Analysis
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max time kernel
120s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
24-12-2024 22:12
Behavioral task
behavioral1
Sample
Xeno_Exec.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
Xeno_Exec.exe
Resource
win10v2004-20241007-en
General
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Target
Xeno_Exec.exe
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Size
5.4MB
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MD5
d8adc7b5885b14d5125bb9b10e0b32f2
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SHA1
0639fbeb424dfd244ed87a9950482fa22de1564e
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SHA256
145628cc523376793c93e65994ecc6c509bf107783892d2ca7a39766d150daec
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SHA512
2493a37fb69cef034428758c93c127da7faecea4ece03cf33fe462dd1cfba43375bdce2a23a09bed605cc4a7ac278a4a94b73e4947ca314e039398e085a5a7b6
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SSDEEP
49152:iuKIx29kk3sN2rEt/U964aKjSEvoYY+A2N:
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/1800-1-0x00000000009B0000-0x0000000000F1E000-memory.dmp family_chaos behavioral1/files/0x0012000000015ccc-6.dat family_chaos behavioral1/memory/1400-8-0x00000000002E0000-0x000000000084E000-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 1380 bcdedit.exe 1304 bcdedit.exe -
pid Process 2604 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 1400 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-1-5-21-1488793075-819845221-1497111674-1000\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\Temporary Internet Files\Content.IE5\PG1T8SOQ\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\C1JHBK4W\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\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\Admin\AppData\Local\Microsoft\Feeds Cache\CW1M20CU\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\Saved Games\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\All Users\Microsoft\Windows\Start Menu\Programs\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\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Accessories\Windows PowerShell\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\Public\Music\Sample Music\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\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\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\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\Libraries\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\Games\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\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\All Users\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\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\Admin\Links\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\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\I618Z2Y3\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\N5RJMVSE\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ORIYJR4N\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\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\Desktop\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\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\Sample Videos\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\Favorites\Links\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\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\691RDNCS\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\Videos\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\Burn\Burn\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\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0i4njngqk.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 2640 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1864 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 1800 Xeno_Exec.exe 1400 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1800 Xeno_Exec.exe 1800 Xeno_Exec.exe 1800 Xeno_Exec.exe 1400 svchost.exe 1400 svchost.exe 1400 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 1800 Xeno_Exec.exe Token: SeDebugPrivilege 1400 svchost.exe Token: SeBackupPrivilege 2888 vssvc.exe Token: SeRestorePrivilege 2888 vssvc.exe Token: SeAuditPrivilege 2888 vssvc.exe Token: SeIncreaseQuotaPrivilege 2992 WMIC.exe Token: SeSecurityPrivilege 2992 WMIC.exe Token: SeTakeOwnershipPrivilege 2992 WMIC.exe Token: SeLoadDriverPrivilege 2992 WMIC.exe Token: SeSystemProfilePrivilege 2992 WMIC.exe Token: SeSystemtimePrivilege 2992 WMIC.exe Token: SeProfSingleProcessPrivilege 2992 WMIC.exe Token: SeIncBasePriorityPrivilege 2992 WMIC.exe Token: SeCreatePagefilePrivilege 2992 WMIC.exe Token: SeBackupPrivilege 2992 WMIC.exe Token: SeRestorePrivilege 2992 WMIC.exe Token: SeShutdownPrivilege 2992 WMIC.exe Token: SeDebugPrivilege 2992 WMIC.exe Token: SeSystemEnvironmentPrivilege 2992 WMIC.exe Token: SeRemoteShutdownPrivilege 2992 WMIC.exe Token: SeUndockPrivilege 2992 WMIC.exe Token: SeManageVolumePrivilege 2992 WMIC.exe Token: 33 2992 WMIC.exe Token: 34 2992 WMIC.exe Token: 35 2992 WMIC.exe Token: SeIncreaseQuotaPrivilege 2992 WMIC.exe Token: SeSecurityPrivilege 2992 WMIC.exe Token: SeTakeOwnershipPrivilege 2992 WMIC.exe Token: SeLoadDriverPrivilege 2992 WMIC.exe Token: SeSystemProfilePrivilege 2992 WMIC.exe Token: SeSystemtimePrivilege 2992 WMIC.exe Token: SeProfSingleProcessPrivilege 2992 WMIC.exe Token: SeIncBasePriorityPrivilege 2992 WMIC.exe Token: SeCreatePagefilePrivilege 2992 WMIC.exe Token: SeBackupPrivilege 2992 WMIC.exe Token: SeRestorePrivilege 2992 WMIC.exe Token: SeShutdownPrivilege 2992 WMIC.exe Token: SeDebugPrivilege 2992 WMIC.exe Token: SeSystemEnvironmentPrivilege 2992 WMIC.exe Token: SeRemoteShutdownPrivilege 2992 WMIC.exe Token: SeUndockPrivilege 2992 WMIC.exe Token: SeManageVolumePrivilege 2992 WMIC.exe Token: 33 2992 WMIC.exe Token: 34 2992 WMIC.exe Token: 35 2992 WMIC.exe Token: SeBackupPrivilege 1712 wbengine.exe Token: SeRestorePrivilege 1712 wbengine.exe Token: SeSecurityPrivilege 1712 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1800 wrote to memory of 1400 1800 Xeno_Exec.exe 31 PID 1800 wrote to memory of 1400 1800 Xeno_Exec.exe 31 PID 1800 wrote to memory of 1400 1800 Xeno_Exec.exe 31 PID 1400 wrote to memory of 2816 1400 svchost.exe 32 PID 1400 wrote to memory of 2816 1400 svchost.exe 32 PID 1400 wrote to memory of 2816 1400 svchost.exe 32 PID 2816 wrote to memory of 2640 2816 cmd.exe 34 PID 2816 wrote to memory of 2640 2816 cmd.exe 34 PID 2816 wrote to memory of 2640 2816 cmd.exe 34 PID 2816 wrote to memory of 2992 2816 cmd.exe 37 PID 2816 wrote to memory of 2992 2816 cmd.exe 37 PID 2816 wrote to memory of 2992 2816 cmd.exe 37 PID 1400 wrote to memory of 636 1400 svchost.exe 39 PID 1400 wrote to memory of 636 1400 svchost.exe 39 PID 1400 wrote to memory of 636 1400 svchost.exe 39 PID 636 wrote to memory of 1380 636 cmd.exe 41 PID 636 wrote to memory of 1380 636 cmd.exe 41 PID 636 wrote to memory of 1380 636 cmd.exe 41 PID 636 wrote to memory of 1304 636 cmd.exe 42 PID 636 wrote to memory of 1304 636 cmd.exe 42 PID 636 wrote to memory of 1304 636 cmd.exe 42 PID 1400 wrote to memory of 2760 1400 svchost.exe 43 PID 1400 wrote to memory of 2760 1400 svchost.exe 43 PID 1400 wrote to memory of 2760 1400 svchost.exe 43 PID 2760 wrote to memory of 2604 2760 cmd.exe 45 PID 2760 wrote to memory of 2604 2760 cmd.exe 45 PID 2760 wrote to memory of 2604 2760 cmd.exe 45 PID 1400 wrote to memory of 1864 1400 svchost.exe 50 PID 1400 wrote to memory of 1864 1400 svchost.exe 50 PID 1400 wrote to memory of 1864 1400 svchost.exe 50 -
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\Xeno_Exec.exe"C:\Users\Admin\AppData\Local\Temp\Xeno_Exec.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1800 -
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:1400 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2816 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2640
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2992
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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:636 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1380
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1304
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2760 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2604
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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:1864
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2888
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1712
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2596
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1928
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
29B
MD5d287b8a4abf6e115c3f2e1b74c753745
SHA1b327c995957d8396ab930a831be11b9d74313b4d
SHA256abcd00e914df4ebae71ebbd4a5d624dd21989d587afa07def4b08e1c231bbb77
SHA512b642755ec92ed60eb799f15de5d04a9301da31ed2aa35fb86e0a13ee1221c6eef0fd7b6b5c005ebd8706ba4a93fc59ec41b69d460d325b6efd228773df4a69a2
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Filesize
5.4MB
MD5d8adc7b5885b14d5125bb9b10e0b32f2
SHA10639fbeb424dfd244ed87a9950482fa22de1564e
SHA256145628cc523376793c93e65994ecc6c509bf107783892d2ca7a39766d150daec
SHA5122493a37fb69cef034428758c93c127da7faecea4ece03cf33fe462dd1cfba43375bdce2a23a09bed605cc4a7ac278a4a94b73e4947ca314e039398e085a5a7b6
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0