Analysis
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max time kernel
93s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
19-11-2024 02:21
Behavioral task
behavioral1
Sample
testttsa.exe
Resource
win7-20240903-en
windows7-x64
20 signatures
150 seconds
Behavioral task
behavioral2
Sample
testttsa.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
23 signatures
150 seconds
General
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Target
testttsa.exe
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Size
104KB
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MD5
cfbf0711aaec84a0a3e73b2ccb8dc9bf
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SHA1
ec87d3a01063b5e27b09bbd5f024c43bd4a92cf3
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SHA256
2dad9fdc3ba592a020bd90c0fc11feeb1f9cf228c9d0c1c647fdbf8a3d7064ce
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SHA512
ef032094b3e4b308a2acc974555230f0265afc8ff0d580a6e0f5352e3cc5b0a9884d8de851ac495706da48c8969afbc81d39e41087f714ba0bc62a71f70a1bd2
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SSDEEP
1536:po2GCqr9IphA2AZyCeoetR8cGsgzCtRyEc1CvHSHyIBCHVF0suFf9:poVCqr9ILA2t/CZb3z1CvHSHyLm9
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/3004-1-0x00000000001D0000-0x00000000001EE000-memory.dmp family_chaos behavioral2/files/0x0009000000023c91-7.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 3048 bcdedit.exe 4032 bcdedit.exe -
pid Process 3004 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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation testttsa.exe Key value queried \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\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\FORNATHAN.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 3972 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\Contacts\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\Start Menu\Programs\Accessibility\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\SendTo\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\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\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\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\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\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\Favorites\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\Videos\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\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\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\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini svchost.exe File opened for modification C:\Users\Admin\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-1-5-21-1045960512-3948844814-3059691613-1000\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\AccountPictures\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
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\k0l3l67mh.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 4516 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 4552 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3972 svchost.exe -
Suspicious behavior: EnumeratesProcesses 49 IoCs
pid Process 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3004 testttsa.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe 3972 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 3004 testttsa.exe Token: SeDebugPrivilege 3972 svchost.exe Token: SeBackupPrivilege 2860 vssvc.exe Token: SeRestorePrivilege 2860 vssvc.exe Token: SeAuditPrivilege 2860 vssvc.exe Token: SeIncreaseQuotaPrivilege 1048 WMIC.exe Token: SeSecurityPrivilege 1048 WMIC.exe Token: SeTakeOwnershipPrivilege 1048 WMIC.exe Token: SeLoadDriverPrivilege 1048 WMIC.exe Token: SeSystemProfilePrivilege 1048 WMIC.exe Token: SeSystemtimePrivilege 1048 WMIC.exe Token: SeProfSingleProcessPrivilege 1048 WMIC.exe Token: SeIncBasePriorityPrivilege 1048 WMIC.exe Token: SeCreatePagefilePrivilege 1048 WMIC.exe Token: SeBackupPrivilege 1048 WMIC.exe Token: SeRestorePrivilege 1048 WMIC.exe Token: SeShutdownPrivilege 1048 WMIC.exe Token: SeDebugPrivilege 1048 WMIC.exe Token: SeSystemEnvironmentPrivilege 1048 WMIC.exe Token: SeRemoteShutdownPrivilege 1048 WMIC.exe Token: SeUndockPrivilege 1048 WMIC.exe Token: SeManageVolumePrivilege 1048 WMIC.exe Token: 33 1048 WMIC.exe Token: 34 1048 WMIC.exe Token: 35 1048 WMIC.exe Token: 36 1048 WMIC.exe Token: SeIncreaseQuotaPrivilege 1048 WMIC.exe Token: SeSecurityPrivilege 1048 WMIC.exe Token: SeTakeOwnershipPrivilege 1048 WMIC.exe Token: SeLoadDriverPrivilege 1048 WMIC.exe Token: SeSystemProfilePrivilege 1048 WMIC.exe Token: SeSystemtimePrivilege 1048 WMIC.exe Token: SeProfSingleProcessPrivilege 1048 WMIC.exe Token: SeIncBasePriorityPrivilege 1048 WMIC.exe Token: SeCreatePagefilePrivilege 1048 WMIC.exe Token: SeBackupPrivilege 1048 WMIC.exe Token: SeRestorePrivilege 1048 WMIC.exe Token: SeShutdownPrivilege 1048 WMIC.exe Token: SeDebugPrivilege 1048 WMIC.exe Token: SeSystemEnvironmentPrivilege 1048 WMIC.exe Token: SeRemoteShutdownPrivilege 1048 WMIC.exe Token: SeUndockPrivilege 1048 WMIC.exe Token: SeManageVolumePrivilege 1048 WMIC.exe Token: 33 1048 WMIC.exe Token: 34 1048 WMIC.exe Token: 35 1048 WMIC.exe Token: 36 1048 WMIC.exe Token: SeBackupPrivilege 4060 wbengine.exe Token: SeRestorePrivilege 4060 wbengine.exe Token: SeSecurityPrivilege 4060 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 3004 wrote to memory of 3972 3004 testttsa.exe 99 PID 3004 wrote to memory of 3972 3004 testttsa.exe 99 PID 3972 wrote to memory of 4332 3972 svchost.exe 101 PID 3972 wrote to memory of 4332 3972 svchost.exe 101 PID 4332 wrote to memory of 4516 4332 cmd.exe 103 PID 4332 wrote to memory of 4516 4332 cmd.exe 103 PID 4332 wrote to memory of 1048 4332 cmd.exe 107 PID 4332 wrote to memory of 1048 4332 cmd.exe 107 PID 3972 wrote to memory of 2820 3972 svchost.exe 108 PID 3972 wrote to memory of 2820 3972 svchost.exe 108 PID 2820 wrote to memory of 3048 2820 cmd.exe 110 PID 2820 wrote to memory of 3048 2820 cmd.exe 110 PID 2820 wrote to memory of 4032 2820 cmd.exe 111 PID 2820 wrote to memory of 4032 2820 cmd.exe 111 PID 3972 wrote to memory of 1044 3972 svchost.exe 112 PID 3972 wrote to memory of 1044 3972 svchost.exe 112 PID 1044 wrote to memory of 3004 1044 cmd.exe 114 PID 1044 wrote to memory of 3004 1044 cmd.exe 114 PID 3972 wrote to memory of 4552 3972 svchost.exe 119 PID 3972 wrote to memory of 4552 3972 svchost.exe 119 -
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\testttsa.exe"C:\Users\Admin\AppData\Local\Temp\testttsa.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3004 -
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:3972 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:4332 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4516
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1048
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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:2820 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:3048
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:4032
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1044 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3004
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\FORNATHAN.txt3⤵
- Opens file in notepad (likely ransom note)
PID:4552
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2860
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4060
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:4144
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:3332
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
104KB
MD5cfbf0711aaec84a0a3e73b2ccb8dc9bf
SHA1ec87d3a01063b5e27b09bbd5f024c43bd4a92cf3
SHA2562dad9fdc3ba592a020bd90c0fc11feeb1f9cf228c9d0c1c647fdbf8a3d7064ce
SHA512ef032094b3e4b308a2acc974555230f0265afc8ff0d580a6e0f5352e3cc5b0a9884d8de851ac495706da48c8969afbc81d39e41087f714ba0bc62a71f70a1bd2
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Filesize
1KB
MD52904ac0223c2a9663f8e3948804841a6
SHA117e075cb79622bc6aa80e61f825daf9eee14fb86
SHA256e1400c81a98135914ca603de87843a57347f19b9a20c4df650b54ec2db779aa0
SHA512918745eebed438480198aa15c275fd7898d8bd5d0f7d65210cafaab4eecd2257df2a63e9028de508df408807670ab296db344a7d54b20bf5331514d3e28c34ed