Analysis
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max time kernel
148s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240319-en -
resource tags
arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system -
submitted
20-03-2024 06:31
Behavioral task
behavioral1
Sample
2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe
Resource
win10v2004-20240319-en
General
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Target
2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe
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Size
294KB
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MD5
f637065576c46fdf526f6156a06a8102
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SHA1
208f7d972d29f58c6c18a58242d7764d6969c838
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SHA256
b08d4f13f88946dbc97537569f4516ddf832c36d4636501abbad24f505904222
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SHA512
9a194f4661dd716770c45bcb90052b1cc8aa90b3593bae4ddad75193a04c397a7f8ca7d03559dbba9167b90fdf31a9ce6a8d6697773809ca444e36a546eb078a
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SSDEEP
6144:Rr9W1lNCM2n08o/2mWwEzg+0c+BMCfAXtMcOpXaLbik+:olNJ2n08o/2XwE0+fuMCfAdMcOpXubib
Malware Config
Extracted
C:\Users\Admin\Documents\read_it.txt
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/3232-0-0x0000000000830000-0x0000000000880000-memory.dmp family_chaos behavioral2/files/0x0008000000023313-6.dat 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 2 IoCs
resource yara_rule behavioral2/memory/3232-0-0x0000000000830000-0x0000000000880000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral2/files/0x0008000000023313-6.dat INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 2236 bcdedit.exe 4420 bcdedit.exe -
pid Process 2516 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-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe Key value queried \REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation runner.exe -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\runner.url runner.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini runner.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt runner.exe -
Executes dropped EXE 1 IoCs
pid Process 2044 runner.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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini runner.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini runner.exe File opened for modification C:\Users\Admin\Searches\desktop.ini runner.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini runner.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini runner.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-817259280-2658881748-983986378-1000\desktop.ini runner.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini runner.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini runner.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini runner.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini runner.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini runner.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini runner.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini runner.exe File opened for modification C:\Users\Admin\Music\desktop.ini runner.exe File opened for modification C:\Users\Public\Music\desktop.ini runner.exe File opened for modification C:\Users\Public\Videos\desktop.ini runner.exe File opened for modification C:\Users\Public\Pictures\desktop.ini runner.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini runner.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini runner.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini runner.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini runner.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini runner.exe File opened for modification C:\Users\Admin\Links\desktop.ini runner.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini runner.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini runner.exe File opened for modification C:\Users\Public\Desktop\desktop.ini runner.exe File opened for modification C:\Users\Public\Documents\desktop.ini runner.exe File opened for modification C:\Users\Admin\Documents\desktop.ini runner.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini runner.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini runner.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini runner.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini runner.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini runner.exe File opened for modification C:\Users\Admin\Videos\desktop.ini runner.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ismflpl19.jpg" runner.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\Disk&Ven_QEMU&Prod_HARDDISK\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 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_QEMU&PROD_HARDDISK\4&215468A5&0&000000 vds.exe -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1484 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-817259280-2658881748-983986378-1000_Classes\Local Settings runner.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1276 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2044 runner.exe -
Suspicious behavior: EnumeratesProcesses 42 IoCs
pid Process 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe 2044 runner.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe Token: SeDebugPrivilege 2044 runner.exe Token: SeBackupPrivilege 2928 vssvc.exe Token: SeRestorePrivilege 2928 vssvc.exe Token: SeAuditPrivilege 2928 vssvc.exe Token: SeIncreaseQuotaPrivilege 3544 WMIC.exe Token: SeSecurityPrivilege 3544 WMIC.exe Token: SeTakeOwnershipPrivilege 3544 WMIC.exe Token: SeLoadDriverPrivilege 3544 WMIC.exe Token: SeSystemProfilePrivilege 3544 WMIC.exe Token: SeSystemtimePrivilege 3544 WMIC.exe Token: SeProfSingleProcessPrivilege 3544 WMIC.exe Token: SeIncBasePriorityPrivilege 3544 WMIC.exe Token: SeCreatePagefilePrivilege 3544 WMIC.exe Token: SeBackupPrivilege 3544 WMIC.exe Token: SeRestorePrivilege 3544 WMIC.exe Token: SeShutdownPrivilege 3544 WMIC.exe Token: SeDebugPrivilege 3544 WMIC.exe Token: SeSystemEnvironmentPrivilege 3544 WMIC.exe Token: SeRemoteShutdownPrivilege 3544 WMIC.exe Token: SeUndockPrivilege 3544 WMIC.exe Token: SeManageVolumePrivilege 3544 WMIC.exe Token: 33 3544 WMIC.exe Token: 34 3544 WMIC.exe Token: 35 3544 WMIC.exe Token: 36 3544 WMIC.exe Token: SeIncreaseQuotaPrivilege 3544 WMIC.exe Token: SeSecurityPrivilege 3544 WMIC.exe Token: SeTakeOwnershipPrivilege 3544 WMIC.exe Token: SeLoadDriverPrivilege 3544 WMIC.exe Token: SeSystemProfilePrivilege 3544 WMIC.exe Token: SeSystemtimePrivilege 3544 WMIC.exe Token: SeProfSingleProcessPrivilege 3544 WMIC.exe Token: SeIncBasePriorityPrivilege 3544 WMIC.exe Token: SeCreatePagefilePrivilege 3544 WMIC.exe Token: SeBackupPrivilege 3544 WMIC.exe Token: SeRestorePrivilege 3544 WMIC.exe Token: SeShutdownPrivilege 3544 WMIC.exe Token: SeDebugPrivilege 3544 WMIC.exe Token: SeSystemEnvironmentPrivilege 3544 WMIC.exe Token: SeRemoteShutdownPrivilege 3544 WMIC.exe Token: SeUndockPrivilege 3544 WMIC.exe Token: SeManageVolumePrivilege 3544 WMIC.exe Token: 33 3544 WMIC.exe Token: 34 3544 WMIC.exe Token: 35 3544 WMIC.exe Token: 36 3544 WMIC.exe Token: SeBackupPrivilege 4548 wbengine.exe Token: SeRestorePrivilege 4548 wbengine.exe Token: SeSecurityPrivilege 4548 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 3232 wrote to memory of 2044 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 94 PID 3232 wrote to memory of 2044 3232 2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe 94 PID 2044 wrote to memory of 4448 2044 runner.exe 98 PID 2044 wrote to memory of 4448 2044 runner.exe 98 PID 4448 wrote to memory of 1484 4448 cmd.exe 100 PID 4448 wrote to memory of 1484 4448 cmd.exe 100 PID 4448 wrote to memory of 3544 4448 cmd.exe 103 PID 4448 wrote to memory of 3544 4448 cmd.exe 103 PID 2044 wrote to memory of 4940 2044 runner.exe 105 PID 2044 wrote to memory of 4940 2044 runner.exe 105 PID 4940 wrote to memory of 2236 4940 cmd.exe 107 PID 4940 wrote to memory of 2236 4940 cmd.exe 107 PID 4940 wrote to memory of 4420 4940 cmd.exe 108 PID 4940 wrote to memory of 4420 4940 cmd.exe 108 PID 2044 wrote to memory of 2392 2044 runner.exe 109 PID 2044 wrote to memory of 2392 2044 runner.exe 109 PID 2392 wrote to memory of 2516 2392 cmd.exe 111 PID 2392 wrote to memory of 2516 2392 cmd.exe 111 PID 2044 wrote to memory of 1276 2044 runner.exe 115 PID 2044 wrote to memory of 1276 2044 runner.exe 115 -
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\2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-20_f637065576c46fdf526f6156a06a8102_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3232 -
C:\Users\Admin\AppData\Roaming\runner.exe"C:\Users\Admin\AppData\Roaming\runner.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:2044 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:4448 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1484
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3544
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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:4940 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2236
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:4420
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2392 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2516
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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:1276
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2928
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4548
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:4672
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:1120
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1340 --field-trial-handle=2284,i,13100272738549420251,6151825632958897606,262144 --variations-seed-version /prefetch:81⤵PID:2236
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
294KB
MD5f637065576c46fdf526f6156a06a8102
SHA1208f7d972d29f58c6c18a58242d7764d6969c838
SHA256b08d4f13f88946dbc97537569f4516ddf832c36d4636501abbad24f505904222
SHA5129a194f4661dd716770c45bcb90052b1cc8aa90b3593bae4ddad75193a04c397a7f8ca7d03559dbba9167b90fdf31a9ce6a8d6697773809ca444e36a546eb078a
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Filesize
1KB
MD57e52dc42a2ec24d41406e3990ef75582
SHA13f3bf46735446cba9d6b76ee71704cdf1330dfa8
SHA256cc70ff5d6016c38e22f490120c49be9ac1509e1b0288e51d21746b8f570d690a
SHA5125e9fecb01d2ea2dc421324b718cb824c21e41360a6292ac24b3a535ec2654745fdf6f8a943cacd417a897e8e50d1ad6dd088fbbae1f4158ec2bc027d537cb70b