Analysis
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max time kernel
102s -
max time network
103s -
platform
windows10-2004_x64 -
resource
win10v2004-20240709-en -
resource tags
arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system -
submitted
19-07-2024 18:32
Behavioral task
behavioral1
Sample
main.exe
Resource
win7-20240704-en
windows7-x64
22 signatures
150 seconds
Behavioral task
behavioral2
Sample
main.exe
Resource
win10v2004-20240709-en
windows10-2004-x64
26 signatures
150 seconds
General
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Target
main.exe
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Size
537KB
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MD5
db63c855e1a1f5ee8bbeb93a5c6a94d3
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SHA1
bb88714fddab5ebf931141b831954d99b91d2394
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SHA256
c423bd973d16de69ee63ff5321c3e2cbc5dd4fcf6c30a9e4e2fdb752449a26b9
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SHA512
0045bcd3d07da072aae92f508a806b529e6eb2d62d9c09eef85208a3083a4d9748a9d74346561f151d0b4e6e8bfba78ff8f80ae35fc717709ff3a25ce71b3172
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SSDEEP
12288:Pq4W8F32U2rKrMtiDUsZL6g+e8gk255H63:PzmVK4MULLy5B
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/3628-0-0x00000000009A0000-0x0000000000A2C000-memory.dmp family_chaos behavioral2/files/0x000a0000000233c8-6.dat family_chaos -
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 4476 bcdedit.exe 4632 bcdedit.exe -
pid Process 3808 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-1-5-21-384068567-2943195810-3631207890-1000\Control Panel\International\Geo\Nation main.exe Key value queried \REGISTRY\USER\S-1-5-21-384068567-2943195810-3631207890-1000\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 2940 svchost.exe -
Reads user/profile data of web browsers 2 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\Searches\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\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 F:\$RECYCLE.BIN\S-1-5-21-384068567-2943195810-3631207890-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\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\Favorites\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\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\Pictures\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\Links\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Documents\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\AccountPictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe 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\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\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\Public\Desktop\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-384068567-2943195810-3631207890-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ocqexoq0x.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 opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_DADY&PROD_HARDDISK\4&215468A5&0&000000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\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 -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WINWORD.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WINWORD.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WINWORD.EXE -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2280 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-384068567-2943195810-3631207890-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 2 IoCs
pid Process 632 NOTEPAD.EXE 2084 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 3 IoCs
pid Process 2940 svchost.exe 5052 WINWORD.EXE 5052 WINWORD.EXE -
Suspicious behavior: EnumeratesProcesses 49 IoCs
pid Process 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 3628 main.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe 2940 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 3628 main.exe Token: SeDebugPrivilege 2940 svchost.exe Token: SeBackupPrivilege 2848 vssvc.exe Token: SeRestorePrivilege 2848 vssvc.exe Token: SeAuditPrivilege 2848 vssvc.exe Token: SeIncreaseQuotaPrivilege 3596 WMIC.exe Token: SeSecurityPrivilege 3596 WMIC.exe Token: SeTakeOwnershipPrivilege 3596 WMIC.exe Token: SeLoadDriverPrivilege 3596 WMIC.exe Token: SeSystemProfilePrivilege 3596 WMIC.exe Token: SeSystemtimePrivilege 3596 WMIC.exe Token: SeProfSingleProcessPrivilege 3596 WMIC.exe Token: SeIncBasePriorityPrivilege 3596 WMIC.exe Token: SeCreatePagefilePrivilege 3596 WMIC.exe Token: SeBackupPrivilege 3596 WMIC.exe Token: SeRestorePrivilege 3596 WMIC.exe Token: SeShutdownPrivilege 3596 WMIC.exe Token: SeDebugPrivilege 3596 WMIC.exe Token: SeSystemEnvironmentPrivilege 3596 WMIC.exe Token: SeRemoteShutdownPrivilege 3596 WMIC.exe Token: SeUndockPrivilege 3596 WMIC.exe Token: SeManageVolumePrivilege 3596 WMIC.exe Token: 33 3596 WMIC.exe Token: 34 3596 WMIC.exe Token: 35 3596 WMIC.exe Token: 36 3596 WMIC.exe Token: SeIncreaseQuotaPrivilege 3596 WMIC.exe Token: SeSecurityPrivilege 3596 WMIC.exe Token: SeTakeOwnershipPrivilege 3596 WMIC.exe Token: SeLoadDriverPrivilege 3596 WMIC.exe Token: SeSystemProfilePrivilege 3596 WMIC.exe Token: SeSystemtimePrivilege 3596 WMIC.exe Token: SeProfSingleProcessPrivilege 3596 WMIC.exe Token: SeIncBasePriorityPrivilege 3596 WMIC.exe Token: SeCreatePagefilePrivilege 3596 WMIC.exe Token: SeBackupPrivilege 3596 WMIC.exe Token: SeRestorePrivilege 3596 WMIC.exe Token: SeShutdownPrivilege 3596 WMIC.exe Token: SeDebugPrivilege 3596 WMIC.exe Token: SeSystemEnvironmentPrivilege 3596 WMIC.exe Token: SeRemoteShutdownPrivilege 3596 WMIC.exe Token: SeUndockPrivilege 3596 WMIC.exe Token: SeManageVolumePrivilege 3596 WMIC.exe Token: 33 3596 WMIC.exe Token: 34 3596 WMIC.exe Token: 35 3596 WMIC.exe Token: 36 3596 WMIC.exe Token: SeBackupPrivilege 2580 wbengine.exe Token: SeRestorePrivilege 2580 wbengine.exe Token: SeSecurityPrivilege 2580 wbengine.exe -
Suspicious use of SetWindowsHookEx 13 IoCs
pid Process 5052 WINWORD.EXE 5052 WINWORD.EXE 5052 WINWORD.EXE 5052 WINWORD.EXE 5052 WINWORD.EXE 5052 WINWORD.EXE 5052 WINWORD.EXE 5052 WINWORD.EXE 5052 WINWORD.EXE 5052 WINWORD.EXE 5052 WINWORD.EXE 5052 WINWORD.EXE 5052 WINWORD.EXE -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 3628 wrote to memory of 2940 3628 main.exe 92 PID 3628 wrote to memory of 2940 3628 main.exe 92 PID 2940 wrote to memory of 3344 2940 svchost.exe 95 PID 2940 wrote to memory of 3344 2940 svchost.exe 95 PID 3344 wrote to memory of 2280 3344 cmd.exe 97 PID 3344 wrote to memory of 2280 3344 cmd.exe 97 PID 3344 wrote to memory of 3596 3344 cmd.exe 100 PID 3344 wrote to memory of 3596 3344 cmd.exe 100 PID 2940 wrote to memory of 3056 2940 svchost.exe 101 PID 2940 wrote to memory of 3056 2940 svchost.exe 101 PID 3056 wrote to memory of 4476 3056 cmd.exe 103 PID 3056 wrote to memory of 4476 3056 cmd.exe 103 PID 3056 wrote to memory of 4632 3056 cmd.exe 104 PID 3056 wrote to memory of 4632 3056 cmd.exe 104 PID 2940 wrote to memory of 1500 2940 svchost.exe 105 PID 2940 wrote to memory of 1500 2940 svchost.exe 105 PID 1500 wrote to memory of 3808 1500 cmd.exe 107 PID 1500 wrote to memory of 3808 1500 cmd.exe 107 PID 2940 wrote to memory of 632 2940 svchost.exe 113 PID 2940 wrote to memory of 632 2940 svchost.exe 113 -
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 WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
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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\main.exe"C:\Users\Admin\AppData\Local\Temp\main.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3628 -
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:2940 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:3344 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2280
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3596
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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:3056 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:4476
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:4632
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1500 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3808
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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:632
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2848
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2580
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1704
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:2968
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\OpenUninstall.ps1xml1⤵
- Opens file in notepad (likely ransom note)
PID:2084
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C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\Desktop\DenyMeasure.odt"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:5052
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
537KB
MD5db63c855e1a1f5ee8bbeb93a5c6a94d3
SHA1bb88714fddab5ebf931141b831954d99b91d2394
SHA256c423bd973d16de69ee63ff5321c3e2cbc5dd4fcf6c30a9e4e2fdb752449a26b9
SHA5120045bcd3d07da072aae92f508a806b529e6eb2d62d9c09eef85208a3083a4d9748a9d74346561f151d0b4e6e8bfba78ff8f80ae35fc717709ff3a25ce71b3172
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Filesize
741B
MD59624d8d9e455487acab423bd81962fa4
SHA10096b484dac2c5c6a4568b55083eb39632aee972
SHA256a6b206d4f3694e920fb06af93c6c5a2e7f052485bec2bfa57bc238134a4353ac
SHA5128ddb82b56c7e09ea939921f4df6c1196257356457d7fc09ca2d9035ab4c4af3a9419a41e46b22bd2e7bc3614592b59e35075679ed417280f7150809aae3cbd5e