Analysis
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max time kernel
118s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
14-03-2024 23:38
Behavioral task
behavioral1
Sample
2024-03-14_77a0989f046d5404700debc97727ca2b_wannacry.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-14_77a0989f046d5404700debc97727ca2b_wannacry.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-14_77a0989f046d5404700debc97727ca2b_wannacry.exe
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Size
223KB
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MD5
77a0989f046d5404700debc97727ca2b
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SHA1
d0bdfdc67862e0bfa491d5d4a3313382a7921625
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SHA256
99b88ce97064536c370e630245018b15bf87c0c1113e2c4c95bfb7dc1078b647
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SHA512
f918e3bf1d488cb77f06ede3d565396b8a6391f372e79fd6d148e1afec311143332bd91cb6d3f05fd6b348d40bfd4ae02adc79e20c6031aaa08c1d29d5b83aa9
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SSDEEP
6144:EU9r9SAYFCtntIVprUPvEefILCrSK3FK+Z:EUDYFCtntIVqPvCLCrSK1K+Z
Malware Config
Extracted
C:\Users\Admin\Desktop\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/1660-0-0x0000000000C50000-0x0000000000C8E000-memory.dmp family_chaos behavioral1/files/0x000a000000012251-5.dat family_chaos behavioral1/memory/2980-7-0x0000000000FC0000-0x0000000000FFE000-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/1660-0-0x0000000000C50000-0x0000000000C8E000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware behavioral1/files/0x000a000000012251-5.dat INDICATOR_SUSPICIOUS_GENRansomware behavioral1/memory/2980-7-0x0000000000FC0000-0x0000000000FFE000-memory.dmp INDICATOR_SUSPICIOUS_GENRansomware -
Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs
pid Process 2164 bcdedit.exe 1964 bcdedit.exe -
pid Process 2652 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 2980 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 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\Admin\AppData\Roaming\Microsoft\Windows\SendTo\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\Windows\Start Menu\Programs\Maintenance\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\Public\Videos\Sample Videos\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Pictures\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\Internet Explorer\Quick Launch\User Pinned\TaskBar\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\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\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\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\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\Desktop.ini svchost.exe File opened for modification C:\Users\Public\Documents\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini svchost.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Libraries\desktop.ini svchost.exe File opened for modification F:\$RECYCLE.BIN\S-1-5-21-3452737119-3959686427-228443150-1000\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\Windows\Start Menu\Programs\Administrative Tools\desktop.ini svchost.exe File opened for modification C:\Users\Public\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\Internet Explorer\Quick Launch\desktop.ini svchost.exe File opened for modification C:\Users\Public\Videos\desktop.ini svchost.exe File opened for modification C:\Users\Public\Desktop\desktop.ini svchost.exe File opened for modification C:\Users\Admin\Music\desktop.ini svchost.exe File opened for modification C:\Users\Public\Pictures\Sample Pictures\desktop.ini svchost.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\bbhl58dot.jpg" svchost.exe Set value (str) \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.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 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2996 vssadmin.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1904 NOTEPAD.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2980 svchost.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
pid Process 1660 2024-03-14_77a0989f046d5404700debc97727ca2b_wannacry.exe 1660 2024-03-14_77a0989f046d5404700debc97727ca2b_wannacry.exe 2980 svchost.exe 2980 svchost.exe 2980 svchost.exe 2980 svchost.exe -
Suspicious use of AdjustPrivilegeToken 48 IoCs
description pid Process Token: SeDebugPrivilege 1660 2024-03-14_77a0989f046d5404700debc97727ca2b_wannacry.exe Token: SeDebugPrivilege 2980 svchost.exe Token: SeBackupPrivilege 1868 vssvc.exe Token: SeRestorePrivilege 1868 vssvc.exe Token: SeAuditPrivilege 1868 vssvc.exe Token: SeIncreaseQuotaPrivilege 1748 WMIC.exe Token: SeSecurityPrivilege 1748 WMIC.exe Token: SeTakeOwnershipPrivilege 1748 WMIC.exe Token: SeLoadDriverPrivilege 1748 WMIC.exe Token: SeSystemProfilePrivilege 1748 WMIC.exe Token: SeSystemtimePrivilege 1748 WMIC.exe Token: SeProfSingleProcessPrivilege 1748 WMIC.exe Token: SeIncBasePriorityPrivilege 1748 WMIC.exe Token: SeCreatePagefilePrivilege 1748 WMIC.exe Token: SeBackupPrivilege 1748 WMIC.exe Token: SeRestorePrivilege 1748 WMIC.exe Token: SeShutdownPrivilege 1748 WMIC.exe Token: SeDebugPrivilege 1748 WMIC.exe Token: SeSystemEnvironmentPrivilege 1748 WMIC.exe Token: SeRemoteShutdownPrivilege 1748 WMIC.exe Token: SeUndockPrivilege 1748 WMIC.exe Token: SeManageVolumePrivilege 1748 WMIC.exe Token: 33 1748 WMIC.exe Token: 34 1748 WMIC.exe Token: 35 1748 WMIC.exe Token: SeIncreaseQuotaPrivilege 1748 WMIC.exe Token: SeSecurityPrivilege 1748 WMIC.exe Token: SeTakeOwnershipPrivilege 1748 WMIC.exe Token: SeLoadDriverPrivilege 1748 WMIC.exe Token: SeSystemProfilePrivilege 1748 WMIC.exe Token: SeSystemtimePrivilege 1748 WMIC.exe Token: SeProfSingleProcessPrivilege 1748 WMIC.exe Token: SeIncBasePriorityPrivilege 1748 WMIC.exe Token: SeCreatePagefilePrivilege 1748 WMIC.exe Token: SeBackupPrivilege 1748 WMIC.exe Token: SeRestorePrivilege 1748 WMIC.exe Token: SeShutdownPrivilege 1748 WMIC.exe Token: SeDebugPrivilege 1748 WMIC.exe Token: SeSystemEnvironmentPrivilege 1748 WMIC.exe Token: SeRemoteShutdownPrivilege 1748 WMIC.exe Token: SeUndockPrivilege 1748 WMIC.exe Token: SeManageVolumePrivilege 1748 WMIC.exe Token: 33 1748 WMIC.exe Token: 34 1748 WMIC.exe Token: 35 1748 WMIC.exe Token: SeBackupPrivilege 688 wbengine.exe Token: SeRestorePrivilege 688 wbengine.exe Token: SeSecurityPrivilege 688 wbengine.exe -
Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1660 wrote to memory of 2980 1660 2024-03-14_77a0989f046d5404700debc97727ca2b_wannacry.exe 28 PID 1660 wrote to memory of 2980 1660 2024-03-14_77a0989f046d5404700debc97727ca2b_wannacry.exe 28 PID 1660 wrote to memory of 2980 1660 2024-03-14_77a0989f046d5404700debc97727ca2b_wannacry.exe 28 PID 2980 wrote to memory of 2916 2980 svchost.exe 29 PID 2980 wrote to memory of 2916 2980 svchost.exe 29 PID 2980 wrote to memory of 2916 2980 svchost.exe 29 PID 2916 wrote to memory of 2996 2916 cmd.exe 31 PID 2916 wrote to memory of 2996 2916 cmd.exe 31 PID 2916 wrote to memory of 2996 2916 cmd.exe 31 PID 2916 wrote to memory of 1748 2916 cmd.exe 35 PID 2916 wrote to memory of 1748 2916 cmd.exe 35 PID 2916 wrote to memory of 1748 2916 cmd.exe 35 PID 2980 wrote to memory of 2460 2980 svchost.exe 37 PID 2980 wrote to memory of 2460 2980 svchost.exe 37 PID 2980 wrote to memory of 2460 2980 svchost.exe 37 PID 2460 wrote to memory of 1964 2460 cmd.exe 39 PID 2460 wrote to memory of 1964 2460 cmd.exe 39 PID 2460 wrote to memory of 1964 2460 cmd.exe 39 PID 2460 wrote to memory of 2164 2460 cmd.exe 40 PID 2460 wrote to memory of 2164 2460 cmd.exe 40 PID 2460 wrote to memory of 2164 2460 cmd.exe 40 PID 2980 wrote to memory of 2212 2980 svchost.exe 41 PID 2980 wrote to memory of 2212 2980 svchost.exe 41 PID 2980 wrote to memory of 2212 2980 svchost.exe 41 PID 2212 wrote to memory of 2652 2212 cmd.exe 43 PID 2212 wrote to memory of 2652 2212 cmd.exe 43 PID 2212 wrote to memory of 2652 2212 cmd.exe 43 PID 2980 wrote to memory of 1904 2980 svchost.exe 47 PID 2980 wrote to memory of 1904 2980 svchost.exe 47 PID 2980 wrote to memory of 1904 2980 svchost.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\2024-03-14_77a0989f046d5404700debc97727ca2b_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-14_77a0989f046d5404700debc97727ca2b_wannacry.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1660 -
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)
- Sets desktop wallpaper using registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2980 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete3⤵
- Suspicious use of WriteProcessMemory
PID:2916 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet4⤵
- Interacts with shadow copies
PID:2996
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C:\Windows\System32\Wbem\WMIC.exewmic shadowcopy delete4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1748
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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:2460 -
C:\Windows\system32\bcdedit.exebcdedit /set {default} bootstatuspolicy ignoreallfailures4⤵
- Modifies boot configuration data using bcdedit
PID:1964
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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:2212 -
C:\Windows\system32\wbadmin.exewbadmin delete catalog -quiet4⤵
- Deletes backup catalog
PID:2652
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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:1904
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1868
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C:\Windows\system32\wbengine.exe"C:\Windows\system32\wbengine.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
PID:688
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C:\Windows\System32\vdsldr.exeC:\Windows\System32\vdsldr.exe -Embedding1⤵PID:956
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C:\Windows\System32\vds.exeC:\Windows\System32\vds.exe1⤵PID:1416
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
223KB
MD577a0989f046d5404700debc97727ca2b
SHA1d0bdfdc67862e0bfa491d5d4a3313382a7921625
SHA25699b88ce97064536c370e630245018b15bf87c0c1113e2c4c95bfb7dc1078b647
SHA512f918e3bf1d488cb77f06ede3d565396b8a6391f372e79fd6d148e1afec311143332bd91cb6d3f05fd6b348d40bfd4ae02adc79e20c6031aaa08c1d29d5b83aa9
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Filesize
1KB
MD5ea03cbb2fdf2dc96252b579612602225
SHA1ac9ceff3c368f7409b9a7201f62fa92eded4da51
SHA256e4f0c335d1ffc3ed4a32ae4aee294c9652f67a765fbaaad1f90e0540d25ed565
SHA5121388a3f740f84541f8a8c0298bfe8b71f03d86a71174f97a68edcb4bdca0f467d6823b94314fa54547451c3ec4f6bc2228d74bf7537acf7c2dfb9f5a2d398051