Analysis
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max time kernel
166s -
max time network
196s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
02/10/2022, 07:53
Static task
static1
Behavioral task
behavioral1
Sample
7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe
Resource
win7-20220901-en
windows7-x64
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
11 signatures
150 seconds
General
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Target
7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe
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Size
148KB
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MD5
791005e5f8f8430f9aa354b22d8019f0
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SHA1
b918b26b4ce8a87b759415360d316faa37bdfb07
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SHA256
7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4
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SHA512
99d807553a65b11d34d103598e3880879d79de8c770c47fc24ea92b1575ed1b93fe0485574df097a5aa275e664365236ccdd37bd2198362b5d149ece882ca780
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SSDEEP
3072:V0la/3l0jlwpyOj5XTW3gspAlTfXhV57Ino2f/QA1N7/vZ4:qa/3Wjlk1kelLB7DcVU
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" 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" llweef.exe -
Executes dropped EXE 2 IoCs
pid Process 1784 llweef.exe 920 llweef.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 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe -
Adds Run key to start application 2 TTPs 28 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /g" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /t" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /s" llweef.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /e" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /d" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /z" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /u" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /i" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /y" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /o" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /k" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /a" llweef.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows\CurrentVersion\Run\ 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /j" 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /n" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /m" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /r" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /f" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /x" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /j" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /p" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /v" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /h" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /q" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /b" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /c" llweef.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\llweef = "C:\\Users\\Admin\\llweef.exe /w" llweef.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 value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 llweef.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum llweef.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 llweef.exe -
Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4756 set thread context of 4432 4756 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 81 PID 1784 set thread context of 920 1784 llweef.exe 83 -
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 4432 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 4432 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe 920 llweef.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 4756 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 4432 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 1784 llweef.exe 920 llweef.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 4756 wrote to memory of 4432 4756 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 81 PID 4756 wrote to memory of 4432 4756 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 81 PID 4756 wrote to memory of 4432 4756 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 81 PID 4756 wrote to memory of 4432 4756 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 81 PID 4756 wrote to memory of 4432 4756 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 81 PID 4756 wrote to memory of 4432 4756 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 81 PID 4756 wrote to memory of 4432 4756 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 81 PID 4756 wrote to memory of 4432 4756 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 81 PID 4756 wrote to memory of 4432 4756 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 81 PID 4432 wrote to memory of 1784 4432 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 82 PID 4432 wrote to memory of 1784 4432 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 82 PID 4432 wrote to memory of 1784 4432 7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe 82 PID 1784 wrote to memory of 920 1784 llweef.exe 83 PID 1784 wrote to memory of 920 1784 llweef.exe 83 PID 1784 wrote to memory of 920 1784 llweef.exe 83 PID 1784 wrote to memory of 920 1784 llweef.exe 83 PID 1784 wrote to memory of 920 1784 llweef.exe 83 PID 1784 wrote to memory of 920 1784 llweef.exe 83 PID 1784 wrote to memory of 920 1784 llweef.exe 83 PID 1784 wrote to memory of 920 1784 llweef.exe 83 PID 1784 wrote to memory of 920 1784 llweef.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe"C:\Users\Admin\AppData\Local\Temp\7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4756 -
C:\Users\Admin\AppData\Local\Temp\7bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4.exe712⤵
- 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:4432 -
C:\Users\Admin\llweef.exe"C:\Users\Admin\llweef.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1784 -
C:\Users\Admin\llweef.exe714⤵
- 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:920
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
148KB
MD5791005e5f8f8430f9aa354b22d8019f0
SHA1b918b26b4ce8a87b759415360d316faa37bdfb07
SHA2567bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4
SHA51299d807553a65b11d34d103598e3880879d79de8c770c47fc24ea92b1575ed1b93fe0485574df097a5aa275e664365236ccdd37bd2198362b5d149ece882ca780
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Filesize
148KB
MD5791005e5f8f8430f9aa354b22d8019f0
SHA1b918b26b4ce8a87b759415360d316faa37bdfb07
SHA2567bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4
SHA51299d807553a65b11d34d103598e3880879d79de8c770c47fc24ea92b1575ed1b93fe0485574df097a5aa275e664365236ccdd37bd2198362b5d149ece882ca780
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Filesize
148KB
MD5791005e5f8f8430f9aa354b22d8019f0
SHA1b918b26b4ce8a87b759415360d316faa37bdfb07
SHA2567bf0235c5f11c17e9c28808818f6a5b83b476235dbaa221f02c930bad825ece4
SHA51299d807553a65b11d34d103598e3880879d79de8c770c47fc24ea92b1575ed1b93fe0485574df097a5aa275e664365236ccdd37bd2198362b5d149ece882ca780