Analysis
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max time kernel
93s -
max time network
134s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
22-11-2024 02:07
Behavioral task
behavioral1
Sample
2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe
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Size
644KB
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MD5
b898f3c309d4e2a25076c6a0fac476e8
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SHA1
51bfd7cd070ea897ad4d12d2e068511eeb226372
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SHA256
c01d10403bbb88f5106051ff41c0969bea0a589c75f1774ee2e42a76708c1ba3
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SHA512
dcaab5312d7183651e834aeb7e5f7c20a999f24379d44c35305c74e8e9e53611f11d0ca4f59b91277501510398c80b49aacb252454e9a074a02d0ae59f836681
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SSDEEP
12288:U0SZy1zq9E8aaKIgYLpanJhT5CKaL8jVVCy+9pLvh5dSsRiId7X+l4qrB9Brk3y3:HWEBqjJ5tqlR
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/3652-1-0x0000000000690000-0x0000000000736000-memory.dmp family_chaos behavioral2/files/0x000a000000023b93-6.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 612 bcdedit.exe 4652 bcdedit.exe -
pid Process 5108 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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\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\read_it.txt svchost.exe 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 -
Executes dropped EXE 1 IoCs
pid Process 5052 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\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\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\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 F:\$RECYCLE.BIN\S-1-5-21-940901362-3608833189-1915618603-1000\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\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\Public\Music\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\Public\Pictures\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\Start Menu\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\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\Saved Games\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\AccountPictures\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\SendTo\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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\Videos\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8uno9tpz1.jpg" 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 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 Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_QEMU&PROD_QEMU_DVD-ROM\4&215468A5&0&010000 vds.exe -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1696 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 3396 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 5052 svchost.exe -
Suspicious behavior: EnumeratesProcesses 49 IoCs
pid Process 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe 5052 svchost.exe -
Suspicious use of AdjustPrivilegeToken 47 IoCs
description pid Process Token: SeDebugPrivilege 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe Token: SeDebugPrivilege 5052 svchost.exe Token: SeIncreaseQuotaPrivilege 4436 WMIC.exe Token: SeSecurityPrivilege 4436 WMIC.exe Token: SeTakeOwnershipPrivilege 4436 WMIC.exe Token: SeLoadDriverPrivilege 4436 WMIC.exe Token: SeSystemProfilePrivilege 4436 WMIC.exe Token: SeSystemtimePrivilege 4436 WMIC.exe Token: SeProfSingleProcessPrivilege 4436 WMIC.exe Token: SeIncBasePriorityPrivilege 4436 WMIC.exe Token: SeCreatePagefilePrivilege 4436 WMIC.exe Token: SeBackupPrivilege 4436 WMIC.exe Token: SeRestorePrivilege 4436 WMIC.exe Token: SeShutdownPrivilege 4436 WMIC.exe Token: SeDebugPrivilege 4436 WMIC.exe Token: SeSystemEnvironmentPrivilege 4436 WMIC.exe Token: SeRemoteShutdownPrivilege 4436 WMIC.exe Token: SeUndockPrivilege 4436 WMIC.exe Token: SeManageVolumePrivilege 4436 WMIC.exe Token: 33 4436 WMIC.exe Token: 34 4436 WMIC.exe Token: 35 4436 WMIC.exe Token: 36 4436 WMIC.exe Token: SeIncreaseQuotaPrivilege 4436 WMIC.exe Token: SeSecurityPrivilege 4436 WMIC.exe Token: SeTakeOwnershipPrivilege 4436 WMIC.exe Token: SeLoadDriverPrivilege 4436 WMIC.exe Token: SeSystemProfilePrivilege 4436 WMIC.exe Token: SeSystemtimePrivilege 4436 WMIC.exe Token: SeProfSingleProcessPrivilege 4436 WMIC.exe Token: SeIncBasePriorityPrivilege 4436 WMIC.exe Token: SeCreatePagefilePrivilege 4436 WMIC.exe Token: SeBackupPrivilege 4436 WMIC.exe Token: SeRestorePrivilege 4436 WMIC.exe Token: SeShutdownPrivilege 4436 WMIC.exe Token: SeDebugPrivilege 4436 WMIC.exe Token: SeSystemEnvironmentPrivilege 4436 WMIC.exe Token: SeRemoteShutdownPrivilege 4436 WMIC.exe Token: SeUndockPrivilege 4436 WMIC.exe Token: SeManageVolumePrivilege 4436 WMIC.exe Token: 33 4436 WMIC.exe Token: 34 4436 WMIC.exe Token: 35 4436 WMIC.exe Token: 36 4436 WMIC.exe Token: SeBackupPrivilege 4664 wbengine.exe Token: SeRestorePrivilege 4664 wbengine.exe Token: SeSecurityPrivilege 4664 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 3652 wrote to memory of 5052 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 93 PID 3652 wrote to memory of 5052 3652 2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe 93 PID 5052 wrote to memory of 4980 5052 svchost.exe 98 PID 5052 wrote to memory of 4980 5052 svchost.exe 98 PID 4980 wrote to memory of 1696 4980 cmd.exe 100 PID 4980 wrote to memory of 1696 4980 cmd.exe 100 PID 4980 wrote to memory of 4436 4980 cmd.exe 104 PID 4980 wrote to memory of 4436 4980 cmd.exe 104 PID 5052 wrote to memory of 4188 5052 svchost.exe 105 PID 5052 wrote to memory of 4188 5052 svchost.exe 105 PID 4188 wrote to memory of 612 4188 cmd.exe 107 PID 4188 wrote to memory of 612 4188 cmd.exe 107 PID 4188 wrote to memory of 4652 4188 cmd.exe 108 PID 4188 wrote to memory of 4652 4188 cmd.exe 108 PID 5052 wrote to memory of 464 5052 svchost.exe 109 PID 5052 wrote to memory of 464 5052 svchost.exe 109 PID 464 wrote to memory of 5108 464 cmd.exe 111 PID 464 wrote to memory of 5108 464 cmd.exe 111 PID 5052 wrote to memory of 3396 5052 svchost.exe 116 PID 5052 wrote to memory of 3396 5052 svchost.exe 116 -
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\2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-22_b898f3c309d4e2a25076c6a0fac476e8_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3652 -
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:5052 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:4980 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1696
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4436
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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:4188 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:612
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:4652
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:464 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:5108
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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:3396
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵PID:3772
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4664
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:3900
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:1568
Network
MITRE ATT&CK Enterprise v15
Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
644KB
MD5b898f3c309d4e2a25076c6a0fac476e8
SHA151bfd7cd070ea897ad4d12d2e068511eeb226372
SHA256c01d10403bbb88f5106051ff41c0969bea0a589c75f1774ee2e42a76708c1ba3
SHA512dcaab5312d7183651e834aeb7e5f7c20a999f24379d44c35305c74e8e9e53611f11d0ca4f59b91277501510398c80b49aacb252454e9a074a02d0ae59f836681
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Filesize
1006B
MD5b7b332bf7b22a4e24f58e52d9516f07d
SHA11feb5fc581cdcc602efd11bb27e270db1d74a739
SHA2563d52695838d8dfac2d1e65ff876efd8e9d11dcbab07630eaf1a8313548d885b2
SHA512d1581b29654b625c4887d4d9a6eb733354870f2da77e7abbdcb77c6caed4ba1cb64f3c873a9034769181aa4f5d07606231b20d829c28df4f282dd280cd71ce4d