application 2 TTPs 53 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /S" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /a" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /z" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /h" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /D" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /X" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /g" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /x" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /j" yscik.exe Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\ b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /Z" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /H" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /T" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /A" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /F" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /I" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /c" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /u" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /s" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /B" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /P" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /N" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /l" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /k" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /Y" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /q" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /O" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /t" yscik.exe Key created \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /U" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /p" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /f" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /M" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /W" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /r" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /r" b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /J" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /G" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /V" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /Q" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /y" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /v" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /b" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /L" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /n" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /E" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /m" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /C" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /w" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /e" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /K" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /R" yscik.exe Set value (str) \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yscik = "C:\\Users\\Admin\\yscik.exe /d" yscik.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 4028 b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.exe 4028 b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe 4432 yscik.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4028 b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.exe 4432 yscik.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4028 wrote to memory of 4432 4028 b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.exe 79 PID 4028 wrote to memory of 4432 4028 b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.exe 79 PID 4028 wrote to memory of 4432 4028 b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.exe 79
Processes
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C:\Users\Admin\AppData\Local\Temp\b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.exe"C:\Users\Admin\AppData\Local\Temp\b4dce3f7e034f835e822c19fd27064efe0f7b2d4fc7fa0ace526c8edd78a9bda.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:4028 -
C:\Users\Admin\yscik.exe"C:\Users\Admin\yscik.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:4432
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
172KB
MD530015d0fe9247a19a25797b05d97b76c
SHA1281422b65a354dff11b6a0bb7f6646f17286af57
SHA25681c998cd56346cbe409b0d47fa38223108f2b7b7c5af6007e184d8af42df0b81
SHA512192b4cb58b893b6387fce559e940a59c45bed735cc22637c13399b995365660025a003dc72d9fa2c51505351e883f903df7c0014b2a5e11b67c0bddb5489c491
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Filesize
172KB
MD530015d0fe9247a19a25797b05d97b76c
SHA1281422b65a354dff11b6a0bb7f6646f17286af57
SHA25681c998cd56346cbe409b0d47fa38223108f2b7b7c5af6007e184d8af42df0b81
SHA512192b4cb58b893b6387fce559e940a59c45bed735cc22637c13399b995365660025a003dc72d9fa2c51505351e883f903df7c0014b2a5e11b67c0bddb5489c491