Analysis
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max time kernel
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max time network
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platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
20-04-2024 03:48
Behavioral task
behavioral1
Sample
2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe
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Size
301KB
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MD5
7b3efaefb41b7136502139438a6968e4
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SHA1
84b25e639e5e1ee0519d5731a7810e0a312f3010
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SHA256
329dc7144e9e0e49aa9b7e3d495eb2a329579ea9d68249f93c3942179ece3cf6
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SHA512
62646bdbfa3ca43327885c93f2b6821f1f3c896791a147aa0981f1be269cc19eb77050f0305d0ac3c1db8e868894523d785c8b7059d264d9fb653c4d47357777
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SSDEEP
3072:D3kcMHr9irIKH11poMiMiHuZDLJ2YR7c2ytBcL5BdkwvTkmEd:hEr9irIava+ZWwvqd
Malware Config
Extracted
C:\Users\Admin\Desktop\read_it.txt
chaos
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
resource yara_rule behavioral2/memory/2036-0-0x0000000000DE0000-0x0000000000E32000-memory.dmp family_chaos behavioral2/files/0x0004000000022fac-6.dat family_chaos -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Detects command variations typically used by ransomware 2 IoCs
resource yara_rule behavioral2/memory/2036-0-0x0000000000DE0000-0x0000000000E32000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral2/files/0x0004000000022fac-6.dat INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 4348 bcdedit.exe 804 bcdedit.exe -
pid Process 3644 wbadmin.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation C11Setup.exe Key value queried \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\C11Setup.url C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini C11Setup.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt C11Setup.exe -
Executes dropped EXE 1 IoCs
pid Process 1756 C11Setup.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) 34 IoCs
description ioc Process File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini C11Setup.exe File opened for modification C:\Users\Public\Videos\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\Music\desktop.ini C11Setup.exe File opened for modification C:\Users\Public\Documents\desktop.ini C11Setup.exe File opened for modification C:\Users\Public\Music\desktop.ini C11Setup.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-355664440-2199602304-1223909400-1000\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\Searches\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini C11Setup.exe File opened for modification C:\Users\Public\Pictures\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\Videos\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\Links\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\Documents\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini C11Setup.exe File opened for modification C:\Users\Public\Desktop\desktop.ini C11Setup.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8fmcxnex8.jpg" C11Setup.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 4 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName vds.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName vds.exe -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 3732 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000_Classes\Local Settings C11Setup.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 996 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1756 C11Setup.exe -
Suspicious behavior: EnumeratesProcesses 49 IoCs
pid Process 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe 1756 C11Setup.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe Token: SeDebugPrivilege 1756 C11Setup.exe Token: SeBackupPrivilege 2556 vssvc.exe Token: SeRestorePrivilege 2556 vssvc.exe Token: SeAuditPrivilege 2556 vssvc.exe Token: SeIncreaseQuotaPrivilege 2072 WMIC.exe Token: SeSecurityPrivilege 2072 WMIC.exe Token: SeTakeOwnershipPrivilege 2072 WMIC.exe Token: SeLoadDriverPrivilege 2072 WMIC.exe Token: SeSystemProfilePrivilege 2072 WMIC.exe Token: SeSystemtimePrivilege 2072 WMIC.exe Token: SeProfSingleProcessPrivilege 2072 WMIC.exe Token: SeIncBasePriorityPrivilege 2072 WMIC.exe Token: SeCreatePagefilePrivilege 2072 WMIC.exe Token: SeBackupPrivilege 2072 WMIC.exe Token: SeRestorePrivilege 2072 WMIC.exe Token: SeShutdownPrivilege 2072 WMIC.exe Token: SeDebugPrivilege 2072 WMIC.exe Token: SeSystemEnvironmentPrivilege 2072 WMIC.exe Token: SeRemoteShutdownPrivilege 2072 WMIC.exe Token: SeUndockPrivilege 2072 WMIC.exe Token: SeManageVolumePrivilege 2072 WMIC.exe Token: 33 2072 WMIC.exe Token: 34 2072 WMIC.exe Token: 35 2072 WMIC.exe Token: 36 2072 WMIC.exe Token: SeIncreaseQuotaPrivilege 2072 WMIC.exe Token: SeSecurityPrivilege 2072 WMIC.exe Token: SeTakeOwnershipPrivilege 2072 WMIC.exe Token: SeLoadDriverPrivilege 2072 WMIC.exe Token: SeSystemProfilePrivilege 2072 WMIC.exe Token: SeSystemtimePrivilege 2072 WMIC.exe Token: SeProfSingleProcessPrivilege 2072 WMIC.exe Token: SeIncBasePriorityPrivilege 2072 WMIC.exe Token: SeCreatePagefilePrivilege 2072 WMIC.exe Token: SeBackupPrivilege 2072 WMIC.exe Token: SeRestorePrivilege 2072 WMIC.exe Token: SeShutdownPrivilege 2072 WMIC.exe Token: SeDebugPrivilege 2072 WMIC.exe Token: SeSystemEnvironmentPrivilege 2072 WMIC.exe Token: SeRemoteShutdownPrivilege 2072 WMIC.exe Token: SeUndockPrivilege 2072 WMIC.exe Token: SeManageVolumePrivilege 2072 WMIC.exe Token: 33 2072 WMIC.exe Token: 34 2072 WMIC.exe Token: 35 2072 WMIC.exe Token: 36 2072 WMIC.exe Token: SeBackupPrivilege 1576 wbengine.exe Token: SeRestorePrivilege 1576 wbengine.exe Token: SeSecurityPrivilege 1576 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 2036 wrote to memory of 1756 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 90 PID 2036 wrote to memory of 1756 2036 2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe 90 PID 1756 wrote to memory of 212 1756 C11Setup.exe 91 PID 1756 wrote to memory of 212 1756 C11Setup.exe 91 PID 212 wrote to memory of 3732 212 cmd.exe 93 PID 212 wrote to memory of 3732 212 cmd.exe 93 PID 212 wrote to memory of 2072 212 cmd.exe 96 PID 212 wrote to memory of 2072 212 cmd.exe 96 PID 1756 wrote to memory of 2208 1756 C11Setup.exe 98 PID 1756 wrote to memory of 2208 1756 C11Setup.exe 98 PID 2208 wrote to memory of 4348 2208 cmd.exe 100 PID 2208 wrote to memory of 4348 2208 cmd.exe 100 PID 2208 wrote to memory of 804 2208 cmd.exe 101 PID 2208 wrote to memory of 804 2208 cmd.exe 101 PID 1756 wrote to memory of 4276 1756 C11Setup.exe 102 PID 1756 wrote to memory of 4276 1756 C11Setup.exe 102 PID 4276 wrote to memory of 3644 4276 cmd.exe 104 PID 4276 wrote to memory of 3644 4276 cmd.exe 104 PID 1756 wrote to memory of 996 1756 C11Setup.exe 108 PID 1756 wrote to memory of 996 1756 C11Setup.exe 108 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-20_7b3efaefb41b7136502139438a6968e4_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2036 -
C:\Users\Admin\AppData\Roaming\C11Setup.exe"C:\Users\Admin\AppData\Roaming\C11Setup.exe"2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1756 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:212 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:3732
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2072
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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:2208 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:4348
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:804
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4276 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3644
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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:996
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2556
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1576
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:3588
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:2976
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
301KB
MD57b3efaefb41b7136502139438a6968e4
SHA184b25e639e5e1ee0519d5731a7810e0a312f3010
SHA256329dc7144e9e0e49aa9b7e3d495eb2a329579ea9d68249f93c3942179ece3cf6
SHA51262646bdbfa3ca43327885c93f2b6821f1f3c896791a147aa0981f1be269cc19eb77050f0305d0ac3c1db8e868894523d785c8b7059d264d9fb653c4d47357777
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740