Analysis
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max time kernel
93s -
max time network
98s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
18/09/2024, 18:22
Behavioral task
behavioral1
Sample
2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe
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Size
25KB
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MD5
2136851bb03a3f5b5dfeb64558e2074a
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SHA1
992bb4b51f2ef49508dff162bf75a53450dde994
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SHA256
a3c442d58a5b6f05a7faf34b88b8c1ea2aeab52f76cd22ebbb4bc611fbac99ae
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SHA512
85cbf62b565bd3a0a624ddcc1c48f93d5cce8c59a54658ec28a5323ee269b1db9bdf49968c32728ebac54179c3cc8617310acb7dde439f0907589aae699c5356
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SSDEEP
384:o3Mg/bqo2shyDpqyJOjPJDRr91CKnZKurAy3Yrek:Wqo2KipVOjhNr9PZKurEek
Malware Config
Extracted
C:\Users\Admin\Documents\DECRYPTION INFORMATION.txt
https://www.coinmama.com
https://www.bitpanda.com
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/4764-1-0x00000000005D0000-0x00000000005DC000-memory.dmp family_chaos behavioral2/files/0x0008000000023436-6.dat family_chaos -
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 2992 bcdedit.exe 5028 bcdedit.exe -
Renames multiple (196) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 1576 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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\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\DECRYPTION INFORMATION.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 4460 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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\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\Saved Games\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\Pictures\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\Recent\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\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\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\Internet Explorer\Quick Launch\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\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\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\OneDrive\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\Desktop\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-656926755-4116854191-210765258-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\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_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 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 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 4052 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000_Classes\Local Settings svchost.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4460 svchost.exe -
Suspicious behavior: EnumeratesProcesses 49 IoCs
pid Process 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 4460 svchost.exe Token: SeBackupPrivilege 1496 vssvc.exe Token: SeRestorePrivilege 1496 vssvc.exe Token: SeAuditPrivilege 1496 vssvc.exe Token: SeIncreaseQuotaPrivilege 1356 WMIC.exe Token: SeSecurityPrivilege 1356 WMIC.exe Token: SeTakeOwnershipPrivilege 1356 WMIC.exe Token: SeLoadDriverPrivilege 1356 WMIC.exe Token: SeSystemProfilePrivilege 1356 WMIC.exe Token: SeSystemtimePrivilege 1356 WMIC.exe Token: SeProfSingleProcessPrivilege 1356 WMIC.exe Token: SeIncBasePriorityPrivilege 1356 WMIC.exe Token: SeCreatePagefilePrivilege 1356 WMIC.exe Token: SeBackupPrivilege 1356 WMIC.exe Token: SeRestorePrivilege 1356 WMIC.exe Token: SeShutdownPrivilege 1356 WMIC.exe Token: SeDebugPrivilege 1356 WMIC.exe Token: SeSystemEnvironmentPrivilege 1356 WMIC.exe Token: SeRemoteShutdownPrivilege 1356 WMIC.exe Token: SeUndockPrivilege 1356 WMIC.exe Token: SeManageVolumePrivilege 1356 WMIC.exe Token: 33 1356 WMIC.exe Token: 34 1356 WMIC.exe Token: 35 1356 WMIC.exe Token: 36 1356 WMIC.exe Token: SeIncreaseQuotaPrivilege 1356 WMIC.exe Token: SeSecurityPrivilege 1356 WMIC.exe Token: SeTakeOwnershipPrivilege 1356 WMIC.exe Token: SeLoadDriverPrivilege 1356 WMIC.exe Token: SeSystemProfilePrivilege 1356 WMIC.exe Token: SeSystemtimePrivilege 1356 WMIC.exe Token: SeProfSingleProcessPrivilege 1356 WMIC.exe Token: SeIncBasePriorityPrivilege 1356 WMIC.exe Token: SeCreatePagefilePrivilege 1356 WMIC.exe Token: SeBackupPrivilege 1356 WMIC.exe Token: SeRestorePrivilege 1356 WMIC.exe Token: SeShutdownPrivilege 1356 WMIC.exe Token: SeDebugPrivilege 1356 WMIC.exe Token: SeSystemEnvironmentPrivilege 1356 WMIC.exe Token: SeRemoteShutdownPrivilege 1356 WMIC.exe Token: SeUndockPrivilege 1356 WMIC.exe Token: SeManageVolumePrivilege 1356 WMIC.exe Token: 33 1356 WMIC.exe Token: 34 1356 WMIC.exe Token: 35 1356 WMIC.exe Token: 36 1356 WMIC.exe Token: SeBackupPrivilege 2492 wbengine.exe Token: SeRestorePrivilege 2492 wbengine.exe Token: SeSecurityPrivilege 2492 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4764 wrote to memory of 4460 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 82 PID 4764 wrote to memory of 4460 4764 2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe 82 PID 4460 wrote to memory of 1352 4460 svchost.exe 84 PID 4460 wrote to memory of 1352 4460 svchost.exe 84 PID 1352 wrote to memory of 4052 1352 cmd.exe 86 PID 1352 wrote to memory of 4052 1352 cmd.exe 86 PID 1352 wrote to memory of 1356 1352 cmd.exe 89 PID 1352 wrote to memory of 1356 1352 cmd.exe 89 PID 4460 wrote to memory of 2680 4460 svchost.exe 91 PID 4460 wrote to memory of 2680 4460 svchost.exe 91 PID 2680 wrote to memory of 2992 2680 cmd.exe 93 PID 2680 wrote to memory of 2992 2680 cmd.exe 93 PID 2680 wrote to memory of 5028 2680 cmd.exe 94 PID 2680 wrote to memory of 5028 2680 cmd.exe 94 PID 4460 wrote to memory of 4564 4460 svchost.exe 95 PID 4460 wrote to memory of 4564 4460 svchost.exe 95 PID 4564 wrote to memory of 1576 4564 cmd.exe 97 PID 4564 wrote to memory of 1576 4564 cmd.exe 97 PID 4460 wrote to memory of 916 4460 svchost.exe 101 PID 4460 wrote to memory of 916 4460 svchost.exe 101 -
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\2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-18_2136851bb03a3f5b5dfeb64558e2074a_chaos_destroyer_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4764 -
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:4460 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1352 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4052
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1356
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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:2680 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2992
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:5028
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4564 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1576
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\DECRYPTION INFORMATION.txt3⤵PID:916
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1496
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2492
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2412
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:1340
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
25KB
MD52136851bb03a3f5b5dfeb64558e2074a
SHA1992bb4b51f2ef49508dff162bf75a53450dde994
SHA256a3c442d58a5b6f05a7faf34b88b8c1ea2aeab52f76cd22ebbb4bc611fbac99ae
SHA51285cbf62b565bd3a0a624ddcc1c48f93d5cce8c59a54658ec28a5323ee269b1db9bdf49968c32728ebac54179c3cc8617310acb7dde439f0907589aae699c5356
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Filesize
1KB
MD574514450303945d01027fc42364029dd
SHA1625933e2e6d685ebd31f08dd8e6219e4dc2d8dc8
SHA256166a930b29979241f105c78b2f786a710f208599bb304a16acca3de570be26c6
SHA5126c5b1215bad6919306f16cbf26263292fcba0786db9121a64edcaf8f5c6d1e657f463e2fdfc2ee0c7abd9088aab03fa03f26ac9823ad7d1cd2c7dc56000b2535