Analysis
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max time kernel
117s -
max time network
120s -
platform
windows7_x64 -
resource
win7-en-20210920 -
submitted
10-10-2021 08:28
Static task
static1
Behavioral task
behavioral1
Sample
Chaos Ransomware Builder v4.exe
Resource
win7-en-20210920
Behavioral task
behavioral2
Sample
Chaos Ransomware Builder v4.exe
Resource
win10v20210408
General
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Target
Chaos Ransomware Builder v4.exe
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Size
550KB
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MD5
8b855e56e41a6e10d28522a20c1e0341
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SHA1
17ea75272cfe3749c6727388fd444d2c970f9d01
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SHA256
f2665f89ba53abd3deb81988c0d5194992214053e77fc89b98b64a31a7504d77
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SHA512
eefab442b9c1be379e00c6a7de9d6d7d327ad8fd52d62a5744e104f6caa44f7147a8e74f340870f9c017980a3d8a5a86a05f76434539c01270c442a66b2af908
Malware Config
Extracted
C:\Users\Admin\Desktop\read_it.txt
bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9x0
Extracted
C:\Users\Admin\Downloads\DisconnectPop.txt
ryuk
Signatures
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Ryuk
Ransomware distributed via existing botnets, often Trickbot or Emotet.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 1280 bcdedit.exe 1184 bcdedit.exe -
pid Process 1788 wbadmin.exe -
Executes dropped EXE 2 IoCs
pid Process 1464 cx.exe 1348 svchost.exe -
Modifies extensions of user files 2 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\CompareJoin.raw => C:\Users\Admin\Pictures\CompareJoin.raw.pdf1 svchost.exe File renamed C:\Users\Admin\Pictures\EnterRevoke.raw => C:\Users\Admin\Pictures\EnterRevoke.raw.ldua svchost.exe -
Drops startup file 3 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops desktop.ini file(s) 33 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\Installer\{AC76BA86-7AD7-1033-7B44-A90000000001}\SC_Reader.exe Chaos Ransomware Builder v4.exe File opened for modification \??\c:\windows\installer\{ac76ba86-7ad7-1033-7b44-a90000000001}\sc_reader.exe Chaos Ransomware Builder v4.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1952 vssadmin.exe -
Modifies registry class 49 IoCs
description ioc Process Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9} Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\FFlags = "1092616257" Chaos Ransomware Builder v4.exe Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_FolderType = "{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}" Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2 Chaos Ransomware Builder v4.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff Chaos Ransomware Builder v4.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 9e0000001a00eebbfe23000010007db10d7bd29c934a973346cc89022e7c00002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020002a0000000000efbe7e47b3fbe4c93b4ba2bad3f5d3cd46f98207ba827a5b6945b5d7ec83085f08cc20002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020000000 Chaos Ransomware Builder v4.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Mode = "6" Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_Classes\Local Settings Chaos Ransomware Builder v4.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f4225481e03947bc34db131e946b44c8dd50000 Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC} Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\LogicalViewMode = "1" Chaos Ransomware Builder v4.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a0000001001000030f125b7ef471a10a5f102608c9eebac0e0000007800000030f125b7ef471a10a5f102608c9eebac040000007800000030f125b7ef471a10a5f102608c9eebac0c00000050000000 Chaos Ransomware Builder v4.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 0202 Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:PID = "0" Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg Chaos Ransomware Builder v4.exe Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByKey:FMTID = "{00000000-0000-0000-0000-000000000000}" Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewVersion = "0" Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\Mode = "4" Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\IconSize = "16" Chaos Ransomware Builder v4.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots Chaos Ransomware Builder v4.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 Chaos Ransomware Builder v4.exe Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewID = "{82BA0782-5B7A-4569-B5D7-EC83085F08CC}" Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlot = "2" Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7} Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_Classes\Local Settings rundll32.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\Sort = 000000000000000000000000000000000200000030f125b7ef471a10a5f102608c9eebac0a0000000100000030f125b7ef471a10a5f102608c9eebac0e000000ffffffff Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\FFlags = "1" Chaos Ransomware Builder v4.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\Sort = 000000000000000000000000000000000100000030f125b7ef471a10a5f102608c9eebac0a00000001000000 Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupByDirection = "1" Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 Chaos Ransomware Builder v4.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1" Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\GroupView = "0" Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1" Chaos Ransomware Builder v4.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache rundll32.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\LogicalViewMode = "2" Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\FFlags = "1092616257" Chaos Ransomware Builder v4.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\IconSize = "48" Chaos Ransomware Builder v4.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\2\ComDlg\{5C4F28B5-F869-4E84-8E60-F11DB97C5CC7}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a000000a000000030f125b7ef471a10a5f102608c9eebac0c00000050000000a66a63283d95d211b5d600c04fd918d00b0000007800000030f125b7ef471a10a5f102608c9eebac0e00000078000000 Chaos Ransomware Builder v4.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 236 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1348 svchost.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 1216 Chaos Ransomware Builder v4.exe 1216 Chaos Ransomware Builder v4.exe 1464 cx.exe 1464 cx.exe 1464 cx.exe 1348 svchost.exe 1348 svchost.exe 1348 svchost.exe 1348 svchost.exe -
Suspicious use of AdjustPrivilegeToken 49 IoCs
description pid Process Token: SeDebugPrivilege 1216 Chaos Ransomware Builder v4.exe Token: SeDebugPrivilege 1464 cx.exe Token: SeDebugPrivilege 1348 svchost.exe Token: SeBackupPrivilege 984 vssvc.exe Token: SeRestorePrivilege 984 vssvc.exe Token: SeAuditPrivilege 984 vssvc.exe Token: SeIncreaseQuotaPrivilege 548 WMIC.exe Token: SeSecurityPrivilege 548 WMIC.exe Token: SeTakeOwnershipPrivilege 548 WMIC.exe Token: SeLoadDriverPrivilege 548 WMIC.exe Token: SeSystemProfilePrivilege 548 WMIC.exe Token: SeSystemtimePrivilege 548 WMIC.exe Token: SeProfSingleProcessPrivilege 548 WMIC.exe Token: SeIncBasePriorityPrivilege 548 WMIC.exe Token: SeCreatePagefilePrivilege 548 WMIC.exe Token: SeBackupPrivilege 548 WMIC.exe Token: SeRestorePrivilege 548 WMIC.exe Token: SeShutdownPrivilege 548 WMIC.exe Token: SeDebugPrivilege 548 WMIC.exe Token: SeSystemEnvironmentPrivilege 548 WMIC.exe Token: SeRemoteShutdownPrivilege 548 WMIC.exe Token: SeUndockPrivilege 548 WMIC.exe Token: SeManageVolumePrivilege 548 WMIC.exe Token: 33 548 WMIC.exe Token: 34 548 WMIC.exe Token: 35 548 WMIC.exe Token: SeIncreaseQuotaPrivilege 548 WMIC.exe Token: SeSecurityPrivilege 548 WMIC.exe Token: SeTakeOwnershipPrivilege 548 WMIC.exe Token: SeLoadDriverPrivilege 548 WMIC.exe Token: SeSystemProfilePrivilege 548 WMIC.exe Token: SeSystemtimePrivilege 548 WMIC.exe Token: SeProfSingleProcessPrivilege 548 WMIC.exe Token: SeIncBasePriorityPrivilege 548 WMIC.exe Token: SeCreatePagefilePrivilege 548 WMIC.exe Token: SeBackupPrivilege 548 WMIC.exe Token: SeRestorePrivilege 548 WMIC.exe Token: SeShutdownPrivilege 548 WMIC.exe Token: SeDebugPrivilege 548 WMIC.exe Token: SeSystemEnvironmentPrivilege 548 WMIC.exe Token: SeRemoteShutdownPrivilege 548 WMIC.exe Token: SeUndockPrivilege 548 WMIC.exe Token: SeManageVolumePrivilege 548 WMIC.exe Token: 33 548 WMIC.exe Token: 34 548 WMIC.exe Token: 35 548 WMIC.exe Token: SeBackupPrivilege 1736 wbengine.exe Token: SeRestorePrivilege 1736 wbengine.exe Token: SeSecurityPrivilege 1736 wbengine.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1216 Chaos Ransomware Builder v4.exe 1216 Chaos Ransomware Builder v4.exe -
Suspicious use of WriteProcessMemory 36 IoCs
description pid Process procid_target PID 1216 wrote to memory of 1040 1216 Chaos Ransomware Builder v4.exe 28 PID 1216 wrote to memory of 1040 1216 Chaos Ransomware Builder v4.exe 28 PID 1216 wrote to memory of 1040 1216 Chaos Ransomware Builder v4.exe 28 PID 1040 wrote to memory of 1092 1040 csc.exe 30 PID 1040 wrote to memory of 1092 1040 csc.exe 30 PID 1040 wrote to memory of 1092 1040 csc.exe 30 PID 1464 wrote to memory of 1348 1464 cx.exe 32 PID 1464 wrote to memory of 1348 1464 cx.exe 32 PID 1464 wrote to memory of 1348 1464 cx.exe 32 PID 1348 wrote to memory of 640 1348 svchost.exe 33 PID 1348 wrote to memory of 640 1348 svchost.exe 33 PID 1348 wrote to memory of 640 1348 svchost.exe 33 PID 640 wrote to memory of 1952 640 cmd.exe 35 PID 640 wrote to memory of 1952 640 cmd.exe 35 PID 640 wrote to memory of 1952 640 cmd.exe 35 PID 640 wrote to memory of 548 640 cmd.exe 39 PID 640 wrote to memory of 548 640 cmd.exe 39 PID 640 wrote to memory of 548 640 cmd.exe 39 PID 1348 wrote to memory of 1844 1348 svchost.exe 41 PID 1348 wrote to memory of 1844 1348 svchost.exe 41 PID 1348 wrote to memory of 1844 1348 svchost.exe 41 PID 1844 wrote to memory of 1280 1844 cmd.exe 43 PID 1844 wrote to memory of 1280 1844 cmd.exe 43 PID 1844 wrote to memory of 1280 1844 cmd.exe 43 PID 1844 wrote to memory of 1184 1844 cmd.exe 44 PID 1844 wrote to memory of 1184 1844 cmd.exe 44 PID 1844 wrote to memory of 1184 1844 cmd.exe 44 PID 1348 wrote to memory of 1008 1348 svchost.exe 45 PID 1348 wrote to memory of 1008 1348 svchost.exe 45 PID 1348 wrote to memory of 1008 1348 svchost.exe 45 PID 1008 wrote to memory of 1788 1008 cmd.exe 47 PID 1008 wrote to memory of 1788 1008 cmd.exe 47 PID 1008 wrote to memory of 1788 1008 cmd.exe 47 PID 1348 wrote to memory of 236 1348 svchost.exe 51 PID 1348 wrote to memory of 236 1348 svchost.exe 51 PID 1348 wrote to memory of 236 1348 svchost.exe 51
Processes
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C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe"C:\Users\Admin\AppData\Local\Temp\Chaos Ransomware Builder v4.exe"1⤵
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1216 -
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\ssoad2ve\ssoad2ve.cmdline"2⤵
- Suspicious use of WriteProcessMemory
PID:1040 -
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES24A0.tmp" "c:\Users\Admin\Desktop\CSCD57F855310D2456A99D72D408BB28FBF.TMP"3⤵PID:1092
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C:\Users\Admin\Desktop\cx.exe"C:\Users\Admin\Desktop\cx.exe"1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1464 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Executes dropped EXE
- Modifies extensions of user files
- Drops startup file
- Drops desktop.ini file(s)
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1348 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:640 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1952
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:548
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no3⤵
- Suspicious use of WriteProcessMemory
PID:1844 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1280
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1184
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1008 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1788
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt3⤵
- Opens file in notepad (likely ransom note)
PID:236
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:984
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1736
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:808
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:616
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\Windows Media Player.lnk.07zv1⤵
- Modifies registry class
PID:1144