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Analysis
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max time kernel
151s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
29/10/2022, 16:04
Static task
static1
Behavioral task
behavioral1
Sample
ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe
Resource
win10v2004-20220901-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe
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Size
212KB
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MD5
a36c0124ac08bf78287a4c88ed88c6d0
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SHA1
070ea214ed792e40b93787216396e029df34b6b9
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SHA256
ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2
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SHA512
9ae060910d09edf5ffa824160802a402ec2d051515e82747cb553d6d5120d20c264c6aee1eba8180ecfb5908847ec9015db3b4148976ee387c2aeafa0413e8a5
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SSDEEP
3072:DALW27jpF/nCd3MiaDN/bG0sCO4FpNkNZran/SA1:sDCd3MiK/SxCO4FpbR
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-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe Set value (int) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" kiuwu.exe -
Executes dropped EXE 1 IoCs
pid Process 2296 kiuwu.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /g" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /f" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /k" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /d" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /c" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /h" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /m" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /w" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /b" ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /a" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /r" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /n" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /t" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /p" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /y" kiuwu.exe Key created \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run\ ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /e" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /i" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /j" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /x" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /s" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /v" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /l" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /z" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /b" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /u" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /q" kiuwu.exe Set value (str) \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kiuwu = "C:\\Users\\Admin\\kiuwu.exe /o" kiuwu.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 1796 ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe 1796 ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe 2296 kiuwu.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1796 ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe 2296 kiuwu.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1796 wrote to memory of 2296 1796 ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe 86 PID 1796 wrote to memory of 2296 1796 ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe 86 PID 1796 wrote to memory of 2296 1796 ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.exe"C:\Users\Admin\AppData\Local\Temp\ca4cf2eb21af4addede0cb8eccf12a6727fd521f2f23a5647a943449df84cbc2.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:1796 -
C:\Users\Admin\kiuwu.exe"C:\Users\Admin\kiuwu.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:2296
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
212KB
MD5da19d8b7c343c9b4ef6cd273ad4db3a2
SHA13189966a198417c7d03a211e26cee2942e8bcdcf
SHA25692ced8cdd71ca7892712bba0b650769e42593071743f75578aaa2964ed60523b
SHA512a177f8243ff6ca6ee698f92018f9b14178f9f1c855a09a2f50113e46bbc86d52a22fb4b9157aafcaac7cf4c4925eb40bc2f6e50d8a68d3632365a5c0691cbb0b
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Filesize
212KB
MD5da19d8b7c343c9b4ef6cd273ad4db3a2
SHA13189966a198417c7d03a211e26cee2942e8bcdcf
SHA25692ced8cdd71ca7892712bba0b650769e42593071743f75578aaa2964ed60523b
SHA512a177f8243ff6ca6ee698f92018f9b14178f9f1c855a09a2f50113e46bbc86d52a22fb4b9157aafcaac7cf4c4925eb40bc2f6e50d8a68d3632365a5c0691cbb0b