Analysis
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max time kernel
122s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20240704-en -
resource tags
arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system -
submitted
08-08-2024 12:29
Behavioral task
behavioral1
Sample
2024-08-08_39aca11f467b0241f61077240211b799_chaos_destroyer_wannacry.exe
Resource
win7-20240704-en
Behavioral task
behavioral2
Sample
2024-08-08_39aca11f467b0241f61077240211b799_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240802-en
General
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Target
2024-08-08_39aca11f467b0241f61077240211b799_chaos_destroyer_wannacry.exe
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Size
23KB
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MD5
39aca11f467b0241f61077240211b799
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SHA1
fca8a96bd5855781925c6e7fae19af016bf73078
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SHA256
155ad5482ad0c1f2dc2c092e863ef3e968a6b563a919c8670cf1b855db3da269
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SHA512
cd369233ab4f413cfef3a032cbff758bf99d41f471a4032266eaec57fac6616e561bae18bb1c0bb8b751c8ca20e9d523e52d3e2cab8bc71cc8a98a27477b83e2
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SSDEEP
384:H3MLWHn3kI3fcSxlR2WpoMsmGJyr91Czxb5We3:zn3kIE69poMstyr9ixbwe3
Malware Config
Extracted
C:\Users\Admin\Desktop\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/2624-1-0x0000000000820000-0x000000000082C000-memory.dmp family_chaos behavioral1/files/0x0003000000011ba4-5.dat family_chaos behavioral1/memory/2644-7-0x00000000001F0000-0x00000000001FC000-memory.dmp family_chaos -
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 2948 bcdedit.exe 2640 bcdedit.exe -
pid Process 764 wbadmin.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\read_it.txt svchost.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2644 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) 34 IoCs
description ioc Process File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3294248377-1418901787-4083263181-1000\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\Windows\Start Menu\Programs\Maintenance\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\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\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\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\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\Accessories\System Tools\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\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\Start Menu\Programs\Accessories\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\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Contacts\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\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\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\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 2296 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1352 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2644 svchost.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 2624 2024-08-08_39aca11f467b0241f61077240211b799_chaos_destroyer_wannacry.exe 2624 2024-08-08_39aca11f467b0241f61077240211b799_chaos_destroyer_wannacry.exe 2624 2024-08-08_39aca11f467b0241f61077240211b799_chaos_destroyer_wannacry.exe 2644 svchost.exe 2644 svchost.exe 2644 svchost.exe 2644 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2624 2024-08-08_39aca11f467b0241f61077240211b799_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 2644 svchost.exe Token: SeBackupPrivilege 1780 vssvc.exe Token: SeRestorePrivilege 1780 vssvc.exe Token: SeAuditPrivilege 1780 vssvc.exe Token: SeIncreaseQuotaPrivilege 1768 WMIC.exe Token: SeSecurityPrivilege 1768 WMIC.exe Token: SeTakeOwnershipPrivilege 1768 WMIC.exe Token: SeLoadDriverPrivilege 1768 WMIC.exe Token: SeSystemProfilePrivilege 1768 WMIC.exe Token: SeSystemtimePrivilege 1768 WMIC.exe Token: SeProfSingleProcessPrivilege 1768 WMIC.exe Token: SeIncBasePriorityPrivilege 1768 WMIC.exe Token: SeCreatePagefilePrivilege 1768 WMIC.exe Token: SeBackupPrivilege 1768 WMIC.exe Token: SeRestorePrivilege 1768 WMIC.exe Token: SeShutdownPrivilege 1768 WMIC.exe Token: SeDebugPrivilege 1768 WMIC.exe Token: SeSystemEnvironmentPrivilege 1768 WMIC.exe Token: SeRemoteShutdownPrivilege 1768 WMIC.exe Token: SeUndockPrivilege 1768 WMIC.exe Token: SeManageVolumePrivilege 1768 WMIC.exe Token: 33 1768 WMIC.exe Token: 34 1768 WMIC.exe Token: 35 1768 WMIC.exe Token: SeIncreaseQuotaPrivilege 1768 WMIC.exe Token: SeSecurityPrivilege 1768 WMIC.exe Token: SeTakeOwnershipPrivilege 1768 WMIC.exe Token: SeLoadDriverPrivilege 1768 WMIC.exe Token: SeSystemProfilePrivilege 1768 WMIC.exe Token: SeSystemtimePrivilege 1768 WMIC.exe Token: SeProfSingleProcessPrivilege 1768 WMIC.exe Token: SeIncBasePriorityPrivilege 1768 WMIC.exe Token: SeCreatePagefilePrivilege 1768 WMIC.exe Token: SeBackupPrivilege 1768 WMIC.exe Token: SeRestorePrivilege 1768 WMIC.exe Token: SeShutdownPrivilege 1768 WMIC.exe Token: SeDebugPrivilege 1768 WMIC.exe Token: SeSystemEnvironmentPrivilege 1768 WMIC.exe Token: SeRemoteShutdownPrivilege 1768 WMIC.exe Token: SeUndockPrivilege 1768 WMIC.exe Token: SeManageVolumePrivilege 1768 WMIC.exe Token: 33 1768 WMIC.exe Token: 34 1768 WMIC.exe Token: 35 1768 WMIC.exe Token: SeBackupPrivilege 2188 wbengine.exe Token: SeRestorePrivilege 2188 wbengine.exe Token: SeSecurityPrivilege 2188 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2624 wrote to memory of 2644 2624 2024-08-08_39aca11f467b0241f61077240211b799_chaos_destroyer_wannacry.exe 30 PID 2624 wrote to memory of 2644 2624 2024-08-08_39aca11f467b0241f61077240211b799_chaos_destroyer_wannacry.exe 30 PID 2624 wrote to memory of 2644 2624 2024-08-08_39aca11f467b0241f61077240211b799_chaos_destroyer_wannacry.exe 30 PID 2644 wrote to memory of 2216 2644 svchost.exe 31 PID 2644 wrote to memory of 2216 2644 svchost.exe 31 PID 2644 wrote to memory of 2216 2644 svchost.exe 31 PID 2216 wrote to memory of 2296 2216 cmd.exe 33 PID 2216 wrote to memory of 2296 2216 cmd.exe 33 PID 2216 wrote to memory of 2296 2216 cmd.exe 33 PID 2216 wrote to memory of 1768 2216 cmd.exe 37 PID 2216 wrote to memory of 1768 2216 cmd.exe 37 PID 2216 wrote to memory of 1768 2216 cmd.exe 37 PID 2644 wrote to memory of 2988 2644 svchost.exe 39 PID 2644 wrote to memory of 2988 2644 svchost.exe 39 PID 2644 wrote to memory of 2988 2644 svchost.exe 39 PID 2988 wrote to memory of 2948 2988 cmd.exe 41 PID 2988 wrote to memory of 2948 2988 cmd.exe 41 PID 2988 wrote to memory of 2948 2988 cmd.exe 41 PID 2988 wrote to memory of 2640 2988 cmd.exe 42 PID 2988 wrote to memory of 2640 2988 cmd.exe 42 PID 2988 wrote to memory of 2640 2988 cmd.exe 42 PID 2644 wrote to memory of 2100 2644 svchost.exe 43 PID 2644 wrote to memory of 2100 2644 svchost.exe 43 PID 2644 wrote to memory of 2100 2644 svchost.exe 43 PID 2100 wrote to memory of 764 2100 cmd.exe 45 PID 2100 wrote to memory of 764 2100 cmd.exe 45 PID 2100 wrote to memory of 764 2100 cmd.exe 45 PID 2644 wrote to memory of 1352 2644 svchost.exe 49 PID 2644 wrote to memory of 1352 2644 svchost.exe 49 PID 2644 wrote to memory of 1352 2644 svchost.exe 49 -
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\2024-08-08_39aca11f467b0241f61077240211b799_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-08-08_39aca11f467b0241f61077240211b799_chaos_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2624 -
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:2644 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2216 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2296
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1768
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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:2988 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2948
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2640
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2100 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:764
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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:1352
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1780
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2188
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:1960
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:2176
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
23KB
MD539aca11f467b0241f61077240211b799
SHA1fca8a96bd5855781925c6e7fae19af016bf73078
SHA256155ad5482ad0c1f2dc2c092e863ef3e968a6b563a919c8670cf1b855db3da269
SHA512cd369233ab4f413cfef3a032cbff758bf99d41f471a4032266eaec57fac6616e561bae18bb1c0bb8b751c8ca20e9d523e52d3e2cab8bc71cc8a98a27477b83e2
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Filesize
964B
MD54217b8b83ce3c3f70029a056546f8fd0
SHA1487cdb5733d073a0427418888e8f7070fe782a03
SHA2567d767e907be373c680d1f7884d779588eb643bebb3f27bf3b5ed4864aa4d8121
SHA5122a58c99fa52f99c276e27eb98aef2ce1205f16d1e37b7e87eb69e9ecda22b578195a43f1a7f70fead6ba70421abf2f85c917551c191536eaf1f3011d3d24f740