Analysis
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max time kernel
117s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
07-01-2025 18:30
Behavioral task
behavioral1
Sample
2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4.exe
Resource
win10v2004-20241007-en
General
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Target
2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4.exe
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Size
6.3MB
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MD5
95be77dac172c472cba318f9876ec444
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SHA1
e24fc0a73ff5675a33de6bf033b65fa4b139d85a
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SHA256
2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4
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SHA512
4eeefdd69073f33d7369e52a306e812178365322ce26573331c9bfe9b60935e87b1a10b754df7159d87f1767ac945183b178923a53e21b7a5808e31e2af5a0a0
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SSDEEP
49152:31WDsGsL5TCvRc46CCGZuoKzzkvhctESbe7t0G8IfPIu3GTJ:
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\read_it.txt
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/2932-1-0x0000000001110000-0x0000000001762000-memory.dmp family_chaos behavioral1/files/0x0007000000012117-6.dat family_chaos behavioral1/memory/2660-9-0x0000000000B70000-0x00000000011C2000-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 1616 bcdedit.exe 2176 bcdedit.exe -
Renames multiple (200) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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pid Process 2308 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 2660 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-1-5-21-3063565911-2056067323-3330884624-1000\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\Admin\Favorites\Links for United States\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\U3EGUGI8\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\Local\Microsoft\Windows\History\History.IE5\desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\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\All Users\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\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\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\AQYH36ZT\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\QMPQWRBT\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\T1DP8V76\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Public\Pictures\Sample 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\Contacts\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Default\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Public\Downloads\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\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\UGWF8QWZ\desktop.ini svchost.exe File opened for modification C:\Users\All Users\Microsoft\Windows\Start Menu\Programs\Startup\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\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\Admin\AppData\Local\Microsoft\Feeds Cache\39RANI6K\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3063565911-2056067323-3330884624-1000\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\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\Public\Music\Sample 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\Public\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\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\Admin\AppData\Local\Microsoft\Windows\Burn\Burn\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\Downloads\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\Start Menu\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\BY17T927\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\keqv4gqej.jpg" svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2440 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 2688 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
pid Process 2932 2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4.exe 2660 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 2932 2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4.exe 2932 2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4.exe 2932 2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4.exe 2660 svchost.exe 2660 svchost.exe 2660 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2932 2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4.exe Token: SeDebugPrivilege 2660 svchost.exe Token: SeBackupPrivilege 2524 vssvc.exe Token: SeRestorePrivilege 2524 vssvc.exe Token: SeAuditPrivilege 2524 vssvc.exe Token: SeIncreaseQuotaPrivilege 1952 WMIC.exe Token: SeSecurityPrivilege 1952 WMIC.exe Token: SeTakeOwnershipPrivilege 1952 WMIC.exe Token: SeLoadDriverPrivilege 1952 WMIC.exe Token: SeSystemProfilePrivilege 1952 WMIC.exe Token: SeSystemtimePrivilege 1952 WMIC.exe Token: SeProfSingleProcessPrivilege 1952 WMIC.exe Token: SeIncBasePriorityPrivilege 1952 WMIC.exe Token: SeCreatePagefilePrivilege 1952 WMIC.exe Token: SeBackupPrivilege 1952 WMIC.exe Token: SeRestorePrivilege 1952 WMIC.exe Token: SeShutdownPrivilege 1952 WMIC.exe Token: SeDebugPrivilege 1952 WMIC.exe Token: SeSystemEnvironmentPrivilege 1952 WMIC.exe Token: SeRemoteShutdownPrivilege 1952 WMIC.exe Token: SeUndockPrivilege 1952 WMIC.exe Token: SeManageVolumePrivilege 1952 WMIC.exe Token: 33 1952 WMIC.exe Token: 34 1952 WMIC.exe Token: 35 1952 WMIC.exe Token: SeIncreaseQuotaPrivilege 1952 WMIC.exe Token: SeSecurityPrivilege 1952 WMIC.exe Token: SeTakeOwnershipPrivilege 1952 WMIC.exe Token: SeLoadDriverPrivilege 1952 WMIC.exe Token: SeSystemProfilePrivilege 1952 WMIC.exe Token: SeSystemtimePrivilege 1952 WMIC.exe Token: SeProfSingleProcessPrivilege 1952 WMIC.exe Token: SeIncBasePriorityPrivilege 1952 WMIC.exe Token: SeCreatePagefilePrivilege 1952 WMIC.exe Token: SeBackupPrivilege 1952 WMIC.exe Token: SeRestorePrivilege 1952 WMIC.exe Token: SeShutdownPrivilege 1952 WMIC.exe Token: SeDebugPrivilege 1952 WMIC.exe Token: SeSystemEnvironmentPrivilege 1952 WMIC.exe Token: SeRemoteShutdownPrivilege 1952 WMIC.exe Token: SeUndockPrivilege 1952 WMIC.exe Token: SeManageVolumePrivilege 1952 WMIC.exe Token: 33 1952 WMIC.exe Token: 34 1952 WMIC.exe Token: 35 1952 WMIC.exe Token: SeBackupPrivilege 2024 wbengine.exe Token: SeRestorePrivilege 2024 wbengine.exe Token: SeSecurityPrivilege 2024 wbengine.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2688 NOTEPAD.EXE -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2932 wrote to memory of 2660 2932 2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4.exe 29 PID 2932 wrote to memory of 2660 2932 2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4.exe 29 PID 2932 wrote to memory of 2660 2932 2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4.exe 29 PID 2660 wrote to memory of 2640 2660 svchost.exe 30 PID 2660 wrote to memory of 2640 2660 svchost.exe 30 PID 2660 wrote to memory of 2640 2660 svchost.exe 30 PID 2640 wrote to memory of 2440 2640 cmd.exe 32 PID 2640 wrote to memory of 2440 2640 cmd.exe 32 PID 2640 wrote to memory of 2440 2640 cmd.exe 32 PID 2640 wrote to memory of 1952 2640 cmd.exe 35 PID 2640 wrote to memory of 1952 2640 cmd.exe 35 PID 2640 wrote to memory of 1952 2640 cmd.exe 35 PID 2660 wrote to memory of 1628 2660 svchost.exe 37 PID 2660 wrote to memory of 1628 2660 svchost.exe 37 PID 2660 wrote to memory of 1628 2660 svchost.exe 37 PID 1628 wrote to memory of 1616 1628 cmd.exe 39 PID 1628 wrote to memory of 1616 1628 cmd.exe 39 PID 1628 wrote to memory of 1616 1628 cmd.exe 39 PID 1628 wrote to memory of 2176 1628 cmd.exe 40 PID 1628 wrote to memory of 2176 1628 cmd.exe 40 PID 1628 wrote to memory of 2176 1628 cmd.exe 40 PID 2660 wrote to memory of 1800 2660 svchost.exe 41 PID 2660 wrote to memory of 1800 2660 svchost.exe 41 PID 2660 wrote to memory of 1800 2660 svchost.exe 41 PID 1800 wrote to memory of 2308 1800 cmd.exe 43 PID 1800 wrote to memory of 2308 1800 cmd.exe 43 PID 1800 wrote to memory of 2308 1800 cmd.exe 43 PID 2660 wrote to memory of 2688 2660 svchost.exe 48 PID 2660 wrote to memory of 2688 2660 svchost.exe 48 PID 2660 wrote to memory of 2688 2660 svchost.exe 48 -
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\2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4.exe"C:\Users\Admin\AppData\Local\Temp\2dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4.exe"1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2932 -
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:2660 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2640 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2440
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1952
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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:1628 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1616
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2176
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:1800 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2308
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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)
- Suspicious use of FindShellTrayWindow
PID:2688
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2524
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2024
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2324
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1796
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
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1KB
MD53e2b5192e7ca51e0bd3fe0910b680ee6
SHA1a0a124d65a22f6f614dedc8cc9c35da9ac54c598
SHA256897da642f47d00bc703e62b3e9d451ab24af1ec742dfe739c924a02a56988c61
SHA512ee7326f3dabff32ebaaa7285b23ea2ec3a7753e7e8a255a81fe8f957083f016482b6beeb4468da00e1ab1ceed209a4b37bbc07ea7ba3f5046a2f5d7434d3db24
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Filesize
6.3MB
MD595be77dac172c472cba318f9876ec444
SHA1e24fc0a73ff5675a33de6bf033b65fa4b139d85a
SHA2562dd3144ab294d675eae0290d5b2d385d4d7ddb36e0450b982358a1519ba19fb4
SHA5124eeefdd69073f33d7369e52a306e812178365322ce26573331c9bfe9b60935e87b1a10b754df7159d87f1767ac945183b178923a53e21b7a5808e31e2af5a0a0
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0