Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-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\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
Processes:
Surprise.exedescription ioc process File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SD4C88.tmp Surprise.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SD4C8F.tmp Surprise.exe -
Executes dropped EXE 4 IoCs
Processes:
!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exepid process 4536 !WannaDecryptor!.exe 3384 !WannaDecryptor!.exe 2860 !WannaDecryptor!.exe 2988 !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
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 1 IoCs
Processes:
!WannaDecryptor!.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\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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Kills process with taskkill 4 IoCs
Processes:
taskkill.exetaskkill.exetaskkill.exetaskkill.exepid process 2576 taskkill.exe 4252 taskkill.exe 3388 taskkill.exe 2952 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 49 IoCs
Processes:
taskkill.exetaskkill.exetaskkill.exetaskkill.exeWMIC.exevssvc.exedescription pid process Token: SeDebugPrivilege 2952 taskkill.exe Token: SeDebugPrivilege 3388 taskkill.exe Token: SeDebugPrivilege 2576 taskkill.exe Token: SeDebugPrivilege 4252 taskkill.exe Token: SeIncreaseQuotaPrivilege 1540 WMIC.exe Token: SeSecurityPrivilege 1540 WMIC.exe Token: SeTakeOwnershipPrivilege 1540 WMIC.exe Token: SeLoadDriverPrivilege 1540 WMIC.exe Token: SeSystemProfilePrivilege 1540 WMIC.exe Token: SeSystemtimePrivilege 1540 WMIC.exe Token: SeProfSingleProcessPrivilege 1540 WMIC.exe Token: SeIncBasePriorityPrivilege 1540 WMIC.exe Token: SeCreatePagefilePrivilege 1540 WMIC.exe Token: SeBackupPrivilege 1540 WMIC.exe Token: SeRestorePrivilege 1540 WMIC.exe Token: SeShutdownPrivilege 1540 WMIC.exe Token: SeDebugPrivilege 1540 WMIC.exe Token: SeSystemEnvironmentPrivilege 1540 WMIC.exe Token: SeRemoteShutdownPrivilege 1540 WMIC.exe Token: SeUndockPrivilege 1540 WMIC.exe Token: SeManageVolumePrivilege 1540 WMIC.exe Token: 33 1540 WMIC.exe Token: 34 1540 WMIC.exe Token: 35 1540 WMIC.exe Token: 36 1540 WMIC.exe Token: SeIncreaseQuotaPrivilege 1540 WMIC.exe Token: SeSecurityPrivilege 1540 WMIC.exe Token: SeTakeOwnershipPrivilege 1540 WMIC.exe Token: SeLoadDriverPrivilege 1540 WMIC.exe Token: SeSystemProfilePrivilege 1540 WMIC.exe Token: SeSystemtimePrivilege 1540 WMIC.exe Token: SeProfSingleProcessPrivilege 1540 WMIC.exe Token: SeIncBasePriorityPrivilege 1540 WMIC.exe Token: SeCreatePagefilePrivilege 1540 WMIC.exe Token: SeBackupPrivilege 1540 WMIC.exe Token: SeRestorePrivilege 1540 WMIC.exe Token: SeShutdownPrivilege 1540 WMIC.exe Token: SeDebugPrivilege 1540 WMIC.exe Token: SeSystemEnvironmentPrivilege 1540 WMIC.exe Token: SeRemoteShutdownPrivilege 1540 WMIC.exe Token: SeUndockPrivilege 1540 WMIC.exe Token: SeManageVolumePrivilege 1540 WMIC.exe Token: 33 1540 WMIC.exe Token: 34 1540 WMIC.exe Token: 35 1540 WMIC.exe Token: 36 1540 WMIC.exe Token: SeBackupPrivilege 4868 vssvc.exe Token: SeRestorePrivilege 4868 vssvc.exe Token: SeAuditPrivilege 4868 vssvc.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
Processes:
!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exepid process 4536 !WannaDecryptor!.exe 4536 !WannaDecryptor!.exe 3384 !WannaDecryptor!.exe 3384 !WannaDecryptor!.exe 2860 !WannaDecryptor!.exe 2860 !WannaDecryptor!.exe 2988 !WannaDecryptor!.exe 2988 !WannaDecryptor!.exe -
Suspicious use of WriteProcessMemory 39 IoCs
Processes:
Surprise.execmd.execmd.exe!WannaDecryptor!.execmd.exedescription pid process target process PID 1668 wrote to memory of 1760 1668 Surprise.exe cmd.exe PID 1668 wrote to memory of 1760 1668 Surprise.exe cmd.exe PID 1668 wrote to memory of 1760 1668 Surprise.exe cmd.exe PID 1760 wrote to memory of 1740 1760 cmd.exe cscript.exe PID 1760 wrote to memory of 1740 1760 cmd.exe cscript.exe PID 1760 wrote to memory of 1740 1760 cmd.exe cscript.exe PID 1668 wrote to memory of 4536 1668 Surprise.exe !WannaDecryptor!.exe PID 1668 wrote to memory of 4536 1668 Surprise.exe !WannaDecryptor!.exe PID 1668 wrote to memory of 4536 1668 Surprise.exe !WannaDecryptor!.exe PID 1668 wrote to memory of 2952 1668 Surprise.exe taskkill.exe PID 1668 wrote to memory of 2952 1668 Surprise.exe taskkill.exe PID 1668 wrote to memory of 2952 1668 Surprise.exe taskkill.exe PID 1668 wrote to memory of 3388 1668 Surprise.exe taskkill.exe PID 1668 wrote to memory of 3388 1668 Surprise.exe taskkill.exe PID 1668 wrote to memory of 3388 1668 Surprise.exe taskkill.exe PID 1668 wrote to memory of 4252 1668 Surprise.exe taskkill.exe PID 1668 wrote to memory of 4252 1668 Surprise.exe taskkill.exe PID 1668 wrote to memory of 4252 1668 Surprise.exe taskkill.exe PID 1668 wrote to memory of 2576 1668 Surprise.exe taskkill.exe PID 1668 wrote to memory of 2576 1668 Surprise.exe taskkill.exe PID 1668 wrote to memory of 2576 1668 Surprise.exe taskkill.exe PID 1668 wrote to memory of 3384 1668 Surprise.exe !WannaDecryptor!.exe PID 1668 wrote to memory of 3384 1668 Surprise.exe !WannaDecryptor!.exe PID 1668 wrote to memory of 3384 1668 Surprise.exe !WannaDecryptor!.exe PID 1668 wrote to memory of 4956 1668 Surprise.exe cmd.exe PID 1668 wrote to memory of 4956 1668 Surprise.exe cmd.exe PID 1668 wrote to memory of 4956 1668 Surprise.exe cmd.exe PID 4956 wrote to memory of 2860 4956 cmd.exe !WannaDecryptor!.exe PID 4956 wrote to memory of 2860 4956 cmd.exe !WannaDecryptor!.exe PID 4956 wrote to memory of 2860 4956 cmd.exe !WannaDecryptor!.exe PID 1668 wrote to memory of 2988 1668 Surprise.exe !WannaDecryptor!.exe PID 1668 wrote to memory of 2988 1668 Surprise.exe !WannaDecryptor!.exe PID 1668 wrote to memory of 2988 1668 Surprise.exe !WannaDecryptor!.exe PID 2860 wrote to memory of 1408 2860 !WannaDecryptor!.exe cmd.exe PID 2860 wrote to memory of 1408 2860 !WannaDecryptor!.exe cmd.exe PID 2860 wrote to memory of 1408 2860 !WannaDecryptor!.exe cmd.exe PID 1408 wrote to memory of 1540 1408 cmd.exe WMIC.exe PID 1408 wrote to memory of 1540 1408 cmd.exe WMIC.exe PID 1408 wrote to memory of 1540 1408 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
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1668 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c 96001717393163.bat2⤵
- Suspicious use of WriteProcessMemory
PID:1760 -
C:\Windows\SysWOW64\cscript.execscript //nologo c.vbs3⤵PID:1740
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C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe f2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4536 -
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im MSExchange*2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2952 -
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im Microsoft.Exchange.*2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3388 -
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im sqlserver.exe2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4252 -
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im sqlwriter.exe2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2576 -
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe c2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:3384 -
C:\Windows\SysWOW64\cmd.execmd.exe /c start /b !WannaDecryptor!.exe v2⤵
- Suspicious use of WriteProcessMemory
PID:4956 -
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe v3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2860 -
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:1408 -
C:\Windows\SysWOW64\Wbem\WMIC.exewmic shadowcopy delete5⤵
- Suspicious use of AdjustPrivilegeToken
PID:1540 -
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe!WannaDecryptor!.exe2⤵
- Executes dropped EXE
- Sets desktop wallpaper using registry
- Suspicious use of SetWindowsHookEx
PID:2988
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4868
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\!Please Read Me!.txtFilesize
797B
MD5afa18cf4aa2660392111763fb93a8c3d
SHA1c219a3654a5f41ce535a09f2a188a464c3f5baf5
SHA256227082c719fd4394c1f2311a0877d8a302c5b092bcc49f853a5cf3d2945f42b0
SHA5124161f250d59b7d4d4a6c4f16639d66d21b2a9606de956d22ec00bedb006643fedbbb8e4cde9f6c0c977285918648314883ca91f3442d1125593bf2605f2d5c6b
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C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe.lnkFilesize
1KB
MD53bcfb8d1bcec6d5a97031809ce3972fa
SHA10220416d1f1a0f1d00c62c207e4f21bd6dbc56f7
SHA256256cf91da994be620da6f36202d96fe384db68e6aedf5a1d495aff9fc0a3e195
SHA512a95b40958f673e8044715bc61459c2872ed0b7b60b80230223a430cb59ac0d8e85f8a361fe15414490b3e43128ece3b1d1f621729e1b089b647444d493d35e22
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C:\Users\Admin\AppData\Local\Temp\00000000.resFilesize
136B
MD55500efc162a01fd956bdeb3a7612bd02
SHA128c7cea4a42fc719693befb54c00455fe7c89f8e
SHA256c9600d9e4538f0d09bbad97698e5584865e9ea2eaca2eff0d2d1a410a3f9717f
SHA51270e4f03391f467b74f631f712caa08a6fd98740d147b4e1af81e1f1ff1b9114cd5eb1d5506b3e8b70bc0324a905bda6bd0f7035aec14872555849ca8137b4609
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C:\Users\Admin\AppData\Local\Temp\00000000.resFilesize
136B
MD5012618beb0d8241eb38bbce756ccf29c
SHA1c76e0a9a9022de438a79bc59b167ba9e0aae99f6
SHA256865d486d6d7106a84a0c5ab3ce2b901071677cb975e4f6ac9a7cc81452de1eff
SHA512101864ec39ad490f0d401cdf5926d21415b4ecde8a5736a8c968c14573a8858c4956ee3050ea00777a398fc947844bd2504ae7ea759516f7867c17a56f1822c7
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C:\Users\Admin\AppData\Local\Temp\00000000.resFilesize
136B
MD53783c4288230c6e45bf6a7dd740ca126
SHA1743c01cf8c2a9e44a877bca8cc7b8f0ee3f57985
SHA256ba43f40331b7a7834d60e16cd750fd77f65eddc2c1269cbe1e8c36ac78af74c7
SHA51201546de835ab2c06086fb8f2d52a57e39b05ba04ecb5caadba46c54eb1c903816bb2148be4c3c490f7e6d2deaf10cd804895caf52b7061beea91b91911c345f8
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C:\Users\Admin\AppData\Local\Temp\96001717393163.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
MD5ed261fab3ec1978acce1f15e935ee60b
SHA1de553083f05758817329e6e904220a61c5520db2
SHA25680fda9f4b5a0f7358d85073a972d41061a908a35725dd45c72fd4047ca511045
SHA51281decd70d5e99e79680f810a2f539bed10ee876d08eaec3e9d561dfcbd09cf7bc81fe10e19ef396b425777eeae49db0a3e5f892cc419e8fac7c3cb7fb7dd42cf
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C:\Users\Admin\AppData\Local\Temp\m.wryFilesize
42KB
MD5980b08bac152aff3f9b0136b616affa5
SHA12a9c9601ea038f790cc29379c79407356a3d25a3
SHA256402046ada270528c9ac38bbfa0152836fe30fb8e12192354e53b8397421430d9
SHA512100cda1f795781042b012498afd783fd6ff03b0068dbd07b2c2e163cd95e6c6e00755ce16b02b017693c9febc149ed02df9df9b607e2b9cca4b07e5bd420f496
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C:\Users\Admin\AppData\Local\Temp\u.wryFilesize
236KB
MD5cf1416074cd7791ab80a18f9e7e219d9
SHA1276d2ec82c518d887a8a3608e51c56fa28716ded
SHA25678e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
SHA5120bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5
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memory/1668-6-0x0000000010000000-0x0000000010012000-memory.dmpFilesize
72KB