Analysis
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max time kernel
147s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
03/12/2022, 09:35
Static task
static1
Behavioral task
behavioral1
Sample
38686dcf159c513583c76a5274ab9c985967181fbdcd65fdf2816afcb0ee687b.dll
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
38686dcf159c513583c76a5274ab9c985967181fbdcd65fdf2816afcb0ee687b.dll
Resource
win10v2004-20220812-en
General
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Target
38686dcf159c513583c76a5274ab9c985967181fbdcd65fdf2816afcb0ee687b.dll
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Size
115KB
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MD5
fc4c838d7305898063059b655a5f75f0
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SHA1
d3bf533f1c08f5e17b565e05985980da8c4428b2
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SHA256
38686dcf159c513583c76a5274ab9c985967181fbdcd65fdf2816afcb0ee687b
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SHA512
9d012bdbfa0651377faab2d95bfaf945b475d1e5861485cf74d0bdea23706c31cb239f5973d45bcc602df5af7f51b5093b935beec674fb574963d4981f16c089
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SSDEEP
3072:eR/WHnnWJSS04uPtgrW4zGU0Oy49BEsPI3u:ec2JS4Qq6kGSyuEQL
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 -
Enumerates connected drives 3 TTPs 2 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\H: rundll32.exe File opened (read-only) \??\Y: rundll32.exe -
description 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
description ioc Process 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 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\0\0\0\MRUListEx = 00000000ffffffff 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\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 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 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 = 78003100000000000c55ec981100557365727300640009000400efbe874f7748865583512e000000c70500000000010000000000000000003a000000000012201b0155007300650072007300000040007300680065006c006c00330032002e0064006c006c002c002d0032003100380031003300000014000000 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 = 50003100000000000c55f7a0100041646d696e003c0009000400efbe0c55ec98865583512e0000008fe10100000001000000000000000000000000000000bc1f7200410064006d0069006e00000014000000 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 = 56003100000000000c55ec9812004170704461746100400009000400efbe0c55ec980f550a642e0000009ae1010000000100000000000000000000000000000031e600014100700070004400610074006100000016000000 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 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\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\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\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\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\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\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 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 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\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\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 = 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\MRUListEx = 00000000ffffffff 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\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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4800 explorer.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 3064 rundll32.exe 3064 rundll32.exe 3064 rundll32.exe 3064 rundll32.exe 3064 rundll32.exe 3064 rundll32.exe -
Suspicious behavior: GetForegroundWindowSpam 2 IoCs
pid Process 4800 explorer.exe 512 Explorer.EXE -
Suspicious use of AdjustPrivilegeToken 11 IoCs
description pid Process Token: SeDebugPrivilege 3064 rundll32.exe Token: SeShutdownPrivilege 512 Explorer.EXE Token: SeCreatePagefilePrivilege 512 Explorer.EXE Token: SeShutdownPrivilege 512 Explorer.EXE Token: SeCreatePagefilePrivilege 512 Explorer.EXE Token: SeShutdownPrivilege 512 Explorer.EXE Token: SeCreatePagefilePrivilege 512 Explorer.EXE Token: SeShutdownPrivilege 512 Explorer.EXE Token: SeCreatePagefilePrivilege 512 Explorer.EXE Token: SeShutdownPrivilege 512 Explorer.EXE Token: SeCreatePagefilePrivilege 512 Explorer.EXE -
Suspicious use of FindShellTrayWindow 4 IoCs
pid Process 512 Explorer.EXE 512 Explorer.EXE 512 Explorer.EXE 512 Explorer.EXE -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 512 Explorer.EXE -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 4800 explorer.exe 4800 explorer.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 3448 wrote to memory of 3064 3448 rundll32.exe 81 PID 3448 wrote to memory of 3064 3448 rundll32.exe 81 PID 3448 wrote to memory of 3064 3448 rundll32.exe 81 PID 3064 wrote to memory of 512 3064 rundll32.exe 36 PID 3064 wrote to memory of 4708 3064 rundll32.exe 82 PID 3064 wrote to memory of 4708 3064 rundll32.exe 82 PID 3064 wrote to memory of 4708 3064 rundll32.exe 82
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\38686dcf159c513583c76a5274ab9c985967181fbdcd65fdf2816afcb0ee687b.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:3448 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\38686dcf159c513583c76a5274ab9c985967181fbdcd65fdf2816afcb0ee687b.dll,#12⤵
- 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:3064 -
C:\Windows\SysWOW64\explorer.exeexplorer C:\Users\Admin\AppData3⤵PID:4708
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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
PID:512
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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:4800
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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:812