Analysis
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max time kernel
147s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
23-11-2022 21:30
Behavioral task
behavioral1
Sample
ea5cc474874b163f98bc9b04a5bb7b6aeb2b5bfbdb58189ab305ff4b76e44afb.dll
Resource
win7-20221111-en
General
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Target
ea5cc474874b163f98bc9b04a5bb7b6aeb2b5bfbdb58189ab305ff4b76e44afb.dll
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Size
134KB
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MD5
25be0557ff7085c2696024c14dc703a2
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SHA1
71af85d6e0a8dc897697b3f713139a984fa9503a
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SHA256
ea5cc474874b163f98bc9b04a5bb7b6aeb2b5bfbdb58189ab305ff4b76e44afb
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SHA512
44f179e9d4a8759fde0ca13e9922c8841e794ec66506fe0e6e8cc34cf97c304efc8c2032cb3fd39a0a1b9c75bd2fa72c54a04885d7d5dacc7c16dc73a7675934
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SSDEEP
3072:WxWdc5+VuZdcEKFNsM//wq3BG1LIulzGbMtebi8wHz:WvEuZdk0Mn7mUuBuMT
Malware Config
Signatures
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Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
Processes:
rundll32.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "0" rundll32.exe -
Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
Processes:
rundll32.exedescription ioc process Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0" rundll32.exe -
Processes:
resource yara_rule behavioral2/memory/4416-133-0x0000000010000000-0x000000001001C000-memory.dmp upx behavioral2/memory/4416-140-0x0000000010000000-0x000000001001C000-memory.dmp upx -
Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
rundll32.exedescription ioc process File opened (read-only) \??\M: rundll32.exe -
Processes:
explorer.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Internet Explorer\Toolbar explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\Locked = "1" explorer.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 explorer.exe -
Modifies registry class 32 IoCs
Processes:
explorer.exeExplorer.EXEdescription ioc process Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 = 78003100000000000c55ec981100557365727300640009000400efbe874f77487855ea0b2e000000c70500000000010000000000000000003a000000000012201b0155007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 = 50003100000000000c55cfa1100041646d696e003c0009000400efbe0c55ec987855ea0b2e0000008fe10100000001000000000000000000000000000000146b7c00410064006d0069006e00000014000000 explorer.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell explorer.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ explorer.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Explorer.EXE Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff explorer.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\MRUListEx = 00000000ffffffff explorer.exe Set value (int) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\NodeSlot = "1" explorer.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Explorer.EXE Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell explorer.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 explorer.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = 00000000ffffffff explorer.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0\MRUListEx = ffffffff explorer.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\MRUListEx = 00000000ffffffff explorer.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\0\0\0 = 56003100000000000c55ec9812004170704461746100400009000400efbe0c55ec980f553d672e0000009ae1010000000100000000000000000000000000000031e600014100700070004400610074006100000016000000 explorer.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 explorer.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders Explorer.EXE Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 19002f433a5c000000000000000000000000000000000000000000 explorer.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ explorer.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
explorer.exepid process 3948 explorer.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
rundll32.exepid process 4416 rundll32.exe 4416 rundll32.exe 4416 rundll32.exe 4416 rundll32.exe 4416 rundll32.exe 4416 rundll32.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
Processes:
explorer.exeExplorer.EXEpid process 3948 explorer.exe 676 Explorer.EXE -
Suspicious use of AdjustPrivilegeToken 11 IoCs
Processes:
rundll32.exeExplorer.EXEdescription pid process Token: SeDebugPrivilege 4416 rundll32.exe Token: SeShutdownPrivilege 676 Explorer.EXE Token: SeCreatePagefilePrivilege 676 Explorer.EXE Token: SeShutdownPrivilege 676 Explorer.EXE Token: SeCreatePagefilePrivilege 676 Explorer.EXE Token: SeShutdownPrivilege 676 Explorer.EXE Token: SeCreatePagefilePrivilege 676 Explorer.EXE Token: SeShutdownPrivilege 676 Explorer.EXE Token: SeCreatePagefilePrivilege 676 Explorer.EXE Token: SeShutdownPrivilege 676 Explorer.EXE Token: SeCreatePagefilePrivilege 676 Explorer.EXE -
Suspicious use of FindShellTrayWindow 4 IoCs
Processes:
Explorer.EXEpid process 676 Explorer.EXE 676 Explorer.EXE 676 Explorer.EXE 676 Explorer.EXE -
Suspicious use of SendNotifyMessage 1 IoCs
Processes:
Explorer.EXEpid process 676 Explorer.EXE -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
explorer.exepid process 3948 explorer.exe 3948 explorer.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 4212 wrote to memory of 4416 4212 rundll32.exe rundll32.exe PID 4212 wrote to memory of 4416 4212 rundll32.exe rundll32.exe PID 4212 wrote to memory of 4416 4212 rundll32.exe rundll32.exe PID 4416 wrote to memory of 676 4416 rundll32.exe Explorer.EXE PID 4416 wrote to memory of 5024 4416 rundll32.exe explorer.exe PID 4416 wrote to memory of 5024 4416 rundll32.exe explorer.exe PID 4416 wrote to memory of 5024 4416 rundll32.exe explorer.exe
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\ea5cc474874b163f98bc9b04a5bb7b6aeb2b5bfbdb58189ab305ff4b76e44afb.dll,#12⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\ea5cc474874b163f98bc9b04a5bb7b6aeb2b5bfbdb58189ab305ff4b76e44afb.dll,#13⤵
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\explorer.exeexplorer C:\Users\Admin\AppData4⤵
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C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
- Modifies Internet Explorer settings
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/4416-132-0x0000000000000000-mapping.dmp
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memory/4416-133-0x0000000010000000-0x000000001001C000-memory.dmpFilesize
112KB
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memory/4416-137-0x00000000007A0000-0x00000000007C1000-memory.dmpFilesize
132KB
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memory/4416-140-0x0000000010000000-0x000000001001C000-memory.dmpFilesize
112KB
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memory/4416-141-0x00000000007A0000-0x00000000007C1000-memory.dmpFilesize
132KB
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memory/5024-139-0x0000000000000000-mapping.dmp