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Analysis
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max time kernel
151s -
max time network
160s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
07/11/2022, 14:20
Behavioral task
behavioral1
Sample
f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe
Resource
win7-20220901-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
21 signatures
150 seconds
General
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Target
f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe
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Size
263KB
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MD5
9d016244b7f58fa5e974ef5f6e1ae54e
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SHA1
001bc943725ab768f8b8ecb2c9d3ae328f33c78b
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SHA256
f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f
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SHA512
292c222ca38e12c933769e128c9682a23719204214c1aca7e585eb1ef6c8c8b2090514298df16fe8b233482d8a7dedddd402c7db1d90aae8ea67915a2ff422d7
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SSDEEP
6144:iBr9fEjPswpzDFi2XFF47RpYlvP8kq/ac6:DjPskM2Xv47RGlvy/ac6
Score
10/10
Malware Config
Signatures
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Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware 3 IoCs
resource yara_rule behavioral2/memory/4732-132-0x0000000000CB0000-0x0000000000CF8000-memory.dmp family_chaos behavioral2/files/0x000300000001e64b-135.dat family_chaos behavioral2/files/0x000300000001e64b-136.dat family_chaos -
Deletes shadow copies 2 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 3852 bcdedit.exe 4268 bcdedit.exe -
pid Process 3200 wbadmin.exe -
Executes dropped EXE 1 IoCs
pid Process 4460 svchost.exe -
Modifies extensions of user files 5 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\ClearApprove.tif => C:\Users\Admin\Pictures\ClearApprove.tif.terror_ramp3 svchost.exe File renamed C:\Users\Admin\Pictures\InitializeUnregister.tif => C:\Users\Admin\Pictures\InitializeUnregister.tif.terror_ramp3 svchost.exe File renamed C:\Users\Admin\Pictures\SplitUnregister.png => C:\Users\Admin\Pictures\SplitUnregister.png.terror_ramp3 svchost.exe File renamed C:\Users\Admin\Pictures\StopResize.png => C:\Users\Admin\Pictures\StopResize.png.terror_ramp3 svchost.exe File renamed C:\Users\Admin\Pictures\UpdateCheckpoint.tif => C:\Users\Admin\Pictures\UpdateCheckpoint.tif.terror_ramp3 svchost.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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation svchost.exe -
Drops startup file 3 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\ramp3.txt svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url 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) 33 IoCs
description ioc Process 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\Admin\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\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\Admin\AppData\Roaming\Microsoft\Windows\SendTo\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\Roaming\Microsoft\Windows\Start Menu\Programs\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Internet Explorer\Quick Launch\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\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\Favorites\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\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\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\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\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\Windows\Start Menu\Programs\Maintenance\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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Start Menu\Programs\Accessibility\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\stiycxs5a.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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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_DADY&PROD_DADY_DVD-ROM\4&215468A5&0&010000 vds.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_DADY_DVD-ROM\4&215468a5&0&010000\FriendlyName vds.exe -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 536 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings svchost.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 5096 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4460 svchost.exe -
Suspicious behavior: EnumeratesProcesses 49 IoCs
pid Process 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe 4460 svchost.exe -
Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe Token: SeDebugPrivilege 4460 svchost.exe Token: SeBackupPrivilege 4092 vssvc.exe Token: SeRestorePrivilege 4092 vssvc.exe Token: SeAuditPrivilege 4092 vssvc.exe Token: SeIncreaseQuotaPrivilege 3760 WMIC.exe Token: SeSecurityPrivilege 3760 WMIC.exe Token: SeTakeOwnershipPrivilege 3760 WMIC.exe Token: SeLoadDriverPrivilege 3760 WMIC.exe Token: SeSystemProfilePrivilege 3760 WMIC.exe Token: SeSystemtimePrivilege 3760 WMIC.exe Token: SeProfSingleProcessPrivilege 3760 WMIC.exe Token: SeIncBasePriorityPrivilege 3760 WMIC.exe Token: SeCreatePagefilePrivilege 3760 WMIC.exe Token: SeBackupPrivilege 3760 WMIC.exe Token: SeRestorePrivilege 3760 WMIC.exe Token: SeShutdownPrivilege 3760 WMIC.exe Token: SeDebugPrivilege 3760 WMIC.exe Token: SeSystemEnvironmentPrivilege 3760 WMIC.exe Token: SeRemoteShutdownPrivilege 3760 WMIC.exe Token: SeUndockPrivilege 3760 WMIC.exe Token: SeManageVolumePrivilege 3760 WMIC.exe Token: 33 3760 WMIC.exe Token: 34 3760 WMIC.exe Token: 35 3760 WMIC.exe Token: 36 3760 WMIC.exe Token: SeIncreaseQuotaPrivilege 3760 WMIC.exe Token: SeSecurityPrivilege 3760 WMIC.exe Token: SeTakeOwnershipPrivilege 3760 WMIC.exe Token: SeLoadDriverPrivilege 3760 WMIC.exe Token: SeSystemProfilePrivilege 3760 WMIC.exe Token: SeSystemtimePrivilege 3760 WMIC.exe Token: SeProfSingleProcessPrivilege 3760 WMIC.exe Token: SeIncBasePriorityPrivilege 3760 WMIC.exe Token: SeCreatePagefilePrivilege 3760 WMIC.exe Token: SeBackupPrivilege 3760 WMIC.exe Token: SeRestorePrivilege 3760 WMIC.exe Token: SeShutdownPrivilege 3760 WMIC.exe Token: SeDebugPrivilege 3760 WMIC.exe Token: SeSystemEnvironmentPrivilege 3760 WMIC.exe Token: SeRemoteShutdownPrivilege 3760 WMIC.exe Token: SeUndockPrivilege 3760 WMIC.exe Token: SeManageVolumePrivilege 3760 WMIC.exe Token: 33 3760 WMIC.exe Token: 34 3760 WMIC.exe Token: 35 3760 WMIC.exe Token: 36 3760 WMIC.exe Token: SeBackupPrivilege 2132 wbengine.exe Token: SeRestorePrivilege 2132 wbengine.exe Token: SeSecurityPrivilege 2132 wbengine.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4732 wrote to memory of 4460 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 81 PID 4732 wrote to memory of 4460 4732 f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe 81 PID 4460 wrote to memory of 3220 4460 svchost.exe 85 PID 4460 wrote to memory of 3220 4460 svchost.exe 85 PID 3220 wrote to memory of 536 3220 cmd.exe 87 PID 3220 wrote to memory of 536 3220 cmd.exe 87 PID 3220 wrote to memory of 3760 3220 cmd.exe 90 PID 3220 wrote to memory of 3760 3220 cmd.exe 90 PID 4460 wrote to memory of 4516 4460 svchost.exe 91 PID 4460 wrote to memory of 4516 4460 svchost.exe 91 PID 4516 wrote to memory of 3852 4516 cmd.exe 93 PID 4516 wrote to memory of 3852 4516 cmd.exe 93 PID 4516 wrote to memory of 4268 4516 cmd.exe 94 PID 4516 wrote to memory of 4268 4516 cmd.exe 94 PID 4460 wrote to memory of 532 4460 svchost.exe 95 PID 4460 wrote to memory of 532 4460 svchost.exe 95 PID 532 wrote to memory of 3200 532 cmd.exe 97 PID 532 wrote to memory of 3200 532 cmd.exe 97 PID 4460 wrote to memory of 5096 4460 svchost.exe 101 PID 4460 wrote to memory of 5096 4460 svchost.exe 101
Processes
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C:\Users\Admin\AppData\Local\Temp\f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe"C:\Users\Admin\AppData\Local\Temp\f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4732 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Executes dropped EXE
- Modifies extensions of user files
- Checks computer location settings
- Drops startup file
- 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:4460 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:3220 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:536
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3760
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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:4516 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:3852
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:4268
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:532 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3200
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\ramp3.txt3⤵
- Opens file in notepad (likely ransom note)
PID:5096
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4092
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2132
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:4248
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:3160
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
591B
MD54a6443639a724a288bda752871e355b5
SHA1456ba0a8c5ad860c5300452a32bf96ca86a472b9
SHA2565a151e52d267134f76813bc5dd523da662f8925f021a2de6b9cc63f9b5d40eb6
SHA512875d09192c1832c5cb49e4f04e4ce0ee18bdee58fb4adc503d95a5dfff5de6b83688783e4ebd23058ddfddb77893b1adf3acf1e5675b2e95c3349d9a6a4d95ca
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Filesize
263KB
MD59d016244b7f58fa5e974ef5f6e1ae54e
SHA1001bc943725ab768f8b8ecb2c9d3ae328f33c78b
SHA256f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f
SHA512292c222ca38e12c933769e128c9682a23719204214c1aca7e585eb1ef6c8c8b2090514298df16fe8b233482d8a7dedddd402c7db1d90aae8ea67915a2ff422d7
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Filesize
263KB
MD59d016244b7f58fa5e974ef5f6e1ae54e
SHA1001bc943725ab768f8b8ecb2c9d3ae328f33c78b
SHA256f871efc0cdf5446908e436de9ed821ff0ec5e217c50c16e69e3d0e83f6257f0f
SHA512292c222ca38e12c933769e128c9682a23719204214c1aca7e585eb1ef6c8c8b2090514298df16fe8b233482d8a7dedddd402c7db1d90aae8ea67915a2ff422d7