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Analysis
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max time kernel
118s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
24/03/2024, 19:39
Behavioral task
behavioral1
Sample
2024-03-24_ee42b46e17aea48b2b2863870d550152_chaos_destroyer_wannacry.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-24_ee42b46e17aea48b2b2863870d550152_chaos_destroyer_wannacry.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-24_ee42b46e17aea48b2b2863870d550152_chaos_destroyer_wannacry.exe
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Size
31KB
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MD5
ee42b46e17aea48b2b2863870d550152
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SHA1
bc55e9feb8f4eb627e2848e0a3e350b176e70a48
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SHA256
af7f876a423f8223a333aaf0d59cbc4dce7ee93ae431a25f97ea5479cfbd2b2c
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SHA512
ed27eaf5f8a9dc547ebb74c06bd028bb2f0f0ed18de60e75a608487c3c17d197e6f73f0f9fede6f05b2224a38acd7707984e77fcf5bfc5251f0eff2bf9064902
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SSDEEP
768:7qo25O5p1r2sSiVM2r9JFkiUeCDY9Ogare:Wo2ErhVM2r93rCDwOLr
Malware Config
Extracted
C:\Users\Admin\Documents\README.txt
https://www.coinmama.com/
https://www.bitpanda.com/
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/2872-0-0x00000000000A0000-0x00000000000AC000-memory.dmp family_chaos behavioral1/files/0x000a000000012251-6.dat family_chaos behavioral1/memory/1356-7-0x00000000002F0000-0x00000000002FC000-memory.dmp family_chaos -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Detects command variations typically used by ransomware 3 IoCs
resource yara_rule behavioral1/memory/2872-0-0x00000000000A0000-0x00000000000AC000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral1/files/0x000a000000012251-6.dat INDICATOR_SUSPICIOUS_GENRansomware behavioral1/memory/1356-7-0x00000000002F0000-0x00000000002FC000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 756 bcdedit.exe 1648 bcdedit.exe -
pid Process 2220 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 Escape Rooms.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\README.txt Escape Rooms.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Escape Rooms.url Escape Rooms.exe -
Executes dropped EXE 1 IoCs
pid Process 1356 Escape Rooms.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 C:\Users\Public\Documents\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\Favorites\Links for United States\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\SendTo\Desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\Searches\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Administrative Tools\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Desktop.ini Escape Rooms.exe File opened for modification C:\Users\Public\Videos\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Public\Videos\Sample Videos\desktop.ini Escape Rooms.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3452737119-3959686427-228443150-1000\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\Videos\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Public\Music\Sample Music\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\Links\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\Music\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Public\Music\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Maintenance\Desktop.ini Escape Rooms.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\Documents\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\Desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini Escape Rooms.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Public\Desktop\desktop.ini Escape Rooms.exe File opened for modification C:\Users\Public\Pictures\desktop.ini Escape Rooms.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1944 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1136 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1356 Escape Rooms.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 2872 2024-03-24_ee42b46e17aea48b2b2863870d550152_chaos_destroyer_wannacry.exe 2872 2024-03-24_ee42b46e17aea48b2b2863870d550152_chaos_destroyer_wannacry.exe 2872 2024-03-24_ee42b46e17aea48b2b2863870d550152_chaos_destroyer_wannacry.exe 1356 Escape Rooms.exe 1356 Escape Rooms.exe 1356 Escape Rooms.exe 1356 Escape Rooms.exe 1356 Escape Rooms.exe 1356 Escape Rooms.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 2872 2024-03-24_ee42b46e17aea48b2b2863870d550152_chaos_destroyer_wannacry.exe Token: SeDebugPrivilege 1356 Escape Rooms.exe Token: SeBackupPrivilege 2684 vssvc.exe Token: SeRestorePrivilege 2684 vssvc.exe Token: SeAuditPrivilege 2684 vssvc.exe Token: SeIncreaseQuotaPrivilege 296 WMIC.exe Token: SeSecurityPrivilege 296 WMIC.exe Token: SeTakeOwnershipPrivilege 296 WMIC.exe Token: SeLoadDriverPrivilege 296 WMIC.exe Token: SeSystemProfilePrivilege 296 WMIC.exe Token: SeSystemtimePrivilege 296 WMIC.exe Token: SeProfSingleProcessPrivilege 296 WMIC.exe Token: SeIncBasePriorityPrivilege 296 WMIC.exe Token: SeCreatePagefilePrivilege 296 WMIC.exe Token: SeBackupPrivilege 296 WMIC.exe Token: SeRestorePrivilege 296 WMIC.exe Token: SeShutdownPrivilege 296 WMIC.exe Token: SeDebugPrivilege 296 WMIC.exe Token: SeSystemEnvironmentPrivilege 296 WMIC.exe Token: SeRemoteShutdownPrivilege 296 WMIC.exe Token: SeUndockPrivilege 296 WMIC.exe Token: SeManageVolumePrivilege 296 WMIC.exe Token: 33 296 WMIC.exe Token: 34 296 WMIC.exe Token: 35 296 WMIC.exe Token: SeIncreaseQuotaPrivilege 296 WMIC.exe Token: SeSecurityPrivilege 296 WMIC.exe Token: SeTakeOwnershipPrivilege 296 WMIC.exe Token: SeLoadDriverPrivilege 296 WMIC.exe Token: SeSystemProfilePrivilege 296 WMIC.exe Token: SeSystemtimePrivilege 296 WMIC.exe Token: SeProfSingleProcessPrivilege 296 WMIC.exe Token: SeIncBasePriorityPrivilege 296 WMIC.exe Token: SeCreatePagefilePrivilege 296 WMIC.exe Token: SeBackupPrivilege 296 WMIC.exe Token: SeRestorePrivilege 296 WMIC.exe Token: SeShutdownPrivilege 296 WMIC.exe Token: SeDebugPrivilege 296 WMIC.exe Token: SeSystemEnvironmentPrivilege 296 WMIC.exe Token: SeRemoteShutdownPrivilege 296 WMIC.exe Token: SeUndockPrivilege 296 WMIC.exe Token: SeManageVolumePrivilege 296 WMIC.exe Token: 33 296 WMIC.exe Token: 34 296 WMIC.exe Token: 35 296 WMIC.exe Token: SeBackupPrivilege 1332 wbengine.exe Token: SeRestorePrivilege 1332 wbengine.exe Token: SeSecurityPrivilege 1332 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 2872 wrote to memory of 1356 2872 2024-03-24_ee42b46e17aea48b2b2863870d550152_chaos_destroyer_wannacry.exe 28 PID 2872 wrote to memory of 1356 2872 2024-03-24_ee42b46e17aea48b2b2863870d550152_chaos_destroyer_wannacry.exe 28 PID 2872 wrote to memory of 1356 2872 2024-03-24_ee42b46e17aea48b2b2863870d550152_chaos_destroyer_wannacry.exe 28 PID 1356 wrote to memory of 2928 1356 Escape Rooms.exe 30 PID 1356 wrote to memory of 2928 1356 Escape Rooms.exe 30 PID 1356 wrote to memory of 2928 1356 Escape Rooms.exe 30 PID 2928 wrote to memory of 1944 2928 cmd.exe 32 PID 2928 wrote to memory of 1944 2928 cmd.exe 32 PID 2928 wrote to memory of 1944 2928 cmd.exe 32 PID 2928 wrote to memory of 296 2928 cmd.exe 35 PID 2928 wrote to memory of 296 2928 cmd.exe 35 PID 2928 wrote to memory of 296 2928 cmd.exe 35 PID 1356 wrote to memory of 1652 1356 Escape Rooms.exe 37 PID 1356 wrote to memory of 1652 1356 Escape Rooms.exe 37 PID 1356 wrote to memory of 1652 1356 Escape Rooms.exe 37 PID 1652 wrote to memory of 756 1652 cmd.exe 39 PID 1652 wrote to memory of 756 1652 cmd.exe 39 PID 1652 wrote to memory of 756 1652 cmd.exe 39 PID 1652 wrote to memory of 1648 1652 cmd.exe 40 PID 1652 wrote to memory of 1648 1652 cmd.exe 40 PID 1652 wrote to memory of 1648 1652 cmd.exe 40 PID 1356 wrote to memory of 2504 1356 Escape Rooms.exe 41 PID 1356 wrote to memory of 2504 1356 Escape Rooms.exe 41 PID 1356 wrote to memory of 2504 1356 Escape Rooms.exe 41 PID 2504 wrote to memory of 2220 2504 cmd.exe 43 PID 2504 wrote to memory of 2220 2504 cmd.exe 43 PID 2504 wrote to memory of 2220 2504 cmd.exe 43 PID 1356 wrote to memory of 1136 1356 Escape Rooms.exe 47 PID 1356 wrote to memory of 1136 1356 Escape Rooms.exe 47 PID 1356 wrote to memory of 1136 1356 Escape Rooms.exe 47 -
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\2024-03-24_ee42b46e17aea48b2b2863870d550152_chaos_destroyer_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-24_ee42b46e17aea48b2b2863870d550152_chaos_destroyer_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2872 -
C:\Users\Admin\AppData\Roaming\Escape Rooms.exe"C:\Users\Admin\AppData\Roaming\Escape Rooms.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:1356 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2928 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:1944
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:296
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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:1652 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:756
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C:\Windows\system32\bcdedit.exebcdedit /set {default} recoveryenabled no4⤵
- Modifies boot configuration data using bcdedit
PID:1648
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C wbadmin delete catalog -quiet3⤵
- Suspicious use of WriteProcessMemory
PID:2504 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2220
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Roaming\README.txt3⤵
- Opens file in notepad (likely ransom note)
PID:1136
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2684
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1332
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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:2428
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
31KB
MD5ee42b46e17aea48b2b2863870d550152
SHA1bc55e9feb8f4eb627e2848e0a3e350b176e70a48
SHA256af7f876a423f8223a333aaf0d59cbc4dce7ee93ae431a25f97ea5479cfbd2b2c
SHA512ed27eaf5f8a9dc547ebb74c06bd028bb2f0f0ed18de60e75a608487c3c17d197e6f73f0f9fede6f05b2224a38acd7707984e77fcf5bfc5251f0eff2bf9064902
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Filesize
1KB
MD57d5f698cb54adadbb3d7d57e439dc44e
SHA1ffc61325585a69e1778051cd1fd079c638d06814
SHA256cfe92414effc7475be21f9b8752a999435eb5fca9e23b07c634745b7e669dd37
SHA512fb595ab8f9e3449791c866ae47faedafbb9e12c20a25893759c17d09af472df6804915514581117a69edf2a717e80994ebdd958d694e36f4b8bf53c45056eee5