Analysis
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max time kernel
152s -
max time network
51s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
30/10/2022, 18:34
Static task
static1
Behavioral task
behavioral1
Sample
bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe
Resource
win7-20220812-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe
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Size
304KB
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MD5
834ccbcfc4daf7d372b0d93b685ca590
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SHA1
16946f40adedfc3ee7f21d04a39fe3e3ec9137ab
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SHA256
bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc
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SHA512
2efc66ba8d55a70e10a1894803d1ef7d7a1331ca3fc2c741f7a971afd1b5727cdf59e1af11c4c1bd8453e7c434a196e84f6a7aa4092b21a52a153e945a3af0f5
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SSDEEP
3072:7Vf1i2Dwhe6YIRnbXtcU7qTzKqc+Mk1op2aEaDFHT+7pvPxvaBS:6xG6Xkxla8xb
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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe Set value (int) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" gsfaef.exe -
Executes dropped EXE 1 IoCs
pid Process 948 gsfaef.exe -
Loads dropped DLL 2 IoCs
pid Process 908 bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe 908 bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe -
Adds Run key to start application 2 TTPs 29 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /i" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /r" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /p" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /n" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /s" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /j" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /q" bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /q" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /y" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /u" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /k" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /d" gsfaef.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /c" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /o" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /b" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /h" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /e" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /l" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /w" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /t" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /f" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /a" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /z" gsfaef.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /x" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /m" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /g" gsfaef.exe Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\gsfaef = "C:\\Users\\Admin\\gsfaef.exe /v" gsfaef.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 908 bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe 948 gsfaef.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 908 bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe 948 gsfaef.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 908 wrote to memory of 948 908 bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe 27 PID 908 wrote to memory of 948 908 bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe 27 PID 908 wrote to memory of 948 908 bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe 27 PID 908 wrote to memory of 948 908 bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe 27
Processes
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C:\Users\Admin\AppData\Local\Temp\bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe"C:\Users\Admin\AppData\Local\Temp\bb13a64087e07a1ed466f86da178ff202ac0b889332eef62e4a50989ca1793dc.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Loads dropped DLL
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:908 -
C:\Users\Admin\gsfaef.exe"C:\Users\Admin\gsfaef.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:948
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
304KB
MD57ed8191f911a16f5d9b524ca33cbc029
SHA1781142c78ee7e8c0a6137e8655d6f18ec32865f3
SHA25644f77f441a67dc9dd4b14eaf29a9376b0d90b24f35d744f30fc788d1f0ca89d1
SHA51294c25d94de5337a8015e3438dd99a17f1d2b7eb2e8aab272725eacb1a2f4251fe36d0900e83f8c5747c51c4b52b38dc7d9a1500fcec3cdd2e63c96c39cbf0a87
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Filesize
304KB
MD57ed8191f911a16f5d9b524ca33cbc029
SHA1781142c78ee7e8c0a6137e8655d6f18ec32865f3
SHA25644f77f441a67dc9dd4b14eaf29a9376b0d90b24f35d744f30fc788d1f0ca89d1
SHA51294c25d94de5337a8015e3438dd99a17f1d2b7eb2e8aab272725eacb1a2f4251fe36d0900e83f8c5747c51c4b52b38dc7d9a1500fcec3cdd2e63c96c39cbf0a87
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Filesize
304KB
MD57ed8191f911a16f5d9b524ca33cbc029
SHA1781142c78ee7e8c0a6137e8655d6f18ec32865f3
SHA25644f77f441a67dc9dd4b14eaf29a9376b0d90b24f35d744f30fc788d1f0ca89d1
SHA51294c25d94de5337a8015e3438dd99a17f1d2b7eb2e8aab272725eacb1a2f4251fe36d0900e83f8c5747c51c4b52b38dc7d9a1500fcec3cdd2e63c96c39cbf0a87
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Filesize
304KB
MD57ed8191f911a16f5d9b524ca33cbc029
SHA1781142c78ee7e8c0a6137e8655d6f18ec32865f3
SHA25644f77f441a67dc9dd4b14eaf29a9376b0d90b24f35d744f30fc788d1f0ca89d1
SHA51294c25d94de5337a8015e3438dd99a17f1d2b7eb2e8aab272725eacb1a2f4251fe36d0900e83f8c5747c51c4b52b38dc7d9a1500fcec3cdd2e63c96c39cbf0a87