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Analysis
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max time kernel
151s -
max time network
174s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
01/12/2022, 23:55
Static task
static1
Behavioral task
behavioral1
Sample
eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.exe
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Size
168KB
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MD5
5eb5459d68813255a85afba4cd82867e
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SHA1
7b73f16e66a038972f7ed359c4eb7ba2b287cfc4
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SHA256
eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35
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SHA512
3ee61cf31222ead90754b1b68fc7dd9c8c6f37722ce0a087446cab8e88135344ec7ce7b2673b27d87c74e077df58676f67dc2b1a60cfaec9895e310446ec434d
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SSDEEP
1536:FaXJrEys7cv+c6gBtKH67bU8TkWRifJYwdtmP+7m5KFbwQL4AW3lV4ckUl0OEZC5:UBR+c6gB4ZCchor5KFjkF/5YC6XJnnqL
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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" caayag.exe -
Executes dropped EXE 1 IoCs
pid Process 4332 caayag.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 eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /t" eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /s" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /n" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /u" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /p" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /y" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /d" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /g" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /x" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /t" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /h" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /o" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /q" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /b" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /m" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /v" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /k" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /c" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /e" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /a" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /f" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /z" caayag.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /l" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /j" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /w" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /i" caayag.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\caayag = "C:\\Users\\Admin\\caayag.exe /r" caayag.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 2988 eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.exe 2988 eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe 4332 caayag.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2988 eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.exe 4332 caayag.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2988 wrote to memory of 4332 2988 eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.exe 80 PID 2988 wrote to memory of 4332 2988 eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.exe 80 PID 2988 wrote to memory of 4332 2988 eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.exe"C:\Users\Admin\AppData\Local\Temp\eb82d0850839ef5c856dd0b0a5ac2c5da81259997863ef32cbd06efa4f0b8e35.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:2988 -
C:\Users\Admin\caayag.exe"C:\Users\Admin\caayag.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:4332
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
168KB
MD51299b0c638c9107a707574c702e90271
SHA1b1054cc01c9b2c9a2c15abe76d43aec5a23dbfdc
SHA256cf1ae24432d51f726b257b762389b6f4c19550e2bb5dced6b2db053c571f5c64
SHA512e767bb36b66b81eb91f02c71b98de2734d069f50c981d1ec3b1913782d821c4c4a30144bf77213d717e5567ab020c0c1d7f75032969e4ae6bd7358371ec53db5
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Filesize
168KB
MD51299b0c638c9107a707574c702e90271
SHA1b1054cc01c9b2c9a2c15abe76d43aec5a23dbfdc
SHA256cf1ae24432d51f726b257b762389b6f4c19550e2bb5dced6b2db053c571f5c64
SHA512e767bb36b66b81eb91f02c71b98de2734d069f50c981d1ec3b1913782d821c4c4a30144bf77213d717e5567ab020c0c1d7f75032969e4ae6bd7358371ec53db5