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Analysis
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max time kernel
117s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240729-en -
resource tags
arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system -
submitted
07/12/2024, 17:24
Behavioral task
behavioral1
Sample
2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe
Resource
win10v2004-20241007-en
General
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Target
2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe
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Size
22KB
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MD5
81da4689d58474d5628687d0c0f80247
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SHA1
e665e68f8f5525891a1f80f1e11005a9791747c3
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SHA256
bda399f853180c703a7329c66dd19fe620dc533edd7444a4844f25db07bc4c5b
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SHA512
40dfe5b0160af540c0773d30d6a4cca6f8fdb5e76bf03b706edbb8d1e597b46847594802ab82743cb21298751333f590163ade9a9b23f34b1ce9aa0a994ad04f
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SSDEEP
384:c3MLWHn3kI3fbLR5LZrdpRVgjudJ6r91Crxb1tQeP:0n3kIzt9tdpRmj+6r9SxbkeP
Malware Config
Extracted
C:\Users\Admin\Desktop\read_it.txt
1MCrfrWne7m1KLysxkoUv617djCB3y9ZjZ
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/2660-1-0x0000000000960000-0x000000000096C000-memory.dmp family_chaos behavioral1/files/0x000b0000000122cf-5.dat family_chaos behavioral1/memory/2788-7-0x00000000001B0000-0x00000000001BC000-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 2136 bcdedit.exe 2164 bcdedit.exe -
pid Process 2260 wbadmin.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\read_it.txt svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2788 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) 34 IoCs
description ioc Process 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\Accessories\Accessibility\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\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\Downloads\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\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\Administrative Tools\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\Sample Music\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\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Links\desktop.ini svchost.exe File opened for modification C:\Users\Public\Music\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\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\Favorites\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\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\Public\Desktop\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\Maintenance\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-2703099537-420551529-3771253338-1000\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 C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Searches\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\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 1104 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1056 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2788 svchost.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 2660 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 2660 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 2660 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 2788 svchost.exe 2788 svchost.exe 2788 svchost.exe 2788 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2660 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 2788 svchost.exe Token: SeBackupPrivilege 3000 vssvc.exe Token: SeRestorePrivilege 3000 vssvc.exe Token: SeAuditPrivilege 3000 vssvc.exe Token: SeIncreaseQuotaPrivilege 2384 WMIC.exe Token: SeSecurityPrivilege 2384 WMIC.exe Token: SeTakeOwnershipPrivilege 2384 WMIC.exe Token: SeLoadDriverPrivilege 2384 WMIC.exe Token: SeSystemProfilePrivilege 2384 WMIC.exe Token: SeSystemtimePrivilege 2384 WMIC.exe Token: SeProfSingleProcessPrivilege 2384 WMIC.exe Token: SeIncBasePriorityPrivilege 2384 WMIC.exe Token: SeCreatePagefilePrivilege 2384 WMIC.exe Token: SeBackupPrivilege 2384 WMIC.exe Token: SeRestorePrivilege 2384 WMIC.exe Token: SeShutdownPrivilege 2384 WMIC.exe Token: SeDebugPrivilege 2384 WMIC.exe Token: SeSystemEnvironmentPrivilege 2384 WMIC.exe Token: SeRemoteShutdownPrivilege 2384 WMIC.exe Token: SeUndockPrivilege 2384 WMIC.exe Token: SeManageVolumePrivilege 2384 WMIC.exe Token: 33 2384 WMIC.exe Token: 34 2384 WMIC.exe Token: 35 2384 WMIC.exe Token: SeIncreaseQuotaPrivilege 2384 WMIC.exe Token: SeSecurityPrivilege 2384 WMIC.exe Token: SeTakeOwnershipPrivilege 2384 WMIC.exe Token: SeLoadDriverPrivilege 2384 WMIC.exe Token: SeSystemProfilePrivilege 2384 WMIC.exe Token: SeSystemtimePrivilege 2384 WMIC.exe Token: SeProfSingleProcessPrivilege 2384 WMIC.exe Token: SeIncBasePriorityPrivilege 2384 WMIC.exe Token: SeCreatePagefilePrivilege 2384 WMIC.exe Token: SeBackupPrivilege 2384 WMIC.exe Token: SeRestorePrivilege 2384 WMIC.exe Token: SeShutdownPrivilege 2384 WMIC.exe Token: SeDebugPrivilege 2384 WMIC.exe Token: SeSystemEnvironmentPrivilege 2384 WMIC.exe Token: SeRemoteShutdownPrivilege 2384 WMIC.exe Token: SeUndockPrivilege 2384 WMIC.exe Token: SeManageVolumePrivilege 2384 WMIC.exe Token: 33 2384 WMIC.exe Token: 34 2384 WMIC.exe Token: 35 2384 WMIC.exe Token: SeBackupPrivilege 1900 wbengine.exe Token: SeRestorePrivilege 1900 wbengine.exe Token: SeSecurityPrivilege 1900 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2660 wrote to memory of 2788 2660 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 30 PID 2660 wrote to memory of 2788 2660 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 30 PID 2660 wrote to memory of 2788 2660 2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe 30 PID 2788 wrote to memory of 1904 2788 svchost.exe 31 PID 2788 wrote to memory of 1904 2788 svchost.exe 31 PID 2788 wrote to memory of 1904 2788 svchost.exe 31 PID 1904 wrote to memory of 1104 1904 cmd.exe 33 PID 1904 wrote to memory of 1104 1904 cmd.exe 33 PID 1904 wrote to memory of 1104 1904 cmd.exe 33 PID 1904 wrote to memory of 2384 1904 cmd.exe 37 PID 1904 wrote to memory of 2384 1904 cmd.exe 37 PID 1904 wrote to memory of 2384 1904 cmd.exe 37 PID 2788 wrote to memory of 2028 2788 svchost.exe 39 PID 2788 wrote to memory of 2028 2788 svchost.exe 39 PID 2788 wrote to memory of 2028 2788 svchost.exe 39 PID 2028 wrote to memory of 2136 2028 cmd.exe 41 PID 2028 wrote to memory of 2136 2028 cmd.exe 41 PID 2028 wrote to memory of 2136 2028 cmd.exe 41 PID 2028 wrote to memory of 2164 2028 cmd.exe 42 PID 2028 wrote to memory of 2164 2028 cmd.exe 42 PID 2028 wrote to memory of 2164 2028 cmd.exe 42 PID 2788 wrote to memory of 2112 2788 svchost.exe 43 PID 2788 wrote to memory of 2112 2788 svchost.exe 43 PID 2788 wrote to memory of 2112 2788 svchost.exe 43 PID 2112 wrote to memory of 2260 2112 cmd.exe 45 PID 2112 wrote to memory of 2260 2112 cmd.exe 45 PID 2112 wrote to memory of 2260 2112 cmd.exe 45 PID 2788 wrote to memory of 1056 2788 svchost.exe 49 PID 2788 wrote to memory of 1056 2788 svchost.exe 49 PID 2788 wrote to memory of 1056 2788 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\2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-12-07_81da4689d58474d5628687d0c0f80247_chaos_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2660 -
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:2788 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:1904 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1104
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2384
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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:2028 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:2136
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:2164
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2112 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2260
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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:1056
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3000
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1900
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:2276
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1256
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
22KB
MD581da4689d58474d5628687d0c0f80247
SHA1e665e68f8f5525891a1f80f1e11005a9791747c3
SHA256bda399f853180c703a7329c66dd19fe620dc533edd7444a4844f25db07bc4c5b
SHA51240dfe5b0160af540c0773d30d6a4cca6f8fdb5e76bf03b706edbb8d1e597b46847594802ab82743cb21298751333f590163ade9a9b23f34b1ce9aa0a994ad04f
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Filesize
854B
MD530dbd9beaecba46ffb68b2ba7167542c
SHA1403bbce281174af6acf794be6b5cd83e864ba42a
SHA2567c72579a3d1e9c78e0385c6ceb96e54411b5be12e5eb9b9386878c6356d8a506
SHA51271f9036e9b637ddb8c1025f5df0a8c631bfb13823ab4c3f70b8b1d854610ab1053d0a15cacee2f84e93ad21428e3dbe34fe294ebbaed8939c2e5549526a5d920