Analysis
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max time kernel
148s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
10-09-2024 02:24
Static task
static1
Behavioral task
behavioral1
Sample
yourmom.exe
Resource
win7-20240903-en
General
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Target
yourmom.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\Documents\!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\~SDECE9.tmp yourmom.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SDECED.tmp yourmom.exe -
Executes dropped EXE 4 IoCs
pid Process 2644 !WannaDecryptor!.exe 2636 !WannaDecryptor!.exe 2624 !WannaDecryptor!.exe 2800 !WannaDecryptor!.exe -
Loads dropped DLL 9 IoCs
pid Process 2688 cscript.exe 1916 yourmom.exe 1916 yourmom.exe 1916 yourmom.exe 1916 yourmom.exe 1572 cmd.exe 1572 cmd.exe 1916 yourmom.exe 1916 yourmom.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\\yourmom.exe\" /r" yourmom.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\!WannaCryptor!.bmp" !WannaDecryptor!.exe Set value (str) \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg" !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 16 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 cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language vssadmin.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language yourmom.exe 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 !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language mshta.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 cscript.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WMIC.exe -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2668 vssadmin.exe -
Kills process with taskkill 4 IoCs
pid Process 1748 taskkill.exe 1672 taskkill.exe 1688 taskkill.exe 1032 taskkill.exe -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Internet Explorer\Main mshta.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_Classes\Local Settings rundll32.exe -
Suspicious use of AdjustPrivilegeToken 47 IoCs
description pid Process Token: SeDebugPrivilege 1032 taskkill.exe Token: SeDebugPrivilege 1688 taskkill.exe Token: SeDebugPrivilege 1748 taskkill.exe Token: SeDebugPrivilege 1672 taskkill.exe Token: SeBackupPrivilege 2748 vssvc.exe Token: SeRestorePrivilege 2748 vssvc.exe Token: SeAuditPrivilege 2748 vssvc.exe Token: SeIncreaseQuotaPrivilege 2808 WMIC.exe Token: SeSecurityPrivilege 2808 WMIC.exe Token: SeTakeOwnershipPrivilege 2808 WMIC.exe Token: SeLoadDriverPrivilege 2808 WMIC.exe Token: SeSystemProfilePrivilege 2808 WMIC.exe Token: SeSystemtimePrivilege 2808 WMIC.exe Token: SeProfSingleProcessPrivilege 2808 WMIC.exe Token: SeIncBasePriorityPrivilege 2808 WMIC.exe Token: SeCreatePagefilePrivilege 2808 WMIC.exe Token: SeBackupPrivilege 2808 WMIC.exe Token: SeRestorePrivilege 2808 WMIC.exe Token: SeShutdownPrivilege 2808 WMIC.exe Token: SeDebugPrivilege 2808 WMIC.exe Token: SeSystemEnvironmentPrivilege 2808 WMIC.exe Token: SeRemoteShutdownPrivilege 2808 WMIC.exe Token: SeUndockPrivilege 2808 WMIC.exe Token: SeManageVolumePrivilege 2808 WMIC.exe Token: 33 2808 WMIC.exe Token: 34 2808 WMIC.exe Token: 35 2808 WMIC.exe Token: SeIncreaseQuotaPrivilege 2808 WMIC.exe Token: SeSecurityPrivilege 2808 WMIC.exe Token: SeTakeOwnershipPrivilege 2808 WMIC.exe Token: SeLoadDriverPrivilege 2808 WMIC.exe Token: SeSystemProfilePrivilege 2808 WMIC.exe Token: SeSystemtimePrivilege 2808 WMIC.exe Token: SeProfSingleProcessPrivilege 2808 WMIC.exe Token: SeIncBasePriorityPrivilege 2808 WMIC.exe Token: SeCreatePagefilePrivilege 2808 WMIC.exe Token: SeBackupPrivilege 2808 WMIC.exe Token: SeRestorePrivilege 2808 WMIC.exe Token: SeShutdownPrivilege 2808 WMIC.exe Token: SeDebugPrivilege 2808 WMIC.exe Token: SeSystemEnvironmentPrivilege 2808 WMIC.exe Token: SeRemoteShutdownPrivilege 2808 WMIC.exe Token: SeUndockPrivilege 2808 WMIC.exe Token: SeManageVolumePrivilege 2808 WMIC.exe Token: 33 2808 WMIC.exe Token: 34 2808 WMIC.exe Token: 35 2808 WMIC.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2800 !WannaDecryptor!.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 2644 !WannaDecryptor!.exe 2644 !WannaDecryptor!.exe 2636 !WannaDecryptor!.exe 2636 !WannaDecryptor!.exe 2624 !WannaDecryptor!.exe 2624 !WannaDecryptor!.exe 2800 !WannaDecryptor!.exe 2800 !WannaDecryptor!.exe -
Suspicious use of WriteProcessMemory 56 IoCs
description pid Process procid_target PID 1916 wrote to memory of 3056 1916 yourmom.exe 31 PID 1916 wrote to memory of 3056 1916 yourmom.exe 31 PID 1916 wrote to memory of 3056 1916 yourmom.exe 31 PID 1916 wrote to memory of 3056 1916 yourmom.exe 31 PID 3056 wrote to memory of 2688 3056 cmd.exe 33 PID 3056 wrote to memory of 2688 3056 cmd.exe 33 PID 3056 wrote to memory of 2688 3056 cmd.exe 33 PID 3056 wrote to memory of 2688 3056 cmd.exe 33 PID 1916 wrote to memory of 2644 1916 yourmom.exe 34 PID 1916 wrote to memory of 2644 1916 yourmom.exe 34 PID 1916 wrote to memory of 2644 1916 yourmom.exe 34 PID 1916 wrote to memory of 2644 1916 yourmom.exe 34 PID 1916 wrote to memory of 1032 1916 yourmom.exe 35 PID 1916 wrote to memory of 1032 1916 yourmom.exe 35 PID 1916 wrote to memory of 1032 1916 yourmom.exe 35 PID 1916 wrote to memory of 1032 1916 yourmom.exe 35 PID 1916 wrote to memory of 1748 1916 yourmom.exe 36 PID 1916 wrote to memory of 1748 1916 yourmom.exe 36 PID 1916 wrote to memory of 1748 1916 yourmom.exe 36 PID 1916 wrote to memory of 1748 1916 yourmom.exe 36 PID 1916 wrote to memory of 1672 1916 yourmom.exe 38 PID 1916 wrote to memory of 1672 1916 yourmom.exe 38 PID 1916 wrote to memory of 1672 1916 yourmom.exe 38 PID 1916 wrote to memory of 1672 1916 yourmom.exe 38 PID 1916 wrote to memory of 1688 1916 yourmom.exe 39 PID 1916 wrote to memory of 1688 1916 yourmom.exe 39 PID 1916 wrote to memory of 1688 1916 yourmom.exe 39 PID 1916 wrote to memory of 1688 1916 yourmom.exe 39 PID 1916 wrote to memory of 2636 1916 yourmom.exe 45 PID 1916 wrote to memory of 2636 1916 yourmom.exe 45 PID 1916 wrote to memory of 2636 1916 yourmom.exe 45 PID 1916 wrote to memory of 2636 1916 yourmom.exe 45 PID 1916 wrote to memory of 1572 1916 yourmom.exe 46 PID 1916 wrote to memory of 1572 1916 yourmom.exe 46 PID 1916 wrote to memory of 1572 1916 yourmom.exe 46 PID 1916 wrote to memory of 1572 1916 yourmom.exe 46 PID 1572 wrote to memory of 2624 1572 cmd.exe 48 PID 1572 wrote to memory of 2624 1572 cmd.exe 48 PID 1572 wrote to memory of 2624 1572 cmd.exe 48 PID 1572 wrote to memory of 2624 1572 cmd.exe 48 PID 1916 wrote to memory of 2800 1916 yourmom.exe 49 PID 1916 wrote to memory of 2800 1916 yourmom.exe 49 PID 1916 wrote to memory of 2800 1916 yourmom.exe 49 PID 1916 wrote to memory of 2800 1916 yourmom.exe 49 PID 2624 wrote to memory of 2356 2624 !WannaDecryptor!.exe 50 PID 2624 wrote to memory of 2356 2624 !WannaDecryptor!.exe 50 PID 2624 wrote to memory of 2356 2624 !WannaDecryptor!.exe 50 PID 2624 wrote to memory of 2356 2624 !WannaDecryptor!.exe 50 PID 2356 wrote to memory of 2668 2356 cmd.exe 52 PID 2356 wrote to memory of 2668 2356 cmd.exe 52 PID 2356 wrote to memory of 2668 2356 cmd.exe 52 PID 2356 wrote to memory of 2668 2356 cmd.exe 52 PID 2356 wrote to memory of 2808 2356 cmd.exe 54 PID 2356 wrote to memory of 2808 2356 cmd.exe 54 PID 2356 wrote to memory of 2808 2356 cmd.exe 54 PID 2356 wrote to memory of 2808 2356 cmd.exe 54 -
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\yourmom.exe"C:\Users\Admin\AppData\Local\Temp\yourmom.exe"1⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1916 -
C:\Windows\SysWOW64\cmd.execmd /c 43111725935065.bat2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3056 -
C:\Windows\SysWOW64\cscript.execscript //nologo c.vbs3⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:2688
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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:2644
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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:1032
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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:1748
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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:1672
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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:1688
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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:2636
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C:\Windows\SysWOW64\cmd.execmd.exe /c start /b !WannaDecryptor!.exe v2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1572 -
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:2624 -
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:2356 -
C:\Windows\SysWOW64\vssadmin.exevssadmin delete shadows /all /quiet5⤵
- System Location Discovery: System Language Discovery
- Interacts with shadow copies
PID:2668
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic shadowcopy delete5⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2808
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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 FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:2800
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2748
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\TestBlock.pptm.WCRY1⤵
- Modifies registry class
PID:2940
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\CopyGrant.hta"1⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
PID:1868
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
3Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
236KB
MD5cf1416074cd7791ab80a18f9e7e219d9
SHA1276d2ec82c518d887a8a3608e51c56fa28716ded
SHA25678e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
SHA5120bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5
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Filesize
921B
MD5375ff12aaeb03bf3fde44f7db2755ac9
SHA187e84bb770c94c44c1e986c9dad9ef0fac5a87bc
SHA2565bdff214819521933ed243fe3abca8a1accdc9ecafc10a62ca7c0b78d9e494cc
SHA512cabbe2a9bcf9c01f422e42a7d0a688b2ff9c094cddb52302ac9a12907281627b005075003fe9067f6b0a4e574427f44435dd6b7850850ea140bc5231ae8ab52a
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Filesize
136B
MD5b0ca38cc233d9f2713c51ff7e195050e
SHA18334597be57e87caeda23d2a3574fe4230fe666b
SHA256920848b2be35477c0629516541cc2ce8dcf210bd41950356b63eaa3fd45ce9a7
SHA512c8d26f3f1b18d5b580497a3c9ba20ffe904eb68efbaa0a3b8da6f639c9577032afeb63fb6bb06a81e357e8a8c8da41d8dd52af77ee602020da94d7464e69288e
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Filesize
136B
MD57ebc0820320d4eac6b804c8c672afcfd
SHA11b16f910385783f7b166134c7fdb4309046a2358
SHA256cbc7ba5c17690039debc3edacfca464d7b30f273be7a310c0c42348f3928e078
SHA512190987936198c79dd37c4a8800a7d4dbd721975af4c9f53e24d58098e7bc2ef00b81654af3b844b6af70d970c4759509ee260f40bb6bf34c4e57cfe1ddc30e11
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Filesize
136B
MD5a1fbb86bd33af09a3fa6a1e6e3741e4d
SHA183132953364fcbdf49d4c5f584bb4971a15bb955
SHA256588aae825408b17625a48db8acd0979c5184bb5d4af5fe62f075e0d312a407fd
SHA51228ecee551ecdae30d865f55faa9c418953c5089eb305bd1ab99fca31f76c132ef85d7e2af1fdf0c0ceef630826753fed47c0a80d3a9d4b7207e8656d221a7b12
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Filesize
136B
MD5a6ee21d9418df3f808c36cf286722ff4
SHA1d957b05eac4e7009b69c9ddde55d231e2363449e
SHA256fb114b0f4778ebcf06e8d15c877cb9dec33155450b6f54e9e7045cbb55deb970
SHA512d4438921cefb6bbc791be77e4a25c4678e8ab5979a0fadaa78cd33c4efa02e01c67ef40cb256154d1fa51c2179e641f2456411aadc7bc68d086c441f1c38e84f
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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
MD5156978e12405b5cfbdc3c9ba4584afd6
SHA1267a5e38c787c92e8184712cfe05f65ae8244948
SHA2565b7fc69403eaeaed43fdef5eb82b501a485c68d22fbf6882c954c76c61b11aa0
SHA512bdb6ad40772be573f9055b913cd4e60f915551421cefcd939a922548db67b0d775ca6833a53921f13e998262ba66698b611c39db16a36bc2e8f982d78bbb5d4f
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Filesize
42KB
MD5980b08bac152aff3f9b0136b616affa5
SHA12a9c9601ea038f790cc29379c79407356a3d25a3
SHA256402046ada270528c9ac38bbfa0152836fe30fb8e12192354e53b8397421430d9
SHA512100cda1f795781042b012498afd783fd6ff03b0068dbd07b2c2e163cd95e6c6e00755ce16b02b017693c9febc149ed02df9df9b607e2b9cca4b07e5bd420f496
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Filesize
797B
MD5afa18cf4aa2660392111763fb93a8c3d
SHA1c219a3654a5f41ce535a09f2a188a464c3f5baf5
SHA256227082c719fd4394c1f2311a0877d8a302c5b092bcc49f853a5cf3d2945f42b0
SHA5124161f250d59b7d4d4a6c4f16639d66d21b2a9606de956d22ec00bedb006643fedbbb8e4cde9f6c0c977285918648314883ca91f3442d1125593bf2605f2d5c6b