Analysis Overview
SHA256
d048804223a758e7a90b9a65bc452c8eb05d6fc8f5b33618f8783e6c53af2730
Threat Level: Known bad
The file speakerwoman.exe was found to be: Known bad.
Malicious Activity Summary
Chaos
Chaos family
Chaos Ransomware
Drops startup file
Reads user/profile data of web browsers
Checks computer location settings
Executes dropped EXE
Drops desktop.ini file(s)
Sets desktop wallpaper using registry
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious use of SendNotifyMessage
Suspicious use of FindShellTrayWindow
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: GetForegroundWindowSpam
Opens file in notepad (likely ransom note)
Modifies registry class
Enumerates system info in registry
Modifies data under HKEY_USERS
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-04 17:15
Signatures
Chaos Ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Chaos family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-04 17:15
Reported
2024-03-04 17:17
Platform
win7-20240215-en
Max time kernel
95s
Max time network
45s
Command Line
Signatures
Chaos
Chaos Ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Reads user/profile data of web browsers
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | C:\Users\Public\Videos\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Desktop\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Favorites\Links for United States\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Documents\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Desktop\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | F:\$RECYCLE.BIN\S-1-5-21-2248906074-2862704502-246302768-1000\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Downloads\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Saved Games\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Documents\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Favorites\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Music\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Music\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Pictures\Sample Pictures\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Searches\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Contacts\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Favorites\Links\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Music\Sample Music\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Videos\Sample Videos\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Links\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Videos\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Pictures\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\bdzgr4819.jpg" | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Enumerates physical storage devices
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1 | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0\Identifier | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0\Configuration Data | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\Configuration Data | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\Component Information | C:\Windows\system32\csrss.exe | N/A |
| Key enumerated | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\Component Information | C:\Windows\system32\csrss.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\1\KeyboardController | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2\Identifier | C:\Windows\system32\csrss.exe | N/A |
| Key queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2 | C:\Windows\system32\csrss.exe | N/A |
| Key queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter | C:\Windows\system32\csrss.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController | C:\Windows\system32\csrss.exe | N/A |
| Key queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController | C:\Windows\system32\csrss.exe | N/A |
| Key queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\Identifier | C:\Windows\system32\csrss.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0 | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\Identifier | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\Configuration Data | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1\Component Information | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2\Configuration Data | C:\Windows\system32\csrss.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter | C:\Windows\system32\csrss.exe | N/A |
| Key enumerated | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0 | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1\Configuration Data | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0\Component Information | C:\Windows\system32\csrss.exe | N/A |
| Key queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1 | C:\Windows\system32\csrss.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2 | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2\Component Information | C:\Windows\system32\csrss.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral | C:\Windows\system32\csrss.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0 | C:\Windows\system32\csrss.exe | N/A |
| Key queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0 | C:\Windows\system32\csrss.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1\Identifier | C:\Windows\system32\csrss.exe | N/A |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController\0 | C:\Windows\system32\csrss.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\ColorName = "NormalColor" | C:\Windows\system32\winlogon.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\LoadedBefore = "1" | C:\Windows\system32\winlogon.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\LastUserLangID = "1033" | C:\Windows\system32\winlogon.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\LastLoadedDPI = "96" | C:\Windows\system32\winlogon.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\DllName = "%SystemRoot%\\resources\\themes\\Aero\\Aero.msstyles" | C:\Windows\system32\winlogon.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\SizeName = "NormalSize" | C:\Windows\system32\winlogon.exe | N/A |
| Set value (data) | \REGISTRY\USER\.DEFAULT\Control Panel\Desktop\MuiCached\MachinePreferredUILanguages = 65006e002d00550053000000 | C:\Windows\system32\winlogon.exe | N/A |
| Key created | \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\ThemeManager | C:\Windows\system32\winlogon.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\ThemeActive = "1" | C:\Windows\system32\winlogon.exe | N/A |
Opens file in notepad (likely ransom note)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\NOTEPAD.EXE | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\LogonUI.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\LogonUI.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Windows\system32\winlogon.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\system32\winlogon.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Windows\system32\winlogon.exe | N/A |
| Token: SeTcbPrivilege | N/A | C:\Windows\system32\winlogon.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\LogonUI.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Windows\system32\winlogon.exe | N/A |
| Token: SeBackupPrivilege | N/A | C:\Windows\system32\winlogon.exe | N/A |
| Token: SeSecurityPrivilege | N/A | C:\Windows\system32\winlogon.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\LogonUI.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\LogonUI.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\LogonUI.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\LogonUI.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\system32\LogonUI.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe
"C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe"
C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
C:\Users\Admin\AppData\Local\Temp\ose00000.exe
"C:\Users\Admin\AppData\Local\Temp\ose00000.exe"
C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe
"C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe"
C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
C:\Windows\system32\csrss.exe
%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
C:\Windows\system32\winlogon.exe
winlogon.exe
C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
Network
Files
memory/2700-0-0x00000000001C0000-0x00000000001F0000-memory.dmp
memory/2700-1-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp
C:\Users\Admin\AppData\Roaming\svchost.exe
| MD5 | 09cd7152db837a6b1ec65dd6bf99cce9 |
| SHA1 | 1591282093b637060d1f542da93ccdcf660a6b0d |
| SHA256 | d048804223a758e7a90b9a65bc452c8eb05d6fc8f5b33618f8783e6c53af2730 |
| SHA512 | 293fc7f42d7b4fc3ba9db1925d2d3f7d9e9e99d382fb30f46e391f9b56125142321ac121f96e2303a6f23fd64b8c4d8de5a75a9e369e6f46ea23fc2fa3a8598a |
memory/2080-7-0x0000000000870000-0x00000000008A0000-memory.dmp
memory/2700-8-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp
memory/2080-9-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp
memory/2080-11-0x000000001AE60000-0x000000001AEE0000-memory.dmp
C:\Users\Admin\Documents\read_it.txt
| MD5 | 4217b8b83ce3c3f70029a056546f8fd0 |
| SHA1 | 487cdb5733d073a0427418888e8f7070fe782a03 |
| SHA256 | 7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121 |
| SHA512 | 2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740 |
memory/2080-451-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp
memory/2080-452-0x000000001AE60000-0x000000001AEE0000-memory.dmp
memory/576-453-0x0000000001160000-0x0000000001190000-memory.dmp
memory/576-454-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp
memory/2316-457-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp
memory/576-456-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp
memory/964-458-0x0000000140000000-0x00000001405E8000-memory.dmp
memory/964-459-0x0000000140000000-0x00000001405E8000-memory.dmp
memory/964-460-0x0000000000450000-0x0000000000451000-memory.dmp
memory/2080-461-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp
memory/2780-462-0x0000000002C30000-0x0000000002C31000-memory.dmp
memory/2316-463-0x000007FEF5D90000-0x000007FEF677C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-04 17:15
Reported
2024-03-04 17:17
Platform
win10v2004-20240226-en
Max time kernel
107s
Max time network
110s
Command Line
Signatures
Chaos
Chaos Ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Reads user/profile data of web browsers
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | C:\Users\Admin\Contacts\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\OneDrive\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Videos\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Music\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Videos\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Desktop\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Links\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Downloads\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\Camera Roll\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Pictures\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Saved Games\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | F:\$RECYCLE.BIN\S-1-5-21-566096764-1992588923-1249862864-1000\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Music\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Searches\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Documents\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Documents\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Favorites\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Pictures\Saved Pictures\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\Favorites\Links\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
| File opened for modification | C:\Users\Public\Desktop\desktop.ini | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\phq9kzosf.jpg" | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000_Classes\Local Settings | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Opens file in notepad (likely ransom note)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\NOTEPAD.EXE | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3528 wrote to memory of 216 | N/A | C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe | C:\Users\Admin\AppData\Roaming\svchost.exe |
| PID 3528 wrote to memory of 216 | N/A | C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe | C:\Users\Admin\AppData\Roaming\svchost.exe |
| PID 216 wrote to memory of 2024 | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | C:\Windows\system32\NOTEPAD.EXE |
| PID 216 wrote to memory of 2024 | N/A | C:\Users\Admin\AppData\Roaming\svchost.exe | C:\Windows\system32\NOTEPAD.EXE |
Processes
C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe
"C:\Users\Admin\AppData\Local\Temp\speakerwoman.exe"
C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\read_it.txt
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| NL | 52.142.223.178:80 | tcp | |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 175.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
Files
memory/3528-0-0x0000000000320000-0x0000000000350000-memory.dmp
memory/3528-1-0x00007FFA6F820000-0x00007FFA702E1000-memory.dmp
C:\Users\Admin\AppData\Roaming\svchost.exe
| MD5 | 09cd7152db837a6b1ec65dd6bf99cce9 |
| SHA1 | 1591282093b637060d1f542da93ccdcf660a6b0d |
| SHA256 | d048804223a758e7a90b9a65bc452c8eb05d6fc8f5b33618f8783e6c53af2730 |
| SHA512 | 293fc7f42d7b4fc3ba9db1925d2d3f7d9e9e99d382fb30f46e391f9b56125142321ac121f96e2303a6f23fd64b8c4d8de5a75a9e369e6f46ea23fc2fa3a8598a |
memory/3528-14-0x00007FFA6F820000-0x00007FFA702E1000-memory.dmp
memory/216-15-0x00007FFA6F820000-0x00007FFA702E1000-memory.dmp
C:\Users\Admin\Documents\read_it.txt
| MD5 | 4217b8b83ce3c3f70029a056546f8fd0 |
| SHA1 | 487cdb5733d073a0427418888e8f7070fe782a03 |
| SHA256 | 7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121 |
| SHA512 | 2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740 |
memory/216-458-0x00007FFA6F820000-0x00007FFA702E1000-memory.dmp