Analysis
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max time kernel
24s -
max time network
19s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
18-11-2024 05:37
Behavioral task
behavioral1
Sample
2024-11-18_765079967592ca7293da5e2b792d3442_wannacry.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
2024-11-18_765079967592ca7293da5e2b792d3442_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2024-11-18_765079967592ca7293da5e2b792d3442_wannacry.exe
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Size
295KB
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MD5
765079967592ca7293da5e2b792d3442
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SHA1
0ca816f83480e9ab4bac02c7af501c7058ddad88
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SHA256
d65bb45d038c257ccd7cf42aa6179e0b2095e14209101ee2dcaee4f69586a54a
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SHA512
e2651e113244e73eb84e8606d64803ff464cad9ac921d777f8cebc00d626e170d37f28a1febf55882c6859d893aed99de9e01629fe965b2276cfef07e9f4ade6
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SSDEEP
6144:8Sr9ScdUdRZek/jzIhnqjE/xgrSzgDQxGsokL:ndUd/V4hnmE/CSIQM6
Malware Config
Extracted
C:\Users\Admin\Desktop\read_it.txt
chaos
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 3 IoCs
resource yara_rule behavioral1/memory/2496-1-0x00000000003E0000-0x0000000000430000-memory.dmp family_chaos behavioral1/files/0x000d000000012263-5.dat family_chaos behavioral1/memory/3028-7-0x0000000000E60000-0x0000000000EB0000-memory.dmp 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 2288 bcdedit.exe 1760 bcdedit.exe -
pid Process 2424 wbadmin.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 3028 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\Accessories\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\Links\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\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\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\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\Desktop\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\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\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\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\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\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-1-5-21-3692679935-4019334568-335155002-1000\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\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\Public\Pictures\Sample 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\Libraries\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3h2qqeed3.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 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1976 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2460 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3028 svchost.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 2496 2024-11-18_765079967592ca7293da5e2b792d3442_wannacry.exe 3028 svchost.exe 3028 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2496 2024-11-18_765079967592ca7293da5e2b792d3442_wannacry.exe Token: SeDebugPrivilege 3028 svchost.exe Token: SeBackupPrivilege 2332 vssvc.exe Token: SeRestorePrivilege 2332 vssvc.exe Token: SeAuditPrivilege 2332 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 2456 wbengine.exe Token: SeRestorePrivilege 2456 wbengine.exe Token: SeSecurityPrivilege 2456 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2496 wrote to memory of 3028 2496 2024-11-18_765079967592ca7293da5e2b792d3442_wannacry.exe 29 PID 2496 wrote to memory of 3028 2496 2024-11-18_765079967592ca7293da5e2b792d3442_wannacry.exe 29 PID 2496 wrote to memory of 3028 2496 2024-11-18_765079967592ca7293da5e2b792d3442_wannacry.exe 29 PID 3028 wrote to memory of 1384 3028 svchost.exe 31 PID 3028 wrote to memory of 1384 3028 svchost.exe 31 PID 3028 wrote to memory of 1384 3028 svchost.exe 31 PID 1384 wrote to memory of 1976 1384 cmd.exe 33 PID 1384 wrote to memory of 1976 1384 cmd.exe 33 PID 1384 wrote to memory of 1976 1384 cmd.exe 33 PID 1384 wrote to memory of 2548 1384 cmd.exe 36 PID 1384 wrote to memory of 2548 1384 cmd.exe 36 PID 1384 wrote to memory of 2548 1384 cmd.exe 36 PID 3028 wrote to memory of 2428 3028 svchost.exe 38 PID 3028 wrote to memory of 2428 3028 svchost.exe 38 PID 3028 wrote to memory of 2428 3028 svchost.exe 38 PID 2428 wrote to memory of 2288 2428 cmd.exe 40 PID 2428 wrote to memory of 2288 2428 cmd.exe 40 PID 2428 wrote to memory of 2288 2428 cmd.exe 40 PID 2428 wrote to memory of 1760 2428 cmd.exe 41 PID 2428 wrote to memory of 1760 2428 cmd.exe 41 PID 2428 wrote to memory of 1760 2428 cmd.exe 41 PID 3028 wrote to memory of 1320 3028 svchost.exe 42 PID 3028 wrote to memory of 1320 3028 svchost.exe 42 PID 3028 wrote to memory of 1320 3028 svchost.exe 42 PID 1320 wrote to memory of 2424 1320 cmd.exe 44 PID 1320 wrote to memory of 2424 1320 cmd.exe 44 PID 1320 wrote to memory of 2424 1320 cmd.exe 44 PID 3028 wrote to memory of 2460 3028 svchost.exe 48 PID 3028 wrote to memory of 2460 3028 svchost.exe 48 PID 3028 wrote to memory of 2460 3028 svchost.exe 48 -
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\2024-11-18_765079967592ca7293da5e2b792d3442_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-18_765079967592ca7293da5e2b792d3442_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2496 -
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:3028 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1384 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1976
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2548
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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:2428 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2288
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1760
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1320 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2424
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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:2460
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2332
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2456
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2692
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1756
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
295KB
MD5765079967592ca7293da5e2b792d3442
SHA10ca816f83480e9ab4bac02c7af501c7058ddad88
SHA256d65bb45d038c257ccd7cf42aa6179e0b2095e14209101ee2dcaee4f69586a54a
SHA512e2651e113244e73eb84e8606d64803ff464cad9ac921d777f8cebc00d626e170d37f28a1febf55882c6859d893aed99de9e01629fe965b2276cfef07e9f4ade6
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740