Analysis
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max time kernel
66s -
max time network
50s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
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submitted
30-04-2024 18:59
General
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Target
2024-04-30_c9f6fc22d04c4d56622e9322d1a34d70_wannacry.exe
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Size
1.1MB
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MD5
c9f6fc22d04c4d56622e9322d1a34d70
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SHA1
d45ed6385e183456f1d0f68aba47727df1d38256
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SHA256
b7b3f9f8e59c42d40505a0e53039b69ba969b84b14d31a71557f5a09855b678a
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SHA512
f73342e15b3f1fb180f845950ed90f0fdc9c54f1040d457d78f2a13be445d65650dca455b254254db566e81b4c089539370edda3ef76a4c5bbc32ea7aaaa40e2
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SSDEEP
12288:o7YHBR9ideJWmXm+if5BYstvfCjqf2KqY5UBx2qIYvnv+pkiccfIzdLzsb4D7ZfL:ogBNq5u0v6AUjBfLyZEi
Malware Config
Extracted
C:\Users\Default\read_it.txt
https://coinflip.tech
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
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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
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Detects executables containing many references to VEEAM. Observed in ransomware 2 IoCs
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Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
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Renames multiple (261) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Deletes backup catalog 3 TTPs 1 IoCs
Uses wbadmin.exe to inhibit system recovery.
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Disables Task Manager via registry modification
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
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Drops startup file 2 IoCs
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Executes dropped EXE 1 IoCs
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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
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Drops desktop.ini file(s) 64 IoCs
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Sets desktop wallpaper using registry 2 TTPs 1 IoCs
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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.
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
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Modifies registry class 1 IoCs
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Opens file in notepad (likely ransom note) 1 IoCs
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Suspicious behavior: AddClipboardFormatListener 2 IoCs
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Suspicious behavior: EnumeratesProcesses 46 IoCs
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Suspicious use of AdjustPrivilegeToken 50 IoCs
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Suspicious use of WriteProcessMemory 20 IoCs
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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\2024-04-30_c9f6fc22d04c4d56622e9322d1a34d70_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-30_c9f6fc22d04c4d56622e9322d1a34d70_wannacry.exe"1⤵
- Checks computer location settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Installer.exe"C:\Users\Admin\AppData\Roaming\Installer.exe"2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- 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
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
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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
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C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
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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)
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD5baf55b95da4a601229647f25dad12878
SHA1abc16954ebfd213733c4493fc1910164d825cac8
SHA256ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924
SHA51224f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545
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Filesize
1.1MB
MD5c9f6fc22d04c4d56622e9322d1a34d70
SHA1d45ed6385e183456f1d0f68aba47727df1d38256
SHA256b7b3f9f8e59c42d40505a0e53039b69ba969b84b14d31a71557f5a09855b678a
SHA512f73342e15b3f1fb180f845950ed90f0fdc9c54f1040d457d78f2a13be445d65650dca455b254254db566e81b4c089539370edda3ef76a4c5bbc32ea7aaaa40e2
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Filesize
48KB
MD5b1730c5793cf808333ce080f2f34c482
SHA136a2b835ed3f007872e871a2aa5eea8ad4ad6cd9
SHA256b6177e44743826511f37fe5abf2d467c07627d699d03e92d91c8d28c3fb47e2a
SHA512b0371e8c0d05c0b99919d65ccf1a32f562b1b5d8517f4324bb720e5146730663436230bb3d17861065bdad19a628958c12290266c4ed3b26f0858fa18ccfc8ae
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
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Filesize
4KB
MD53487c41ad8ea8f2659c603539beaf06e
SHA1b1d658eba8f7be795a5bbd6657036d6cb08fa6b9
SHA25631e3c22beda1445bba2c1e275fc4bc3f3cfa5d835db1ecf15ffa65d340436d89
SHA512d936da83f894bf5de5d4d761bf4298f16a867ebb3a7873bb53f2915d5be440234310c4e07048b2a5beab5a19c706055d4bc212fdfc5101d23025b03d3bfdaad4
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Filesize
10.8MB
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Filesize
1.1MB
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Filesize
64KB
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Filesize
10.8MB
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Filesize
4KB
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Filesize
64KB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
64KB