Analysis
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max time kernel
149s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
03-06-2024 05:39
Static task
static1
Behavioral task
behavioral1
Sample
Surprise.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
Surprise.exe
Resource
win10v2004-20240426-en
General
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Target
Surprise.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
Processes:
Surprise.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SD342B.tmp Surprise.exe -
Executes dropped EXE 4 IoCs
Processes:
!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exepid process 2444 !WannaDecryptor!.exe 1668 !WannaDecryptor!.exe 1388 !WannaDecryptor!.exe 2272 !WannaDecryptor!.exe -
Loads dropped DLL 9 IoCs
Processes:
cscript.exeSurprise.execmd.exepid process 2564 cscript.exe 1800 Surprise.exe 1800 Surprise.exe 1800 Surprise.exe 1800 Surprise.exe 912 cmd.exe 912 cmd.exe 1800 Surprise.exe 1800 Surprise.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
Processes:
Surprise.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft Update Task Scheduler = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Surprise.exe\" /r" Surprise.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
Processes:
!WannaDecryptor!.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\!WannaCryptor!.bmp" !WannaDecryptor!.exe Set value (str) \REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\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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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exepid process 2400 vssadmin.exe -
Kills process with taskkill 4 IoCs
Processes:
taskkill.exetaskkill.exetaskkill.exetaskkill.exepid process 308 taskkill.exe 856 taskkill.exe 2916 taskkill.exe 2924 taskkill.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
!WannaDecryptor!.exepid process 2272 !WannaDecryptor!.exe -
Suspicious use of AdjustPrivilegeToken 47 IoCs
Processes:
taskkill.exetaskkill.exetaskkill.exetaskkill.exevssvc.exeWMIC.exedescription pid process Token: SeDebugPrivilege 308 taskkill.exe Token: SeDebugPrivilege 2924 taskkill.exe Token: SeDebugPrivilege 856 taskkill.exe Token: SeDebugPrivilege 2916 taskkill.exe Token: SeBackupPrivilege 2044 vssvc.exe Token: SeRestorePrivilege 2044 vssvc.exe Token: SeAuditPrivilege 2044 vssvc.exe Token: SeIncreaseQuotaPrivilege 2456 WMIC.exe Token: SeSecurityPrivilege 2456 WMIC.exe Token: SeTakeOwnershipPrivilege 2456 WMIC.exe Token: SeLoadDriverPrivilege 2456 WMIC.exe Token: SeSystemProfilePrivilege 2456 WMIC.exe Token: SeSystemtimePrivilege 2456 WMIC.exe Token: SeProfSingleProcessPrivilege 2456 WMIC.exe Token: SeIncBasePriorityPrivilege 2456 WMIC.exe Token: SeCreatePagefilePrivilege 2456 WMIC.exe Token: SeBackupPrivilege 2456 WMIC.exe Token: SeRestorePrivilege 2456 WMIC.exe Token: SeShutdownPrivilege 2456 WMIC.exe Token: SeDebugPrivilege 2456 WMIC.exe Token: SeSystemEnvironmentPrivilege 2456 WMIC.exe Token: SeRemoteShutdownPrivilege 2456 WMIC.exe Token: SeUndockPrivilege 2456 WMIC.exe Token: SeManageVolumePrivilege 2456 WMIC.exe Token: 33 2456 WMIC.exe Token: 34 2456 WMIC.exe Token: 35 2456 WMIC.exe Token: SeIncreaseQuotaPrivilege 2456 WMIC.exe Token: SeSecurityPrivilege 2456 WMIC.exe Token: SeTakeOwnershipPrivilege 2456 WMIC.exe Token: SeLoadDriverPrivilege 2456 WMIC.exe Token: SeSystemProfilePrivilege 2456 WMIC.exe Token: SeSystemtimePrivilege 2456 WMIC.exe Token: SeProfSingleProcessPrivilege 2456 WMIC.exe Token: SeIncBasePriorityPrivilege 2456 WMIC.exe Token: SeCreatePagefilePrivilege 2456 WMIC.exe Token: SeBackupPrivilege 2456 WMIC.exe Token: SeRestorePrivilege 2456 WMIC.exe Token: SeShutdownPrivilege 2456 WMIC.exe Token: SeDebugPrivilege 2456 WMIC.exe Token: SeSystemEnvironmentPrivilege 2456 WMIC.exe Token: SeRemoteShutdownPrivilege 2456 WMIC.exe Token: SeUndockPrivilege 2456 WMIC.exe Token: SeManageVolumePrivilege 2456 WMIC.exe Token: 33 2456 WMIC.exe Token: 34 2456 WMIC.exe Token: 35 2456 WMIC.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
Processes:
!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exepid process 2444 !WannaDecryptor!.exe 2444 !WannaDecryptor!.exe 1668 !WannaDecryptor!.exe 1668 !WannaDecryptor!.exe 1388 !WannaDecryptor!.exe 1388 !WannaDecryptor!.exe 2272 !WannaDecryptor!.exe 2272 !WannaDecryptor!.exe -
Suspicious use of WriteProcessMemory 56 IoCs
Processes:
Surprise.execmd.execmd.exe!WannaDecryptor!.execmd.exedescription pid process target process PID 1800 wrote to memory of 2512 1800 Surprise.exe cmd.exe PID 1800 wrote to memory of 2512 1800 Surprise.exe cmd.exe PID 1800 wrote to memory of 2512 1800 Surprise.exe cmd.exe PID 1800 wrote to memory of 2512 1800 Surprise.exe cmd.exe PID 2512 wrote to memory of 2564 2512 cmd.exe cscript.exe PID 2512 wrote to memory of 2564 2512 cmd.exe cscript.exe PID 2512 wrote to memory of 2564 2512 cmd.exe cscript.exe PID 2512 wrote to memory of 2564 2512 cmd.exe cscript.exe PID 1800 wrote to memory of 2444 1800 Surprise.exe !WannaDecryptor!.exe PID 1800 wrote to memory of 2444 1800 Surprise.exe !WannaDecryptor!.exe PID 1800 wrote to memory of 2444 1800 Surprise.exe !WannaDecryptor!.exe PID 1800 wrote to memory of 2444 1800 Surprise.exe !WannaDecryptor!.exe PID 1800 wrote to memory of 2924 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 2924 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 2924 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 2924 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 2916 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 2916 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 2916 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 2916 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 856 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 856 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 856 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 856 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 308 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 308 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 308 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 308 1800 Surprise.exe taskkill.exe PID 1800 wrote to memory of 1668 1800 Surprise.exe !WannaDecryptor!.exe PID 1800 wrote to memory of 1668 1800 Surprise.exe !WannaDecryptor!.exe PID 1800 wrote to memory of 1668 1800 Surprise.exe !WannaDecryptor!.exe PID 1800 wrote to memory of 1668 1800 Surprise.exe !WannaDecryptor!.exe PID 1800 wrote to memory of 912 1800 Surprise.exe cmd.exe PID 1800 wrote to memory of 912 1800 Surprise.exe cmd.exe PID 1800 wrote to memory of 912 1800 Surprise.exe cmd.exe PID 1800 wrote to memory of 912 1800 Surprise.exe cmd.exe PID 912 wrote to memory of 1388 912 cmd.exe !WannaDecryptor!.exe PID 912 wrote to memory of 1388 912 cmd.exe !WannaDecryptor!.exe PID 912 wrote to memory of 1388 912 cmd.exe !WannaDecryptor!.exe PID 912 wrote to memory of 1388 912 cmd.exe !WannaDecryptor!.exe PID 1800 wrote to memory of 2272 1800 Surprise.exe !WannaDecryptor!.exe PID 1800 wrote to memory of 2272 1800 Surprise.exe !WannaDecryptor!.exe PID 1800 wrote to memory of 2272 1800 Surprise.exe !WannaDecryptor!.exe PID 1800 wrote to memory of 2272 1800 Surprise.exe !WannaDecryptor!.exe PID 1388 wrote to memory of 1848 1388 !WannaDecryptor!.exe cmd.exe PID 1388 wrote to memory of 1848 1388 !WannaDecryptor!.exe cmd.exe PID 1388 wrote to memory of 1848 1388 !WannaDecryptor!.exe cmd.exe PID 1388 wrote to memory of 1848 1388 !WannaDecryptor!.exe cmd.exe PID 1848 wrote to memory of 2400 1848 cmd.exe vssadmin.exe PID 1848 wrote to memory of 2400 1848 cmd.exe vssadmin.exe PID 1848 wrote to memory of 2400 1848 cmd.exe vssadmin.exe PID 1848 wrote to memory of 2400 1848 cmd.exe vssadmin.exe PID 1848 wrote to memory of 2456 1848 cmd.exe WMIC.exe PID 1848 wrote to memory of 2456 1848 cmd.exe WMIC.exe PID 1848 wrote to memory of 2456 1848 cmd.exe WMIC.exe PID 1848 wrote to memory of 2456 1848 cmd.exe WMIC.exe -
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\Surprise.exe"C:\Users\Admin\AppData\Local\Temp\Surprise.exe"1⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1800 -
C:\Windows\SysWOW64\cmd.execmd /c 124151717393163.bat2⤵
- Suspicious use of WriteProcessMemory
PID:2512 -
C:\Windows\SysWOW64\cscript.execscript //nologo c.vbs3⤵
- Loads dropped DLL
PID:2564 -
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe f2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:2444 -
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im MSExchange*2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2924 -
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im Microsoft.Exchange.*2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2916 -
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im sqlserver.exe2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:856 -
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im sqlwriter.exe2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:308 -
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe c2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1668 -
C:\Windows\SysWOW64\cmd.execmd.exe /c start /b !WannaDecryptor!.exe v2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:912 -
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe v3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1388 -
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⤵
- Suspicious use of WriteProcessMemory
PID:1848 -
C:\Windows\SysWOW64\vssadmin.exevssadmin delete shadows /all /quiet5⤵
- Interacts with shadow copies
PID:2400 -
C:\Windows\SysWOW64\Wbem\WMIC.exewmic shadowcopy delete5⤵
- Suspicious use of AdjustPrivilegeToken
PID:2456 -
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe2⤵
- Executes dropped EXE
- Sets desktop wallpaper using registry
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:2272
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2044
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exeFilesize
236KB
MD5cf1416074cd7791ab80a18f9e7e219d9
SHA1276d2ec82c518d887a8a3608e51c56fa28716ded
SHA25678e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
SHA5120bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5
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C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe.lnkFilesize
925B
MD5513c6fc75c447fa41605846cb3f82434
SHA1002e904e5e54dd33347db2490fd0541d873ce6f4
SHA256b41f6e4ce1fbc325da125c2b31e8ee4907f1660f2d503c201e8c0b3b6909de18
SHA512efe12283a2582ce174959dd24617eaa6eb51549a41124c3d44b1f7a72ccd08620640a21ccbe6f2ec5c423f4a6c43a878922791dc9d72289c7da607a2e23e0029
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C:\Users\Admin\AppData\Local\Temp\00000000.resFilesize
136B
MD53cb6c0f7bfa95fa33f64b06bff61e1c1
SHA106c36e2dea3010ad34f21aa1d558601a95dadbca
SHA25662835e7195823fe7785b528e9c9be7d1be7172e7ac1b9a3ded906176d69d6eb4
SHA5123f8692047f2ba6c91d400d788ff6967eaa974b6569f055492ead621aea805fed8d9cf387a1d057d5e4765d6cee1f0f16418e6b88181223871d0ff784f6017448
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C:\Users\Admin\AppData\Local\Temp\00000000.resFilesize
136B
MD54a9ce682821b51764911caca182234d8
SHA1c7ea028ca3b961ec7895a40dbb291798597d2b13
SHA25617caf89a636de4e8ecbd12ada8a24827803b97b6282f65d1facf93288d6361a5
SHA512212b821569aeb25b4809ce1b4a62306dc52df2c42245e2a18c05301a2b295dddf636a3c48540bb9755c8b24259589a5da3451896cd06df5cf38ce2ca5660c7ad
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C:\Users\Admin\AppData\Local\Temp\00000000.resFilesize
136B
MD553773afa59a6ae1b6ae569a4b7092bdb
SHA144733c901160422c4820ffc038649a0d8b8b2cd7
SHA2563d7670c6c27d0fc10b35c42d409449c640e609e7b471f95e75b9a178410c2112
SHA512e6d176c3a1088dc573eda4fa6108f94f56e3521cd1fe9b37e6213a8d7f17a3c562e8b4b8a9167ace14daf92443cdf10ac128f661b0222ecb4c8c8f543b350929
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C:\Users\Admin\AppData\Local\Temp\124151717393163.batFilesize
336B
MD53540e056349c6972905dc9706cd49418
SHA1492c20442d34d45a6d6790c720349b11ec591cde
SHA25673872a89440a2cba9d22bf4961c3d499ea2c72979c30c455f942374292fedadc
SHA512c949d147100aef59e382c03abf7b162ae62a4d43456eebd730fbedcf5f95f5e1a24f6e349690d52d75331878a6ee8f6b88a7162ee9cf2a49e142196b12d0133c
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C:\Users\Admin\AppData\Local\Temp\c.vbsFilesize
219B
MD55f6d40ca3c34b470113ed04d06a88ff4
SHA150629e7211ae43e32060686d6be17ebd492fd7aa
SHA2560fb5039a2fe7e90cdf3f22140d7f2103f94689b15609efe0edcc8430dd772fc1
SHA5124d4aa1abd2c9183202fd3f0a65b37f07ee0166ba6561f094c13c8ea59752c7bdd960e37c49583746d4464bc3b1dc0b63a1fe36a37ce7e5709cd76ed433befe35
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C:\Users\Admin\AppData\Local\Temp\c.wryFilesize
628B
MD5c3da9c6790105d338893ed4625b3303a
SHA16f0e09463a6d0d234881f7829e2afe5672351a4e
SHA256770d5b2564de14239a1a81d53c87bec837391916dfaf8f27f494460e27310bef
SHA5120fd96a2dd011cea59bf67ff54cecea3967558b934d86ca7500a29a34b7995a9d17de4117d07631e79a93b94cf16e3907ed11b0d69df61e57038ae80f53cef139
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C:\Users\Admin\AppData\Local\Temp\m.wryFilesize
42KB
MD5980b08bac152aff3f9b0136b616affa5
SHA12a9c9601ea038f790cc29379c79407356a3d25a3
SHA256402046ada270528c9ac38bbfa0152836fe30fb8e12192354e53b8397421430d9
SHA512100cda1f795781042b012498afd783fd6ff03b0068dbd07b2c2e163cd95e6c6e00755ce16b02b017693c9febc149ed02df9df9b607e2b9cca4b07e5bd420f496
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C:\Users\Admin\Documents\!Please Read Me!.txtFilesize
797B
MD5afa18cf4aa2660392111763fb93a8c3d
SHA1c219a3654a5f41ce535a09f2a188a464c3f5baf5
SHA256227082c719fd4394c1f2311a0877d8a302c5b092bcc49f853a5cf3d2945f42b0
SHA5124161f250d59b7d4d4a6c4f16639d66d21b2a9606de956d22ec00bedb006643fedbbb8e4cde9f6c0c977285918648314883ca91f3442d1125593bf2605f2d5c6b
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memory/1800-6-0x0000000010000000-0x0000000010012000-memory.dmpFilesize
72KB