Analysis Overview
SHA256
f2665f89ba53abd3deb81988c0d5194992214053e77fc89b98b64a31a7504d77
Threat Level: Known bad
The file Chaos Ransomware Builder v4.exe was found to be: Known bad.
Malicious Activity Summary
Chaos
Chaos Ransomware
Chaos family
Modifies boot configuration data using bcdedit
Deletes shadow copies
Deletes backup catalog
Executes dropped EXE
Reads user/profile data of web browsers
Drops startup file
Drops desktop.ini file(s)
Drops file in Windows directory
Enumerates physical storage devices
Unsigned PE
Uses Task Scheduler COM API
Suspicious use of FindShellTrayWindow
Uses Volume Shadow Copy service COM API
Suspicious use of AdjustPrivilegeToken
Opens file in notepad (likely ransom note)
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious behavior: AddClipboardFormatListener
Suspicious use of WriteProcessMemory
Interacts with shadow copies
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-09-22 14:36
Signatures
Chaos Ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Chaos family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-09-22 14:36
Reported
2024-09-22 14:39
Platform
win7-20240708-en
Max time kernel
160s
Max time network
118s
Command Line
Signatures
Chaos
Chaos Ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Deletes shadow copies
Modifies boot configuration data using bcdedit
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\bcdedit.exe | N/A |
| N/A | N/A | C:\Windows\system32\bcdedit.exe | N/A |
Deletes backup catalog
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\wbadmin.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hello.txt | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\Desktop\test.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Reads user/profile data of web browsers
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Saved Games\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Videos\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Links\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Desktop\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Music\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Music\Sample Music\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Videos\Sample Videos\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Contacts\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Music\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Searches\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Favorites\Links\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Favorites\Links for United States\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Documents\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Pictures\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | F:\$RECYCLE.BIN\S-1-5-21-3551809350-4263495960-1443967649-1000\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Documents\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Downloads\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Desktop\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Pictures\Sample Pictures\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Favorites\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Videos\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\Installer\{AC76BA86-7AD7-1033-7B44-A90000000001}\SC_Reader.exe | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| File opened for modification | \??\c:\windows\installer\{ac76ba86-7ad7-1033-7b44-a90000000001}\sc_reader.exe | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
Enumerates physical storage devices
Interacts with shadow copies
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\vssadmin.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC} | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9} | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\Sort = 000000000000000000000000000000000200000030f125b7ef471a10a5f102608c9eebac0a0000000100000030f125b7ef471a10a5f102608c9eebac0e000000ffffffff | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlot = "2" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:FMTID = "{00000000-0000-0000-0000-000000000000}" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\FFlags = "1092616257" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2 | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\LogicalViewMode = "2" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupView = "0" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\LogicalViewMode = "1" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7} | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1092616257" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a000000a000000030f125b7ef471a10a5f102608c9eebac0c00000050000000a66a63283d95d211b5d600c04fd918d00b0000007800000030f125b7ef471a10a5f102608c9eebac0e00000078000000 | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Sort = 000000000000000000000000000000000100000030f125b7ef471a10a5f102608c9eebac0a00000001000000 | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\FFlags = "1" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Mode = "6" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:PID = "0" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewVersion = "0" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\Mode = "4" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\IconSize = "16" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\IconSize = "48" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f4225481e03947bc34db131e946b44c8dd50000 | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 9e0000001a00eebbfe23000010007db10d7bd29c934a973346cc89022e7c00002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020002a0000000000efbe7e47b3fbe4c93b4ba2bad3f5d3cd46f98207ba827a5b6945b5d7ec83085f08cc20002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020000000 | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewID = "{82BA0782-5B7A-4569-B5D7-EC83085F08CC}" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByDirection = "1" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_FolderType = "{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}" | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a0000001001000030f125b7ef471a10a5f102608c9eebac0e0000007800000030f125b7ef471a10a5f102608c9eebac040000007800000030f125b7ef471a10a5f102608c9eebac0c00000050000000 | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 0202 | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
Opens file in notepad (likely ransom note)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\NOTEPAD.EXE | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| N/A | N/A | C:\Users\Admin\Desktop\test.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\Desktop\test.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeAuditPrivilege | N/A | C:\Windows\system32\vssvc.exe | N/A |
| Token: SeIncreaseQuotaPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeSystemProfilePrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeSystemtimePrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeProfSingleProcessPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeSystemEnvironmentPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeRemoteShutdownPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeUndockPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeManageVolumePrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: 33 | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: 34 | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: 35 | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeIncreaseQuotaPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeTakeOwnershipPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeLoadDriverPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeSystemProfilePrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeSystemtimePrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeProfSingleProcessPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeSystemEnvironmentPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeRemoteShutdownPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeUndockPrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeManageVolumePrivilege | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: 33 | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: 34 | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: 35 | N/A | C:\Windows\System32\Wbem\WMIC.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\system32\wbengine.exe | N/A |
| Token: SeRestorePrivilege | N/A | C:\Windows\system32\wbengine.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Windows\system32\wbengine.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\NOTEPAD.EXE | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe
"C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe"
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\jnrqzcjm\jnrqzcjm.cmdline"
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESF086.tmp" "c:\Users\Admin\Desktop\CSCDC028D2A667C4E0386553541485EDFE.TMP"
C:\Users\Admin\Desktop\test.exe
"C:\Users\Admin\Desktop\test.exe"
C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete
C:\Windows\system32\vssadmin.exe
vssadmin delete shadows /all /quiet
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\System32\Wbem\WMIC.exe
wmic shadowcopy delete
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\system32\bcdedit.exe
bcdedit /set {default} recoveryenabled no
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet
C:\Windows\system32\wbadmin.exe
wbadmin delete catalog -quiet
C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\hello.txt
Network
Files
memory/2280-0-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp
memory/2280-1-0x0000000000900000-0x000000000098E000-memory.dmp
memory/2280-2-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp
memory/2280-3-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp
memory/2280-4-0x000007FEF5DC3000-0x000007FEF5DC4000-memory.dmp
memory/2280-5-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp
memory/2280-10-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp
memory/2280-11-0x000000001EEF0000-0x000000001EF00000-memory.dmp
\??\c:\Users\Admin\AppData\Local\Temp\jnrqzcjm\jnrqzcjm.cmdline
| MD5 | d3583a2aea28fd1901d23dad4ab07f9b |
| SHA1 | 92d6091f2b9754395b129195329f96a168e34f39 |
| SHA256 | ce56297c5e7bb60793d2360e5d5d34b015cb9c9c2e489273be51858ebff05ac6 |
| SHA512 | b3c3b687b1044021b799e705f791b82939f6e8d11836dba31327d1df9f0b2a9a6b2b5b4f05d8da7c6d92a5ff70cfdc151bd5fe617e7226828701c9635a0d228e |
\??\c:\Users\Admin\AppData\Local\Temp\jnrqzcjm\jnrqzcjm.0.cs
| MD5 | 1031b477cdd87d8ec30efd863e19a5d6 |
| SHA1 | 12ac09f8f501e55e61d6f671956a2d2e410a8622 |
| SHA256 | 7d744e20cf65869365ea0cdc8ea82bbd912ac2b3cbeb8eb07a93cfb5f1bdf152 |
| SHA512 | 9ce8d9c1885efedfb1f6b264ba5ce4c1a467b8d160e28fe4347d83c2197784a7fec0686eae3ccef6a56ef754a363c67ca4e649529f0d52feca73ad60af31a012 |
C:\Users\Admin\AppData\Local\Temp\RESF086.tmp
| MD5 | f198bc9c6906249b0027ce210380c7c2 |
| SHA1 | 31bf5012a3141f0f4f13ef0de4344ef3be13f995 |
| SHA256 | 1dd570182559f8be16318145ebf1d383f27eee96363b0d40974b0f0e5f3f4ff9 |
| SHA512 | 6737a80b1c5912d3d1956f615dc8277e28a62ca9b7b6d9bee63faa035893efe49990296e6ce71004137342b5a42b965f8c8581083627e3560bc4943a76a03cbe |
\??\c:\Users\Admin\Desktop\CSCDC028D2A667C4E0386553541485EDFE.TMP
| MD5 | 4a8b69d1b2c8695736b8c2273da513dc |
| SHA1 | 6519bfd357318ebc69831e8c9a12626c5a34dc2e |
| SHA256 | d9edfacf147f183b116c4ba680fe1087d13f04fa7dc92ca7e9bc9f2fdbca24b6 |
| SHA512 | e4bf306c4ff1b6be85fa7824ba7e9c50906e965553fcbcb9debd966220b0328134d99ceedc6d563296332056c243dd310e8fe36e2fee2c3864f7aa67fde225e5 |
memory/2280-24-0x000007FEF5DC0000-0x000007FEF67AC000-memory.dmp
C:\Users\Admin\Desktop\test.exe
| MD5 | 8f0f0910e64f1f2e6fd93ec1a760b854 |
| SHA1 | 5a3a6819be71cab04163ed3a43bc84d956f12c94 |
| SHA256 | c5f04730672b056e0eee1d4445d1f9cd9c5f3b8289c18733249b60d32cd7be42 |
| SHA512 | 01e0df8aace082cd4984e0994914848450198299a7b8ea0b1624ea8a1f7dc306c7cb28ca9c37831dc5e211864f4f483274f804cb7e2b25d6c920f43c0d7f0331 |
memory/1096-27-0x00000000012C0000-0x00000000012CC000-memory.dmp
memory/1892-33-0x0000000000860000-0x000000000086C000-memory.dmp
C:\Users\Admin\Documents\hello.txt
| MD5 | 73b319e034e418e31493d6c1c45906ec |
| SHA1 | a370dab258fac340b868b3bb300cbb53dd27bc3e |
| SHA256 | 2b89cc861b41b46d42b8594af12968d9b937e893f8f3ab73a5b4e6cb847fe42b |
| SHA512 | 1d04b7b570dcfb6fdac6d08ef9763bc8983844e3fe0c9234810f0308f93b4ccd577b9a2c294987540f835222d9d5eb4ade56b26a003418dac50f4faff1bb8b84 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-09-22 14:36
Reported
2024-09-22 14:39
Platform
win10v2004-20240910-en
Max time kernel
149s
Max time network
151s
Command Line
Signatures
Chaos
Chaos Ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe
"C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 58.99.105.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 10.28.171.150.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 85.65.42.20.in-addr.arpa | udp |
Files
memory/3336-0-0x00007FFE59D73000-0x00007FFE59D75000-memory.dmp
memory/3336-1-0x00000000008B0000-0x000000000093E000-memory.dmp
memory/3336-2-0x00007FFE59D70000-0x00007FFE5A831000-memory.dmp
memory/3336-3-0x00007FFE59D70000-0x00007FFE5A831000-memory.dmp
memory/3336-4-0x00007FFE59D73000-0x00007FFE59D75000-memory.dmp
memory/3336-5-0x00007FFE59D70000-0x00007FFE5A831000-memory.dmp