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
150s -
max time network
127s -
platform
windows7_x64 -
resource
win7-20240705-en -
resource tags
arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system -
submitted
02-09-2024 01:55
Static task
static1
Behavioral task
behavioral1
Sample
yourmom.exe
Resource
win7-20240705-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 1 IoCs
description ioc Process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SDEF65.tmp yourmom.exe -
Executes dropped EXE 4 IoCs
pid Process 1624 !WannaDecryptor!.exe 2868 !WannaDecryptor!.exe 1764 !WannaDecryptor!.exe 3044 !WannaDecryptor!.exe -
Loads dropped DLL 9 IoCs
pid Process 2632 cscript.exe 2072 yourmom.exe 2072 yourmom.exe 2072 yourmom.exe 2072 yourmom.exe 1536 cmd.exe 1536 cmd.exe 2072 yourmom.exe 2072 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-1-5-21-3502430532-24693940-2469786940-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\!WannaCryptor!.bmp" !WannaDecryptor!.exe Set value (str) \REGISTRY\USER\S-1-5-21-3502430532-24693940-2469786940-1000\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 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 cscript.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 !WannaDecryptor!.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 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 -
Interacts with shadow copies 3 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2260 vssadmin.exe -
Kills process with taskkill 4 IoCs
pid Process 1576 taskkill.exe 2792 taskkill.exe 2024 taskkill.exe 1368 taskkill.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3044 !WannaDecryptor!.exe -
Suspicious use of AdjustPrivilegeToken 47 IoCs
description pid Process Token: SeDebugPrivilege 2024 taskkill.exe Token: SeDebugPrivilege 1368 taskkill.exe Token: SeDebugPrivilege 1576 taskkill.exe Token: SeDebugPrivilege 2792 taskkill.exe Token: SeBackupPrivilege 2196 vssvc.exe Token: SeRestorePrivilege 2196 vssvc.exe Token: SeAuditPrivilege 2196 vssvc.exe Token: SeIncreaseQuotaPrivilege 1980 WMIC.exe Token: SeSecurityPrivilege 1980 WMIC.exe Token: SeTakeOwnershipPrivilege 1980 WMIC.exe Token: SeLoadDriverPrivilege 1980 WMIC.exe Token: SeSystemProfilePrivilege 1980 WMIC.exe Token: SeSystemtimePrivilege 1980 WMIC.exe Token: SeProfSingleProcessPrivilege 1980 WMIC.exe Token: SeIncBasePriorityPrivilege 1980 WMIC.exe Token: SeCreatePagefilePrivilege 1980 WMIC.exe Token: SeBackupPrivilege 1980 WMIC.exe Token: SeRestorePrivilege 1980 WMIC.exe Token: SeShutdownPrivilege 1980 WMIC.exe Token: SeDebugPrivilege 1980 WMIC.exe Token: SeSystemEnvironmentPrivilege 1980 WMIC.exe Token: SeRemoteShutdownPrivilege 1980 WMIC.exe Token: SeUndockPrivilege 1980 WMIC.exe Token: SeManageVolumePrivilege 1980 WMIC.exe Token: 33 1980 WMIC.exe Token: 34 1980 WMIC.exe Token: 35 1980 WMIC.exe Token: SeIncreaseQuotaPrivilege 1980 WMIC.exe Token: SeSecurityPrivilege 1980 WMIC.exe Token: SeTakeOwnershipPrivilege 1980 WMIC.exe Token: SeLoadDriverPrivilege 1980 WMIC.exe Token: SeSystemProfilePrivilege 1980 WMIC.exe Token: SeSystemtimePrivilege 1980 WMIC.exe Token: SeProfSingleProcessPrivilege 1980 WMIC.exe Token: SeIncBasePriorityPrivilege 1980 WMIC.exe Token: SeCreatePagefilePrivilege 1980 WMIC.exe Token: SeBackupPrivilege 1980 WMIC.exe Token: SeRestorePrivilege 1980 WMIC.exe Token: SeShutdownPrivilege 1980 WMIC.exe Token: SeDebugPrivilege 1980 WMIC.exe Token: SeSystemEnvironmentPrivilege 1980 WMIC.exe Token: SeRemoteShutdownPrivilege 1980 WMIC.exe Token: SeUndockPrivilege 1980 WMIC.exe Token: SeManageVolumePrivilege 1980 WMIC.exe Token: 33 1980 WMIC.exe Token: 34 1980 WMIC.exe Token: 35 1980 WMIC.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3044 !WannaDecryptor!.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 1624 !WannaDecryptor!.exe 1624 !WannaDecryptor!.exe 2868 !WannaDecryptor!.exe 2868 !WannaDecryptor!.exe 1764 !WannaDecryptor!.exe 1764 !WannaDecryptor!.exe 3044 !WannaDecryptor!.exe 3044 !WannaDecryptor!.exe -
Suspicious use of WriteProcessMemory 56 IoCs
description pid Process procid_target PID 2072 wrote to memory of 2820 2072 yourmom.exe 30 PID 2072 wrote to memory of 2820 2072 yourmom.exe 30 PID 2072 wrote to memory of 2820 2072 yourmom.exe 30 PID 2072 wrote to memory of 2820 2072 yourmom.exe 30 PID 2820 wrote to memory of 2632 2820 cmd.exe 32 PID 2820 wrote to memory of 2632 2820 cmd.exe 32 PID 2820 wrote to memory of 2632 2820 cmd.exe 32 PID 2820 wrote to memory of 2632 2820 cmd.exe 32 PID 2072 wrote to memory of 1624 2072 yourmom.exe 33 PID 2072 wrote to memory of 1624 2072 yourmom.exe 33 PID 2072 wrote to memory of 1624 2072 yourmom.exe 33 PID 2072 wrote to memory of 1624 2072 yourmom.exe 33 PID 2072 wrote to memory of 1576 2072 yourmom.exe 34 PID 2072 wrote to memory of 1576 2072 yourmom.exe 34 PID 2072 wrote to memory of 1576 2072 yourmom.exe 34 PID 2072 wrote to memory of 1576 2072 yourmom.exe 34 PID 2072 wrote to memory of 2792 2072 yourmom.exe 35 PID 2072 wrote to memory of 2792 2072 yourmom.exe 35 PID 2072 wrote to memory of 2792 2072 yourmom.exe 35 PID 2072 wrote to memory of 2792 2072 yourmom.exe 35 PID 2072 wrote to memory of 2024 2072 yourmom.exe 37 PID 2072 wrote to memory of 2024 2072 yourmom.exe 37 PID 2072 wrote to memory of 2024 2072 yourmom.exe 37 PID 2072 wrote to memory of 2024 2072 yourmom.exe 37 PID 2072 wrote to memory of 1368 2072 yourmom.exe 39 PID 2072 wrote to memory of 1368 2072 yourmom.exe 39 PID 2072 wrote to memory of 1368 2072 yourmom.exe 39 PID 2072 wrote to memory of 1368 2072 yourmom.exe 39 PID 2072 wrote to memory of 2868 2072 yourmom.exe 44 PID 2072 wrote to memory of 2868 2072 yourmom.exe 44 PID 2072 wrote to memory of 2868 2072 yourmom.exe 44 PID 2072 wrote to memory of 2868 2072 yourmom.exe 44 PID 2072 wrote to memory of 1536 2072 yourmom.exe 45 PID 2072 wrote to memory of 1536 2072 yourmom.exe 45 PID 2072 wrote to memory of 1536 2072 yourmom.exe 45 PID 2072 wrote to memory of 1536 2072 yourmom.exe 45 PID 1536 wrote to memory of 1764 1536 cmd.exe 47 PID 1536 wrote to memory of 1764 1536 cmd.exe 47 PID 1536 wrote to memory of 1764 1536 cmd.exe 47 PID 1536 wrote to memory of 1764 1536 cmd.exe 47 PID 2072 wrote to memory of 3044 2072 yourmom.exe 48 PID 2072 wrote to memory of 3044 2072 yourmom.exe 48 PID 2072 wrote to memory of 3044 2072 yourmom.exe 48 PID 2072 wrote to memory of 3044 2072 yourmom.exe 48 PID 1764 wrote to memory of 1604 1764 !WannaDecryptor!.exe 49 PID 1764 wrote to memory of 1604 1764 !WannaDecryptor!.exe 49 PID 1764 wrote to memory of 1604 1764 !WannaDecryptor!.exe 49 PID 1764 wrote to memory of 1604 1764 !WannaDecryptor!.exe 49 PID 1604 wrote to memory of 2260 1604 cmd.exe 51 PID 1604 wrote to memory of 2260 1604 cmd.exe 51 PID 1604 wrote to memory of 2260 1604 cmd.exe 51 PID 1604 wrote to memory of 2260 1604 cmd.exe 51 PID 1604 wrote to memory of 1980 1604 cmd.exe 53 PID 1604 wrote to memory of 1980 1604 cmd.exe 53 PID 1604 wrote to memory of 1980 1604 cmd.exe 53 PID 1604 wrote to memory of 1980 1604 cmd.exe 53 -
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:2072 -
C:\Windows\SysWOW64\cmd.execmd /c 61431725242133.bat2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2820 -
C:\Windows\SysWOW64\cscript.execscript //nologo c.vbs3⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:2632
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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:1624
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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:1576
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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:2792
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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:2024
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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:1368
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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:2868
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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:1536 -
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:1764 -
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:1604 -
C:\Windows\SysWOW64\vssadmin.exevssadmin delete shadows /all /quiet5⤵
- System Location Discovery: System Language Discovery
- Interacts with shadow copies
PID:2260
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic shadowcopy delete5⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1980
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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 behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:3044
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2196
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
921B
MD554998a203d64e9efede73bba4b401966
SHA14468a2c7d5c1725771cde68363523914e2b87a34
SHA2563d0dc7940ec3ce5e14f8c582fc0c4312719ca28e41415b97d379e0f5267bdf04
SHA5123a016a9e0c571f717dd14cb9dbb9a1a00bebfe438ddc13757b1713656e744a83ea311aae380346c0898ba5f401bc41cc10f7d9f3b9dd3e6e7a99114a2269e5a0
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Filesize
136B
MD5d9c3fb184612027429131edb3c77da65
SHA186e29ca88372596c5e9c57440c0e3dcdd5af2297
SHA256624b8558e5816a85c62385a9debf9d042c8ccc38e9279dffffddfb8fe6714830
SHA512a2b15af6a23d6f6697b5ccf422f0325e9febad29aa29883f15ed35aec3f81de4f4229824a59a32a991d543cd8c923208b45784f6361152f22c61b80ff6a92744
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Filesize
136B
MD5f16611715dcb60604119f38468182d9e
SHA1f8e72ec61eaee83399516915fe94ba84f639f47f
SHA25678f7b38482241b74d098078704dc2b36cf5604cdf1e8ecc23409c8f3ae109bf3
SHA512fcf121f12a7603287616e31d4b775b69ac1e93466423a117431f6bb252fa5377d65c743d87062175d51fdceeb02afc191011be2324050caab9315404c43d7f1f
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Filesize
136B
MD51f9cc464c3f8c3e19162b4091fe0fe1c
SHA10224ca379b84000bdb22e8f1527de01fd3b56dc7
SHA256b2ca35318cae108bfdf76c6da7727847f099b2377bf07addb4ed98c2c176acc5
SHA51250fae79675f5efd502c3b441cf1ebd8c8a3aa93ce4574e938242799b5de214424eedaa14ed986b1b54cf16547bcefc0e620d59d70c35df4d0a3354f38499f7af
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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
MD5ceed825b3104844a427b425a6a7dd6ab
SHA13d0253100887059a6b50f9746bede5fcc1afca06
SHA25621d9f6134af4dab616191d1afce86d0a89a120611f5ccfc2f353c809a544c48a
SHA512dce2231d62e08fc555d88d4b6468eddd1e81d2ffd611b1f967ea80caded61345279617ec3b42d92827934ea92b1724878dbfe019c5462b479cb82a142ce3aaf6
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Filesize
42KB
MD5980b08bac152aff3f9b0136b616affa5
SHA12a9c9601ea038f790cc29379c79407356a3d25a3
SHA256402046ada270528c9ac38bbfa0152836fe30fb8e12192354e53b8397421430d9
SHA512100cda1f795781042b012498afd783fd6ff03b0068dbd07b2c2e163cd95e6c6e00755ce16b02b017693c9febc149ed02df9df9b607e2b9cca4b07e5bd420f496
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Filesize
797B
MD5afa18cf4aa2660392111763fb93a8c3d
SHA1c219a3654a5f41ce535a09f2a188a464c3f5baf5
SHA256227082c719fd4394c1f2311a0877d8a302c5b092bcc49f853a5cf3d2945f42b0
SHA5124161f250d59b7d4d4a6c4f16639d66d21b2a9606de956d22ec00bedb006643fedbbb8e4cde9f6c0c977285918648314883ca91f3442d1125593bf2605f2d5c6b