Analysis
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max time kernel
172s -
max time network
182s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
11-10-2022 09:34
Static task
static1
Behavioral task
behavioral1
Sample
45887113e41e462de1693b88876d8b5b4ca313bfdba7ad3f6a33def3c6472e4f.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
45887113e41e462de1693b88876d8b5b4ca313bfdba7ad3f6a33def3c6472e4f.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
45887113e41e462de1693b88876d8b5b4ca313bfdba7ad3f6a33def3c6472e4f.exe
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Size
248KB
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MD5
470262381248382f217751e76c75e090
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SHA1
90110587e09f603d8fbd1608d9129a2cbe5559f9
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SHA256
45887113e41e462de1693b88876d8b5b4ca313bfdba7ad3f6a33def3c6472e4f
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SHA512
2cd9fc979790535680ce1aa77547d4f28d6798c761d0725dab129ef33c56ccb5c2a0101090e023e054c2bc2801a53c4d2cc1ab6a4fc8b192347f43a96aaf7886
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SSDEEP
6144:kD0qA6Y0d/RCH3erL/sLAsLPfc/UDgKJ1s4EWqZA7Q/DxoI3sDP4QtNINHKbhFJc:DqAh0d/RCHOrL/sLAsLP9+AKtF3sDwnG
Score
10/10
Malware Config
Signatures
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Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" kaaso.exe -
Executes dropped EXE 1 IoCs
pid Process 2152 kaaso.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation 45887113e41e462de1693b88876d8b5b4ca313bfdba7ad3f6a33def3c6472e4f.exe -
Adds Run key to start application 2 TTPs 53 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /x" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /b" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /T" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /p" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /u" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /U" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /Y" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /i" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /j" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /M" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /o" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /K" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /P" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /W" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /E" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /J" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /m" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /G" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /C" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /f" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /B" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /R" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /Q" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /H" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /N" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /a" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /w" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /y" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /t" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /k" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /d" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /h" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /l" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /s" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /r" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /v" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /S" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /z" kaaso.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /n" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /L" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /A" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /I" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /O" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /D" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /q" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /X" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /V" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /Z" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /F" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /c" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /e" kaaso.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kaaso = "C:\\Users\\Admin\\kaaso.exe /g" kaaso.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 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe 2152 kaaso.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2072 45887113e41e462de1693b88876d8b5b4ca313bfdba7ad3f6a33def3c6472e4f.exe 2152 kaaso.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2072 wrote to memory of 2152 2072 45887113e41e462de1693b88876d8b5b4ca313bfdba7ad3f6a33def3c6472e4f.exe 81 PID 2072 wrote to memory of 2152 2072 45887113e41e462de1693b88876d8b5b4ca313bfdba7ad3f6a33def3c6472e4f.exe 81 PID 2072 wrote to memory of 2152 2072 45887113e41e462de1693b88876d8b5b4ca313bfdba7ad3f6a33def3c6472e4f.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\45887113e41e462de1693b88876d8b5b4ca313bfdba7ad3f6a33def3c6472e4f.exe"C:\Users\Admin\AppData\Local\Temp\45887113e41e462de1693b88876d8b5b4ca313bfdba7ad3f6a33def3c6472e4f.exe"1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2072 -
C:\Users\Admin\kaaso.exe"C:\Users\Admin\kaaso.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:2152
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
248KB
MD58a1cb0d337816fb86cffde7ed44be0cb
SHA167a1eb4d883190d777ba6fbe464a5d523c832722
SHA2565efd34d91c13385aa234ab47b1f6e30ad5c20fcee271b641489b0a8d3a2518dc
SHA51270a4813cb46c7cfac596281f63ad926b68988aac381cf54b77fb03d9cb3f6e4bd3c52aa1d1854cfc215baef9f645575e2ff0729abf80b49a1e003d2764cda1aa
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Filesize
248KB
MD58a1cb0d337816fb86cffde7ed44be0cb
SHA167a1eb4d883190d777ba6fbe464a5d523c832722
SHA2565efd34d91c13385aa234ab47b1f6e30ad5c20fcee271b641489b0a8d3a2518dc
SHA51270a4813cb46c7cfac596281f63ad926b68988aac381cf54b77fb03d9cb3f6e4bd3c52aa1d1854cfc215baef9f645575e2ff0729abf80b49a1e003d2764cda1aa