Resubmissions
06-08-2024 18:54
240806-xkfalsxckp 1006-08-2024 15:17
240806-spgxsawekf 1006-08-2024 15:16
240806-snyh5swejf 1006-08-2024 15:15
240806-smzptawdph 1006-08-2024 14:54
240806-r9xnaswbjb 1006-08-2024 01:49
240806-b88feazcka 10Analysis
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max time kernel
144s -
max time network
135s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system -
submitted
06-08-2024 18:54
Static task
static1
Behavioral task
behavioral1
Sample
WannaCry.exe
Resource
win10-20240404-en
General
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Target
WannaCry.exe
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Size
224KB
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MD5
5c7fb0927db37372da25f270708103a2
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SHA1
120ed9279d85cbfa56e5b7779ffa7162074f7a29
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SHA256
be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844
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SHA512
a15f97fad744ccf5f620e5aabb81f48507327b898a9aa4287051464019e0f89224c484e9691812e166471af9beaddcfc3deb2ba878658761f4800663beef7206
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SSDEEP
3072:Y059femWRwTs/dbelj0X8/j84pcRXPlU3Upt3or4H84lK8PtpLzLsR/EfcZ:+5RwTs/dSXj84mRXPemxdBlPvLzLeZ
Malware Config
Extracted
C:\Users\Admin\AppData\Local\Temp\!Please Read Me!.txt
wannacry
15zGqZCTcys6eCjDkE3DypCjXi6QWRV6V1
Signatures
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Wannacry
WannaCry is a ransomware cryptoworm.
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Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Drops startup file 2 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SD7878.tmp WannaCry.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SD787F.tmp WannaCry.exe -
Executes dropped EXE 4 IoCs
pid Process 1592 !WannaDecryptor!.exe 2140 !WannaDecryptor!.exe 1620 !WannaDecryptor!.exe 876 !WannaDecryptor!.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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft Update Task Scheduler = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\WannaCry.exe\" /r" WannaCry.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\!WannaCryptor!.bmp" !WannaDecryptor!.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 15 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language vssadmin.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WMIC.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cscript.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WannaCry.exe -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 3120 vssadmin.exe -
Kills process with taskkill 4 IoCs
pid Process 2508 taskkill.exe 4336 taskkill.exe 800 taskkill.exe 2544 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 49 IoCs
description pid Process Token: SeDebugPrivilege 4336 taskkill.exe Token: SeDebugPrivilege 800 taskkill.exe Token: SeDebugPrivilege 2508 taskkill.exe Token: SeDebugPrivilege 2544 taskkill.exe Token: SeBackupPrivilege 4588 vssvc.exe Token: SeRestorePrivilege 4588 vssvc.exe Token: SeAuditPrivilege 4588 vssvc.exe Token: SeIncreaseQuotaPrivilege 4544 WMIC.exe Token: SeSecurityPrivilege 4544 WMIC.exe Token: SeTakeOwnershipPrivilege 4544 WMIC.exe Token: SeLoadDriverPrivilege 4544 WMIC.exe Token: SeSystemProfilePrivilege 4544 WMIC.exe Token: SeSystemtimePrivilege 4544 WMIC.exe Token: SeProfSingleProcessPrivilege 4544 WMIC.exe Token: SeIncBasePriorityPrivilege 4544 WMIC.exe Token: SeCreatePagefilePrivilege 4544 WMIC.exe Token: SeBackupPrivilege 4544 WMIC.exe Token: SeRestorePrivilege 4544 WMIC.exe Token: SeShutdownPrivilege 4544 WMIC.exe Token: SeDebugPrivilege 4544 WMIC.exe Token: SeSystemEnvironmentPrivilege 4544 WMIC.exe Token: SeRemoteShutdownPrivilege 4544 WMIC.exe Token: SeUndockPrivilege 4544 WMIC.exe Token: SeManageVolumePrivilege 4544 WMIC.exe Token: 33 4544 WMIC.exe Token: 34 4544 WMIC.exe Token: 35 4544 WMIC.exe Token: 36 4544 WMIC.exe Token: SeIncreaseQuotaPrivilege 4544 WMIC.exe Token: SeSecurityPrivilege 4544 WMIC.exe Token: SeTakeOwnershipPrivilege 4544 WMIC.exe Token: SeLoadDriverPrivilege 4544 WMIC.exe Token: SeSystemProfilePrivilege 4544 WMIC.exe Token: SeSystemtimePrivilege 4544 WMIC.exe Token: SeProfSingleProcessPrivilege 4544 WMIC.exe Token: SeIncBasePriorityPrivilege 4544 WMIC.exe Token: SeCreatePagefilePrivilege 4544 WMIC.exe Token: SeBackupPrivilege 4544 WMIC.exe Token: SeRestorePrivilege 4544 WMIC.exe Token: SeShutdownPrivilege 4544 WMIC.exe Token: SeDebugPrivilege 4544 WMIC.exe Token: SeSystemEnvironmentPrivilege 4544 WMIC.exe Token: SeRemoteShutdownPrivilege 4544 WMIC.exe Token: SeUndockPrivilege 4544 WMIC.exe Token: SeManageVolumePrivilege 4544 WMIC.exe Token: 33 4544 WMIC.exe Token: 34 4544 WMIC.exe Token: 35 4544 WMIC.exe Token: 36 4544 WMIC.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 1592 !WannaDecryptor!.exe 1592 !WannaDecryptor!.exe 2140 !WannaDecryptor!.exe 2140 !WannaDecryptor!.exe 1620 !WannaDecryptor!.exe 1620 !WannaDecryptor!.exe 876 !WannaDecryptor!.exe 876 !WannaDecryptor!.exe -
Suspicious use of WriteProcessMemory 42 IoCs
description pid Process procid_target PID 3616 wrote to memory of 2088 3616 WannaCry.exe 72 PID 3616 wrote to memory of 2088 3616 WannaCry.exe 72 PID 3616 wrote to memory of 2088 3616 WannaCry.exe 72 PID 2088 wrote to memory of 5060 2088 cmd.exe 74 PID 2088 wrote to memory of 5060 2088 cmd.exe 74 PID 2088 wrote to memory of 5060 2088 cmd.exe 74 PID 3616 wrote to memory of 1592 3616 WannaCry.exe 75 PID 3616 wrote to memory of 1592 3616 WannaCry.exe 75 PID 3616 wrote to memory of 1592 3616 WannaCry.exe 75 PID 3616 wrote to memory of 2508 3616 WannaCry.exe 76 PID 3616 wrote to memory of 2508 3616 WannaCry.exe 76 PID 3616 wrote to memory of 2508 3616 WannaCry.exe 76 PID 3616 wrote to memory of 2544 3616 WannaCry.exe 77 PID 3616 wrote to memory of 2544 3616 WannaCry.exe 77 PID 3616 wrote to memory of 2544 3616 WannaCry.exe 77 PID 3616 wrote to memory of 800 3616 WannaCry.exe 78 PID 3616 wrote to memory of 800 3616 WannaCry.exe 78 PID 3616 wrote to memory of 800 3616 WannaCry.exe 78 PID 3616 wrote to memory of 4336 3616 WannaCry.exe 79 PID 3616 wrote to memory of 4336 3616 WannaCry.exe 79 PID 3616 wrote to memory of 4336 3616 WannaCry.exe 79 PID 3616 wrote to memory of 2140 3616 WannaCry.exe 87 PID 3616 wrote to memory of 2140 3616 WannaCry.exe 87 PID 3616 wrote to memory of 2140 3616 WannaCry.exe 87 PID 3616 wrote to memory of 1088 3616 WannaCry.exe 88 PID 3616 wrote to memory of 1088 3616 WannaCry.exe 88 PID 3616 wrote to memory of 1088 3616 WannaCry.exe 88 PID 1088 wrote to memory of 1620 1088 cmd.exe 90 PID 1088 wrote to memory of 1620 1088 cmd.exe 90 PID 1088 wrote to memory of 1620 1088 cmd.exe 90 PID 3616 wrote to memory of 876 3616 WannaCry.exe 91 PID 3616 wrote to memory of 876 3616 WannaCry.exe 91 PID 3616 wrote to memory of 876 3616 WannaCry.exe 91 PID 1620 wrote to memory of 1612 1620 !WannaDecryptor!.exe 92 PID 1620 wrote to memory of 1612 1620 !WannaDecryptor!.exe 92 PID 1620 wrote to memory of 1612 1620 !WannaDecryptor!.exe 92 PID 1612 wrote to memory of 3120 1612 cmd.exe 94 PID 1612 wrote to memory of 3120 1612 cmd.exe 94 PID 1612 wrote to memory of 3120 1612 cmd.exe 94 PID 1612 wrote to memory of 4544 1612 cmd.exe 96 PID 1612 wrote to memory of 4544 1612 cmd.exe 96 PID 1612 wrote to memory of 4544 1612 cmd.exe 96 -
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\WannaCry.exe"C:\Users\Admin\AppData\Local\Temp\WannaCry.exe"1⤵
- Drops startup file
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3616 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c 172441722970476.bat2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2088 -
C:\Windows\SysWOW64\cscript.execscript //nologo c.vbs3⤵
- System Location Discovery: System Language Discovery
PID:5060
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C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe f2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:1592
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C:\Windows\SysWOW64\taskkill.exetaskkill /f /im MSExchange*2⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2508
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C:\Windows\SysWOW64\taskkill.exetaskkill /f /im Microsoft.Exchange.*2⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2544
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C:\Windows\SysWOW64\taskkill.exetaskkill /f /im sqlserver.exe2⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:800
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C:\Windows\SysWOW64\taskkill.exetaskkill /f /im sqlwriter.exe2⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4336
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C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe c2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:2140
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C:\Windows\SysWOW64\cmd.execmd.exe /c start /b !WannaDecryptor!.exe v2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1088 -
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe v3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1620 -
C:\Windows\SysWOW64\cmd.execmd.exe /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet4⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1612 -
C:\Windows\SysWOW64\vssadmin.exevssadmin delete shadows /all /quiet5⤵
- System Location Discovery: System Language Discovery
- Interacts with shadow copies
PID:3120
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic shadowcopy delete5⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4544
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C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe2⤵
- Executes dropped EXE
- Sets desktop wallpaper using registry
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:876
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4588
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
2File Deletion
2Modify Registry
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
797B
MD5afa18cf4aa2660392111763fb93a8c3d
SHA1c219a3654a5f41ce535a09f2a188a464c3f5baf5
SHA256227082c719fd4394c1f2311a0877d8a302c5b092bcc49f853a5cf3d2945f42b0
SHA5124161f250d59b7d4d4a6c4f16639d66d21b2a9606de956d22ec00bedb006643fedbbb8e4cde9f6c0c977285918648314883ca91f3442d1125593bf2605f2d5c6b
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Filesize
1KB
MD5712edcc3337ea3261aef4b452ad5f3f8
SHA1ab34403178864e33adcf973eaba8adabebfbf308
SHA2567d1fb64c722996fea6ddb6da5e3e89ba338b28c2e3bfe16d715979081c7882fd
SHA512421ebb44b20dece63184e1dbce832740fe4e5dd60e69a39146c2ac7c9d9ccc1984f69ee908d2ee08fa245c1a4268877fbec220f340e1a7df096321f22d99db8c
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Filesize
136B
MD505ff23aa0a5f52871c98f0fbb759d714
SHA196b9a4edc3d5ffbb6665a7275648874833d7b064
SHA256b6e0f07c0b9df4151ea1036bcc207ccef9909582322ca5f8b8204751dacf0477
SHA5121883222c07a82e3e4baeecc245557e63a70622b9e59dfb6ab21a2689b64ca895bbcc95103d69f9331e25cb465639da97d424dd26750558bdf4e48c42f2cc9d55
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Filesize
136B
MD50cc119e12d864948a5aa7a5aa81cf4e0
SHA17f9c978806b4d7604d6be407c5e799b689046153
SHA256b70657b7c94cbc39d79b967173584944c1ff12388f478b20d86f69256b5f4fd5
SHA512427fa589b6e6557393518bed1d34abe5c30ce5b1b08d6c5afc687e87dab52c9116c069f371f73cd7e8fda5e044481077813ae9a74389345eae736c5b3c75d26a
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Filesize
136B
MD5c1859e0cdc3ac8557a1ab57268ccd0c5
SHA1e411cfe1571b1bfd52e23eddd01b3a797f5cd64c
SHA256cfeba031c2e17f7e37765565c15adaa8dd92a5eeea8e65f84d879b7239cf6821
SHA512f1a2b67a533dc06d2ecc31d7779360fb9409f0be69a0efb69c82996715f82ac9cd9f07c0f7206ab3449fbd457ebac460c540866786d984688a93d223fd71c530
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Filesize
336B
MD53540e056349c6972905dc9706cd49418
SHA1492c20442d34d45a6d6790c720349b11ec591cde
SHA25673872a89440a2cba9d22bf4961c3d499ea2c72979c30c455f942374292fedadc
SHA512c949d147100aef59e382c03abf7b162ae62a4d43456eebd730fbedcf5f95f5e1a24f6e349690d52d75331878a6ee8f6b88a7162ee9cf2a49e142196b12d0133c
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Filesize
219B
MD55f6d40ca3c34b470113ed04d06a88ff4
SHA150629e7211ae43e32060686d6be17ebd492fd7aa
SHA2560fb5039a2fe7e90cdf3f22140d7f2103f94689b15609efe0edcc8430dd772fc1
SHA5124d4aa1abd2c9183202fd3f0a65b37f07ee0166ba6561f094c13c8ea59752c7bdd960e37c49583746d4464bc3b1dc0b63a1fe36a37ce7e5709cd76ed433befe35
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Filesize
628B
MD53a51b1959bf97618bcb83bbaa84c7c53
SHA1b476fcf901aed585514f466ff207308d35fe886f
SHA25617e9f81681d4240b0bafa3f1d0d35ed72d630aa5279b8248f3fb5750c1ef947e
SHA5129f7e766062fec724195ed62f820bf71639323d00d56ef9dfeee4e096eee4440e679f7e72b0211813655ee0cfccc024c5a277c9bcede02a02c03c5d31b1691530
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Filesize
42KB
MD5980b08bac152aff3f9b0136b616affa5
SHA12a9c9601ea038f790cc29379c79407356a3d25a3
SHA256402046ada270528c9ac38bbfa0152836fe30fb8e12192354e53b8397421430d9
SHA512100cda1f795781042b012498afd783fd6ff03b0068dbd07b2c2e163cd95e6c6e00755ce16b02b017693c9febc149ed02df9df9b607e2b9cca4b07e5bd420f496
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Filesize
236KB
MD5cf1416074cd7791ab80a18f9e7e219d9
SHA1276d2ec82c518d887a8a3608e51c56fa28716ded
SHA25678e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
SHA5120bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5