Analysis
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max time kernel
117s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
26-04-2024 07:37
Behavioral task
behavioral1
Sample
2024-04-26_755b4533d952b9d433c15de01eba7016_wannacry.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-26_755b4533d952b9d433c15de01eba7016_wannacry.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-26_755b4533d952b9d433c15de01eba7016_wannacry.exe
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Size
286KB
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MD5
755b4533d952b9d433c15de01eba7016
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SHA1
3826d33e4ba7a13355d2d5f38525a168e88eeffa
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SHA256
57838f27fb1a0d7b5ce3cc319f29d07b23eaf1378ff6c67144bc0e3b2a1eb1c9
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SHA512
6381e224581623fd21daeedd8ebfe5e7658aace94ad55f66f91ec80041da57731b9910eb4df3f513ed75b90b08923272e01af906ba1050d7ffaac6052131dd9c
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SSDEEP
3072:VNIc91yUSG0jZ6Km+q9aYZBDn/wxCotkzHzvnOlo+lDLcRkchuJItSNVdWank:Ec9ExjUlauIhoa4jpt
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\read_it.txt
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 3 IoCs
Processes:
resource yara_rule behavioral1/memory/2948-0-0x0000000000AB0000-0x0000000000AFE000-memory.dmp family_chaos C:\Users\Admin\AppData\Roaming\svchost.exe family_chaos behavioral1/memory/2872-7-0x0000000000F30000-0x0000000000F7E000-memory.dmp 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 3 IoCs
Processes:
resource yara_rule behavioral1/memory/2948-0-0x0000000000AB0000-0x0000000000AFE000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware C:\Users\Admin\AppData\Roaming\svchost.exe INDICATOR_SUSPICIOUS_GENRansomware behavioral1/memory/2872-7-0x0000000000F30000-0x0000000000F7E000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
Processes:
bcdedit.exebcdedit.exepid process 1580 bcdedit.exe 1536 bcdedit.exe -
Processes:
wbadmin.exepid process 2412 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 3 IoCs
Processes:
svchost.exedescription 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
Processes:
svchost.exepid process 2872 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) 64 IoCs
Processes:
svchost.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\3J2LRC5A\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\LGZQH3SP\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\F9UL0C6O\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\J3XTYXPF\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\Downloads\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\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\JYWEBS5E\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\CYTS71XD\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\All Users\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\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\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\All Users\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\Videos\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\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\108YEMNS\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\Desktop\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\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Ringtones\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3452737119-3959686427-228443150-1000\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\PY5FLSJ8\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\j32vcwrk2.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exepid process 2656 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid process 2928 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
svchost.exepid process 2872 svchost.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
2024-04-26_755b4533d952b9d433c15de01eba7016_wannacry.exesvchost.exepid process 2948 2024-04-26_755b4533d952b9d433c15de01eba7016_wannacry.exe 2948 2024-04-26_755b4533d952b9d433c15de01eba7016_wannacry.exe 2872 svchost.exe 2872 svchost.exe 2872 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
Processes:
2024-04-26_755b4533d952b9d433c15de01eba7016_wannacry.exesvchost.exevssvc.exeWMIC.exewbengine.exedescription pid process Token: SeDebugPrivilege 2948 2024-04-26_755b4533d952b9d433c15de01eba7016_wannacry.exe Token: SeDebugPrivilege 2872 svchost.exe Token: SeBackupPrivilege 2556 vssvc.exe Token: SeRestorePrivilege 2556 vssvc.exe Token: SeAuditPrivilege 2556 vssvc.exe Token: SeIncreaseQuotaPrivilege 2548 WMIC.exe Token: SeSecurityPrivilege 2548 WMIC.exe Token: SeTakeOwnershipPrivilege 2548 WMIC.exe Token: SeLoadDriverPrivilege 2548 WMIC.exe Token: SeSystemProfilePrivilege 2548 WMIC.exe Token: SeSystemtimePrivilege 2548 WMIC.exe Token: SeProfSingleProcessPrivilege 2548 WMIC.exe Token: SeIncBasePriorityPrivilege 2548 WMIC.exe Token: SeCreatePagefilePrivilege 2548 WMIC.exe Token: SeBackupPrivilege 2548 WMIC.exe Token: SeRestorePrivilege 2548 WMIC.exe Token: SeShutdownPrivilege 2548 WMIC.exe Token: SeDebugPrivilege 2548 WMIC.exe Token: SeSystemEnvironmentPrivilege 2548 WMIC.exe Token: SeRemoteShutdownPrivilege 2548 WMIC.exe Token: SeUndockPrivilege 2548 WMIC.exe Token: SeManageVolumePrivilege 2548 WMIC.exe Token: 33 2548 WMIC.exe Token: 34 2548 WMIC.exe Token: 35 2548 WMIC.exe Token: SeIncreaseQuotaPrivilege 2548 WMIC.exe Token: SeSecurityPrivilege 2548 WMIC.exe Token: SeTakeOwnershipPrivilege 2548 WMIC.exe Token: SeLoadDriverPrivilege 2548 WMIC.exe Token: SeSystemProfilePrivilege 2548 WMIC.exe Token: SeSystemtimePrivilege 2548 WMIC.exe Token: SeProfSingleProcessPrivilege 2548 WMIC.exe Token: SeIncBasePriorityPrivilege 2548 WMIC.exe Token: SeCreatePagefilePrivilege 2548 WMIC.exe Token: SeBackupPrivilege 2548 WMIC.exe Token: SeRestorePrivilege 2548 WMIC.exe Token: SeShutdownPrivilege 2548 WMIC.exe Token: SeDebugPrivilege 2548 WMIC.exe Token: SeSystemEnvironmentPrivilege 2548 WMIC.exe Token: SeRemoteShutdownPrivilege 2548 WMIC.exe Token: SeUndockPrivilege 2548 WMIC.exe Token: SeManageVolumePrivilege 2548 WMIC.exe Token: 33 2548 WMIC.exe Token: 34 2548 WMIC.exe Token: 35 2548 WMIC.exe Token: SeBackupPrivilege 1804 wbengine.exe Token: SeRestorePrivilege 1804 wbengine.exe Token: SeSecurityPrivilege 1804 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
Processes:
2024-04-26_755b4533d952b9d433c15de01eba7016_wannacry.exesvchost.execmd.execmd.execmd.exedescription pid process target process PID 2948 wrote to memory of 2872 2948 2024-04-26_755b4533d952b9d433c15de01eba7016_wannacry.exe svchost.exe PID 2948 wrote to memory of 2872 2948 2024-04-26_755b4533d952b9d433c15de01eba7016_wannacry.exe svchost.exe PID 2948 wrote to memory of 2872 2948 2024-04-26_755b4533d952b9d433c15de01eba7016_wannacry.exe svchost.exe PID 2872 wrote to memory of 2100 2872 svchost.exe cmd.exe PID 2872 wrote to memory of 2100 2872 svchost.exe cmd.exe PID 2872 wrote to memory of 2100 2872 svchost.exe cmd.exe PID 2100 wrote to memory of 2656 2100 cmd.exe vssadmin.exe PID 2100 wrote to memory of 2656 2100 cmd.exe vssadmin.exe PID 2100 wrote to memory of 2656 2100 cmd.exe vssadmin.exe PID 2100 wrote to memory of 2548 2100 cmd.exe WMIC.exe PID 2100 wrote to memory of 2548 2100 cmd.exe WMIC.exe PID 2100 wrote to memory of 2548 2100 cmd.exe WMIC.exe PID 2872 wrote to memory of 1672 2872 svchost.exe cmd.exe PID 2872 wrote to memory of 1672 2872 svchost.exe cmd.exe PID 2872 wrote to memory of 1672 2872 svchost.exe cmd.exe PID 1672 wrote to memory of 1580 1672 cmd.exe bcdedit.exe PID 1672 wrote to memory of 1580 1672 cmd.exe bcdedit.exe PID 1672 wrote to memory of 1580 1672 cmd.exe bcdedit.exe PID 1672 wrote to memory of 1536 1672 cmd.exe bcdedit.exe PID 1672 wrote to memory of 1536 1672 cmd.exe bcdedit.exe PID 1672 wrote to memory of 1536 1672 cmd.exe bcdedit.exe PID 2872 wrote to memory of 1556 2872 svchost.exe cmd.exe PID 2872 wrote to memory of 1556 2872 svchost.exe cmd.exe PID 2872 wrote to memory of 1556 2872 svchost.exe cmd.exe PID 1556 wrote to memory of 2412 1556 cmd.exe wbadmin.exe PID 1556 wrote to memory of 2412 1556 cmd.exe wbadmin.exe PID 1556 wrote to memory of 2412 1556 cmd.exe wbadmin.exe PID 2872 wrote to memory of 2928 2872 svchost.exe NOTEPAD.EXE PID 2872 wrote to memory of 2928 2872 svchost.exe NOTEPAD.EXE PID 2872 wrote to memory of 2928 2872 svchost.exe NOTEPAD.EXE -
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\2024-04-26_755b4533d952b9d433c15de01eba7016_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-26_755b4533d952b9d433c15de01eba7016_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2948 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2872 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2100 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2656 -
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2548 -
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:1672 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1580 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1536 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1556 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2412 -
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:2928
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2556
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1804
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:384
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1652
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD53c08014c9c865e808db93f81d9e99d42
SHA1c529887dc860f5f82868001e2736bc09291d0c9b
SHA256a3293c7c2918b1f33c63872f2322f2b057487739b68b5025ce8128986a06cfd1
SHA512af5bbb7c6e0efbe31838334397edced832df773859a5c273335973c3d0711d909f1717bfcbf981ae12f8f0b382db1671c28c600bad8cf38032b9e2895cdaf581
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
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Filesize
286KB
MD5755b4533d952b9d433c15de01eba7016
SHA13826d33e4ba7a13355d2d5f38525a168e88eeffa
SHA25657838f27fb1a0d7b5ce3cc319f29d07b23eaf1378ff6c67144bc0e3b2a1eb1c9
SHA5126381e224581623fd21daeedd8ebfe5e7658aace94ad55f66f91ec80041da57731b9910eb4df3f513ed75b90b08923272e01af906ba1050d7ffaac6052131dd9c