Analysis
-
max time kernel
122s -
max time network
130s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
24-10-2024 20:16
Behavioral task
behavioral1
Sample
2b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
2b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00.exe
Resource
win10v2004-20241007-en
General
-
Target
2b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00.exe
-
Size
345KB
-
MD5
87dd1c2224ef79ce8fce59caa0bb1964
-
SHA1
b183d956eb2fab6ece59fd9768b78f0ab172979a
-
SHA256
2b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00
-
SHA512
d0c1036023b004d58052526892d35d726eb37035fc3e1a2803db628fcd20708b9da32501057655e134e50707e59729f7181d386f3b2b81187de0f5955a9efcce
-
SSDEEP
6144:KYBTq90cteSShbS9cYbNYuXjaPNIqWAPk+O7HkXK6k:KYBDcteSSNS9cGMSqWAPk+Orkk
Malware Config
Signatures
-
Chaos
Ransomware family first seen in June 2021.
-
Chaos Ransomware 3 IoCs
resource yara_rule behavioral1/memory/2064-1-0x0000000001130000-0x000000000118C000-memory.dmp family_chaos behavioral1/files/0x00090000000167e3-6.dat family_chaos behavioral1/memory/1320-8-0x00000000001C0000-0x000000000021C000-memory.dmp 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 884 bcdedit.exe 1700 bcdedit.exe -
pid Process 1036 wbadmin.exe -
Disables Task Manager via registry modification
-
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 1320 svchost.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\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\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\5O2ZS8DL\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\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\AppData\Local\Microsoft\Feeds Cache\1U7Y9BT8\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\All Users\Microsoft\Windows\Start Menu\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\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\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\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\4TDQSVWU\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\BBWU148F\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\Accessories\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\G0UQMQ1C\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\Local\Microsoft\Feeds Cache\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\ADWO43R6\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\Games\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3692679935-4019334568-335155002-1000\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\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\All Users\Microsoft\Windows\Ringtones\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\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\SEGJVAZC\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\Programs\Administrative Tools\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\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\4KNYJNXZ\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\All Users\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\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\Saved Games\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\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\History\History.IE5\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\Public\Music\Sample Music\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\Sample Pictures\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\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\so8ou87dw.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2156 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1736 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 2064 2b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00.exe 1320 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2064 2b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00.exe 2064 2b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00.exe 2064 2b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00.exe 1320 svchost.exe 1320 svchost.exe 1320 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2064 2b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00.exe Token: SeDebugPrivilege 1320 svchost.exe Token: SeBackupPrivilege 2792 vssvc.exe Token: SeRestorePrivilege 2792 vssvc.exe Token: SeAuditPrivilege 2792 vssvc.exe Token: SeIncreaseQuotaPrivilege 2704 WMIC.exe Token: SeSecurityPrivilege 2704 WMIC.exe Token: SeTakeOwnershipPrivilege 2704 WMIC.exe Token: SeLoadDriverPrivilege 2704 WMIC.exe Token: SeSystemProfilePrivilege 2704 WMIC.exe Token: SeSystemtimePrivilege 2704 WMIC.exe Token: SeProfSingleProcessPrivilege 2704 WMIC.exe Token: SeIncBasePriorityPrivilege 2704 WMIC.exe Token: SeCreatePagefilePrivilege 2704 WMIC.exe Token: SeBackupPrivilege 2704 WMIC.exe Token: SeRestorePrivilege 2704 WMIC.exe Token: SeShutdownPrivilege 2704 WMIC.exe Token: SeDebugPrivilege 2704 WMIC.exe Token: SeSystemEnvironmentPrivilege 2704 WMIC.exe Token: SeRemoteShutdownPrivilege 2704 WMIC.exe Token: SeUndockPrivilege 2704 WMIC.exe Token: SeManageVolumePrivilege 2704 WMIC.exe Token: 33 2704 WMIC.exe Token: 34 2704 WMIC.exe Token: 35 2704 WMIC.exe Token: SeIncreaseQuotaPrivilege 2704 WMIC.exe Token: SeSecurityPrivilege 2704 WMIC.exe Token: SeTakeOwnershipPrivilege 2704 WMIC.exe Token: SeLoadDriverPrivilege 2704 WMIC.exe Token: SeSystemProfilePrivilege 2704 WMIC.exe Token: SeSystemtimePrivilege 2704 WMIC.exe Token: SeProfSingleProcessPrivilege 2704 WMIC.exe Token: SeIncBasePriorityPrivilege 2704 WMIC.exe Token: SeCreatePagefilePrivilege 2704 WMIC.exe Token: SeBackupPrivilege 2704 WMIC.exe Token: SeRestorePrivilege 2704 WMIC.exe Token: SeShutdownPrivilege 2704 WMIC.exe Token: SeDebugPrivilege 2704 WMIC.exe Token: SeSystemEnvironmentPrivilege 2704 WMIC.exe Token: SeRemoteShutdownPrivilege 2704 WMIC.exe Token: SeUndockPrivilege 2704 WMIC.exe Token: SeManageVolumePrivilege 2704 WMIC.exe Token: 33 2704 WMIC.exe Token: 34 2704 WMIC.exe Token: 35 2704 WMIC.exe Token: SeBackupPrivilege 624 wbengine.exe Token: SeRestorePrivilege 624 wbengine.exe Token: SeSecurityPrivilege 624 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2064 wrote to memory of 1320 2064 2b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00.exe 30 PID 2064 wrote to memory of 1320 2064 2b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00.exe 30 PID 2064 wrote to memory of 1320 2064 2b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00.exe 30 PID 1320 wrote to memory of 2164 1320 svchost.exe 31 PID 1320 wrote to memory of 2164 1320 svchost.exe 31 PID 1320 wrote to memory of 2164 1320 svchost.exe 31 PID 2164 wrote to memory of 2156 2164 cmd.exe 33 PID 2164 wrote to memory of 2156 2164 cmd.exe 33 PID 2164 wrote to memory of 2156 2164 cmd.exe 33 PID 2164 wrote to memory of 2704 2164 cmd.exe 37 PID 2164 wrote to memory of 2704 2164 cmd.exe 37 PID 2164 wrote to memory of 2704 2164 cmd.exe 37 PID 1320 wrote to memory of 1804 1320 svchost.exe 39 PID 1320 wrote to memory of 1804 1320 svchost.exe 39 PID 1320 wrote to memory of 1804 1320 svchost.exe 39 PID 1804 wrote to memory of 884 1804 cmd.exe 41 PID 1804 wrote to memory of 884 1804 cmd.exe 41 PID 1804 wrote to memory of 884 1804 cmd.exe 41 PID 1804 wrote to memory of 1700 1804 cmd.exe 42 PID 1804 wrote to memory of 1700 1804 cmd.exe 42 PID 1804 wrote to memory of 1700 1804 cmd.exe 42 PID 1320 wrote to memory of 2840 1320 svchost.exe 43 PID 1320 wrote to memory of 2840 1320 svchost.exe 43 PID 1320 wrote to memory of 2840 1320 svchost.exe 43 PID 2840 wrote to memory of 1036 2840 cmd.exe 45 PID 2840 wrote to memory of 1036 2840 cmd.exe 45 PID 2840 wrote to memory of 1036 2840 cmd.exe 45 PID 1320 wrote to memory of 1736 1320 svchost.exe 50 PID 1320 wrote to memory of 1736 1320 svchost.exe 50 PID 1320 wrote to memory of 1736 1320 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.
-
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\2b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00.exe"C:\Users\Admin\AppData\Local\Temp\2b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2064 -
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:1320 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2164 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2156
-
-
C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2704
-
-
-
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:1804 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:884
-
-
C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1700
-
-
-
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2840 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1036
-
-
-
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:1736
-
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2792
-
C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:624
-
C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1784
-
C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2640
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
-
Filesize
444B
MD5bb2131832fedf1c488c24edb27744a92
SHA14e393d9298d6a44ab95549c429f2dfb0c4110832
SHA2567502aba20d7ae9b7bdfdf5c699c723acfa28ec2fc5ecb9da88f499538bba6378
SHA5120dd7273795a6fb860325c011ff988e996ccc06ab3d6767ad90b49bf136751970489a80fecaef9479a3fd2b6e1dce4e55aa1f66cb489262425e5971464a0ef7e6
-
Filesize
345KB
MD587dd1c2224ef79ce8fce59caa0bb1964
SHA1b183d956eb2fab6ece59fd9768b78f0ab172979a
SHA2562b693de1eba37e3b56c1c989a5906dab23526cad9873e400532a66a75e8e9d00
SHA512d0c1036023b004d58052526892d35d726eb37035fc3e1a2803db628fcd20708b9da32501057655e134e50707e59729f7181d386f3b2b81187de0f5955a9efcce
-
Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0