Analysis
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max time kernel
120s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
27/03/2025, 04:49
Behavioral task
behavioral1
Sample
Ransomware.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Ransomware.exe
Resource
win10v2004-20250314-en
General
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Target
Ransomware.exe
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Size
77KB
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MD5
559b0d30b7bbf2d514c01e275fadbc90
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SHA1
25f2a1d11717d9127ced536d89caeb0c54edad26
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SHA256
d196d67dbaa312f08d963d404d4237eed1cbb708168f732893dbf91d85d3d493
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SHA512
ac3e6b24416812f2cdf54f1131d5235ce47481bd5336029f6ff1dd4b292eba33d1c33c07949c0f197166bc438fad66a773aebc989d31a4d65d2c86e449d89727
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SSDEEP
1536:5Ni6hsq9licc1/auzQX3unCfjiKG19ukYlUSaL7TOiwjJ:uisq9l/cVMTi1skYlURPR6J
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\SPECTRARANSOMWARE.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/2208-1-0x0000000000DE0000-0x0000000000DFA000-memory.dmp family_chaos behavioral1/files/0x0003000000011c28-6.dat family_chaos behavioral1/memory/2112-9-0x0000000000BE0000-0x0000000000BFA000-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 1080 bcdedit.exe 1936 bcdedit.exe -
pid Process 1340 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\SPECTRARANSOMWARE.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2112 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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\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\Feeds Cache\39RANI6K\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\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\Windows\Temporary Internet Files\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\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\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System 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\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\T1DP8V76\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\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\AQYH36ZT\desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\BY17T927\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\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\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\MT4W94IX\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\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\Desktop\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\Tablet PC\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 for United States\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\Local\Microsoft\Windows\History\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\UGWF8QWZ\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\Desktop\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\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini svchost.exe 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\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\Sample Media\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\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\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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\Videos\Sample Videos\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ezq2n0dqb.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 2756 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2024 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 2208 Ransomware.exe 2112 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2208 Ransomware.exe 2208 Ransomware.exe 2208 Ransomware.exe 2112 svchost.exe 2112 svchost.exe 2112 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2208 Ransomware.exe Token: SeDebugPrivilege 2112 svchost.exe Token: SeBackupPrivilege 2584 vssvc.exe Token: SeRestorePrivilege 2584 vssvc.exe Token: SeAuditPrivilege 2584 vssvc.exe Token: SeIncreaseQuotaPrivilege 1412 WMIC.exe Token: SeSecurityPrivilege 1412 WMIC.exe Token: SeTakeOwnershipPrivilege 1412 WMIC.exe Token: SeLoadDriverPrivilege 1412 WMIC.exe Token: SeSystemProfilePrivilege 1412 WMIC.exe Token: SeSystemtimePrivilege 1412 WMIC.exe Token: SeProfSingleProcessPrivilege 1412 WMIC.exe Token: SeIncBasePriorityPrivilege 1412 WMIC.exe Token: SeCreatePagefilePrivilege 1412 WMIC.exe Token: SeBackupPrivilege 1412 WMIC.exe Token: SeRestorePrivilege 1412 WMIC.exe Token: SeShutdownPrivilege 1412 WMIC.exe Token: SeDebugPrivilege 1412 WMIC.exe Token: SeSystemEnvironmentPrivilege 1412 WMIC.exe Token: SeRemoteShutdownPrivilege 1412 WMIC.exe Token: SeUndockPrivilege 1412 WMIC.exe Token: SeManageVolumePrivilege 1412 WMIC.exe Token: 33 1412 WMIC.exe Token: 34 1412 WMIC.exe Token: 35 1412 WMIC.exe Token: SeIncreaseQuotaPrivilege 1412 WMIC.exe Token: SeSecurityPrivilege 1412 WMIC.exe Token: SeTakeOwnershipPrivilege 1412 WMIC.exe Token: SeLoadDriverPrivilege 1412 WMIC.exe Token: SeSystemProfilePrivilege 1412 WMIC.exe Token: SeSystemtimePrivilege 1412 WMIC.exe Token: SeProfSingleProcessPrivilege 1412 WMIC.exe Token: SeIncBasePriorityPrivilege 1412 WMIC.exe Token: SeCreatePagefilePrivilege 1412 WMIC.exe Token: SeBackupPrivilege 1412 WMIC.exe Token: SeRestorePrivilege 1412 WMIC.exe Token: SeShutdownPrivilege 1412 WMIC.exe Token: SeDebugPrivilege 1412 WMIC.exe Token: SeSystemEnvironmentPrivilege 1412 WMIC.exe Token: SeRemoteShutdownPrivilege 1412 WMIC.exe Token: SeUndockPrivilege 1412 WMIC.exe Token: SeManageVolumePrivilege 1412 WMIC.exe Token: 33 1412 WMIC.exe Token: 34 1412 WMIC.exe Token: 35 1412 WMIC.exe Token: SeBackupPrivilege 764 wbengine.exe Token: SeRestorePrivilege 764 wbengine.exe Token: SeSecurityPrivilege 764 wbengine.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2024 NOTEPAD.EXE -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2208 wrote to memory of 2112 2208 Ransomware.exe 30 PID 2208 wrote to memory of 2112 2208 Ransomware.exe 30 PID 2208 wrote to memory of 2112 2208 Ransomware.exe 30 PID 2112 wrote to memory of 2812 2112 svchost.exe 31 PID 2112 wrote to memory of 2812 2112 svchost.exe 31 PID 2112 wrote to memory of 2812 2112 svchost.exe 31 PID 2812 wrote to memory of 2756 2812 cmd.exe 33 PID 2812 wrote to memory of 2756 2812 cmd.exe 33 PID 2812 wrote to memory of 2756 2812 cmd.exe 33 PID 2812 wrote to memory of 1412 2812 cmd.exe 36 PID 2812 wrote to memory of 1412 2812 cmd.exe 36 PID 2812 wrote to memory of 1412 2812 cmd.exe 36 PID 2112 wrote to memory of 2472 2112 svchost.exe 38 PID 2112 wrote to memory of 2472 2112 svchost.exe 38 PID 2112 wrote to memory of 2472 2112 svchost.exe 38 PID 2472 wrote to memory of 1080 2472 cmd.exe 40 PID 2472 wrote to memory of 1080 2472 cmd.exe 40 PID 2472 wrote to memory of 1080 2472 cmd.exe 40 PID 2472 wrote to memory of 1936 2472 cmd.exe 41 PID 2472 wrote to memory of 1936 2472 cmd.exe 41 PID 2472 wrote to memory of 1936 2472 cmd.exe 41 PID 2112 wrote to memory of 2056 2112 svchost.exe 42 PID 2112 wrote to memory of 2056 2112 svchost.exe 42 PID 2112 wrote to memory of 2056 2112 svchost.exe 42 PID 2056 wrote to memory of 1340 2056 cmd.exe 44 PID 2056 wrote to memory of 1340 2056 cmd.exe 44 PID 2056 wrote to memory of 1340 2056 cmd.exe 44 PID 2112 wrote to memory of 2024 2112 svchost.exe 49 PID 2112 wrote to memory of 2024 2112 svchost.exe 49 PID 2112 wrote to memory of 2024 2112 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\Ransomware.exe"C:\Users\Admin\AppData\Local\Temp\Ransomware.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2208 -
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:2112 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2812 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2756
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1412
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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:2472 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1080
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1936
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2056 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1340
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\SPECTRARANSOMWARE.txt3⤵
- Opens file in notepad (likely ransom note)
- Suspicious use of FindShellTrayWindow
PID:2024
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2584
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:764
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:444
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2084
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2KB
MD54203f97be5cb713003dbf23a880f5eaa
SHA14c2484d42cf32442f54df672a352596c88350d01
SHA256da85ae8957301fd1095c9a52b2d6a6e43b24393696f99dc359440a726fe33eb1
SHA5124041df6a662ad9915bc5e0f038fda046954c16b703975e4b2d8a4ec10db0b39ed08d6d12c91b13ad1e5a40e836a7806e7b060355b4ec3b11822ab93f46be0212
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Filesize
77KB
MD5559b0d30b7bbf2d514c01e275fadbc90
SHA125f2a1d11717d9127ced536d89caeb0c54edad26
SHA256d196d67dbaa312f08d963d404d4237eed1cbb708168f732893dbf91d85d3d493
SHA512ac3e6b24416812f2cdf54f1131d5235ce47481bd5336029f6ff1dd4b292eba33d1c33c07949c0f197166bc438fad66a773aebc989d31a4d65d2c86e449d89727
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0