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Analysis
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max time kernel
149s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
07/04/2024, 18:24
Static task
static1
Behavioral task
behavioral1
Sample
0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531.exe
Resource
win10v2004-20240226-en
General
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Target
0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531.exe
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Size
204KB
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MD5
e86b88fe421fe3aab1849e4e9017440b
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SHA1
e91c5cab5024ff41f170066752ac08cae336e20b
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SHA256
0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531
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SHA512
00149656d245a602a2d177ff822fc282c9f7fda4a41b47a993eba39db173ee97b55686f7588f82032c85ebb5c878100986a6dff2b594f2122b48af81867070a4
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SSDEEP
1536:W/+Oo8Ho1vzxHwxz5xNy3tQ9CW5EZWHakMwP9W6uXNh9h1AWa11GBPIdRONd+w6y:6Ho1uJ0tQ9nLHbB9WTk9+JgqmltL2
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-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531.exe Set value (int) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" cttos.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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation 0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531.exe -
Executes dropped EXE 1 IoCs
pid Process 2268 cttos.exe -
Adds Run key to start application 2 TTPs 27 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /n" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /w" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /y" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /h" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /x" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /j" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /c" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /g" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /s" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /d" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /p" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /l" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /k" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /t" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /e" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /v" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /r" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /q" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /f" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /o" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /b" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /a" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /u" 0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /u" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /z" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /i" cttos.exe Set value (str) \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cttos = "C:\\Users\\Admin\\cttos.exe /m" cttos.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2760 0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531.exe 2760 0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe 2268 cttos.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2760 0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531.exe 2268 cttos.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2760 wrote to memory of 2268 2760 0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531.exe 91 PID 2760 wrote to memory of 2268 2760 0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531.exe 91 PID 2760 wrote to memory of 2268 2760 0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531.exe 91
Processes
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C:\Users\Admin\AppData\Local\Temp\0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531.exe"C:\Users\Admin\AppData\Local\Temp\0920b2c58b4ddbefa2e0652a47a5644f30763cb6d94f98d02a239d88aa0f1531.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:2760 -
C:\Users\Admin\cttos.exe"C:\Users\Admin\cttos.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:2268
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
204KB
MD59b121bf85b237b5a850710fc87c4b793
SHA1fd059bd97481d7af3a693d18b0704862e7490b73
SHA256acb1def22c3bb0e181af550580bd26f416af24be4cbeee073ef30aa470de0d1f
SHA512289c2267f13e8a60eba9065e88cef0e7a3b7a25ccf15149ae72bc1b6a3242de299e3553ed47ed851c39d4a7ab8cf07cad34679412c258362d896f7ee3fd2d537