Analysis
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max time kernel
148s -
max time network
123s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
29-04-2024 13:26
Behavioral task
behavioral1
Sample
2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240419-en
General
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Target
2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe
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Size
22KB
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MD5
29fa75458106f03a11560ca466363129
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SHA1
89db6502c8170f260b48d80ee0ece3380ba77eb5
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SHA256
3f5ade39f3658b6da93987f7ba7dba38d7d94096638ef9f3565790e6ab73eef7
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SHA512
28a58b096f560ac4cd03b96f77f7e0cbe7e96c4fb56fb6758c3e4ff7304e3ae4e0db35570f69070c676e45143dedb7be50556bc80f38364400ea2d43bec99188
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SSDEEP
384:j3Mg/bqo2uOv0tpDnqp+Ao4+X0Z/dJZr91C8OWh0et:Vqo2BDp+J4+kRrZr9hLyet
Malware Config
Extracted
C:\Users\Admin\Documents\read_it.txt
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
Processes:
resource yara_rule behavioral2/memory/3212-0-0x0000000000390000-0x000000000039C000-memory.dmp family_chaos C:\Users\Admin\AppData\Roaming\svchost.exe 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
Processes:
resource yara_rule behavioral2/memory/3212-0-0x0000000000390000-0x000000000039C000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware C:\Users\Admin\AppData\Roaming\svchost.exe INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
Processes:
bcdedit.exebcdedit.exepid process 4544 bcdedit.exe 2532 bcdedit.exe -
Processes:
wbadmin.exepid process 2508 wbadmin.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exesvchost.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 3 IoCs
Processes:
svchost.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe 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 -
Executes dropped EXE 1 IoCs
Processes:
svchost.exepid process 4640 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) 34 IoCs
Processes:
svchost.exedescription ioc process File opened for modification C:\Users\Admin\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\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\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\Pictures\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\Windows\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2818691465-3043947619-2475182763-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\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\Admin\Contacts\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\Start Menu\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\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\Admin\Pictures\Saved Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.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.
Processes:
vds.exedescription 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.
Processes:
vssadmin.exepid process 4488 vssadmin.exe -
Modifies registry class 1 IoCs
Processes:
svchost.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-2818691465-3043947619-2475182763-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid process 3268 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
svchost.exepid process 4640 svchost.exe -
Suspicious behavior: EnumeratesProcesses 43 IoCs
Processes:
2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exesvchost.exepid process 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe 4640 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
Processes:
2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exesvchost.exevssvc.exeWMIC.exewbengine.exedescription pid process Token: SeDebugPrivilege 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 4640 svchost.exe Token: SeBackupPrivilege 2660 vssvc.exe Token: SeRestorePrivilege 2660 vssvc.exe Token: SeAuditPrivilege 2660 vssvc.exe Token: SeIncreaseQuotaPrivilege 3096 WMIC.exe Token: SeSecurityPrivilege 3096 WMIC.exe Token: SeTakeOwnershipPrivilege 3096 WMIC.exe Token: SeLoadDriverPrivilege 3096 WMIC.exe Token: SeSystemProfilePrivilege 3096 WMIC.exe Token: SeSystemtimePrivilege 3096 WMIC.exe Token: SeProfSingleProcessPrivilege 3096 WMIC.exe Token: SeIncBasePriorityPrivilege 3096 WMIC.exe Token: SeCreatePagefilePrivilege 3096 WMIC.exe Token: SeBackupPrivilege 3096 WMIC.exe Token: SeRestorePrivilege 3096 WMIC.exe Token: SeShutdownPrivilege 3096 WMIC.exe Token: SeDebugPrivilege 3096 WMIC.exe Token: SeSystemEnvironmentPrivilege 3096 WMIC.exe Token: SeRemoteShutdownPrivilege 3096 WMIC.exe Token: SeUndockPrivilege 3096 WMIC.exe Token: SeManageVolumePrivilege 3096 WMIC.exe Token: 33 3096 WMIC.exe Token: 34 3096 WMIC.exe Token: 35 3096 WMIC.exe Token: 36 3096 WMIC.exe Token: SeIncreaseQuotaPrivilege 3096 WMIC.exe Token: SeSecurityPrivilege 3096 WMIC.exe Token: SeTakeOwnershipPrivilege 3096 WMIC.exe Token: SeLoadDriverPrivilege 3096 WMIC.exe Token: SeSystemProfilePrivilege 3096 WMIC.exe Token: SeSystemtimePrivilege 3096 WMIC.exe Token: SeProfSingleProcessPrivilege 3096 WMIC.exe Token: SeIncBasePriorityPrivilege 3096 WMIC.exe Token: SeCreatePagefilePrivilege 3096 WMIC.exe Token: SeBackupPrivilege 3096 WMIC.exe Token: SeRestorePrivilege 3096 WMIC.exe Token: SeShutdownPrivilege 3096 WMIC.exe Token: SeDebugPrivilege 3096 WMIC.exe Token: SeSystemEnvironmentPrivilege 3096 WMIC.exe Token: SeRemoteShutdownPrivilege 3096 WMIC.exe Token: SeUndockPrivilege 3096 WMIC.exe Token: SeManageVolumePrivilege 3096 WMIC.exe Token: 33 3096 WMIC.exe Token: 34 3096 WMIC.exe Token: 35 3096 WMIC.exe Token: 36 3096 WMIC.exe Token: SeBackupPrivilege 4168 wbengine.exe Token: SeRestorePrivilege 4168 wbengine.exe Token: SeSecurityPrivilege 4168 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exesvchost.execmd.execmd.execmd.exedescription pid process target process PID 3212 wrote to memory of 4640 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe svchost.exe PID 3212 wrote to memory of 4640 3212 2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe svchost.exe PID 4640 wrote to memory of 4624 4640 svchost.exe cmd.exe PID 4640 wrote to memory of 4624 4640 svchost.exe cmd.exe PID 4624 wrote to memory of 4488 4624 cmd.exe vssadmin.exe PID 4624 wrote to memory of 4488 4624 cmd.exe vssadmin.exe PID 4624 wrote to memory of 3096 4624 cmd.exe WMIC.exe PID 4624 wrote to memory of 3096 4624 cmd.exe WMIC.exe PID 4640 wrote to memory of 2108 4640 svchost.exe cmd.exe PID 4640 wrote to memory of 2108 4640 svchost.exe cmd.exe PID 2108 wrote to memory of 4544 2108 cmd.exe bcdedit.exe PID 2108 wrote to memory of 4544 2108 cmd.exe bcdedit.exe PID 2108 wrote to memory of 2532 2108 cmd.exe bcdedit.exe PID 2108 wrote to memory of 2532 2108 cmd.exe bcdedit.exe PID 4640 wrote to memory of 2528 4640 svchost.exe cmd.exe PID 4640 wrote to memory of 2528 4640 svchost.exe cmd.exe PID 2528 wrote to memory of 2508 2528 cmd.exe wbadmin.exe PID 2528 wrote to memory of 2508 2528 cmd.exe wbadmin.exe PID 4640 wrote to memory of 3268 4640 svchost.exe NOTEPAD.EXE PID 4640 wrote to memory of 3268 4640 svchost.exe NOTEPAD.EXE -
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\2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-29_29fa75458106f03a11560ca466363129_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
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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
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
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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)
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\svchost.exeFilesize
22KB
MD529fa75458106f03a11560ca466363129
SHA189db6502c8170f260b48d80ee0ece3380ba77eb5
SHA2563f5ade39f3658b6da93987f7ba7dba38d7d94096638ef9f3565790e6ab73eef7
SHA51228a58b096f560ac4cd03b96f77f7e0cbe7e96c4fb56fb6758c3e4ff7304e3ae4e0db35570f69070c676e45143dedb7be50556bc80f38364400ea2d43bec99188
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C:\Users\Admin\Documents\read_it.txtFilesize
462B
MD59ef56b0438e82e07aa14fb9481d10b18
SHA1b4d069b4737d9f32d07618d83650f7c1ed3bf6eb
SHA256ae7ff3ea3c8870144b97cde602f5e84f8a365939cf127fafa38a5309f29b69d3
SHA512a7f14c7f8b01ef7c21e2350e9b9efdcbb8d533197b63d7bc50d4c75a2190a2fc5633698a532ed07a186333097dd08991852721051d255d1bf2cfc9356cdf523d
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memory/3212-0-0x0000000000390000-0x000000000039C000-memory.dmpFilesize
48KB
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memory/3212-1-0x00007FFEC2880000-0x00007FFEC3341000-memory.dmpFilesize
10.8MB
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memory/3212-2-0x00007FFEC2880000-0x00007FFEC3341000-memory.dmpFilesize
10.8MB
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memory/3212-16-0x00007FFEC2880000-0x00007FFEC3341000-memory.dmpFilesize
10.8MB
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memory/4640-15-0x00007FFEC2880000-0x00007FFEC3341000-memory.dmpFilesize
10.8MB
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memory/4640-483-0x00007FFEC2880000-0x00007FFEC3341000-memory.dmpFilesize
10.8MB