Analysis
- max time kernel
149s - max time network
137s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
07/11/2026, 19:55
Behavioral task
behavioral1
Sample
killer.exe
Resource
win10v2004-20260911-en
Behavioral task
behavioral2
Sample
killer.exe
Resource
win11ltsc2024-20260911-en
General
- Target killer.exe
- Size 22KB
- Sample261107-ynbx2a1vfx
- SHA256 be6eea912213bb03411f7ed2dc3b26268e80f558c8e5ceea0ebcb628b3070a87
- MD5 941f88696e203c200feaea0ef388bf48
- SHA1 ef2112495d7a84fd9e2a69aa1dff4ad200a31ffb
- SHA512 fa25caa8aa1eeaef8f1bfae95b6f60566112a264353738fc98ff9b342ed7a84ae19c04520df23773392ef99241640f336e8cfad9368f3c494a046b9f58b17d89
- SSDEEP 384:s3MLWHn3kI3fcSxlR2WpkXsQoZdtKXR6J1r91Czxb5Ie5:kn3kIE69pkN2fKXR+1r9ixbue5
- TLSH T1A9A2D50867FA4A39F7FF2F786DB251505775B953EC3EDB4D188A004D0922B8CCA60B66
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
-
C:\Users\Admin\Contacts\read_it.txt
-
chaos
- ----> Chaos is multi language ransomware. Translate your note to any language <---- All of your files have been encrypted Your computer was infected with a ransomware virus. Your files have been encrypted and you won't be able to decrypt them without our help.What can I do to get my files back?You can buy our special decryption software, this software will allow you to recover all of your data and remove the ransomware from your computer.The price for the software is $1,500. Payment can be made in Bitcoin only. How do I pay, where do I get Bitcoin? Purchasing Bitcoin varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin. Many of our customers have reported these sites to be fast and reliable: Coinmama - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com Payment informationAmount: 0.1473766 BTC Bitcoin Address: bc1qlnzcep4l4ac0ttdrq7awxev9ehu465f2vpt9x0
Signatures
- Family: Chaos
Ransomware family first seen in June 2021.
- Chaos Ransomware 2 IoCs
resource yara_rule behavioral2/memory/676-0-0x0000000000610000-0x000000000061C000-memory.dmp family_chaos behavioral2/files/0x0004000000016b4d-7.dat family_chaos - Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
- Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 4712 bcdedit.exe 3008 bcdedit.exe -
pid Process 4308 wbadmin.exe - Creates a file in the Startup directory 1 TTPs 3 IoCs
A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.
description 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 a file named after a Windows system binary 1 TTPs 2 IoCs
The file runs from a user directory while carrying the name of an executable that normally only exists in System32.
description ioc Process File opened (read-only) C:\Users\Admin\AppData\Roaming\svchost.exe killer.exe File opened (read-only) C:\Users\Admin\AppData\Roaming\svchost.exe svchost.exe - Executes dropped EXE 1 IoCs
pid Process 4252 svchost.exe - Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Drops desktop.ini file(s) 31 IoCs
description ioc Process File opened for modification C:\Users\Admin\Videos\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\Accessibility\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\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\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\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\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\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\AppData\Roaming\Microsoft\Windows\Libraries\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 F:\$RECYCLE.BIN\S-1-5-21-1404337215-1550464601-2805570857-1000\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\SendTo\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\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\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\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 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 3 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 3020 cmd.exe 2632 cmd.exe 3320 cmd.exe - Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname WMIC.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain WMIC.exe - Checks SCSI registry key(s) 3 TTPs 4 IoCs
SCSI information is often read in order to detect sandboxing environments.
description 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_DADY&PROD_HL-DT-ST_DVD+-RW\4&215468A5&0&010000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\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.
pid Process 4440 vssadmin.exe - Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1404337215-1550464601-2805570857-1000_Classes\Local Settings svchost.exe - Opens file in notepad (likely ransom note) 1 IoCs
pid Process 4080 NOTEPAD.EXE - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4252 svchost.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 676 killer.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4252 svchost.exe 4544 WMIC.exe - Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 676 killer.exe Token: SeDebugPrivilege 4252 svchost.exe Token: SeBackupPrivilege 3872 vssvc.exe Token: SeRestorePrivilege 3872 vssvc.exe Token: SeAuditPrivilege 3872 vssvc.exe Token: SeIncreaseQuotaPrivilege 4544 WMIC.exe Token: SeSecurityPrivilege 4544 WMIC.exe Token: SeTakeOwnershipPrivilege 4544 WMIC.exe Token: SeLoadDriverPrivilege 4544 WMIC.exe Token: SeSystemProfilePrivilege 4544 WMIC.exe Token: SeSystemtimePrivilege 4544 WMIC.exe Token: SeProfSingleProcessPrivilege 4544 WMIC.exe Token: SeIncBasePriorityPrivilege 4544 WMIC.exe Token: SeCreatePagefilePrivilege 4544 WMIC.exe Token: SeBackupPrivilege 4544 WMIC.exe Token: SeRestorePrivilege 4544 WMIC.exe Token: SeShutdownPrivilege 4544 WMIC.exe Token: SeDebugPrivilege 4544 WMIC.exe Token: SeSystemEnvironmentPrivilege 4544 WMIC.exe Token: SeRemoteShutdownPrivilege 4544 WMIC.exe Token: SeUndockPrivilege 4544 WMIC.exe Token: SeManageVolumePrivilege 4544 WMIC.exe Token: 33 4544 WMIC.exe Token: 34 4544 WMIC.exe Token: 35 4544 WMIC.exe Token: 36 4544 WMIC.exe Token: SeIncreaseQuotaPrivilege 4544 WMIC.exe Token: SeSecurityPrivilege 4544 WMIC.exe Token: SeTakeOwnershipPrivilege 4544 WMIC.exe Token: SeLoadDriverPrivilege 4544 WMIC.exe Token: SeSystemProfilePrivilege 4544 WMIC.exe Token: SeSystemtimePrivilege 4544 WMIC.exe Token: SeProfSingleProcessPrivilege 4544 WMIC.exe Token: SeIncBasePriorityPrivilege 4544 WMIC.exe Token: SeCreatePagefilePrivilege 4544 WMIC.exe Token: SeBackupPrivilege 4544 WMIC.exe Token: SeRestorePrivilege 4544 WMIC.exe Token: SeShutdownPrivilege 4544 WMIC.exe Token: SeDebugPrivilege 4544 WMIC.exe Token: SeSystemEnvironmentPrivilege 4544 WMIC.exe Token: SeRemoteShutdownPrivilege 4544 WMIC.exe Token: SeUndockPrivilege 4544 WMIC.exe Token: SeManageVolumePrivilege 4544 WMIC.exe Token: 33 4544 WMIC.exe Token: 34 4544 WMIC.exe Token: 35 4544 WMIC.exe Token: 36 4544 WMIC.exe Token: SeBackupPrivilege 1320 wbengine.exe Token: SeRestorePrivilege 1320 wbengine.exe Token: SeSecurityPrivilege 1320 wbengine.exe - Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 676 wrote to memory of 4252 676 killer.exe 89 PID 4252 wrote to memory of 3020 4252 svchost.exe 90 PID 3020 wrote to memory of 4440 3020 cmd.exe 92 PID 3020 wrote to memory of 4544 3020 cmd.exe 95 PID 4252 wrote to memory of 2632 4252 svchost.exe 97 PID 2632 wrote to memory of 4712 2632 cmd.exe 99 PID 2632 wrote to memory of 3008 2632 cmd.exe 100 PID 4252 wrote to memory of 3320 4252 svchost.exe 101 PID 3320 wrote to memory of 4308 3320 cmd.exe 103 PID 4252 wrote to memory of 4080 4252 svchost.exe 108 - 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.
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Users\Admin\AppData\Local\Temp\killer.exe"C:\Users\Admin\AppData\Local\Temp\killer.exe"1⤵
- Executes a file named after a Windows system binary
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:676 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Creates a file in the Startup directory
- Executes a file named after a Windows system binary
- Executes dropped EXE
- Drops desktop.ini file(s)
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4252 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:3020 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4440
-
-
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Reads the TCP/IP host and domain name from the registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4544
-
-
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no3⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:2632 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:4712
-
-
C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:3008
-
-
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:3320 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:4308
-
-
-
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:4080
-
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3872
-
C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1320
-
C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:3304
-
C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:4380
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2Windows Command Shell
1Windows Management Instrumentation
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Masquerading
1Match Legitimate Name or Location
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Roaming\svchost.exe
- Size 22KB
- SHA256 be6eea912213bb03411f7ed2dc3b26268e80f558c8e5ceea0ebcb628b3070a87
- MD5 941f88696e203c200feaea0ef388bf48
- SHA1 ef2112495d7a84fd9e2a69aa1dff4ad200a31ffb
- SHA512 fa25caa8aa1eeaef8f1bfae95b6f60566112a264353738fc98ff9b342ed7a84ae19c04520df23773392ef99241640f336e8cfad9368f3c494a046b9f58b17d89
- SSDEEP 384:s3MLWHn3kI3fcSxlR2WpkXsQoZdtKXR6J1r91Czxb5Ie5:kn3kIE69pkN2fKXR+1r9ixbue5
- TLSH T1A9A2D50867FA4A39F7FF2F786DB251505775B953EC3EDB4D188A004D0922B8CCA60B66
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\Contacts\read_it.txt
- Size 964B
- SHA256 7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
- MD5 4217b8b83ce3c3f70029a056546f8fd0
- SHA1 487cdb5733d073a0427418888e8f7070fe782a03
- SHA512 2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740
- TLSH T10711E11FBB99520A11B0A38073AD9061FE07775CC5668F999C9ED33453E1B1A08F883D
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\Downloads\read_it.txt
- Size 964B
- SHA256 7d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
- MD5 4217b8b83ce3c3f70029a056546f8fd0
- SHA1 487cdb5733d073a0427418888e8f7070fe782a03
- SHA512 2a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740
- TLSH T10711E11FBB99520A11B0A38073AD9061FE07775CC5668F999C9ED33453E1B1A08F883D
- MD5 SHA1 SHA512 TLSH