Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
21-04-2024 22:34
Behavioral task
behavioral1
Sample
2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe
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Size
24KB
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MD5
daf8e1d1c3778042cc92374eeba5af51
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SHA1
8b9f991cb7e290ef86eb0494c4ef7e14607240ee
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SHA256
83ebe9ac38941dfecead0c664b3517032ce8258f240f67699a6424290871cdee
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SHA512
cc744eb077f4e8b7089a0484d9a1662b509dfbedf94558a7bdded52112558f5bfd29fc32cbbd15d03a2ba360d10fc0c76762cf3fe8cf9c20006fddd0e6a1cbce
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SSDEEP
384:s3Mg/bqo2i2jQZ/rtcp3pUNqaJ2Gr91CJaPTt6oRUeU:Sqo2CZTypGUe/r9SyhaeU
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
resource yara_rule behavioral2/memory/3100-0-0x0000000000B40000-0x0000000000B4C000-memory.dmp family_chaos behavioral2/files/0x000b000000023397-6.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/3100-0-0x0000000000B40000-0x0000000000B4C000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral2/files/0x000b000000023397-6.dat INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 4432 bcdedit.exe 1228 bcdedit.exe -
pid Process 2748 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-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 3 IoCs
description 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
pid Process 3872 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
description ioc Process File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\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\AppData\Roaming\Microsoft\Windows\AccountPictures\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\Documents\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\Accessibility\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 F:\$RECYCLE.BIN\S-1-5-21-2288054676-1871194608-3559553667-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\Windows\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\AppData\Roaming\Microsoft\Windows\Recent\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\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\Start Menu\Programs\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\Internet Explorer\Quick Launch\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\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.
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 2972 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2952 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3872 svchost.exe -
Suspicious behavior: EnumeratesProcesses 47 IoCs
pid Process 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe 3872 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 3872 svchost.exe Token: SeBackupPrivilege 1188 vssvc.exe Token: SeRestorePrivilege 1188 vssvc.exe Token: SeAuditPrivilege 1188 vssvc.exe Token: SeIncreaseQuotaPrivilege 4124 WMIC.exe Token: SeSecurityPrivilege 4124 WMIC.exe Token: SeTakeOwnershipPrivilege 4124 WMIC.exe Token: SeLoadDriverPrivilege 4124 WMIC.exe Token: SeSystemProfilePrivilege 4124 WMIC.exe Token: SeSystemtimePrivilege 4124 WMIC.exe Token: SeProfSingleProcessPrivilege 4124 WMIC.exe Token: SeIncBasePriorityPrivilege 4124 WMIC.exe Token: SeCreatePagefilePrivilege 4124 WMIC.exe Token: SeBackupPrivilege 4124 WMIC.exe Token: SeRestorePrivilege 4124 WMIC.exe Token: SeShutdownPrivilege 4124 WMIC.exe Token: SeDebugPrivilege 4124 WMIC.exe Token: SeSystemEnvironmentPrivilege 4124 WMIC.exe Token: SeRemoteShutdownPrivilege 4124 WMIC.exe Token: SeUndockPrivilege 4124 WMIC.exe Token: SeManageVolumePrivilege 4124 WMIC.exe Token: 33 4124 WMIC.exe Token: 34 4124 WMIC.exe Token: 35 4124 WMIC.exe Token: 36 4124 WMIC.exe Token: SeIncreaseQuotaPrivilege 4124 WMIC.exe Token: SeSecurityPrivilege 4124 WMIC.exe Token: SeTakeOwnershipPrivilege 4124 WMIC.exe Token: SeLoadDriverPrivilege 4124 WMIC.exe Token: SeSystemProfilePrivilege 4124 WMIC.exe Token: SeSystemtimePrivilege 4124 WMIC.exe Token: SeProfSingleProcessPrivilege 4124 WMIC.exe Token: SeIncBasePriorityPrivilege 4124 WMIC.exe Token: SeCreatePagefilePrivilege 4124 WMIC.exe Token: SeBackupPrivilege 4124 WMIC.exe Token: SeRestorePrivilege 4124 WMIC.exe Token: SeShutdownPrivilege 4124 WMIC.exe Token: SeDebugPrivilege 4124 WMIC.exe Token: SeSystemEnvironmentPrivilege 4124 WMIC.exe Token: SeRemoteShutdownPrivilege 4124 WMIC.exe Token: SeUndockPrivilege 4124 WMIC.exe Token: SeManageVolumePrivilege 4124 WMIC.exe Token: 33 4124 WMIC.exe Token: 34 4124 WMIC.exe Token: 35 4124 WMIC.exe Token: 36 4124 WMIC.exe Token: SeBackupPrivilege 1128 wbengine.exe Token: SeRestorePrivilege 1128 wbengine.exe Token: SeSecurityPrivilege 1128 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 3100 wrote to memory of 3872 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 94 PID 3100 wrote to memory of 3872 3100 2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe 94 PID 3872 wrote to memory of 5016 3872 svchost.exe 100 PID 3872 wrote to memory of 5016 3872 svchost.exe 100 PID 5016 wrote to memory of 2972 5016 cmd.exe 102 PID 5016 wrote to memory of 2972 5016 cmd.exe 102 PID 5016 wrote to memory of 4124 5016 cmd.exe 106 PID 5016 wrote to memory of 4124 5016 cmd.exe 106 PID 3872 wrote to memory of 2012 3872 svchost.exe 107 PID 3872 wrote to memory of 2012 3872 svchost.exe 107 PID 2012 wrote to memory of 4432 2012 cmd.exe 109 PID 2012 wrote to memory of 4432 2012 cmd.exe 109 PID 2012 wrote to memory of 1228 2012 cmd.exe 110 PID 2012 wrote to memory of 1228 2012 cmd.exe 110 PID 3872 wrote to memory of 2280 3872 svchost.exe 111 PID 3872 wrote to memory of 2280 3872 svchost.exe 111 PID 2280 wrote to memory of 2748 2280 cmd.exe 113 PID 2280 wrote to memory of 2748 2280 cmd.exe 113 PID 3872 wrote to memory of 2952 3872 svchost.exe 117 PID 3872 wrote to memory of 2952 3872 svchost.exe 117 -
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\2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-21_daf8e1d1c3778042cc92374eeba5af51_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3100 -
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
PID:3872 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:5016 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2972
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4124
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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:2012 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:4432
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1228
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2280 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2748
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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:2952
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1188
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1128
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:4356
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:3876
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
24KB
MD5daf8e1d1c3778042cc92374eeba5af51
SHA18b9f991cb7e290ef86eb0494c4ef7e14607240ee
SHA25683ebe9ac38941dfecead0c664b3517032ce8258f240f67699a6424290871cdee
SHA512cc744eb077f4e8b7089a0484d9a1662b509dfbedf94558a7bdded52112558f5bfd29fc32cbbd15d03a2ba360d10fc0c76762cf3fe8cf9c20006fddd0e6a1cbce
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Filesize
1KB
MD50ffcc3ce1ccfa5b124220232c2441e6f
SHA1ae62c3e836542b406c94c57ffff84b7ca02ea2fb
SHA2562ccf991bf1de37d8b8bff84575075f29880d20e74a2295187bd6f0045d33292b
SHA5129d47a5c3463cb9f06b4cdb724f2f86509c5d2fce4dca509f628a0c36ee910c6c31d3fc248e805d87787e23129426863792c1a2c9a1c71285d05ee7fec1852483