Analysis
-
max time kernel
137s -
max time network
142s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
19-02-2024 08:59
Behavioral task
behavioral1
Sample
2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe
Resource
win10v2004-20231215-en
General
-
Target
2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe
-
Size
551KB
-
MD5
a9282aaf372aae86092f21917022850c
-
SHA1
6d06e70de7c4478da89123dde9c0ea4dfb33c6e3
-
SHA256
35196a8b628306eff560e2ec0228a51acfc7a232878b233b18de68806e9b55db
-
SHA512
865bffacbd2bc67476144470165c119674c9b3736187757bba3157cc1f0eeafd747f08b1232aabbf0e1b76afc8e6bf9bdc2f6d5fd5eae7d38540a27e33883708
-
SSDEEP
12288:dsGmPS60AOrFQANpH5WH9d7W4mBm1wRc/8BThysr8E:dsB2udYBmMbZrT
Malware Config
Extracted
C:\Users\Admin\Documents\read_it.txt
Signatures
-
Chaos
Ransomware family first seen in June 2021.
-
Chaos Ransomware 2 IoCs
resource yara_rule behavioral2/memory/2244-0-0x0000000000F40000-0x0000000000FD0000-memory.dmp family_chaos behavioral2/files/0x000600000002312d-6.dat family_chaos -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
-
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 4340 bcdedit.exe 2640 bcdedit.exe -
pid Process 3484 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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\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 2712 svchost.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Drops desktop.ini file(s) 34 IoCs
description ioc Process File opened for modification C:\Users\Admin\Desktop\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\Saved Games\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\AccountPictures\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\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3073191680-435865314-2862784915-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\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\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\Accessories\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\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\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\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\lxbecmx7y.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Checks SCSI registry key(s) 3 TTPs 4 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process 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_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\FriendlyName vds.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000 vds.exe -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 4476 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2548 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2712 svchost.exe -
Suspicious behavior: EnumeratesProcesses 52 IoCs
pid Process 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe 2712 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe Token: SeDebugPrivilege 2712 svchost.exe Token: SeBackupPrivilege 876 vssvc.exe Token: SeRestorePrivilege 876 vssvc.exe Token: SeAuditPrivilege 876 vssvc.exe Token: SeIncreaseQuotaPrivilege 4580 WMIC.exe Token: SeSecurityPrivilege 4580 WMIC.exe Token: SeTakeOwnershipPrivilege 4580 WMIC.exe Token: SeLoadDriverPrivilege 4580 WMIC.exe Token: SeSystemProfilePrivilege 4580 WMIC.exe Token: SeSystemtimePrivilege 4580 WMIC.exe Token: SeProfSingleProcessPrivilege 4580 WMIC.exe Token: SeIncBasePriorityPrivilege 4580 WMIC.exe Token: SeCreatePagefilePrivilege 4580 WMIC.exe Token: SeBackupPrivilege 4580 WMIC.exe Token: SeRestorePrivilege 4580 WMIC.exe Token: SeShutdownPrivilege 4580 WMIC.exe Token: SeDebugPrivilege 4580 WMIC.exe Token: SeSystemEnvironmentPrivilege 4580 WMIC.exe Token: SeRemoteShutdownPrivilege 4580 WMIC.exe Token: SeUndockPrivilege 4580 WMIC.exe Token: SeManageVolumePrivilege 4580 WMIC.exe Token: 33 4580 WMIC.exe Token: 34 4580 WMIC.exe Token: 35 4580 WMIC.exe Token: 36 4580 WMIC.exe Token: SeIncreaseQuotaPrivilege 4580 WMIC.exe Token: SeSecurityPrivilege 4580 WMIC.exe Token: SeTakeOwnershipPrivilege 4580 WMIC.exe Token: SeLoadDriverPrivilege 4580 WMIC.exe Token: SeSystemProfilePrivilege 4580 WMIC.exe Token: SeSystemtimePrivilege 4580 WMIC.exe Token: SeProfSingleProcessPrivilege 4580 WMIC.exe Token: SeIncBasePriorityPrivilege 4580 WMIC.exe Token: SeCreatePagefilePrivilege 4580 WMIC.exe Token: SeBackupPrivilege 4580 WMIC.exe Token: SeRestorePrivilege 4580 WMIC.exe Token: SeShutdownPrivilege 4580 WMIC.exe Token: SeDebugPrivilege 4580 WMIC.exe Token: SeSystemEnvironmentPrivilege 4580 WMIC.exe Token: SeRemoteShutdownPrivilege 4580 WMIC.exe Token: SeUndockPrivilege 4580 WMIC.exe Token: SeManageVolumePrivilege 4580 WMIC.exe Token: 33 4580 WMIC.exe Token: 34 4580 WMIC.exe Token: 35 4580 WMIC.exe Token: 36 4580 WMIC.exe Token: SeBackupPrivilege 1444 wbengine.exe Token: SeRestorePrivilege 1444 wbengine.exe Token: SeSecurityPrivilege 1444 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 2244 wrote to memory of 2712 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 83 PID 2244 wrote to memory of 2712 2244 2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe 83 PID 2712 wrote to memory of 2016 2712 svchost.exe 93 PID 2712 wrote to memory of 2016 2712 svchost.exe 93 PID 2016 wrote to memory of 4476 2016 cmd.exe 95 PID 2016 wrote to memory of 4476 2016 cmd.exe 95 PID 2016 wrote to memory of 4580 2016 cmd.exe 98 PID 2016 wrote to memory of 4580 2016 cmd.exe 98 PID 2712 wrote to memory of 4796 2712 svchost.exe 99 PID 2712 wrote to memory of 4796 2712 svchost.exe 99 PID 4796 wrote to memory of 4340 4796 cmd.exe 101 PID 4796 wrote to memory of 4340 4796 cmd.exe 101 PID 4796 wrote to memory of 2640 4796 cmd.exe 102 PID 4796 wrote to memory of 2640 4796 cmd.exe 102 PID 2712 wrote to memory of 4688 2712 svchost.exe 103 PID 2712 wrote to memory of 4688 2712 svchost.exe 103 PID 4688 wrote to memory of 3484 4688 cmd.exe 105 PID 4688 wrote to memory of 3484 4688 cmd.exe 105 PID 2712 wrote to memory of 2548 2712 svchost.exe 109 PID 2712 wrote to memory of 2548 2712 svchost.exe 109 -
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.
-
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-19_a9282aaf372aae86092f21917022850c_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2244 -
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)
- Sets desktop wallpaper using registry
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2712 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2016 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4476
-
-
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4580
-
-
-
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:4796 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:4340
-
-
C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2640
-
-
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4688 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3484
-
-
-
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:2548
-
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:876
-
C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1444
-
C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:4380
-
C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:376
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
551KB
MD5a9282aaf372aae86092f21917022850c
SHA16d06e70de7c4478da89123dde9c0ea4dfb33c6e3
SHA25635196a8b628306eff560e2ec0228a51acfc7a232878b233b18de68806e9b55db
SHA512865bffacbd2bc67476144470165c119674c9b3736187757bba3157cc1f0eeafd747f08b1232aabbf0e1b76afc8e6bf9bdc2f6d5fd5eae7d38540a27e33883708
-
Filesize
1KB
MD5caaa2593a0c8447ef2db9f9f5061c6a7
SHA1137ceffaf50853f31ec6a99ef48d670af2bb65d5
SHA2561bdb6e764c1bd29926c4a9b596fc4be4a73a37ae07ba03452c50e1c07765c6d9
SHA512fff7ee411ed0e15caa4481df922c07ef30f3723d8814ac6a1972b2b62b06e080d28c3a5459e78eb7d4584c25913c0a3113f970ce4c096cd0563a0ff6deb65557