Resubmissions
16-02-2025 21:09
250216-zznawayrat 1016-02-2025 21:04
250216-zw37xsymdl 1016-02-2025 04:51
250216-fgyt4stmcy 10Analysis
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max time kernel
55s -
max time network
17s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
16-02-2025 04:51
Behavioral task
behavioral1
Sample
sorry.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
sorry.exe
Resource
win10v2004-20250211-en
General
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Target
sorry.exe
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Size
508KB
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MD5
9ab2affe7c7eb0d1b95ccf4216d7d972
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SHA1
902113db29be4f88cb61b93145dc09bbd0ca2690
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SHA256
288f536597498859b243ab7c280b08fda04c1d29230334a62654daf56e7fa70a
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SHA512
ce44e83b8296c6bf5e867cfdfe08eacfebea20ba09e91d9c1859ec47af4634ca932392a00299c8555ec7fbd5d39230c7987aaa4d6a725fde24d4497b0679aa31
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SSDEEP
12288:m4rJa124PiPzOvVTp0e6qD7dxYOo10n8GxQmTRTE9hoyi8r7IK6Bww5:m73E+EAKa
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 behavioral1/memory/2312-1-0x00000000000B0000-0x0000000000136000-memory.dmp family_chaos behavioral1/files/0x000c0000000122e0-6.dat family_chaos behavioral1/memory/1756-8-0x0000000001010000-0x0000000001096000-memory.dmp 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 2876 bcdedit.exe 1988 bcdedit.exe -
pid Process 1800 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 2 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\read_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 1756 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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\UpdateTask = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe" svchost.exe -
Drops desktop.ini file(s) 64 IoCs
description ioc Process File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\RM4QEUM4\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\YLJ4V77F\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\Recent\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\HE9LBEC2\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\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\Favorites\Links for United States\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\8NROS34R\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Games\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\HWUYADN5\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\WY6T2DFU\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\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\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\Y3Z0XF05\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\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\Recorded TV\Sample Media\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\History.IE5\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3290804112-2823094203-3137964600-1000\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\History\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\QJELLEL3\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\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Ringtones\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\Desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Videos\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\8ia3mpviy.jpg" svchost.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\WindowsUpdate.log rstrui.exe File opened for modification C:\Windows\Logs\SystemRestore\RestoreUI.0.etl rstrui.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language DllHost.exe -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2764 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000_Classes\Local Settings rundll32.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1416 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 2312 sorry.exe 1756 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2312 sorry.exe 2312 sorry.exe 2312 sorry.exe 1756 svchost.exe 1756 svchost.exe 1756 svchost.exe -
Suspicious use of AdjustPrivilegeToken 51 IoCs
description pid Process Token: SeDebugPrivilege 2312 sorry.exe Token: SeDebugPrivilege 1756 svchost.exe Token: SeBackupPrivilege 2964 vssvc.exe Token: SeRestorePrivilege 2964 vssvc.exe Token: SeAuditPrivilege 2964 vssvc.exe Token: SeIncreaseQuotaPrivilege 3048 WMIC.exe Token: SeSecurityPrivilege 3048 WMIC.exe Token: SeTakeOwnershipPrivilege 3048 WMIC.exe Token: SeLoadDriverPrivilege 3048 WMIC.exe Token: SeSystemProfilePrivilege 3048 WMIC.exe Token: SeSystemtimePrivilege 3048 WMIC.exe Token: SeProfSingleProcessPrivilege 3048 WMIC.exe Token: SeIncBasePriorityPrivilege 3048 WMIC.exe Token: SeCreatePagefilePrivilege 3048 WMIC.exe Token: SeBackupPrivilege 3048 WMIC.exe Token: SeRestorePrivilege 3048 WMIC.exe Token: SeShutdownPrivilege 3048 WMIC.exe Token: SeDebugPrivilege 3048 WMIC.exe Token: SeSystemEnvironmentPrivilege 3048 WMIC.exe Token: SeRemoteShutdownPrivilege 3048 WMIC.exe Token: SeUndockPrivilege 3048 WMIC.exe Token: SeManageVolumePrivilege 3048 WMIC.exe Token: 33 3048 WMIC.exe Token: 34 3048 WMIC.exe Token: 35 3048 WMIC.exe Token: SeIncreaseQuotaPrivilege 3048 WMIC.exe Token: SeSecurityPrivilege 3048 WMIC.exe Token: SeTakeOwnershipPrivilege 3048 WMIC.exe Token: SeLoadDriverPrivilege 3048 WMIC.exe Token: SeSystemProfilePrivilege 3048 WMIC.exe Token: SeSystemtimePrivilege 3048 WMIC.exe Token: SeProfSingleProcessPrivilege 3048 WMIC.exe Token: SeIncBasePriorityPrivilege 3048 WMIC.exe Token: SeCreatePagefilePrivilege 3048 WMIC.exe Token: SeBackupPrivilege 3048 WMIC.exe Token: SeRestorePrivilege 3048 WMIC.exe Token: SeShutdownPrivilege 3048 WMIC.exe Token: SeDebugPrivilege 3048 WMIC.exe Token: SeSystemEnvironmentPrivilege 3048 WMIC.exe Token: SeRemoteShutdownPrivilege 3048 WMIC.exe Token: SeUndockPrivilege 3048 WMIC.exe Token: SeManageVolumePrivilege 3048 WMIC.exe Token: 33 3048 WMIC.exe Token: 34 3048 WMIC.exe Token: 35 3048 WMIC.exe Token: SeBackupPrivilege 1360 wbengine.exe Token: SeRestorePrivilege 1360 wbengine.exe Token: SeSecurityPrivilege 1360 wbengine.exe Token: SeBackupPrivilege 612 vssvc.exe Token: SeRestorePrivilege 612 vssvc.exe Token: SeAuditPrivilege 612 vssvc.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2312 wrote to memory of 1756 2312 sorry.exe 31 PID 2312 wrote to memory of 1756 2312 sorry.exe 31 PID 2312 wrote to memory of 1756 2312 sorry.exe 31 PID 1756 wrote to memory of 2736 1756 svchost.exe 32 PID 1756 wrote to memory of 2736 1756 svchost.exe 32 PID 1756 wrote to memory of 2736 1756 svchost.exe 32 PID 2736 wrote to memory of 2764 2736 cmd.exe 34 PID 2736 wrote to memory of 2764 2736 cmd.exe 34 PID 2736 wrote to memory of 2764 2736 cmd.exe 34 PID 2736 wrote to memory of 3048 2736 cmd.exe 37 PID 2736 wrote to memory of 3048 2736 cmd.exe 37 PID 2736 wrote to memory of 3048 2736 cmd.exe 37 PID 1756 wrote to memory of 2436 1756 svchost.exe 39 PID 1756 wrote to memory of 2436 1756 svchost.exe 39 PID 1756 wrote to memory of 2436 1756 svchost.exe 39 PID 2436 wrote to memory of 2876 2436 cmd.exe 41 PID 2436 wrote to memory of 2876 2436 cmd.exe 41 PID 2436 wrote to memory of 2876 2436 cmd.exe 41 PID 2436 wrote to memory of 1988 2436 cmd.exe 42 PID 2436 wrote to memory of 1988 2436 cmd.exe 42 PID 2436 wrote to memory of 1988 2436 cmd.exe 42 PID 1756 wrote to memory of 1120 1756 svchost.exe 43 PID 1756 wrote to memory of 1120 1756 svchost.exe 43 PID 1756 wrote to memory of 1120 1756 svchost.exe 43 PID 1120 wrote to memory of 1800 1120 cmd.exe 45 PID 1120 wrote to memory of 1800 1120 cmd.exe 45 PID 1120 wrote to memory of 1800 1120 cmd.exe 45 PID 1756 wrote to memory of 1416 1756 svchost.exe 50 PID 1756 wrote to memory of 1416 1756 svchost.exe 50 PID 1756 wrote to memory of 1416 1756 svchost.exe 50 -
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\sorry.exe"C:\Users\Admin\AppData\Local\Temp\sorry.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2312 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1756 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2736 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2764
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:3048
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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:2436 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2876
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1988
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1120 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1800
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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:1416
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2964
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1360
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1996
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2856
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C:\Windows\system32\cmd.execmd /c ""C:\Users\Admin\Desktop\CheckpointMeasure.cmd" "1⤵PID:1268
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C:\Windows\system32\cmd.execmd /c ""C:\Users\Admin\Desktop\CheckpointMeasure.cmd" "1⤵PID:1656
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\AddRevoke.xlsx.2rqb1⤵
- Modifies registry class
PID:700
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C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{06622D85-6856-4460-8DE1-A81921B41C4B}1⤵
- System Location Discovery: System Language Discovery
PID:1276
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C:\Windows\system32\rstrui.exe"C:\Windows\system32\rstrui.exe"1⤵
- Drops file in Windows directory
PID:780
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:612
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
2Credential 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
105B
MD5a9438a0d642751f0da1f6f3ced742cf0
SHA1945892b565d6fece6e4f7c186fcaea6a077459df
SHA256762654958bef832abaea261654d9e47a4313f503ee9bac880d1bf0d3579e032e
SHA512ff8ded51608f928db421fdb89c756b163ca0d01823e03402b034286a6933ae0a7776ff8a45be10c0b5ef83fd22c1de8b7663013a20a822d951c65465cc20edbe
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Filesize
508KB
MD59ab2affe7c7eb0d1b95ccf4216d7d972
SHA1902113db29be4f88cb61b93145dc09bbd0ca2690
SHA256288f536597498859b243ab7c280b08fda04c1d29230334a62654daf56e7fa70a
SHA512ce44e83b8296c6bf5e867cfdfe08eacfebea20ba09e91d9c1859ec47af4634ca932392a00299c8555ec7fbd5d39230c7987aaa4d6a725fde24d4497b0679aa31
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0