Analysis
- max time kernel
142s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system - submitted
25/07/2023, 06:32
Behavioral task
behavioral1
Sample
1.exe
Resource
win7-20230712-en
windows7-x64
20 signatures
150 seconds
Behavioral task
behavioral2
Sample
1.exe
Resource
win10v2004-20230703-en
windows10-2004-x64
23 signatures
150 seconds
General
- Target 1.exe
- Size 953KB
- Sample230725-hal8vabe81
- SHA256 8727091cbb89e5e31eeb2503ffaa242601c8840eee0973fd62fedf1b4b58ab44
- MD5 adb3dde4a25e596c16ced4cdfc6ff8dd
- SHA1 7934e6bc9489933c0af8dfe7bdff482fc6759bdc
- SHA512 f14c27892ed4d11bdd46a130abc7fa40ae8c4577bcd45c3af7c5928b82f27c3646b906fda880e5c9df623071edaab8de82fd46af8f3194f33d7d46c2c3d1d587
- SSDEEP 12288:vEPMLC814R2hig4tHkg2W+AU+R2TjsPvEpv8LpgUO4EP3SL98l0zmWHQuTwYzzjc:/ztQE1ov2AZ9HjkftWy3P
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Path
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C:\Users\Admin\Documents\PLEASEREAD.txt
Ransom Note
- WELCOME, DODO has returned AGAIN. Your files have been encrypted and you won't be able to decrypt them. You can buy decryption software from us, this software will allow you to recover all of your data and remove the ransomware from your computer. The price of the software is $15. Payment can be made in Bitcoin or XMR. How do I pay, where do I get Bitcoin or XMR? Purchasing cryptocurrency varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin or XMR. Payment information: send $15, to one of our addresses, then send us email with payment confirmation and you'll get the decryption software in email. Email Address : [email protected] BTC address: bc1qsht77cpgw7kv420r4secmu88g34wvn96dsyc5s XMR address: 44GUTQ7WqysSjLDCXfTnsYLCVJNGp67AECA9kTrAvjYCNz3ScZkYXZKP2EbR3DfbXPUYw6bMkaBuYCd6PdJCYngr4WtCeFt
Emails
Signatures
- Chaos
Ransomware family first seen in June 2021.
- Chaos Ransomware 4 IoCs
resource yara_rule behavioral2/memory/4404-133-0x00000000005F0000-0x00000000006E4000-memory.dmp family_chaos behavioral2/files/0x000600000002320e-139.dat family_chaos behavioral2/files/0x000600000002320e-144.dat family_chaos behavioral2/files/0x000600000002320e-146.dat family_chaos - Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
- Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 5116 bcdedit.exe 2128 bcdedit.exe - Renames multiple (186) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 3280 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-1-5-21-3195054982-4292022746-1467505928-1000\Control Panel\International\Geo\Nation 1.exe Key value queried \REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\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\PLEASEREAD.txt svchost.exe - Executes dropped EXE 1 IoCs
pid Process 4132 svchost.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Drops desktop.ini file(s) 34 IoCs
description ioc Process 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\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\AccountPictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\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\Favorites\Links\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\Public\Videos\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3195054982-4292022746-1467505928-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Accessories\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\Public\Documents\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\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\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\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\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\OneDrive\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\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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 - Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\3skaaveya.jpg" svchost.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 3184 vssadmin.exe - Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3195054982-4292022746-1467505928-1000_Classes\Local Settings svchost.exe - Opens file in notepad (likely ransom note) 1 IoCs
pid Process 4764 NOTEPAD.EXE - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4132 svchost.exe - Suspicious behavior: EnumeratesProcesses 51 IoCs
pid Process 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4404 1.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe 4132 svchost.exe - Suspicious use of AdjustPrivilegeToken 50 IoCs
description pid Process Token: SeDebugPrivilege 4404 1.exe Token: SeDebugPrivilege 4132 svchost.exe Token: SeBackupPrivilege 1356 vssvc.exe Token: SeRestorePrivilege 1356 vssvc.exe Token: SeAuditPrivilege 1356 vssvc.exe Token: SeIncreaseQuotaPrivilege 4968 WMIC.exe Token: SeSecurityPrivilege 4968 WMIC.exe Token: SeTakeOwnershipPrivilege 4968 WMIC.exe Token: SeLoadDriverPrivilege 4968 WMIC.exe Token: SeSystemProfilePrivilege 4968 WMIC.exe Token: SeSystemtimePrivilege 4968 WMIC.exe Token: SeProfSingleProcessPrivilege 4968 WMIC.exe Token: SeIncBasePriorityPrivilege 4968 WMIC.exe Token: SeCreatePagefilePrivilege 4968 WMIC.exe Token: SeBackupPrivilege 4968 WMIC.exe Token: SeRestorePrivilege 4968 WMIC.exe Token: SeShutdownPrivilege 4968 WMIC.exe Token: SeDebugPrivilege 4968 WMIC.exe Token: SeSystemEnvironmentPrivilege 4968 WMIC.exe Token: SeRemoteShutdownPrivilege 4968 WMIC.exe Token: SeUndockPrivilege 4968 WMIC.exe Token: SeManageVolumePrivilege 4968 WMIC.exe Token: 33 4968 WMIC.exe Token: 34 4968 WMIC.exe Token: 35 4968 WMIC.exe Token: 36 4968 WMIC.exe Token: SeIncreaseQuotaPrivilege 4968 WMIC.exe Token: SeSecurityPrivilege 4968 WMIC.exe Token: SeTakeOwnershipPrivilege 4968 WMIC.exe Token: SeLoadDriverPrivilege 4968 WMIC.exe Token: SeSystemProfilePrivilege 4968 WMIC.exe Token: SeSystemtimePrivilege 4968 WMIC.exe Token: SeProfSingleProcessPrivilege 4968 WMIC.exe Token: SeIncBasePriorityPrivilege 4968 WMIC.exe Token: SeCreatePagefilePrivilege 4968 WMIC.exe Token: SeBackupPrivilege 4968 WMIC.exe Token: SeRestorePrivilege 4968 WMIC.exe Token: SeShutdownPrivilege 4968 WMIC.exe Token: SeDebugPrivilege 4968 WMIC.exe Token: SeSystemEnvironmentPrivilege 4968 WMIC.exe Token: SeRemoteShutdownPrivilege 4968 WMIC.exe Token: SeUndockPrivilege 4968 WMIC.exe Token: SeManageVolumePrivilege 4968 WMIC.exe Token: 33 4968 WMIC.exe Token: 34 4968 WMIC.exe Token: 35 4968 WMIC.exe Token: 36 4968 WMIC.exe Token: SeBackupPrivilege 4188 wbengine.exe Token: SeRestorePrivilege 4188 wbengine.exe Token: SeSecurityPrivilege 4188 wbengine.exe - Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4404 wrote to memory of 4132 4404 1.exe 87 PID 4404 wrote to memory of 4132 4404 1.exe 87 PID 4132 wrote to memory of 3108 4132 svchost.exe 96 PID 4132 wrote to memory of 3108 4132 svchost.exe 96 PID 3108 wrote to memory of 3184 3108 cmd.exe 99 PID 3108 wrote to memory of 3184 3108 cmd.exe 99 PID 3108 wrote to memory of 4968 3108 cmd.exe 103 PID 3108 wrote to memory of 4968 3108 cmd.exe 103 PID 4132 wrote to memory of 3644 4132 svchost.exe 104 PID 4132 wrote to memory of 3644 4132 svchost.exe 104 PID 3644 wrote to memory of 5116 3644 cmd.exe 106 PID 3644 wrote to memory of 5116 3644 cmd.exe 106 PID 3644 wrote to memory of 2128 3644 cmd.exe 107 PID 3644 wrote to memory of 2128 3644 cmd.exe 107 PID 4132 wrote to memory of 232 4132 svchost.exe 108 PID 4132 wrote to memory of 232 4132 svchost.exe 108 PID 232 wrote to memory of 3280 232 cmd.exe 110 PID 232 wrote to memory of 3280 232 cmd.exe 110 PID 4132 wrote to memory of 4764 4132 svchost.exe 114 PID 4132 wrote to memory of 4764 4132 svchost.exe 114 - 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.
- 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\1.exe"C:\Users\Admin\AppData\Local\Temp\1.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4404 -
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:4132 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:3108 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:3184
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4968
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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:3644 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:5116
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2128
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:232 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:3280
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\PLEASEREAD.txt3⤵
- Opens file in notepad (likely ransom note)
PID:4764
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1356
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4188
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2028
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵
- Checks SCSI registry key(s)
PID:396
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\PLEASEREAD.txt
- Size 898B
- SHA256 35bfff091f9ccc347a27baa02e44db0e4d02ade43f1767777e24d0a6a7abee89
- MD5 30f33638264fec81af03fc5a9eddd072
- SHA1 72d5d2da2ad261ec87c53d05b570c89e917e8ff1
- SHA512 f5b0e836a2d963dc81c2640921f6bec66ea0a12fdda7549140c2cc1ab028f1c198d83fbb83b867770b061002573f23d6927a2e56b8724b85e5b84c042ab87c0e
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Roaming\svchost.exe
- Size 953KB
- SHA256 8727091cbb89e5e31eeb2503ffaa242601c8840eee0973fd62fedf1b4b58ab44
- MD5 adb3dde4a25e596c16ced4cdfc6ff8dd
- SHA1 7934e6bc9489933c0af8dfe7bdff482fc6759bdc
- SHA512 f14c27892ed4d11bdd46a130abc7fa40ae8c4577bcd45c3af7c5928b82f27c3646b906fda880e5c9df623071edaab8de82fd46af8f3194f33d7d46c2c3d1d587
- SSDEEP 12288:vEPMLC814R2hig4tHkg2W+AU+R2TjsPvEpv8LpgUO4EP3SL98l0zmWHQuTwYzzjc:/ztQE1ov2AZ9HjkftWy3P
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\svchost.exe
- Size 953KB
- SHA256 8727091cbb89e5e31eeb2503ffaa242601c8840eee0973fd62fedf1b4b58ab44
- MD5 adb3dde4a25e596c16ced4cdfc6ff8dd
- SHA1 7934e6bc9489933c0af8dfe7bdff482fc6759bdc
- SHA512 f14c27892ed4d11bdd46a130abc7fa40ae8c4577bcd45c3af7c5928b82f27c3646b906fda880e5c9df623071edaab8de82fd46af8f3194f33d7d46c2c3d1d587
- SSDEEP 12288:vEPMLC814R2hig4tHkg2W+AU+R2TjsPvEpv8LpgUO4EP3SL98l0zmWHQuTwYzzjc:/ztQE1ov2AZ9HjkftWy3P
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\svchost.exe
- Size 953KB
- SHA256 8727091cbb89e5e31eeb2503ffaa242601c8840eee0973fd62fedf1b4b58ab44
- MD5 adb3dde4a25e596c16ced4cdfc6ff8dd
- SHA1 7934e6bc9489933c0af8dfe7bdff482fc6759bdc
- SHA512 f14c27892ed4d11bdd46a130abc7fa40ae8c4577bcd45c3af7c5928b82f27c3646b906fda880e5c9df623071edaab8de82fd46af8f3194f33d7d46c2c3d1d587
- SSDEEP 12288:vEPMLC814R2hig4tHkg2W+AU+R2TjsPvEpv8LpgUO4EP3SL98l0zmWHQuTwYzzjc:/ztQE1ov2AZ9HjkftWy3P
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\Documents\PLEASEREAD.txt
- Size 898B
- SHA256 35bfff091f9ccc347a27baa02e44db0e4d02ade43f1767777e24d0a6a7abee89
- MD5 30f33638264fec81af03fc5a9eddd072
- SHA1 72d5d2da2ad261ec87c53d05b570c89e917e8ff1
- SHA512 f5b0e836a2d963dc81c2640921f6bec66ea0a12fdda7549140c2cc1ab028f1c198d83fbb83b867770b061002573f23d6927a2e56b8724b85e5b84c042ab87c0e
- MD5 SHA1 SHA512