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Analysis
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max time kernel
180s -
max time network
188s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
19/09/2022, 19:50
Behavioral task
behavioral1
Sample
12febb42b022e1508e9471b0221fa994a34c8661274c85f0296fac48a38ef693.dll
Resource
win7-20220901-en
10 signatures
150 seconds
General
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Target
12febb42b022e1508e9471b0221fa994a34c8661274c85f0296fac48a38ef693.dll
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Size
147KB
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MD5
1e2f6df9ae065c340626b7d325ff2df3
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SHA1
52e8cd53621b77db6147ecc48a78c84031ab8190
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SHA256
12febb42b022e1508e9471b0221fa994a34c8661274c85f0296fac48a38ef693
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SHA512
317de643689d868bd1d38ac5625103d45047d4a9c1e232999b04250bbb330ced0ce5e6e48091d9497634f012528614c9bab72af2fcd81639739bad6c66f65e44
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SSDEEP
3072:M/r+rb2AV5TvLGuPEJFoXHCaYwJKbVq7RsKvj2Z1HdfdG:M/SX9Tv/E3wRYwJYViRsA2ZTg
Malware Config
Signatures
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Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
description 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
description 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 -
resource yara_rule behavioral2/memory/4052-133-0x0000000010000000-0x000000001001D000-memory.dmp upx behavioral2/memory/4052-140-0x0000000010000000-0x000000001001D000-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.
description ioc Process File opened (read-only) \??\G: rundll32.exe -
description ioc Process Set value (data) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\Toolbar\ShellBrowser\ITBar7Layout = 13000000000000000000000020000000100000000000000001000000010700005e01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 explorer.exe 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 -
Modifies registry class 32 IoCs
description ioc Process 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\0\MRUListEx = ffffffff 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\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 explorer.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\WorkFolders 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\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\1 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\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 (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 = 14001f50e04fd020ea3a6910a2d808002b30309d0000 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\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\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\0 = 78003100000000000c55ec981100557365727300640009000400efbe874f77483455ed382e000000c70500000000010000000000000000003a000000000012201b0155007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000 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\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\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 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\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\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\0 = 50003100000000000c5512a0100041646d696e003c0009000400efbe0c55ec983455ed382e0000008fe10100000001000000000000000000000000000000463dbc00410064006d0069006e00000014000000 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\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\0\0\0\0 = 56003100000000000c55ec9812004170704461746100400009000400efbe0c55ec980f557b652e0000009ae1010000000100000000000000000000000000000031e600014100700070004400610074006100000016000000 explorer.exe Key created \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags explorer.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4452 explorer.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 4052 rundll32.exe 4052 rundll32.exe 4052 rundll32.exe 4052 rundll32.exe 4052 rundll32.exe 4052 rundll32.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 4452 explorer.exe 2640 Explorer.EXE -
Suspicious use of AdjustPrivilegeToken 15 IoCs
description pid Process Token: SeDebugPrivilege 4052 rundll32.exe Token: SeShutdownPrivilege 2640 Explorer.EXE Token: SeCreatePagefilePrivilege 2640 Explorer.EXE Token: SeShutdownPrivilege 2640 Explorer.EXE Token: SeCreatePagefilePrivilege 2640 Explorer.EXE Token: SeShutdownPrivilege 2640 Explorer.EXE Token: SeCreatePagefilePrivilege 2640 Explorer.EXE Token: SeShutdownPrivilege 2640 Explorer.EXE Token: SeCreatePagefilePrivilege 2640 Explorer.EXE Token: SeShutdownPrivilege 2640 Explorer.EXE Token: SeCreatePagefilePrivilege 2640 Explorer.EXE Token: SeShutdownPrivilege 2640 Explorer.EXE Token: SeCreatePagefilePrivilege 2640 Explorer.EXE Token: SeShutdownPrivilege 2640 Explorer.EXE Token: SeCreatePagefilePrivilege 2640 Explorer.EXE -
Suspicious use of FindShellTrayWindow 4 IoCs
pid Process 2640 Explorer.EXE 2640 Explorer.EXE 2640 Explorer.EXE 2640 Explorer.EXE -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 2640 Explorer.EXE -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4452 explorer.exe 4452 explorer.exe -
Suspicious use of UnmapMainImage 1 IoCs
pid Process 2640 Explorer.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 2112 wrote to memory of 4052 2112 rundll32.exe 79 PID 2112 wrote to memory of 4052 2112 rundll32.exe 79 PID 2112 wrote to memory of 4052 2112 rundll32.exe 79 PID 4052 wrote to memory of 2640 4052 rundll32.exe 40 PID 4052 wrote to memory of 4732 4052 rundll32.exe 81 PID 4052 wrote to memory of 4732 4052 rundll32.exe 81 PID 4052 wrote to memory of 4732 4052 rundll32.exe 81
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
- Suspicious use of UnmapMainImage
PID:2640 -
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\12febb42b022e1508e9471b0221fa994a34c8661274c85f0296fac48a38ef693.dll,#12⤵
- Suspicious use of WriteProcessMemory
PID:2112 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\12febb42b022e1508e9471b0221fa994a34c8661274c85f0296fac48a38ef693.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
PID:4052 -
C:\Windows\SysWOW64\explorer.exeexplorer C:\Users\Admin\AppData4⤵PID:4732
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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
PID:4452
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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⤵PID:1508