Analysis
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max time kernel
1990s -
max time network
2663s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
30-03-2023 03:11
Static task
static1
Behavioral task
behavioral1
Sample
7m3ojg.exe
Resource
win10v2004-20230220-en
General
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Target
7m3ojg.exe
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Size
7.0MB
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MD5
43601d823d4b197b053f345f6ca85b95
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SHA1
00f7fde0d94bf22bab10c51b433949ab49103e36
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SHA256
83abf60f7eb7656fa3671ad754fced48d6e8f732f44faaf805343e3dbdab5393
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SHA512
97f066fc6a5169df23ebd69270b9e0a4c019d119c410f8f26c770d73b77f61558dee271a3177ce97b557a759945d7723790848e603757843c144cd1bee6a1c4b
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SSDEEP
98304:HcQ61EoYNQgkTWUsvsWZ03MAGSyj1rxkcS8:Hx6GjZvvqMaC1F
Malware Config
Signatures
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Modifies registry class 33 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ Notepad.exe Key created \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ Notepad.exe Set value (int) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByDirection = "1" Notepad.exe Set value (data) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Sort = 000000000000000000000000000000000100000030f125b7ef471a10a5f102608c9eebac0a00000001000000 Notepad.exe Key created \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings Notepad.exe Key created \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell Notepad.exe Key created \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell Notepad.exe Set value (int) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\LogicalViewMode = "1" Notepad.exe Set value (int) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1092616257" Notepad.exe Key created \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg Notepad.exe Set value (int) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Mode = "4" Notepad.exe Set value (str) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:FMTID = "{00000000-0000-0000-0000-000000000000}" Notepad.exe Key created \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Notepad.exe Set value (data) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff Notepad.exe Key created \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Notepad.exe Key created \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Notepad.exe Set value (data) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff Notepad.exe Set value (int) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:PID = "0" Notepad.exe Set value (data) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f50e04fd020ea3a6910a2d808002b30309d0000 Notepad.exe Set value (int) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\IconSize = "16" Notepad.exe Set value (data) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Notepad.exe Set value (data) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 14002e803accbfb42cdb4c42b0297fe99a87c6410000 Notepad.exe Set value (data) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff Notepad.exe Key created \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 Notepad.exe Set value (str) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\Shell\SniffedFolderType = "Generic" Notepad.exe Set value (data) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a0000001001000030f125b7ef471a10a5f102608c9eebac0e0000009000000030f125b7ef471a10a5f102608c9eebac040000007800000030f125b7ef471a10a5f102608c9eebac0c00000050000000 Notepad.exe Set value (int) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupView = "0" Notepad.exe Set value (int) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1" Notepad.exe Set value (data) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots Notepad.exe Set value (data) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Notepad.exe Set value (int) \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1" Notepad.exe Key created \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags Notepad.exe Key created \REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000_Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7} Notepad.exe -
Opens file in notepad (likely ransom note) 2 IoCs
pid Process 1316 Notepad.exe 3136 Notepad.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1316 Notepad.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\7m3ojg.exe"C:\Users\Admin\AppData\Local\Temp\7m3ojg.exe"1⤵PID:4488
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\Desktop\SkipOut.js"1⤵PID:2548
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C:\Windows\System32\Notepad.exe"C:\Windows\System32\Notepad.exe" C:\Users\Admin\Desktop\SkipOut.js1⤵
- Modifies registry class
- Opens file in notepad (likely ransom note)
- Suspicious use of SetWindowsHookEx
PID:1316
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc1⤵PID:1264
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C:\Windows\System32\Notepad.exe"C:\Windows\System32\Notepad.exe" C:\Users\Admin\Desktop\SkipOututf8.js1⤵
- Opens file in notepad (likely ransom note)
PID:3136
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
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Filesize
501KB
MD5c165215d96d60baff2115bb1c32f0938
SHA11d3d8e86758081994d31dac841b6ce9c01cca9c0
SHA2567510fb40e368b5e222894a42c77f8f70f2f7206b105d539cb62e0053e21e9971
SHA512fd8c99384973c9254fb432e07b24977a5529e5152fd4989d0f55d812ba267ca8300c57aabc9c2a96dd1da1f6d2123fa44c8ed91d6c54a388676564229d073b13