Analysis
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max time kernel
119s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
16-09-2024 12:05
Behavioral task
behavioral1
Sample
2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe
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Size
533KB
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MD5
e7d91103647b76f121b854fe806f80e2
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SHA1
e6adca5f83dfb2cca099cf18d6960d422b82bb9e
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SHA256
04ed744d9643830fc5f0499203a6fde506b5f2c89868695bfe179a8edb3b28c0
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SHA512
69dc672bfe3a89ebe71b8041159afab0231701ea59438feb1f000ddddf52627c1f7c6f36bd8c2f77f037dd2659e6ef8f27db283476dae228522051659f2f67b0
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SSDEEP
12288:8k6L8u3RTkuA+y7GNfBGq5xJlA+MpCi4Pw25z5I0+OBjDRMmjrkR3wa:3bU4+Il2L1yw
Malware Config
Extracted
C:\Users\Admin\AppData\Local\read_it.txt
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/2976-1-0x0000000000120000-0x00000000001AC000-memory.dmp family_chaos behavioral1/files/0x000f000000012245-6.dat family_chaos behavioral1/memory/2388-8-0x0000000000A60000-0x0000000000AEC000-memory.dmp 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 3000 bcdedit.exe 2808 bcdedit.exe -
pid Process 1696 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 2 IoCs
description ioc Process 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 2388 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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\UpdateTask = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe" svchost.exe -
Drops desktop.ini file(s) 64 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\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\Local\Microsoft\Feeds Cache\YPLB435F\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\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\Accessibility\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\Downloads\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\Music\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 for United States\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\Local\Microsoft\Windows\Temporary Internet Files\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\Public\Pictures\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\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Windows PowerShell\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\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\R627XHFP\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\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\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\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\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\T072YXIW\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\4DY23DRT\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\CUMHXU73\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\Videos\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\Admin\Links\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-312935884-697965778-3955649944-1000\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\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\Start Menu\Programs\Accessories\System 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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\OM66BHWE\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\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\Contacts\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\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\U8F4PBMO\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\Desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\jklntouad.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 3028 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2340 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2388 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2976 2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe 2976 2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe 2976 2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe 2388 svchost.exe 2388 svchost.exe 2388 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2976 2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe Token: SeDebugPrivilege 2388 svchost.exe Token: SeBackupPrivilege 2312 vssvc.exe Token: SeRestorePrivilege 2312 vssvc.exe Token: SeAuditPrivilege 2312 vssvc.exe Token: SeIncreaseQuotaPrivilege 2712 WMIC.exe Token: SeSecurityPrivilege 2712 WMIC.exe Token: SeTakeOwnershipPrivilege 2712 WMIC.exe Token: SeLoadDriverPrivilege 2712 WMIC.exe Token: SeSystemProfilePrivilege 2712 WMIC.exe Token: SeSystemtimePrivilege 2712 WMIC.exe Token: SeProfSingleProcessPrivilege 2712 WMIC.exe Token: SeIncBasePriorityPrivilege 2712 WMIC.exe Token: SeCreatePagefilePrivilege 2712 WMIC.exe Token: SeBackupPrivilege 2712 WMIC.exe Token: SeRestorePrivilege 2712 WMIC.exe Token: SeShutdownPrivilege 2712 WMIC.exe Token: SeDebugPrivilege 2712 WMIC.exe Token: SeSystemEnvironmentPrivilege 2712 WMIC.exe Token: SeRemoteShutdownPrivilege 2712 WMIC.exe Token: SeUndockPrivilege 2712 WMIC.exe Token: SeManageVolumePrivilege 2712 WMIC.exe Token: 33 2712 WMIC.exe Token: 34 2712 WMIC.exe Token: 35 2712 WMIC.exe Token: SeIncreaseQuotaPrivilege 2712 WMIC.exe Token: SeSecurityPrivilege 2712 WMIC.exe Token: SeTakeOwnershipPrivilege 2712 WMIC.exe Token: SeLoadDriverPrivilege 2712 WMIC.exe Token: SeSystemProfilePrivilege 2712 WMIC.exe Token: SeSystemtimePrivilege 2712 WMIC.exe Token: SeProfSingleProcessPrivilege 2712 WMIC.exe Token: SeIncBasePriorityPrivilege 2712 WMIC.exe Token: SeCreatePagefilePrivilege 2712 WMIC.exe Token: SeBackupPrivilege 2712 WMIC.exe Token: SeRestorePrivilege 2712 WMIC.exe Token: SeShutdownPrivilege 2712 WMIC.exe Token: SeDebugPrivilege 2712 WMIC.exe Token: SeSystemEnvironmentPrivilege 2712 WMIC.exe Token: SeRemoteShutdownPrivilege 2712 WMIC.exe Token: SeUndockPrivilege 2712 WMIC.exe Token: SeManageVolumePrivilege 2712 WMIC.exe Token: 33 2712 WMIC.exe Token: 34 2712 WMIC.exe Token: 35 2712 WMIC.exe Token: SeBackupPrivilege 1892 wbengine.exe Token: SeRestorePrivilege 1892 wbengine.exe Token: SeSecurityPrivilege 1892 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2976 wrote to memory of 2388 2976 2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe 30 PID 2976 wrote to memory of 2388 2976 2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe 30 PID 2976 wrote to memory of 2388 2976 2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe 30 PID 2388 wrote to memory of 1928 2388 svchost.exe 31 PID 2388 wrote to memory of 1928 2388 svchost.exe 31 PID 2388 wrote to memory of 1928 2388 svchost.exe 31 PID 1928 wrote to memory of 3028 1928 cmd.exe 33 PID 1928 wrote to memory of 3028 1928 cmd.exe 33 PID 1928 wrote to memory of 3028 1928 cmd.exe 33 PID 1928 wrote to memory of 2712 1928 cmd.exe 36 PID 1928 wrote to memory of 2712 1928 cmd.exe 36 PID 1928 wrote to memory of 2712 1928 cmd.exe 36 PID 2388 wrote to memory of 2620 2388 svchost.exe 38 PID 2388 wrote to memory of 2620 2388 svchost.exe 38 PID 2388 wrote to memory of 2620 2388 svchost.exe 38 PID 2620 wrote to memory of 3000 2620 cmd.exe 40 PID 2620 wrote to memory of 3000 2620 cmd.exe 40 PID 2620 wrote to memory of 3000 2620 cmd.exe 40 PID 2620 wrote to memory of 2808 2620 cmd.exe 41 PID 2620 wrote to memory of 2808 2620 cmd.exe 41 PID 2620 wrote to memory of 2808 2620 cmd.exe 41 PID 2388 wrote to memory of 1040 2388 svchost.exe 42 PID 2388 wrote to memory of 1040 2388 svchost.exe 42 PID 2388 wrote to memory of 1040 2388 svchost.exe 42 PID 1040 wrote to memory of 1696 1040 cmd.exe 44 PID 1040 wrote to memory of 1696 1040 cmd.exe 44 PID 1040 wrote to memory of 1696 1040 cmd.exe 44 PID 2388 wrote to memory of 2340 2388 svchost.exe 49 PID 2388 wrote to memory of 2340 2388 svchost.exe 49 PID 2388 wrote to memory of 2340 2388 svchost.exe 49 -
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\2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-16_e7d91103647b76f121b854fe806f80e2_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2976 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- 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:2388 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1928 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:3028
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2712
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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:2620 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:3000
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2808
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1040 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1696
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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:2340
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2312
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1892
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1940
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2084
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
582B
MD576e381f78e94c35d358a4fc048d3aa37
SHA1361d4153f76f32d36c1edd3da27e59f41f7e2d0f
SHA256db317b799b14715d1b26661dd60570faa3b5c377656d490cd2697f78271c413f
SHA512ef1d2bd09d8e34eb6260d11a3ac821cdd1b6aa1dba0c8616cbed1d233979d39ceb00c369ccabb6630324ef0027a83b6b61729b2ed66d55bf249387782a1fe4e3
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C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\1bogwdvw.default-release\storage\permanent\chrome\idb\3561288849sdhlie.sqlite.r1a6
Filesize48KB
MD53d43ef7934a6dbf709931ba951579848
SHA1ff4b759dfc0e904bd85182e09d4bc63c3ad526c6
SHA2562fb73160c476a2df5c1db1ae809dab9c3b50585272909635adc6fc57e5b8cd84
SHA512b9a5f74543984b1ad1e810b466177789922ae2fb6d59e1f472a8da0d2f67fdd2216b0c4f188a621653997f3c6294fa825e2fc74d642d696332b701edaa777760
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Filesize
533KB
MD5e7d91103647b76f121b854fe806f80e2
SHA1e6adca5f83dfb2cca099cf18d6960d422b82bb9e
SHA25604ed744d9643830fc5f0499203a6fde506b5f2c89868695bfe179a8edb3b28c0
SHA51269dc672bfe3a89ebe71b8041159afab0231701ea59438feb1f000ddddf52627c1f7c6f36bd8c2f77f037dd2659e6ef8f27db283476dae228522051659f2f67b0
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C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Command Prompt.lnk
Filesize1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0