Analysis
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max time kernel
148s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
06-11-2024 21:24
Behavioral task
behavioral1
Sample
6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe
Resource
win7-20241023-en
windows7-x64
19 signatures
150 seconds
Behavioral task
behavioral2
Sample
6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
22 signatures
150 seconds
General
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Target
6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe
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Size
2.8MB
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MD5
9db424c6cad9c48c559c45c5c410ebe1
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SHA1
6e975642501db27324f035990b507fd2eeda30ba
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SHA256
6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98
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SHA512
f0b4ae4e1dd8f25bba0599dd8ec4a088eab74a9545103043d984d2d55a4522cff80480f9d23d0d9683df9dcb03a402929030f42ade7514fe85973dab2eafb9fe
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SSDEEP
24576:1DSqgStv6LDyjF4QYhrxJw+oOD6Nfye2IdiyeU7MMpOusu72d:1+eKQ+Tw5iYfye2IIyFdt7
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/4296-1-0x0000000000130000-0x0000000000400000-memory.dmp family_chaos behavioral2/files/0x0002000000022efc-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 972 bcdedit.exe 3800 bcdedit.exe -
pid Process 1928 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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe Key value queried \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation DeltaKeyfree.exe -
Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DeltaKeyfree.url DeltaKeyfree.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini DeltaKeyfree.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\LEIA-ME.txt DeltaKeyfree.exe -
Executes dropped EXE 1 IoCs
pid Process 4360 DeltaKeyfree.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\Links\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Public\Pictures\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Public\Desktop\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessibility\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Public\Documents\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Public\Music\desktop.ini DeltaKeyfree.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-4050598569-1597076380-177084960-1000\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\Music\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Public\Videos\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\Searches\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\AccountPictures\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\Documents\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\Videos\desktop.ini DeltaKeyfree.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini DeltaKeyfree.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\kv107oei6.jpg" DeltaKeyfree.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 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 Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_QEMU&Prod_QEMU_DVD-ROM\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 4644 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000_Classes\Local Settings DeltaKeyfree.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4360 DeltaKeyfree.exe -
Suspicious behavior: EnumeratesProcesses 49 IoCs
pid Process 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe 4360 DeltaKeyfree.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe Token: SeDebugPrivilege 4360 DeltaKeyfree.exe Token: SeBackupPrivilege 4324 vssvc.exe Token: SeRestorePrivilege 4324 vssvc.exe Token: SeAuditPrivilege 4324 vssvc.exe Token: SeIncreaseQuotaPrivilege 2148 WMIC.exe Token: SeSecurityPrivilege 2148 WMIC.exe Token: SeTakeOwnershipPrivilege 2148 WMIC.exe Token: SeLoadDriverPrivilege 2148 WMIC.exe Token: SeSystemProfilePrivilege 2148 WMIC.exe Token: SeSystemtimePrivilege 2148 WMIC.exe Token: SeProfSingleProcessPrivilege 2148 WMIC.exe Token: SeIncBasePriorityPrivilege 2148 WMIC.exe Token: SeCreatePagefilePrivilege 2148 WMIC.exe Token: SeBackupPrivilege 2148 WMIC.exe Token: SeRestorePrivilege 2148 WMIC.exe Token: SeShutdownPrivilege 2148 WMIC.exe Token: SeDebugPrivilege 2148 WMIC.exe Token: SeSystemEnvironmentPrivilege 2148 WMIC.exe Token: SeRemoteShutdownPrivilege 2148 WMIC.exe Token: SeUndockPrivilege 2148 WMIC.exe Token: SeManageVolumePrivilege 2148 WMIC.exe Token: 33 2148 WMIC.exe Token: 34 2148 WMIC.exe Token: 35 2148 WMIC.exe Token: 36 2148 WMIC.exe Token: SeIncreaseQuotaPrivilege 2148 WMIC.exe Token: SeSecurityPrivilege 2148 WMIC.exe Token: SeTakeOwnershipPrivilege 2148 WMIC.exe Token: SeLoadDriverPrivilege 2148 WMIC.exe Token: SeSystemProfilePrivilege 2148 WMIC.exe Token: SeSystemtimePrivilege 2148 WMIC.exe Token: SeProfSingleProcessPrivilege 2148 WMIC.exe Token: SeIncBasePriorityPrivilege 2148 WMIC.exe Token: SeCreatePagefilePrivilege 2148 WMIC.exe Token: SeBackupPrivilege 2148 WMIC.exe Token: SeRestorePrivilege 2148 WMIC.exe Token: SeShutdownPrivilege 2148 WMIC.exe Token: SeDebugPrivilege 2148 WMIC.exe Token: SeSystemEnvironmentPrivilege 2148 WMIC.exe Token: SeRemoteShutdownPrivilege 2148 WMIC.exe Token: SeUndockPrivilege 2148 WMIC.exe Token: SeManageVolumePrivilege 2148 WMIC.exe Token: 33 2148 WMIC.exe Token: 34 2148 WMIC.exe Token: 35 2148 WMIC.exe Token: 36 2148 WMIC.exe Token: SeBackupPrivilege 764 wbengine.exe Token: SeRestorePrivilege 764 wbengine.exe Token: SeSecurityPrivilege 764 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4296 wrote to memory of 4360 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 91 PID 4296 wrote to memory of 4360 4296 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe 91 PID 4360 wrote to memory of 3316 4360 DeltaKeyfree.exe 93 PID 4360 wrote to memory of 3316 4360 DeltaKeyfree.exe 93 PID 3316 wrote to memory of 4644 3316 cmd.exe 95 PID 3316 wrote to memory of 4644 3316 cmd.exe 95 PID 3316 wrote to memory of 2148 3316 cmd.exe 98 PID 3316 wrote to memory of 2148 3316 cmd.exe 98 PID 4360 wrote to memory of 888 4360 DeltaKeyfree.exe 99 PID 4360 wrote to memory of 888 4360 DeltaKeyfree.exe 99 PID 888 wrote to memory of 972 888 cmd.exe 101 PID 888 wrote to memory of 972 888 cmd.exe 101 PID 888 wrote to memory of 3800 888 cmd.exe 102 PID 888 wrote to memory of 3800 888 cmd.exe 102 PID 4360 wrote to memory of 1088 4360 DeltaKeyfree.exe 104 PID 4360 wrote to memory of 1088 4360 DeltaKeyfree.exe 104 PID 1088 wrote to memory of 1928 1088 cmd.exe 107 PID 1088 wrote to memory of 1928 1088 cmd.exe 107 PID 4360 wrote to memory of 3504 4360 DeltaKeyfree.exe 112 PID 4360 wrote to memory of 3504 4360 DeltaKeyfree.exe 112 -
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\6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe"C:\Users\Admin\AppData\Local\Temp\6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4296 -
C:\Users\Admin\AppData\Roaming\DeltaKeyfree.exe"C:\Users\Admin\AppData\Roaming\DeltaKeyfree.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:4360 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:3316 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:4644
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2148
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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:888 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:972
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:3800
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1088 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1928
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\LEIA-ME.txt3⤵PID:3504
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4324
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:764
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:3360
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:3660
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
2.8MB
MD59db424c6cad9c48c559c45c5c410ebe1
SHA16e975642501db27324f035990b507fd2eeda30ba
SHA2566ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98
SHA512f0b4ae4e1dd8f25bba0599dd8ec4a088eab74a9545103043d984d2d55a4522cff80480f9d23d0d9683df9dcb03a402929030f42ade7514fe85973dab2eafb9fe
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Filesize
561B
MD5f84c053d3c83275afdaa4d2ae0d1d195
SHA111600fd3778a0f74d807d9f13c05e3de5e175e10
SHA2560084d945bfa073934027d3c5b2e5efcbc95c609a08afa62310528f1ae37ce256
SHA512825527abbd5acbf9e8aefca2daec4d375e9be2692ea818f2a7fa3659c86ac096de5e8da712f6de4128bbab18bcd01a4c32f7e078b46de82be75a4c381d420f22