Analysis
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max time kernel
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max time network
124s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
04-09-2024 06:41
Behavioral task
behavioral1
Sample
2024-09-04_944a94e955dcdfd6bf8d20ac6f09b0de_wannacry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-09-04_944a94e955dcdfd6bf8d20ac6f09b0de_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-09-04_944a94e955dcdfd6bf8d20ac6f09b0de_wannacry.exe
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Size
388KB
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MD5
944a94e955dcdfd6bf8d20ac6f09b0de
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SHA1
9f1debe6edea9c586a2b4376b6ec57047bec7e0d
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SHA256
f16e0c8253a5d0e297a752f506b266e1525c593ca1f78c71f252544f6d2c84c1
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SHA512
b966fb881df5d5faff8a2f808a81d0b288072b476155a40f4abcf5e0b298a7154a0102603187bfe3d7eedc1cb8e16d4ccd7c52f7a23694b31222f447afb8116c
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SSDEEP
6144:KvEr9gXp97YQY8kuOybsP5OaoWzw7zDUJZP6l8cND0:ID7VY8kuOybsP5fKl84D
Malware Config
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/2880-1-0x0000000000320000-0x0000000000386000-memory.dmp family_chaos behavioral1/files/0x0007000000012117-5.dat family_chaos behavioral1/memory/1864-7-0x00000000013B0000-0x0000000001416000-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 2140 bcdedit.exe 2508 bcdedit.exe -
pid Process 820 wbadmin.exe -
Drops startup file 3 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini windowsdefender.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\README.txt windowsdefender.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\windowsdefender.url windowsdefender.exe -
Executes dropped EXE 1 IoCs
pid Process 1864 windowsdefender.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) 34 IoCs
description ioc Process File opened for modification C:\Users\Admin\Pictures\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Videos\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Pictures\desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Videos\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Music\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Desktop\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Searches\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Music\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Documents\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Links\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini windowsdefender.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini windowsdefender.exe File opened for modification C:\Users\Public\Documents\desktop.ini windowsdefender.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2872745919-2748461613-2989606286-1000\desktop.ini windowsdefender.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wfzitgagj.jpg" windowsdefender.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 992 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1624 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1864 windowsdefender.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 2880 2024-09-04_944a94e955dcdfd6bf8d20ac6f09b0de_wannacry.exe 2880 2024-09-04_944a94e955dcdfd6bf8d20ac6f09b0de_wannacry.exe 2880 2024-09-04_944a94e955dcdfd6bf8d20ac6f09b0de_wannacry.exe 1864 windowsdefender.exe 1864 windowsdefender.exe 1864 windowsdefender.exe 1864 windowsdefender.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2880 2024-09-04_944a94e955dcdfd6bf8d20ac6f09b0de_wannacry.exe Token: SeDebugPrivilege 1864 windowsdefender.exe Token: SeBackupPrivilege 2032 vssvc.exe Token: SeRestorePrivilege 2032 vssvc.exe Token: SeAuditPrivilege 2032 vssvc.exe Token: SeIncreaseQuotaPrivilege 2104 WMIC.exe Token: SeSecurityPrivilege 2104 WMIC.exe Token: SeTakeOwnershipPrivilege 2104 WMIC.exe Token: SeLoadDriverPrivilege 2104 WMIC.exe Token: SeSystemProfilePrivilege 2104 WMIC.exe Token: SeSystemtimePrivilege 2104 WMIC.exe Token: SeProfSingleProcessPrivilege 2104 WMIC.exe Token: SeIncBasePriorityPrivilege 2104 WMIC.exe Token: SeCreatePagefilePrivilege 2104 WMIC.exe Token: SeBackupPrivilege 2104 WMIC.exe Token: SeRestorePrivilege 2104 WMIC.exe Token: SeShutdownPrivilege 2104 WMIC.exe Token: SeDebugPrivilege 2104 WMIC.exe Token: SeSystemEnvironmentPrivilege 2104 WMIC.exe Token: SeRemoteShutdownPrivilege 2104 WMIC.exe Token: SeUndockPrivilege 2104 WMIC.exe Token: SeManageVolumePrivilege 2104 WMIC.exe Token: 33 2104 WMIC.exe Token: 34 2104 WMIC.exe Token: 35 2104 WMIC.exe Token: SeIncreaseQuotaPrivilege 2104 WMIC.exe Token: SeSecurityPrivilege 2104 WMIC.exe Token: SeTakeOwnershipPrivilege 2104 WMIC.exe Token: SeLoadDriverPrivilege 2104 WMIC.exe Token: SeSystemProfilePrivilege 2104 WMIC.exe Token: SeSystemtimePrivilege 2104 WMIC.exe Token: SeProfSingleProcessPrivilege 2104 WMIC.exe Token: SeIncBasePriorityPrivilege 2104 WMIC.exe Token: SeCreatePagefilePrivilege 2104 WMIC.exe Token: SeBackupPrivilege 2104 WMIC.exe Token: SeRestorePrivilege 2104 WMIC.exe Token: SeShutdownPrivilege 2104 WMIC.exe Token: SeDebugPrivilege 2104 WMIC.exe Token: SeSystemEnvironmentPrivilege 2104 WMIC.exe Token: SeRemoteShutdownPrivilege 2104 WMIC.exe Token: SeUndockPrivilege 2104 WMIC.exe Token: SeManageVolumePrivilege 2104 WMIC.exe Token: 33 2104 WMIC.exe Token: 34 2104 WMIC.exe Token: 35 2104 WMIC.exe Token: SeBackupPrivilege 108 wbengine.exe Token: SeRestorePrivilege 108 wbengine.exe Token: SeSecurityPrivilege 108 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2880 wrote to memory of 1864 2880 2024-09-04_944a94e955dcdfd6bf8d20ac6f09b0de_wannacry.exe 30 PID 2880 wrote to memory of 1864 2880 2024-09-04_944a94e955dcdfd6bf8d20ac6f09b0de_wannacry.exe 30 PID 2880 wrote to memory of 1864 2880 2024-09-04_944a94e955dcdfd6bf8d20ac6f09b0de_wannacry.exe 30 PID 1864 wrote to memory of 2972 1864 windowsdefender.exe 32 PID 1864 wrote to memory of 2972 1864 windowsdefender.exe 32 PID 1864 wrote to memory of 2972 1864 windowsdefender.exe 32 PID 2972 wrote to memory of 992 2972 cmd.exe 34 PID 2972 wrote to memory of 992 2972 cmd.exe 34 PID 2972 wrote to memory of 992 2972 cmd.exe 34 PID 2972 wrote to memory of 2104 2972 cmd.exe 37 PID 2972 wrote to memory of 2104 2972 cmd.exe 37 PID 2972 wrote to memory of 2104 2972 cmd.exe 37 PID 1864 wrote to memory of 444 1864 windowsdefender.exe 39 PID 1864 wrote to memory of 444 1864 windowsdefender.exe 39 PID 1864 wrote to memory of 444 1864 windowsdefender.exe 39 PID 444 wrote to memory of 2140 444 cmd.exe 41 PID 444 wrote to memory of 2140 444 cmd.exe 41 PID 444 wrote to memory of 2140 444 cmd.exe 41 PID 444 wrote to memory of 2508 444 cmd.exe 42 PID 444 wrote to memory of 2508 444 cmd.exe 42 PID 444 wrote to memory of 2508 444 cmd.exe 42 PID 1864 wrote to memory of 1888 1864 windowsdefender.exe 43 PID 1864 wrote to memory of 1888 1864 windowsdefender.exe 43 PID 1864 wrote to memory of 1888 1864 windowsdefender.exe 43 PID 1888 wrote to memory of 820 1888 cmd.exe 45 PID 1888 wrote to memory of 820 1888 cmd.exe 45 PID 1888 wrote to memory of 820 1888 cmd.exe 45 PID 1864 wrote to memory of 1624 1864 windowsdefender.exe 49 PID 1864 wrote to memory of 1624 1864 windowsdefender.exe 49 PID 1864 wrote to memory of 1624 1864 windowsdefender.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\2024-09-04_944a94e955dcdfd6bf8d20ac6f09b0de_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-04_944a94e955dcdfd6bf8d20ac6f09b0de_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2880 -
C:\Users\Admin\AppData\Roaming\windowsdefender.exe"C:\Users\Admin\AppData\Roaming\windowsdefender.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:1864 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2972 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:992
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2104
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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:444 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2140
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2508
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1888 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:820
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\README.txt3⤵
- Opens file in notepad (likely ransom note)
PID:1624
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2032
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:108
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2176
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2132
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
388KB
MD5944a94e955dcdfd6bf8d20ac6f09b0de
SHA19f1debe6edea9c586a2b4376b6ec57047bec7e0d
SHA256f16e0c8253a5d0e297a752f506b266e1525c593ca1f78c71f252544f6d2c84c1
SHA512b966fb881df5d5faff8a2f808a81d0b288072b476155a40f4abcf5e0b298a7154a0102603187bfe3d7eedc1cb8e16d4ccd7c52f7a23694b31222f447afb8116c
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Filesize
158B
MD5fd0f1ca751bd4de5c2a568bf3f988858
SHA1ea9f1c0c32d0cea7f908541c8e21f4ef85944f44
SHA25668f2dd3a115e2eb559140cef68b871dd60afa0f972bff9cbcfb4582ad65f6b5f
SHA5125bea4f1b6526fb6a8c29410a6aab20b294dc421619a5e83402ab58cf0eb574044257fd3d4bd0dabe32273f9fd0e90cbf167f092d6e37903633b73e73a90bf777