Analysis
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max time kernel
121s -
max time network
122s -
platform
windows7_x64 -
resource
win7-20241010-en -
resource tags
arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system -
submitted
12/01/2025, 20:02 UTC
Behavioral task
behavioral1
Sample
2025-01-12_c799d8f92463a1ebc9d33222a81738b0_chaos_destroyer_wannacry.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
2025-01-12_c799d8f92463a1ebc9d33222a81738b0_chaos_destroyer_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2025-01-12_c799d8f92463a1ebc9d33222a81738b0_chaos_destroyer_wannacry.exe
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Size
26KB
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MD5
c799d8f92463a1ebc9d33222a81738b0
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SHA1
0df761e3bc4625337991005af3404fab654eec4d
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SHA256
a8acc7216ba2fde7f2f3b180dfc4f70b2bcaed44a50253612f4e05ddc3d1ccfd
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SHA512
ebd020db88d818bf47769c2198d7698e432b63f107aed27bc53e854249175a8bba8916814aac0fd5ee4ca300b95c1e57f137dcbb099f549afc3239577407153e
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SSDEEP
384:qYenjLLAG9rPOB+Xvzb/xqwbOVp91W01Ib5oxDGS:5+ru+7tc9RIb6xD9
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad\read_it.txt
chaos
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/752-1-0x0000000000060000-0x000000000006C000-memory.dmp family_chaos behavioral1/files/0x000d000000012257-5.dat family_chaos behavioral1/memory/2300-7-0x0000000000B50000-0x0000000000B5C000-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 2504 bcdedit.exe 1708 bcdedit.exe -
pid Process 1780 wbadmin.exe -
Disables Task Manager via registry modification
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Drops startup file 3 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\read_it.txt svchost.exe 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 -
Executes dropped EXE 1 IoCs
pid Process 2300 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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Drops desktop.ini file(s) 64 IoCs
description ioc Process 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\Maintenance\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 Mail\Stationery\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Admin\Documents\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\Public\Recorded TV\Sample Media\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\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\All Users\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Libraries\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\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2039016743-699959520-214465309-1000\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\Downloads\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\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\V50G20NG\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\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Public\Downloads\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\NQYB9FVA\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Favorites\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\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\Public\Pictures\Sample Pictures\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\AppData\Roaming\Microsoft\Windows\Libraries\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\Recorded TV\desktop.ini svchost.exe File opened for modification C:\Users\Public\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\8U3B82NZ\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\Default\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\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\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\2Q9CV5JV\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\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\All Users\Microsoft\Windows\Ringtones\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\Local\Microsoft\Windows\Temporary Internet Files\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\0CSVYEJU\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\All Users\Microsoft\Windows\Start Menu\Programs\Startup\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\Administrative Tools\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\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\BJINZE1S\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\QHWRVUKQ\desktop.ini 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 2752 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1808 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2300 svchost.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 752 2025-01-12_c799d8f92463a1ebc9d33222a81738b0_chaos_destroyer_wannacry.exe 752 2025-01-12_c799d8f92463a1ebc9d33222a81738b0_chaos_destroyer_wannacry.exe 752 2025-01-12_c799d8f92463a1ebc9d33222a81738b0_chaos_destroyer_wannacry.exe 2300 svchost.exe 2300 svchost.exe 2300 svchost.exe 2300 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 752 2025-01-12_c799d8f92463a1ebc9d33222a81738b0_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 2300 svchost.exe Token: SeBackupPrivilege 2840 vssvc.exe Token: SeRestorePrivilege 2840 vssvc.exe Token: SeAuditPrivilege 2840 vssvc.exe Token: SeIncreaseQuotaPrivilege 2816 WMIC.exe Token: SeSecurityPrivilege 2816 WMIC.exe Token: SeTakeOwnershipPrivilege 2816 WMIC.exe Token: SeLoadDriverPrivilege 2816 WMIC.exe Token: SeSystemProfilePrivilege 2816 WMIC.exe Token: SeSystemtimePrivilege 2816 WMIC.exe Token: SeProfSingleProcessPrivilege 2816 WMIC.exe Token: SeIncBasePriorityPrivilege 2816 WMIC.exe Token: SeCreatePagefilePrivilege 2816 WMIC.exe Token: SeBackupPrivilege 2816 WMIC.exe Token: SeRestorePrivilege 2816 WMIC.exe Token: SeShutdownPrivilege 2816 WMIC.exe Token: SeDebugPrivilege 2816 WMIC.exe Token: SeSystemEnvironmentPrivilege 2816 WMIC.exe Token: SeRemoteShutdownPrivilege 2816 WMIC.exe Token: SeUndockPrivilege 2816 WMIC.exe Token: SeManageVolumePrivilege 2816 WMIC.exe Token: 33 2816 WMIC.exe Token: 34 2816 WMIC.exe Token: 35 2816 WMIC.exe Token: SeIncreaseQuotaPrivilege 2816 WMIC.exe Token: SeSecurityPrivilege 2816 WMIC.exe Token: SeTakeOwnershipPrivilege 2816 WMIC.exe Token: SeLoadDriverPrivilege 2816 WMIC.exe Token: SeSystemProfilePrivilege 2816 WMIC.exe Token: SeSystemtimePrivilege 2816 WMIC.exe Token: SeProfSingleProcessPrivilege 2816 WMIC.exe Token: SeIncBasePriorityPrivilege 2816 WMIC.exe Token: SeCreatePagefilePrivilege 2816 WMIC.exe Token: SeBackupPrivilege 2816 WMIC.exe Token: SeRestorePrivilege 2816 WMIC.exe Token: SeShutdownPrivilege 2816 WMIC.exe Token: SeDebugPrivilege 2816 WMIC.exe Token: SeSystemEnvironmentPrivilege 2816 WMIC.exe Token: SeRemoteShutdownPrivilege 2816 WMIC.exe Token: SeUndockPrivilege 2816 WMIC.exe Token: SeManageVolumePrivilege 2816 WMIC.exe Token: 33 2816 WMIC.exe Token: 34 2816 WMIC.exe Token: 35 2816 WMIC.exe Token: SeBackupPrivilege 2940 wbengine.exe Token: SeRestorePrivilege 2940 wbengine.exe Token: SeSecurityPrivilege 2940 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 752 wrote to memory of 2300 752 2025-01-12_c799d8f92463a1ebc9d33222a81738b0_chaos_destroyer_wannacry.exe 31 PID 752 wrote to memory of 2300 752 2025-01-12_c799d8f92463a1ebc9d33222a81738b0_chaos_destroyer_wannacry.exe 31 PID 752 wrote to memory of 2300 752 2025-01-12_c799d8f92463a1ebc9d33222a81738b0_chaos_destroyer_wannacry.exe 31 PID 2300 wrote to memory of 2932 2300 svchost.exe 32 PID 2300 wrote to memory of 2932 2300 svchost.exe 32 PID 2300 wrote to memory of 2932 2300 svchost.exe 32 PID 2932 wrote to memory of 2752 2932 cmd.exe 34 PID 2932 wrote to memory of 2752 2932 cmd.exe 34 PID 2932 wrote to memory of 2752 2932 cmd.exe 34 PID 2932 wrote to memory of 2816 2932 cmd.exe 37 PID 2932 wrote to memory of 2816 2932 cmd.exe 37 PID 2932 wrote to memory of 2816 2932 cmd.exe 37 PID 2300 wrote to memory of 2916 2300 svchost.exe 39 PID 2300 wrote to memory of 2916 2300 svchost.exe 39 PID 2300 wrote to memory of 2916 2300 svchost.exe 39 PID 2916 wrote to memory of 2504 2916 cmd.exe 41 PID 2916 wrote to memory of 2504 2916 cmd.exe 41 PID 2916 wrote to memory of 2504 2916 cmd.exe 41 PID 2916 wrote to memory of 1708 2916 cmd.exe 42 PID 2916 wrote to memory of 1708 2916 cmd.exe 42 PID 2916 wrote to memory of 1708 2916 cmd.exe 42 PID 2300 wrote to memory of 2944 2300 svchost.exe 43 PID 2300 wrote to memory of 2944 2300 svchost.exe 43 PID 2300 wrote to memory of 2944 2300 svchost.exe 43 PID 2944 wrote to memory of 1780 2944 cmd.exe 45 PID 2944 wrote to memory of 1780 2944 cmd.exe 45 PID 2944 wrote to memory of 1780 2944 cmd.exe 45 PID 2300 wrote to memory of 1808 2300 svchost.exe 50 PID 2300 wrote to memory of 1808 2300 svchost.exe 50 PID 2300 wrote to memory of 1808 2300 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\2025-01-12_c799d8f92463a1ebc9d33222a81738b0_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2025-01-12_c799d8f92463a1ebc9d33222a81738b0_chaos_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:752 -
C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Drops desktop.ini file(s)
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2300 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2932 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2752
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2816
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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:2916 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2504
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1708
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2944 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:1780
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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:1808
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2840
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2940
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2984
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2008
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740
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Filesize
1B
MD5d1457b72c3fb323a2671125aef3eab5d
SHA15bab61eb53176449e25c2c82f172b82cb13ffb9d
SHA2568a8de823d5ed3e12746a62ef169bcf372be0ca44f0a1236abc35df05d96928e1
SHA512ca63c07ad35d8c9fb0c92d6146759b122d4ec5d3f67ebe2f30ddb69f9e6c9fd3bf31a5e408b08f1d4d9cd68120cced9e57f010bef3cde97653fed5470da7d1a0
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Filesize
24B
MD55598d30d80c91de8ec76098231a44082
SHA1956adb1e44994739e474b9438fa5c81dca5040ff
SHA256d6ab6e5e96a394fdd037c7171fcb593eb4fe324b6aa1e1a28b40195be8efd813
SHA512818e437a522095993ff92a629f5f7b6b03fefeb51419df49464e29dfc8506d30c14e6c1ca8047e9a23a75e8fd9fd69bead9abaf642783066da0f0227f1ee5627
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Filesize
26KB
MD5c799d8f92463a1ebc9d33222a81738b0
SHA10df761e3bc4625337991005af3404fab654eec4d
SHA256a8acc7216ba2fde7f2f3b180dfc4f70b2bcaed44a50253612f4e05ddc3d1ccfd
SHA512ebd020db88d818bf47769c2198d7698e432b63f107aed27bc53e854249175a8bba8916814aac0fd5ee4ca300b95c1e57f137dcbb099f549afc3239577407153e