Resubmissions
02-09-2024 01:55
240902-cb6e8azaqf 1002-09-2024 01:49
240902-b8vjjsybjl 1002-09-2024 00:25
240902-aqws8awcrr 10Analysis
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max time kernel
55s -
max time network
16s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
02-09-2024 00:25
Static task
static1
Behavioral task
behavioral1
Sample
yourmom.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
yourmom.exe
Resource
win10v2004-20240802-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\~SDF062.tmp yourmom.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SDF075.tmp yourmom.exe -
Executes dropped EXE 4 IoCs
pid Process 2224 !WannaDecryptor!.exe 1524 !WannaDecryptor!.exe 2696 !WannaDecryptor!.exe 2580 !WannaDecryptor!.exe -
Loads dropped DLL 9 IoCs
pid Process 2744 cscript.exe 2808 yourmom.exe 2808 yourmom.exe 2808 yourmom.exe 2808 yourmom.exe 2796 cmd.exe 2796 cmd.exe 2808 yourmom.exe 2808 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-1-5-21-2958949473-3205530200-1453100116-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Pictures\\My Wallpaper.jpg" !WannaDecryptor!.exe Set value (str) \REGISTRY\USER\S-1-5-21-2958949473-3205530200-1453100116-1000\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 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 taskkill.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 !WannaDecryptor!.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 cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.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 !WannaDecryptor!.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language yourmom.exe -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2556 vssadmin.exe -
Kills process with taskkill 4 IoCs
pid Process 1864 taskkill.exe 340 taskkill.exe 900 taskkill.exe 836 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 47 IoCs
description pid Process Token: SeDebugPrivilege 340 taskkill.exe Token: SeDebugPrivilege 836 taskkill.exe Token: SeDebugPrivilege 900 taskkill.exe Token: SeDebugPrivilege 1864 taskkill.exe Token: SeBackupPrivilege 2664 vssvc.exe Token: SeRestorePrivilege 2664 vssvc.exe Token: SeAuditPrivilege 2664 vssvc.exe Token: SeIncreaseQuotaPrivilege 2280 WMIC.exe Token: SeSecurityPrivilege 2280 WMIC.exe Token: SeTakeOwnershipPrivilege 2280 WMIC.exe Token: SeLoadDriverPrivilege 2280 WMIC.exe Token: SeSystemProfilePrivilege 2280 WMIC.exe Token: SeSystemtimePrivilege 2280 WMIC.exe Token: SeProfSingleProcessPrivilege 2280 WMIC.exe Token: SeIncBasePriorityPrivilege 2280 WMIC.exe Token: SeCreatePagefilePrivilege 2280 WMIC.exe Token: SeBackupPrivilege 2280 WMIC.exe Token: SeRestorePrivilege 2280 WMIC.exe Token: SeShutdownPrivilege 2280 WMIC.exe Token: SeDebugPrivilege 2280 WMIC.exe Token: SeSystemEnvironmentPrivilege 2280 WMIC.exe Token: SeRemoteShutdownPrivilege 2280 WMIC.exe Token: SeUndockPrivilege 2280 WMIC.exe Token: SeManageVolumePrivilege 2280 WMIC.exe Token: 33 2280 WMIC.exe Token: 34 2280 WMIC.exe Token: 35 2280 WMIC.exe Token: SeIncreaseQuotaPrivilege 2280 WMIC.exe Token: SeSecurityPrivilege 2280 WMIC.exe Token: SeTakeOwnershipPrivilege 2280 WMIC.exe Token: SeLoadDriverPrivilege 2280 WMIC.exe Token: SeSystemProfilePrivilege 2280 WMIC.exe Token: SeSystemtimePrivilege 2280 WMIC.exe Token: SeProfSingleProcessPrivilege 2280 WMIC.exe Token: SeIncBasePriorityPrivilege 2280 WMIC.exe Token: SeCreatePagefilePrivilege 2280 WMIC.exe Token: SeBackupPrivilege 2280 WMIC.exe Token: SeRestorePrivilege 2280 WMIC.exe Token: SeShutdownPrivilege 2280 WMIC.exe Token: SeDebugPrivilege 2280 WMIC.exe Token: SeSystemEnvironmentPrivilege 2280 WMIC.exe Token: SeRemoteShutdownPrivilege 2280 WMIC.exe Token: SeUndockPrivilege 2280 WMIC.exe Token: SeManageVolumePrivilege 2280 WMIC.exe Token: 33 2280 WMIC.exe Token: 34 2280 WMIC.exe Token: 35 2280 WMIC.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 2224 !WannaDecryptor!.exe 2224 !WannaDecryptor!.exe 1524 !WannaDecryptor!.exe 1524 !WannaDecryptor!.exe 2696 !WannaDecryptor!.exe 2696 !WannaDecryptor!.exe 2580 !WannaDecryptor!.exe 2580 !WannaDecryptor!.exe -
Suspicious use of WriteProcessMemory 56 IoCs
description pid Process procid_target PID 2808 wrote to memory of 2120 2808 yourmom.exe 31 PID 2808 wrote to memory of 2120 2808 yourmom.exe 31 PID 2808 wrote to memory of 2120 2808 yourmom.exe 31 PID 2808 wrote to memory of 2120 2808 yourmom.exe 31 PID 2120 wrote to memory of 2744 2120 cmd.exe 33 PID 2120 wrote to memory of 2744 2120 cmd.exe 33 PID 2120 wrote to memory of 2744 2120 cmd.exe 33 PID 2120 wrote to memory of 2744 2120 cmd.exe 33 PID 2808 wrote to memory of 2224 2808 yourmom.exe 34 PID 2808 wrote to memory of 2224 2808 yourmom.exe 34 PID 2808 wrote to memory of 2224 2808 yourmom.exe 34 PID 2808 wrote to memory of 2224 2808 yourmom.exe 34 PID 2808 wrote to memory of 1864 2808 yourmom.exe 35 PID 2808 wrote to memory of 1864 2808 yourmom.exe 35 PID 2808 wrote to memory of 1864 2808 yourmom.exe 35 PID 2808 wrote to memory of 1864 2808 yourmom.exe 35 PID 2808 wrote to memory of 340 2808 yourmom.exe 36 PID 2808 wrote to memory of 340 2808 yourmom.exe 36 PID 2808 wrote to memory of 340 2808 yourmom.exe 36 PID 2808 wrote to memory of 340 2808 yourmom.exe 36 PID 2808 wrote to memory of 900 2808 yourmom.exe 38 PID 2808 wrote to memory of 900 2808 yourmom.exe 38 PID 2808 wrote to memory of 900 2808 yourmom.exe 38 PID 2808 wrote to memory of 900 2808 yourmom.exe 38 PID 2808 wrote to memory of 836 2808 yourmom.exe 39 PID 2808 wrote to memory of 836 2808 yourmom.exe 39 PID 2808 wrote to memory of 836 2808 yourmom.exe 39 PID 2808 wrote to memory of 836 2808 yourmom.exe 39 PID 2808 wrote to memory of 1524 2808 yourmom.exe 45 PID 2808 wrote to memory of 1524 2808 yourmom.exe 45 PID 2808 wrote to memory of 1524 2808 yourmom.exe 45 PID 2808 wrote to memory of 1524 2808 yourmom.exe 45 PID 2808 wrote to memory of 2796 2808 yourmom.exe 46 PID 2808 wrote to memory of 2796 2808 yourmom.exe 46 PID 2808 wrote to memory of 2796 2808 yourmom.exe 46 PID 2808 wrote to memory of 2796 2808 yourmom.exe 46 PID 2796 wrote to memory of 2696 2796 cmd.exe 48 PID 2796 wrote to memory of 2696 2796 cmd.exe 48 PID 2796 wrote to memory of 2696 2796 cmd.exe 48 PID 2796 wrote to memory of 2696 2796 cmd.exe 48 PID 2808 wrote to memory of 2580 2808 yourmom.exe 49 PID 2808 wrote to memory of 2580 2808 yourmom.exe 49 PID 2808 wrote to memory of 2580 2808 yourmom.exe 49 PID 2808 wrote to memory of 2580 2808 yourmom.exe 49 PID 2696 wrote to memory of 2656 2696 !WannaDecryptor!.exe 50 PID 2696 wrote to memory of 2656 2696 !WannaDecryptor!.exe 50 PID 2696 wrote to memory of 2656 2696 !WannaDecryptor!.exe 50 PID 2696 wrote to memory of 2656 2696 !WannaDecryptor!.exe 50 PID 2656 wrote to memory of 2556 2656 cmd.exe 52 PID 2656 wrote to memory of 2556 2656 cmd.exe 52 PID 2656 wrote to memory of 2556 2656 cmd.exe 52 PID 2656 wrote to memory of 2556 2656 cmd.exe 52 PID 2656 wrote to memory of 2280 2656 cmd.exe 54 PID 2656 wrote to memory of 2280 2656 cmd.exe 54 PID 2656 wrote to memory of 2280 2656 cmd.exe 54 PID 2656 wrote to memory of 2280 2656 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:2808 -
C:\Windows\SysWOW64\cmd.execmd /c 67041725236744.bat2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2120 -
C:\Windows\SysWOW64\cscript.execscript //nologo c.vbs3⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:2744
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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:2224
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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:1864
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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:340
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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:900
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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:836
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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:1524
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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:2796 -
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:2696 -
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:2656 -
C:\Windows\SysWOW64\vssadmin.exevssadmin delete shadows /all /quiet5⤵
- System Location Discovery: System Language Discovery
- Interacts with shadow copies
PID:2556
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic shadowcopy delete5⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2280
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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:2580
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2664
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
236KB
MD5cf1416074cd7791ab80a18f9e7e219d9
SHA1276d2ec82c518d887a8a3608e51c56fa28716ded
SHA25678e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
SHA5120bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5
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Filesize
925B
MD51b69767ab2ce4eabe1c54542e9197a6e
SHA19635f86e42f1d88164352f8e5d5ba8c5b899ddfc
SHA256d99e2de829ba592ea98c679882b85336c1a197b832e509a09a9c982b44e87e72
SHA51270ea57317ae7b1fcb329c96608bdf32dfd5ec67b69da8aee2fb844774d5aaec6d13df931f431069c59e5c8f14ba635296f5c9e0b473c6e6b8a9badecf0e97425
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Filesize
136B
MD566a1e9b82454bbff2360de9e9f11bb73
SHA13432845da729c83c0e532e4b0c93aa7e379631c9
SHA25675893d25964f40da9cb2f4695f9fc6949e96ae7af95f1c095f5bfdbc51e2a518
SHA512a58adc9b0cb2644554faa1f12d3fdcf2b4b69258a2c095eccd12cfe3e0cc7ecc17545c99288ef2623c49bdf92a07d0ec6adfd19ed1ed4e5fe5ab788fd2d44601
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Filesize
136B
MD5e5131d8191ac7c93f8cc44ac8bb72a92
SHA1d8d4be085cbf23c1bdc7d6a98ec9276533f5ff7c
SHA256a09f71e8a321e4568fd2f46df030d5fedafb16464364e6e5438dd1e12e8bc3c4
SHA512c52d110cb9a98eba608c7acc4d5afc1031d71be5b6804487c1d062a4afe8f0f404f9448866c7dc065ff005175dca9791a79da23f5ba0007c20dabf049232ea02
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Filesize
136B
MD582f8a7b2222a97dde5a03ad2988af721
SHA170c367e5d9de21dba0fd6521bfbc8c9d08d82528
SHA256f7b0a312f90adeeafe260a1ea64a99fa163f220b7036127c2648001e61966780
SHA512780b61acdb87ec58db8484a33dc7676fa26b8bee93175c82a6b46d416449b691f1f4763d3cbe6d94af77151fe013c8744fac11f58d7f7834e70322b7bb63d1fe
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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
MD5453a49a2c0e4b0107ec64da8270e0cd2
SHA1827496cce7b54998914d6e80afffd362fd86555c
SHA25617c101d9a5356ed6db699864e02edbe822a55418b72def66f682d907db8f7fcd
SHA512a10e6bb3c5f3b91dccdc0444f909f831d99b1d9f4cde8503d81d040d3d4d7d16de903eebff13d43d4201464dd7f093452e75d2cb0c760d3c5d4edf016d0cf5a4
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Filesize
42KB
MD5980b08bac152aff3f9b0136b616affa5
SHA12a9c9601ea038f790cc29379c79407356a3d25a3
SHA256402046ada270528c9ac38bbfa0152836fe30fb8e12192354e53b8397421430d9
SHA512100cda1f795781042b012498afd783fd6ff03b0068dbd07b2c2e163cd95e6c6e00755ce16b02b017693c9febc149ed02df9df9b607e2b9cca4b07e5bd420f496
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Filesize
797B
MD5afa18cf4aa2660392111763fb93a8c3d
SHA1c219a3654a5f41ce535a09f2a188a464c3f5baf5
SHA256227082c719fd4394c1f2311a0877d8a302c5b092bcc49f853a5cf3d2945f42b0
SHA5124161f250d59b7d4d4a6c4f16639d66d21b2a9606de956d22ec00bedb006643fedbbb8e4cde9f6c0c977285918648314883ca91f3442d1125593bf2605f2d5c6b