Analysis
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max time kernel
166s -
max time network
178s -
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 20:38
Static task
static1
Behavioral task
behavioral1
Sample
16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe
Resource
win7-20220812-en
windows7-x64
10 signatures
150 seconds
Behavioral task
behavioral2
Sample
16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
10 signatures
150 seconds
General
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Target
16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe
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Size
262KB
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MD5
7a4a132477b6404266d3ee2e39699ec0
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SHA1
c7fe57d8670934336a813acc1d743e6a58d08893
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SHA256
16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de
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SHA512
579854d3bbdae6e1ef35f07d6c3756d3ca0b45f1b9c1fa0e8a2d62e2e7adf3b7a55a7fda00bf26c582d5c8547940bfe32d763e3efbb5eae792cf595964c1e74e
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SSDEEP
6144:59uUhxhJ1VpcVmcOClV7cN1kyymJuc4El3M:59nJ7iIAZV
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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" yeofe.exe -
Executes dropped EXE 1 IoCs
pid Process 964 yeofe.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe -
Adds Run key to start application 2 TTPs 12 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeofe = "C:\\Users\\Admin\\yeofe.exe /e" 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ yeofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeofe = "C:\\Users\\Admin\\yeofe.exe /u" yeofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeofe = "C:\\Users\\Admin\\yeofe.exe /g" yeofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeofe = "C:\\Users\\Admin\\yeofe.exe /b" yeofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeofe = "C:\\Users\\Admin\\yeofe.exe /s" yeofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeofe = "C:\\Users\\Admin\\yeofe.exe /d" yeofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeofe = "C:\\Users\\Admin\\yeofe.exe /o" yeofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeofe = "C:\\Users\\Admin\\yeofe.exe /i" yeofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeofe = "C:\\Users\\Admin\\yeofe.exe /k" yeofe.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yeofe = "C:\\Users\\Admin\\yeofe.exe /x" yeofe.exe -
Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum yeofe.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 yeofe.exe -
Drops autorun.inf file 1 TTPs 1 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
description ioc Process File opened for modification C:\Users\Admin\c\autorun.inf yeofe.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 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe 964 yeofe.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 964 yeofe.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1540 wrote to memory of 964 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 83 PID 1540 wrote to memory of 964 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 83 PID 1540 wrote to memory of 964 1540 16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe"C:\Users\Admin\AppData\Local\Temp\16ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de.exe"1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1540 -
C:\Users\Admin\yeofe.exe"C:\Users\Admin\yeofe.exe"2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Maps connected drives based on registry
- Drops autorun.inf file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:964
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
262KB
MD57a4a132477b6404266d3ee2e39699ec0
SHA1c7fe57d8670934336a813acc1d743e6a58d08893
SHA25616ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de
SHA512579854d3bbdae6e1ef35f07d6c3756d3ca0b45f1b9c1fa0e8a2d62e2e7adf3b7a55a7fda00bf26c582d5c8547940bfe32d763e3efbb5eae792cf595964c1e74e
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Filesize
262KB
MD57a4a132477b6404266d3ee2e39699ec0
SHA1c7fe57d8670934336a813acc1d743e6a58d08893
SHA25616ae36fe832187699dba155c62277678b578b209428745f28a8323555511a5de
SHA512579854d3bbdae6e1ef35f07d6c3756d3ca0b45f1b9c1fa0e8a2d62e2e7adf3b7a55a7fda00bf26c582d5c8547940bfe32d763e3efbb5eae792cf595964c1e74e