Analysis
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max time kernel
41s -
max time network
45s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
10-11-2024 23:37
Behavioral task
behavioral1
Sample
ransom.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
ransom.exe
Resource
win10v2004-20241007-en
Errors
General
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Target
ransom.exe
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Size
43KB
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MD5
aaea4f5c500eefc364887278b249f2c3
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SHA1
4b0561d911c0b6ebd656af498d9c1a57fe6f6347
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SHA256
24833a516b737c23c95033544877605e95b518e601290e3fd76609819d3c6c6e
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SHA512
2dafd50f3787886d6a4f444924c7d2228171cd0226d1d244f96887db6c74c84f25ce1ab39781fa28eb93d255838c37f63d00c2052157f28c76ce9ab334b76e43
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SSDEEP
768:Vn3kI1tGdpnN2fKXRATr9iS0vMzCPBM6QawagVj7j3XlzqWUBb3Jee:F3kI1tEwImTr9iS0vxJM6u7j3Jq55oe
Malware Config
Extracted
C:\Users\Admin\Desktop\read_it.txt
chaos
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
Processes:
resource yara_rule behavioral2/memory/996-0-0x0000000000AC0000-0x0000000000AD2000-memory.dmp family_chaos C:\Users\Admin\AppData\Roaming\svchost.exe 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
Processes:
bcdedit.exebcdedit.exepid process 2760 bcdedit.exe 4620 bcdedit.exe -
Processes:
wbadmin.exepid process 2524 wbadmin.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
ransom.exesvchost.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation ransom.exe Key value queried \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 3 IoCs
Processes:
svchost.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe 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
Processes:
svchost.exepid process 4444 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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Drops desktop.ini file(s) 34 IoCs
Processes:
svchost.exedescription ioc process File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\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\Public\Desktop\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\AccountPictures\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\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\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\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\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\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-493223053-2004649691-1575712786-1000\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\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\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\Pictures\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\m0fzbx1qh.jpg" svchost.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.
Processes:
vds.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\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 -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exepid process 2648 vssadmin.exe -
Modifies data under HKEY_USERS 15 IoCs
Processes:
LogonUI.exedescription ioc process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" LogonUI.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "234" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" LogonUI.exe -
Modifies registry class 1 IoCs
Processes:
svchost.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid process 2368 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
svchost.exepid process 4444 svchost.exe -
Suspicious behavior: EnumeratesProcesses 53 IoCs
Processes:
ransom.exesvchost.exepid process 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 996 ransom.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe 4444 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
Processes:
ransom.exesvchost.exevssvc.exeWMIC.exewbengine.exedescription pid process Token: SeDebugPrivilege 996 ransom.exe Token: SeDebugPrivilege 4444 svchost.exe Token: SeBackupPrivilege 684 vssvc.exe Token: SeRestorePrivilege 684 vssvc.exe Token: SeAuditPrivilege 684 vssvc.exe Token: SeIncreaseQuotaPrivilege 3756 WMIC.exe Token: SeSecurityPrivilege 3756 WMIC.exe Token: SeTakeOwnershipPrivilege 3756 WMIC.exe Token: SeLoadDriverPrivilege 3756 WMIC.exe Token: SeSystemProfilePrivilege 3756 WMIC.exe Token: SeSystemtimePrivilege 3756 WMIC.exe Token: SeProfSingleProcessPrivilege 3756 WMIC.exe Token: SeIncBasePriorityPrivilege 3756 WMIC.exe Token: SeCreatePagefilePrivilege 3756 WMIC.exe Token: SeBackupPrivilege 3756 WMIC.exe Token: SeRestorePrivilege 3756 WMIC.exe Token: SeShutdownPrivilege 3756 WMIC.exe Token: SeDebugPrivilege 3756 WMIC.exe Token: SeSystemEnvironmentPrivilege 3756 WMIC.exe Token: SeRemoteShutdownPrivilege 3756 WMIC.exe Token: SeUndockPrivilege 3756 WMIC.exe Token: SeManageVolumePrivilege 3756 WMIC.exe Token: 33 3756 WMIC.exe Token: 34 3756 WMIC.exe Token: 35 3756 WMIC.exe Token: 36 3756 WMIC.exe Token: SeIncreaseQuotaPrivilege 3756 WMIC.exe Token: SeSecurityPrivilege 3756 WMIC.exe Token: SeTakeOwnershipPrivilege 3756 WMIC.exe Token: SeLoadDriverPrivilege 3756 WMIC.exe Token: SeSystemProfilePrivilege 3756 WMIC.exe Token: SeSystemtimePrivilege 3756 WMIC.exe Token: SeProfSingleProcessPrivilege 3756 WMIC.exe Token: SeIncBasePriorityPrivilege 3756 WMIC.exe Token: SeCreatePagefilePrivilege 3756 WMIC.exe Token: SeBackupPrivilege 3756 WMIC.exe Token: SeRestorePrivilege 3756 WMIC.exe Token: SeShutdownPrivilege 3756 WMIC.exe Token: SeDebugPrivilege 3756 WMIC.exe Token: SeSystemEnvironmentPrivilege 3756 WMIC.exe Token: SeRemoteShutdownPrivilege 3756 WMIC.exe Token: SeUndockPrivilege 3756 WMIC.exe Token: SeManageVolumePrivilege 3756 WMIC.exe Token: 33 3756 WMIC.exe Token: 34 3756 WMIC.exe Token: 35 3756 WMIC.exe Token: 36 3756 WMIC.exe Token: SeBackupPrivilege 3220 wbengine.exe Token: SeRestorePrivilege 3220 wbengine.exe Token: SeSecurityPrivilege 3220 wbengine.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
LogonUI.exepid process 1016 LogonUI.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
ransom.exesvchost.execmd.execmd.execmd.exedescription pid process target process PID 996 wrote to memory of 4444 996 ransom.exe svchost.exe PID 996 wrote to memory of 4444 996 ransom.exe svchost.exe PID 4444 wrote to memory of 1112 4444 svchost.exe cmd.exe PID 4444 wrote to memory of 1112 4444 svchost.exe cmd.exe PID 1112 wrote to memory of 2648 1112 cmd.exe vssadmin.exe PID 1112 wrote to memory of 2648 1112 cmd.exe vssadmin.exe PID 1112 wrote to memory of 3756 1112 cmd.exe WMIC.exe PID 1112 wrote to memory of 3756 1112 cmd.exe WMIC.exe PID 4444 wrote to memory of 1348 4444 svchost.exe cmd.exe PID 4444 wrote to memory of 1348 4444 svchost.exe cmd.exe PID 1348 wrote to memory of 2760 1348 cmd.exe bcdedit.exe PID 1348 wrote to memory of 2760 1348 cmd.exe bcdedit.exe PID 1348 wrote to memory of 4620 1348 cmd.exe bcdedit.exe PID 1348 wrote to memory of 4620 1348 cmd.exe bcdedit.exe PID 4444 wrote to memory of 1016 4444 svchost.exe cmd.exe PID 4444 wrote to memory of 1016 4444 svchost.exe cmd.exe PID 1016 wrote to memory of 2524 1016 cmd.exe wbadmin.exe PID 1016 wrote to memory of 2524 1016 cmd.exe wbadmin.exe PID 4444 wrote to memory of 2368 4444 svchost.exe NOTEPAD.EXE PID 4444 wrote to memory of 2368 4444 svchost.exe NOTEPAD.EXE -
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\ransom.exe"C:\Users\Admin\AppData\Local\Temp\ransom.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:996 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.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:4444 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1112 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2648
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3756
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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:1348 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2760
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:4620
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1016 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2524
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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:2368
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:5052
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:684
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3220
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:748
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:3980
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C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x4 /state0:0xa388b855 /state1:0x41c64e6d1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:1016
Network
MITRE ATT&CK Enterprise v15
Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
43KB
MD5aaea4f5c500eefc364887278b249f2c3
SHA14b0561d911c0b6ebd656af498d9c1a57fe6f6347
SHA25624833a516b737c23c95033544877605e95b518e601290e3fd76609819d3c6c6e
SHA5122dafd50f3787886d6a4f444924c7d2228171cd0226d1d244f96887db6c74c84f25ce1ab39781fa28eb93d255838c37f63d00c2052157f28c76ce9ab334b76e43
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740