Analysis
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max time kernel
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max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
27-01-2025 14:48
Behavioral task
behavioral1
Sample
2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe
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Size
23KB
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MD5
bc3d4290593b05f6f71bcb548f8135ca
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SHA1
1bf43b610b5e570e4245f17f6caf0d0fac1183d6
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SHA256
20161610789ed879efb3351c02b62cf33f13107dfeba7fb7b0ffbf205f427dea
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SHA512
20e336bde4e1ab46476e152de0767749488e675be1841c6918be10d45bf2a1eb7e09678e42b35c22f262e5d394637ade5a0475a0ba546e838af298fe8f755a44
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SSDEEP
384:/3Mg/bqo2mcxtivpgDKF+98cJCr91C5yUxb58ed:Zqo2ptMpgDKN0Cr9JUxbied
Malware Config
Extracted
C:\Users\Admin\Documents\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/1576-1-0x00000000001C0000-0x00000000001CC000-memory.dmp family_chaos behavioral2/files/0x0008000000023c7c-6.dat family_chaos -
Chaos family
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Deletes shadow copies 3 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 2304 bcdedit.exe 3156 bcdedit.exe -
pid Process 3880 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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\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 3592 svchost.exe -
Reads user/profile data of web browsers 3 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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\Documents\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\Videos\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\Accessibility\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\Favorites\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\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-1045960512-3948844814-3059691613-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\OneDrive\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\Programs\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\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\SendTo\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\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\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 Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName vds.exe -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1836 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1620 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3592 svchost.exe -
Suspicious behavior: EnumeratesProcesses 51 IoCs
pid Process 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe 3592 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 3592 svchost.exe Token: SeBackupPrivilege 1932 vssvc.exe Token: SeRestorePrivilege 1932 vssvc.exe Token: SeAuditPrivilege 1932 vssvc.exe Token: SeIncreaseQuotaPrivilege 440 WMIC.exe Token: SeSecurityPrivilege 440 WMIC.exe Token: SeTakeOwnershipPrivilege 440 WMIC.exe Token: SeLoadDriverPrivilege 440 WMIC.exe Token: SeSystemProfilePrivilege 440 WMIC.exe Token: SeSystemtimePrivilege 440 WMIC.exe Token: SeProfSingleProcessPrivilege 440 WMIC.exe Token: SeIncBasePriorityPrivilege 440 WMIC.exe Token: SeCreatePagefilePrivilege 440 WMIC.exe Token: SeBackupPrivilege 440 WMIC.exe Token: SeRestorePrivilege 440 WMIC.exe Token: SeShutdownPrivilege 440 WMIC.exe Token: SeDebugPrivilege 440 WMIC.exe Token: SeSystemEnvironmentPrivilege 440 WMIC.exe Token: SeRemoteShutdownPrivilege 440 WMIC.exe Token: SeUndockPrivilege 440 WMIC.exe Token: SeManageVolumePrivilege 440 WMIC.exe Token: 33 440 WMIC.exe Token: 34 440 WMIC.exe Token: 35 440 WMIC.exe Token: 36 440 WMIC.exe Token: SeIncreaseQuotaPrivilege 440 WMIC.exe Token: SeSecurityPrivilege 440 WMIC.exe Token: SeTakeOwnershipPrivilege 440 WMIC.exe Token: SeLoadDriverPrivilege 440 WMIC.exe Token: SeSystemProfilePrivilege 440 WMIC.exe Token: SeSystemtimePrivilege 440 WMIC.exe Token: SeProfSingleProcessPrivilege 440 WMIC.exe Token: SeIncBasePriorityPrivilege 440 WMIC.exe Token: SeCreatePagefilePrivilege 440 WMIC.exe Token: SeBackupPrivilege 440 WMIC.exe Token: SeRestorePrivilege 440 WMIC.exe Token: SeShutdownPrivilege 440 WMIC.exe Token: SeDebugPrivilege 440 WMIC.exe Token: SeSystemEnvironmentPrivilege 440 WMIC.exe Token: SeRemoteShutdownPrivilege 440 WMIC.exe Token: SeUndockPrivilege 440 WMIC.exe Token: SeManageVolumePrivilege 440 WMIC.exe Token: 33 440 WMIC.exe Token: 34 440 WMIC.exe Token: 35 440 WMIC.exe Token: 36 440 WMIC.exe Token: SeBackupPrivilege 3924 wbengine.exe Token: SeRestorePrivilege 3924 wbengine.exe Token: SeSecurityPrivilege 3924 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 1576 wrote to memory of 3592 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 84 PID 1576 wrote to memory of 3592 1576 2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe 84 PID 3592 wrote to memory of 708 3592 svchost.exe 87 PID 3592 wrote to memory of 708 3592 svchost.exe 87 PID 708 wrote to memory of 1836 708 cmd.exe 89 PID 708 wrote to memory of 1836 708 cmd.exe 89 PID 708 wrote to memory of 440 708 cmd.exe 93 PID 708 wrote to memory of 440 708 cmd.exe 93 PID 3592 wrote to memory of 4760 3592 svchost.exe 96 PID 3592 wrote to memory of 4760 3592 svchost.exe 96 PID 4760 wrote to memory of 2304 4760 cmd.exe 98 PID 4760 wrote to memory of 2304 4760 cmd.exe 98 PID 4760 wrote to memory of 3156 4760 cmd.exe 99 PID 4760 wrote to memory of 3156 4760 cmd.exe 99 PID 3592 wrote to memory of 4168 3592 svchost.exe 100 PID 3592 wrote to memory of 4168 3592 svchost.exe 100 PID 4168 wrote to memory of 3880 4168 cmd.exe 102 PID 4168 wrote to memory of 3880 4168 cmd.exe 102 PID 3592 wrote to memory of 1620 3592 svchost.exe 107 PID 3592 wrote to memory of 1620 3592 svchost.exe 107 -
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\2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-01-27_bc3d4290593b05f6f71bcb548f8135ca_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1576 -
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:3592 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:708 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1836
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:440
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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:4760 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2304
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:3156
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4168 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3880
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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:1620
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1932
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3924
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:4916
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:4964
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
23KB
MD5bc3d4290593b05f6f71bcb548f8135ca
SHA11bf43b610b5e570e4245f17f6caf0d0fac1183d6
SHA25620161610789ed879efb3351c02b62cf33f13107dfeba7fb7b0ffbf205f427dea
SHA51220e336bde4e1ab46476e152de0767749488e675be1841c6918be10d45bf2a1eb7e09678e42b35c22f262e5d394637ade5a0475a0ba546e838af298fe8f755a44
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740