Analysis
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max time kernel
140s -
max time network
104s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
01-11-2024 21:37
Behavioral task
behavioral1
Sample
af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe
Resource
win10v2004-20241007-en
General
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Target
af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe
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Size
3.1MB
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MD5
3303698d5190201a3f6dd7f1118251e0
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SHA1
b7ef2c81d6ae8023ff811278ec3e5bfba8fd905d
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SHA256
af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55
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SHA512
7ee79e8be71b4f3f7e6c1678e5100484e774d445777adc8f744d782258fad7444a5cd775a8290fdaadd7ab95b3c5fdb2b10e644dc64daa340c770d34151293f4
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SSDEEP
24576:0wYAZ9hsTcbVPIw4OEezpOPoZzUt4MKom1W6USf5ZztnE/O/XZ/zhPw:zztbN5pZAJ0fJl8
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 2 IoCs
resource yara_rule behavioral2/memory/4756-1-0x0000000000C00000-0x0000000000F12000-memory.dmp family_chaos behavioral2/files/0x0012000000023b46-6.dat 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 1536 bcdedit.exe 1852 bcdedit.exe -
pid Process 1100 wbadmin.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 3 IoCs
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 dropped EXE 1 IoCs
pid Process 2560 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
description ioc Process 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\Accessibility\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\Pictures\Camera Roll\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\AccountPictures\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\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\Recent\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\Downloads\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\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\Public\Videos\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-4089630652-1596403869-279772308-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\OneDrive\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\Pictures\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 -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4f2bpvhfv.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.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\4&215468a5&0&010000\FriendlyName vds.exe 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 -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 3784 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1416 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2560 svchost.exe -
Suspicious behavior: EnumeratesProcesses 49 IoCs
pid Process 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe 2560 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe Token: SeDebugPrivilege 2560 svchost.exe Token: SeBackupPrivilege 64 vssvc.exe Token: SeRestorePrivilege 64 vssvc.exe Token: SeAuditPrivilege 64 vssvc.exe Token: SeIncreaseQuotaPrivilege 1612 WMIC.exe Token: SeSecurityPrivilege 1612 WMIC.exe Token: SeTakeOwnershipPrivilege 1612 WMIC.exe Token: SeLoadDriverPrivilege 1612 WMIC.exe Token: SeSystemProfilePrivilege 1612 WMIC.exe Token: SeSystemtimePrivilege 1612 WMIC.exe Token: SeProfSingleProcessPrivilege 1612 WMIC.exe Token: SeIncBasePriorityPrivilege 1612 WMIC.exe Token: SeCreatePagefilePrivilege 1612 WMIC.exe Token: SeBackupPrivilege 1612 WMIC.exe Token: SeRestorePrivilege 1612 WMIC.exe Token: SeShutdownPrivilege 1612 WMIC.exe Token: SeDebugPrivilege 1612 WMIC.exe Token: SeSystemEnvironmentPrivilege 1612 WMIC.exe Token: SeRemoteShutdownPrivilege 1612 WMIC.exe Token: SeUndockPrivilege 1612 WMIC.exe Token: SeManageVolumePrivilege 1612 WMIC.exe Token: 33 1612 WMIC.exe Token: 34 1612 WMIC.exe Token: 35 1612 WMIC.exe Token: 36 1612 WMIC.exe Token: SeIncreaseQuotaPrivilege 1612 WMIC.exe Token: SeSecurityPrivilege 1612 WMIC.exe Token: SeTakeOwnershipPrivilege 1612 WMIC.exe Token: SeLoadDriverPrivilege 1612 WMIC.exe Token: SeSystemProfilePrivilege 1612 WMIC.exe Token: SeSystemtimePrivilege 1612 WMIC.exe Token: SeProfSingleProcessPrivilege 1612 WMIC.exe Token: SeIncBasePriorityPrivilege 1612 WMIC.exe Token: SeCreatePagefilePrivilege 1612 WMIC.exe Token: SeBackupPrivilege 1612 WMIC.exe Token: SeRestorePrivilege 1612 WMIC.exe Token: SeShutdownPrivilege 1612 WMIC.exe Token: SeDebugPrivilege 1612 WMIC.exe Token: SeSystemEnvironmentPrivilege 1612 WMIC.exe Token: SeRemoteShutdownPrivilege 1612 WMIC.exe Token: SeUndockPrivilege 1612 WMIC.exe Token: SeManageVolumePrivilege 1612 WMIC.exe Token: 33 1612 WMIC.exe Token: 34 1612 WMIC.exe Token: 35 1612 WMIC.exe Token: 36 1612 WMIC.exe Token: SeBackupPrivilege 4536 wbengine.exe Token: SeRestorePrivilege 4536 wbengine.exe Token: SeSecurityPrivilege 4536 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4756 wrote to memory of 2560 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 87 PID 4756 wrote to memory of 2560 4756 af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe 87 PID 2560 wrote to memory of 4804 2560 svchost.exe 94 PID 2560 wrote to memory of 4804 2560 svchost.exe 94 PID 4804 wrote to memory of 3784 4804 cmd.exe 96 PID 4804 wrote to memory of 3784 4804 cmd.exe 96 PID 4804 wrote to memory of 1612 4804 cmd.exe 99 PID 4804 wrote to memory of 1612 4804 cmd.exe 99 PID 2560 wrote to memory of 3832 2560 svchost.exe 100 PID 2560 wrote to memory of 3832 2560 svchost.exe 100 PID 3832 wrote to memory of 1536 3832 cmd.exe 102 PID 3832 wrote to memory of 1536 3832 cmd.exe 102 PID 3832 wrote to memory of 1852 3832 cmd.exe 103 PID 3832 wrote to memory of 1852 3832 cmd.exe 103 PID 2560 wrote to memory of 4380 2560 svchost.exe 104 PID 2560 wrote to memory of 4380 2560 svchost.exe 104 PID 4380 wrote to memory of 1100 4380 cmd.exe 106 PID 4380 wrote to memory of 1100 4380 cmd.exe 106 PID 2560 wrote to memory of 1416 2560 svchost.exe 110 PID 2560 wrote to memory of 1416 2560 svchost.exe 110 -
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\af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe"C:\Users\Admin\AppData\Local\Temp\af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4756 -
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:2560 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:4804 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:3784
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1612
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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:3832 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1536
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1852
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:4380 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1100
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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:1416
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:64
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4536
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:736
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:3148
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
3.1MB
MD53303698d5190201a3f6dd7f1118251e0
SHA1b7ef2c81d6ae8023ff811278ec3e5bfba8fd905d
SHA256af0e24781ed3683f04dd86a616e31490f36c2da4cbb4fddc76efbd0fc4f15d55
SHA5127ee79e8be71b4f3f7e6c1678e5100484e774d445777adc8f744d782258fad7444a5cd775a8290fdaadd7ab95b3c5fdb2b10e644dc64daa340c770d34151293f4
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Filesize
507B
MD501da9388394d86f1e626ce4d08f3bebb
SHA13ceff3e1ea38d0f0df2f5906bdbe79180a230cc4
SHA256a9108d9c95ebf0024ecd27e8ce34f6439c2f74b5c63917af83e150c9b45ef1a2
SHA512e234f02dab37026a9bd0b926c1a6e475116954dc00276ec4fe6ea8dead178cf1bb292afa27bf7d60f88247904399c8f986b2a040b1313c30028b85c4bbd7eec2