wannacry | be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844

Analysis

max time kernel
22s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
07-06-2024 01:21

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General

Target

WannaCry.exe
Size

224KB
MD5

5c7fb0927db37372da25f270708103a2
SHA1

120ed9279d85cbfa56e5b7779ffa7162074f7a29
SHA256

be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844
SHA512

a15f97fad744ccf5f620e5aabb81f48507327b898a9aa4287051464019e0f89224c484e9691812e166471af9beaddcfc3deb2ba878658761f4800663beef7206
SSDEEP

3072:Y059femWRwTs/dbelj0X8/j84pcRXPlU3Upt3or4H84lK8PtpLzLsR/EfcZ:+5RwTs/dSXj84mRXPemxdBlPvLzLeZ

Score

10^/10

wannacry defense_evasion execution impact persistence ransomware spyware stealer worm

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\!Please Read Me!.txt

Family

wannacry

Ransom Note

Q: What's wrong with my files? A: Ooops, your important files are encrypted. It means you will not be able to access them anymore until they are decrypted. If you follow our instructions we guarantee that you can decrypt all your files quickly and safely! Let's start decrypting! Q: What do I do? A: First, you need to pay service fees for the decryption. Please send $300 worth of bitcoin to this bitcoin address: 15zGqZCTcys6eCjDkE3DypCjXi6QWRV6V1 Next, please find the decrypt software on your desktop, an executable file named "!WannaDecryptor!.exe". If it does not exsit, download the software from the address below. (You may need to disable your antivirus for a while.) rar password: wcry123 Run and follow the instructions! �

Wallets

15zGqZCTcys6eCjDkE3DypCjXi6QWRV6V1

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Drops startup file 2 IoCs

Processes:

WannaCry.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SD7AC3.tmp	WannaCry.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SD7DA8.tmp	WannaCry.exe

Executes dropped EXE 4 IoCs

Processes:

!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exe

pid process

4068 !WannaDecryptor!.exe
1324 !WannaDecryptor!.exe
2692 !WannaDecryptor!.exe
3528 !WannaDecryptor!.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

WannaCry.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft Update Task Scheduler = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\WannaCry.exe\" /r"	WannaCry.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

!WannaDecryptor!.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\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).

System Information Discovery
T1082
Kills process with taskkill 4 IoCs
evasion

Processes:

taskkill.exetaskkill.exetaskkill.exetaskkill.exe

pid process

3704 taskkill.exe
1900 taskkill.exe
4268 taskkill.exe
2976 taskkill.exe

pid	process
3704	taskkill.exe
1900	taskkill.exe
4268	taskkill.exe
2976	taskkill.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

taskkill.exetaskkill.exetaskkill.exetaskkill.exe

description	pid	process
Token: SeDebugPrivilege	2976	taskkill.exe
Token: SeDebugPrivilege	4268	taskkill.exe
Token: SeDebugPrivilege	1900	taskkill.exe
Token: SeDebugPrivilege	3704	taskkill.exe

Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exe!WannaDecryptor!.exe

pid	process
4068	!WannaDecryptor!.exe
4068	!WannaDecryptor!.exe
1324	!WannaDecryptor!.exe
1324	!WannaDecryptor!.exe
2692	!WannaDecryptor!.exe
2692	!WannaDecryptor!.exe
3528	!WannaDecryptor!.exe
3528	!WannaDecryptor!.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

WannaCry.execmd.execmd.exe!WannaDecryptor!.exe

description	pid	process	target process
PID 3716 wrote to memory of 1604	3716	WannaCry.exe	cmd.exe
PID 3716 wrote to memory of 1604	3716	WannaCry.exe	cmd.exe
PID 3716 wrote to memory of 1604	3716	WannaCry.exe	cmd.exe
PID 1604 wrote to memory of 1744	1604	cmd.exe	cscript.exe
PID 1604 wrote to memory of 1744	1604	cmd.exe	cscript.exe
PID 1604 wrote to memory of 1744	1604	cmd.exe	cscript.exe
PID 3716 wrote to memory of 4068	3716	WannaCry.exe	!WannaDecryptor!.exe
PID 3716 wrote to memory of 4068	3716	WannaCry.exe	!WannaDecryptor!.exe
PID 3716 wrote to memory of 4068	3716	WannaCry.exe	!WannaDecryptor!.exe
PID 3716 wrote to memory of 3704	3716	WannaCry.exe	taskkill.exe
PID 3716 wrote to memory of 3704	3716	WannaCry.exe	taskkill.exe
PID 3716 wrote to memory of 3704	3716	WannaCry.exe	taskkill.exe
PID 3716 wrote to memory of 2976	3716	WannaCry.exe	taskkill.exe
PID 3716 wrote to memory of 2976	3716	WannaCry.exe	taskkill.exe
PID 3716 wrote to memory of 2976	3716	WannaCry.exe	taskkill.exe
PID 3716 wrote to memory of 4268	3716	WannaCry.exe	taskkill.exe
PID 3716 wrote to memory of 4268	3716	WannaCry.exe	taskkill.exe
PID 3716 wrote to memory of 4268	3716	WannaCry.exe	taskkill.exe
PID 3716 wrote to memory of 1900	3716	WannaCry.exe	taskkill.exe
PID 3716 wrote to memory of 1900	3716	WannaCry.exe	taskkill.exe
PID 3716 wrote to memory of 1900	3716	WannaCry.exe	taskkill.exe
PID 3716 wrote to memory of 1324	3716	WannaCry.exe	!WannaDecryptor!.exe
PID 3716 wrote to memory of 1324	3716	WannaCry.exe	!WannaDecryptor!.exe
PID 3716 wrote to memory of 1324	3716	WannaCry.exe	!WannaDecryptor!.exe
PID 3716 wrote to memory of 572	3716	WannaCry.exe	cmd.exe
PID 3716 wrote to memory of 572	3716	WannaCry.exe	cmd.exe
PID 3716 wrote to memory of 572	3716	WannaCry.exe	cmd.exe
PID 572 wrote to memory of 2692	572	cmd.exe	!WannaDecryptor!.exe
PID 572 wrote to memory of 2692	572	cmd.exe	!WannaDecryptor!.exe
PID 572 wrote to memory of 2692	572	cmd.exe	!WannaDecryptor!.exe
PID 3716 wrote to memory of 3528	3716	WannaCry.exe	!WannaDecryptor!.exe
PID 3716 wrote to memory of 3528	3716	WannaCry.exe	!WannaDecryptor!.exe
PID 3716 wrote to memory of 3528	3716	WannaCry.exe	!WannaDecryptor!.exe
PID 2692 wrote to memory of 3512	2692	!WannaDecryptor!.exe	cmd.exe
PID 2692 wrote to memory of 3512	2692	!WannaDecryptor!.exe	cmd.exe
PID 2692 wrote to memory of 3512	2692	!WannaDecryptor!.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\WannaCry.exe
"C:\Users\Admin\AppData\Local\Temp\WannaCry.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3716

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c 197981717723354.bat
2⤵
- Suspicious use of WriteProcessMemory
PID:1604

C:\Windows\SysWOW64\cscript.exe
cscript //nologo c.vbs
3⤵
PID:1744

C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
!WannaDecryptor!.exe f
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4068

C:\Windows\SysWOW64\taskkill.exe
taskkill /f /im MSExchange*
2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3704

C:\Windows\SysWOW64\taskkill.exe
taskkill /f /im Microsoft.Exchange.*
2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2976

C:\Windows\SysWOW64\taskkill.exe
taskkill /f /im sqlserver.exe
2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4268

C:\Windows\SysWOW64\taskkill.exe
taskkill /f /im sqlwriter.exe
2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1900

C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
!WannaDecryptor!.exe c
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1324

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c start /b !WannaDecryptor!.exe v
2⤵
- Suspicious use of WriteProcessMemory
PID:572

C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
!WannaDecryptor!.exe v
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2692

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet
4⤵
PID:3512

C:\Windows\SysWOW64\Wbem\WMIC.exe
wmic shadowcopy delete
5⤵
PID:1276

C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
!WannaDecryptor!.exe
2⤵
- Executes dropped EXE
- Sets desktop wallpaper using registry
- Suspicious use of SetWindowsHookEx
PID:3528

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
PID:3120

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\!Please Read Me!.txt

Filesize
797B

MD5
afa18cf4aa2660392111763fb93a8c3d

SHA1
c219a3654a5f41ce535a09f2a188a464c3f5baf5

SHA256
227082c719fd4394c1f2311a0877d8a302c5b092bcc49f853a5cf3d2945f42b0

SHA512
4161f250d59b7d4d4a6c4f16639d66d21b2a9606de956d22ec00bedb006643fedbbb8e4cde9f6c0c977285918648314883ca91f3442d1125593bf2605f2d5c6b

Download Submit
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe

Filesize
236KB

MD5
cf1416074cd7791ab80a18f9e7e219d9

SHA1
276d2ec82c518d887a8a3608e51c56fa28716ded

SHA256
78e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df

SHA512
0bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5

Download Submit
C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe.lnk

Filesize
1KB

MD5
17b898b6d4e09d878fe910486b40db02

SHA1
0f96abae98a877b33a0f41a2a22393ad5e9f093a

SHA256
3219ed0f9acc39ef8825d914eca1f00e3956a8c9502550c242dca99e6739bd33

SHA512
6ce614fe5c39e4767edd3c35a3062b82a97ffb5c7467b1c6a6d25818d166debfddcf82becf990a8b7b0da8645423b154aba397d2c0e6dee79eb7413607d4020f

Download Submit
C:\Users\Admin\AppData\Local\Temp\00000000.res

Filesize
136B

MD5
4b4a50e132df6a0a1bc144327e815f08

SHA1
b4aff4efbddaf10581320e203e2b1b27496b3493

SHA256
cac60678c2f87723c85aaca704d1b07969f40d018af78e3e2bc347a1f2a10950

SHA512
745c91656230dbe54b9aefc4d20bb0307630d70363d2a97b8cc34f23c787e3ae7683b7fe7a8c329f38f55bf1f90fc320de2ee357d9eebe45444f2296e72a8de6

Download Submit
C:\Users\Admin\AppData\Local\Temp\00000000.res

Filesize
136B

MD5
09deeae0bd0e4b0a3fed7151b8b76686

SHA1
0e1b998f06144853867281603071846088306816

SHA256
47acacfb5a210512ee572dce3610959c71cc0bbe2c03e5498c40d7998376ba91

SHA512
a792d61c30447442003fe6e6da2e5cc1fecae9ee19129dcb5901fac3956ee4f6efac1b8c61520f50ecd895f59ea70e8bb2fd43fce8eab28740092865bd9a17c5

Download Submit
C:\Users\Admin\AppData\Local\Temp\197981717723354.bat

Filesize
336B

MD5
3540e056349c6972905dc9706cd49418

SHA1
492c20442d34d45a6d6790c720349b11ec591cde

SHA256
73872a89440a2cba9d22bf4961c3d499ea2c72979c30c455f942374292fedadc

SHA512
c949d147100aef59e382c03abf7b162ae62a4d43456eebd730fbedcf5f95f5e1a24f6e349690d52d75331878a6ee8f6b88a7162ee9cf2a49e142196b12d0133c

Download Submit
C:\Users\Admin\AppData\Local\Temp\c.vbs

Filesize
219B

MD5
5f6d40ca3c34b470113ed04d06a88ff4

SHA1
50629e7211ae43e32060686d6be17ebd492fd7aa

SHA256
0fb5039a2fe7e90cdf3f22140d7f2103f94689b15609efe0edcc8430dd772fc1

SHA512
4d4aa1abd2c9183202fd3f0a65b37f07ee0166ba6561f094c13c8ea59752c7bdd960e37c49583746d4464bc3b1dc0b63a1fe36a37ce7e5709cd76ed433befe35

Download Submit
C:\Users\Admin\AppData\Local\Temp\c.wry

Filesize
628B

MD5
181db35abda61403f0f0ceebf697a543

SHA1
1027b689484412b331af509d472339fb8f5b7906

SHA256
e5453be13563a8750d07a052ad64ff9ab99e678ab42a61038c82510a525cbf9e

SHA512
9fb30133de520bf5f53da6df9a3cbef9340983db94620cc514b15037d5ac541c0e175908d98e7dab5c5c452d118fe4b0834a163d8daaf0e7e1ede0b475c2385a

Download Submit
C:\Users\Admin\AppData\Local\Temp\m.wry

Filesize
42KB

MD5
980b08bac152aff3f9b0136b616affa5

SHA1
2a9c9601ea038f790cc29379c79407356a3d25a3

SHA256
402046ada270528c9ac38bbfa0152836fe30fb8e12192354e53b8397421430d9

SHA512
100cda1f795781042b012498afd783fd6ff03b0068dbd07b2c2e163cd95e6c6e00755ce16b02b017693c9febc149ed02df9df9b607e2b9cca4b07e5bd420f496

Download Submit
memory/3716-6-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download