Analysis
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max time kernel
196s -
max time network
198s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
07-11-2022 20:45
Static task
static1
Behavioral task
behavioral1
Sample
6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.exe
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Size
160KB
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MD5
013a798498536f0b8321c9711cc84200
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SHA1
e6e084e89ace5ba49f18006d42e863a2f507f003
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SHA256
6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99
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SHA512
4b0ab8a1d8042066bc720b2353315d2de4e3c04ae409f7c0c6c7f3f431cb6433dde2384d79db9d8c1ae6b84ec2caa23b617e20913d10de0e198ac5aefeeca585
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SSDEEP
3072:JhaxJptfKqOdBsebgeDyJiqmdoTtawZPotUPvPDspYxjatL0JiTeDOokR49M6e3t:naDptfKRLsebgeDyJtmdo7PIWDspYJaB
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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" rkziv.exe -
Executes dropped EXE 1 IoCs
pid Process 4328 rkziv.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation 6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.exe -
Adds Run key to start application 2 TTPs 53 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /J" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /p" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /S" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /Z" 6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /d" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /l" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /U" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /B" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /u" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /i" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /h" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /G" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /T" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /n" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /t" rkziv.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /q" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /e" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /Q" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /y" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /r" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /Y" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /X" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /o" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /F" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /s" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /I" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /M" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /H" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /j" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /z" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /L" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /E" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /w" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /N" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /K" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /V" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /R" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /D" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /v" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /Z" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /x" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /k" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /W" rkziv.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /a" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /A" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /m" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /b" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /C" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /c" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /g" rkziv.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rkziv = "C:\\Users\\Admin\\rkziv.exe /P" rkziv.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 3960 6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.exe 3960 6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe 4328 rkziv.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 3960 6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.exe 4328 rkziv.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3960 wrote to memory of 4328 3960 6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.exe 80 PID 3960 wrote to memory of 4328 3960 6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.exe 80 PID 3960 wrote to memory of 4328 3960 6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.exe"C:\Users\Admin\AppData\Local\Temp\6f21d52264bd0992a7613178decb214d5a135921640768815d1c567bc847ca99.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:3960 -
C:\Users\Admin\rkziv.exe"C:\Users\Admin\rkziv.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:4328
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
160KB
MD5b38f3a3da2effe51a0de21b7ec4d059e
SHA1451114481f1a5cd980cbb42107131882b0dd7c58
SHA2568da4b18b1d5876e157d84b4ea32cfacde2d969657c125b48d580d2c4a04705de
SHA512ca1d40c1ef17e8c507a34ab2d626caeefd716e65a562bc8162ece11b3dea2ccaaf03318ec65da97f10bfc886de2101b05fd90097800ae16ed2096a6f5d4cf03a
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Filesize
160KB
MD5b38f3a3da2effe51a0de21b7ec4d059e
SHA1451114481f1a5cd980cbb42107131882b0dd7c58
SHA2568da4b18b1d5876e157d84b4ea32cfacde2d969657c125b48d580d2c4a04705de
SHA512ca1d40c1ef17e8c507a34ab2d626caeefd716e65a562bc8162ece11b3dea2ccaaf03318ec65da97f10bfc886de2101b05fd90097800ae16ed2096a6f5d4cf03a