Analysis
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max time kernel
153s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
20/10/2022, 22:47
Static task
static1
Behavioral task
behavioral1
Sample
b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.exe
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Size
212KB
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MD5
449960739523f5d884fde52d9029111c
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SHA1
0457f549a40053bb54ce8b6b3bbdb2de75b9e4bc
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SHA256
b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb
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SHA512
40dff16eb685ca368c412f5293efee2ff72bbf2d49cc9a78a8ffc0ce51ae2a94eeb7d6a4d16446195eb8f5d0cbd729b4b12b4d7c4fe013d42fc3c273c69af5bf
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SSDEEP
3072:kvCh2UjpESCFd3MiaDN/bG0sCOL5pNk+ZxybSAx:0JFd3MiK/SxCOL5pi
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" b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.exe Set value (int) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" bryaef.exe -
Executes dropped EXE 1 IoCs
pid Process 3488 bryaef.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 b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.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\bryaef = "C:\\Users\\Admin\\bryaef.exe /g" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /n" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /z" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /v" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /j" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /t" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /u" bryaef.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /x" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /p" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /w" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /b" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /l" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /q" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /d" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /m" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /h" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /y" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /s" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /r" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /k" bryaef.exe Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run\ bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /f" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /c" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /o" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /p" b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /a" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /e" bryaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\bryaef = "C:\\Users\\Admin\\bryaef.exe /i" bryaef.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 1756 b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.exe 1756 b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe 3488 bryaef.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1756 b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.exe 3488 bryaef.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1756 wrote to memory of 3488 1756 b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.exe 84 PID 1756 wrote to memory of 3488 1756 b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.exe 84 PID 1756 wrote to memory of 3488 1756 b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.exe"C:\Users\Admin\AppData\Local\Temp\b7bb0e57e15031300626ea10185c88d475df5092eeef1aadce32364ab26b31cb.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:1756 -
C:\Users\Admin\bryaef.exe"C:\Users\Admin\bryaef.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:3488
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
212KB
MD5f5984f26bb296236ecfb4f2f8bd3f95b
SHA1893e222c1c99e57bc8250343a2f0a07ca87dee37
SHA256a98b45e89f1bcfb4d6748b766187fffcdba30abdb6b198aa4d5ced3ec311483e
SHA51212114092d313eb1b7e41117ebb1c53049c90ee3d59fa8a676154763a616cacfb380768382348ca3e7338a82c556f57b0ca6b046653581ad39b4214cdcf023b0c
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Filesize
212KB
MD5f5984f26bb296236ecfb4f2f8bd3f95b
SHA1893e222c1c99e57bc8250343a2f0a07ca87dee37
SHA256a98b45e89f1bcfb4d6748b766187fffcdba30abdb6b198aa4d5ced3ec311483e
SHA51212114092d313eb1b7e41117ebb1c53049c90ee3d59fa8a676154763a616cacfb380768382348ca3e7338a82c556f57b0ca6b046653581ad39b4214cdcf023b0c