wannacry | be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844

Analysis

max time kernel
77s
platform
windows11-21h2_x64
resource
win11-20240709-en
resource tags

arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
submitted
22-07-2024 14:19

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General

Target

ransom.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:

ransom.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SDCE70.tmp	ransom.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SDCE97.tmp	ransom.exe

Executes dropped EXE 4 IoCs

Processes:

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

pid process

3504 !WannaDecryptor!.exe
5040 !WannaDecryptor!.exe
4604 !WannaDecryptor!.exe
3364 !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:

ransom.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\\ransom.exe\" /r"	ransom.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-1-5-21-126710838-2490174220-686410903-1000\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

2716 taskkill.exe
784 taskkill.exe
2208 taskkill.exe
1796 taskkill.exe

pid	process
2716	taskkill.exe
784	taskkill.exe
2208	taskkill.exe
1796	taskkill.exe

Suspicious use of AdjustPrivilegeToken 49 IoCs

Processes:

taskkill.exetaskkill.exetaskkill.exetaskkill.exeWMIC.exevssvc.exe

description	pid	process
Token: SeDebugPrivilege	2716	taskkill.exe
Token: SeDebugPrivilege	2208	taskkill.exe
Token: SeDebugPrivilege	784	taskkill.exe
Token: SeDebugPrivilege	1796	taskkill.exe
Token: SeIncreaseQuotaPrivilege	4532	WMIC.exe
Token: SeSecurityPrivilege	4532	WMIC.exe
Token: SeTakeOwnershipPrivilege	4532	WMIC.exe
Token: SeLoadDriverPrivilege	4532	WMIC.exe
Token: SeSystemProfilePrivilege	4532	WMIC.exe
Token: SeSystemtimePrivilege	4532	WMIC.exe
Token: SeProfSingleProcessPrivilege	4532	WMIC.exe
Token: SeIncBasePriorityPrivilege	4532	WMIC.exe
Token: SeCreatePagefilePrivilege	4532	WMIC.exe
Token: SeBackupPrivilege	4532	WMIC.exe
Token: SeRestorePrivilege	4532	WMIC.exe
Token: SeShutdownPrivilege	4532	WMIC.exe
Token: SeDebugPrivilege	4532	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4532	WMIC.exe
Token: SeRemoteShutdownPrivilege	4532	WMIC.exe
Token: SeUndockPrivilege	4532	WMIC.exe
Token: SeManageVolumePrivilege	4532	WMIC.exe
Token: 33	4532	WMIC.exe
Token: 34	4532	WMIC.exe
Token: 35	4532	WMIC.exe
Token: 36	4532	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4532	WMIC.exe
Token: SeSecurityPrivilege	4532	WMIC.exe
Token: SeTakeOwnershipPrivilege	4532	WMIC.exe
Token: SeLoadDriverPrivilege	4532	WMIC.exe
Token: SeSystemProfilePrivilege	4532	WMIC.exe
Token: SeSystemtimePrivilege	4532	WMIC.exe
Token: SeProfSingleProcessPrivilege	4532	WMIC.exe
Token: SeIncBasePriorityPrivilege	4532	WMIC.exe
Token: SeCreatePagefilePrivilege	4532	WMIC.exe
Token: SeBackupPrivilege	4532	WMIC.exe
Token: SeRestorePrivilege	4532	WMIC.exe
Token: SeShutdownPrivilege	4532	WMIC.exe
Token: SeDebugPrivilege	4532	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4532	WMIC.exe
Token: SeRemoteShutdownPrivilege	4532	WMIC.exe
Token: SeUndockPrivilege	4532	WMIC.exe
Token: SeManageVolumePrivilege	4532	WMIC.exe
Token: 33	4532	WMIC.exe
Token: 34	4532	WMIC.exe
Token: 35	4532	WMIC.exe
Token: 36	4532	WMIC.exe
Token: SeBackupPrivilege	1168	vssvc.exe
Token: SeRestorePrivilege	1168	vssvc.exe
Token: SeAuditPrivilege	1168	vssvc.exe

Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

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

pid	process
3504	!WannaDecryptor!.exe
3504	!WannaDecryptor!.exe
5040	!WannaDecryptor!.exe
5040	!WannaDecryptor!.exe
4604	!WannaDecryptor!.exe
4604	!WannaDecryptor!.exe
3364	!WannaDecryptor!.exe
3364	!WannaDecryptor!.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

ransom.execmd.execmd.exe!WannaDecryptor!.execmd.exe

description	pid	process	target process
PID 3512 wrote to memory of 552	3512	ransom.exe	cmd.exe
PID 3512 wrote to memory of 552	3512	ransom.exe	cmd.exe
PID 3512 wrote to memory of 552	3512	ransom.exe	cmd.exe
PID 552 wrote to memory of 4508	552	cmd.exe	cscript.exe
PID 552 wrote to memory of 4508	552	cmd.exe	cscript.exe
PID 552 wrote to memory of 4508	552	cmd.exe	cscript.exe
PID 3512 wrote to memory of 3504	3512	ransom.exe	!WannaDecryptor!.exe
PID 3512 wrote to memory of 3504	3512	ransom.exe	!WannaDecryptor!.exe
PID 3512 wrote to memory of 3504	3512	ransom.exe	!WannaDecryptor!.exe
PID 3512 wrote to memory of 2716	3512	ransom.exe	taskkill.exe
PID 3512 wrote to memory of 2716	3512	ransom.exe	taskkill.exe
PID 3512 wrote to memory of 2716	3512	ransom.exe	taskkill.exe
PID 3512 wrote to memory of 784	3512	ransom.exe	taskkill.exe
PID 3512 wrote to memory of 784	3512	ransom.exe	taskkill.exe
PID 3512 wrote to memory of 784	3512	ransom.exe	taskkill.exe
PID 3512 wrote to memory of 2208	3512	ransom.exe	taskkill.exe
PID 3512 wrote to memory of 2208	3512	ransom.exe	taskkill.exe
PID 3512 wrote to memory of 2208	3512	ransom.exe	taskkill.exe
PID 3512 wrote to memory of 1796	3512	ransom.exe	taskkill.exe
PID 3512 wrote to memory of 1796	3512	ransom.exe	taskkill.exe
PID 3512 wrote to memory of 1796	3512	ransom.exe	taskkill.exe
PID 3512 wrote to memory of 5040	3512	ransom.exe	!WannaDecryptor!.exe
PID 3512 wrote to memory of 5040	3512	ransom.exe	!WannaDecryptor!.exe
PID 3512 wrote to memory of 5040	3512	ransom.exe	!WannaDecryptor!.exe
PID 3512 wrote to memory of 3292	3512	ransom.exe	cmd.exe
PID 3512 wrote to memory of 3292	3512	ransom.exe	cmd.exe
PID 3512 wrote to memory of 3292	3512	ransom.exe	cmd.exe
PID 3292 wrote to memory of 4604	3292	cmd.exe	!WannaDecryptor!.exe
PID 3292 wrote to memory of 4604	3292	cmd.exe	!WannaDecryptor!.exe
PID 3292 wrote to memory of 4604	3292	cmd.exe	!WannaDecryptor!.exe
PID 3512 wrote to memory of 3364	3512	ransom.exe	!WannaDecryptor!.exe
PID 3512 wrote to memory of 3364	3512	ransom.exe	!WannaDecryptor!.exe
PID 3512 wrote to memory of 3364	3512	ransom.exe	!WannaDecryptor!.exe
PID 4604 wrote to memory of 1368	4604	!WannaDecryptor!.exe	cmd.exe
PID 4604 wrote to memory of 1368	4604	!WannaDecryptor!.exe	cmd.exe
PID 4604 wrote to memory of 1368	4604	!WannaDecryptor!.exe	cmd.exe
PID 1368 wrote to memory of 4532	1368	cmd.exe	WMIC.exe
PID 1368 wrote to memory of 4532	1368	cmd.exe	WMIC.exe
PID 1368 wrote to memory of 4532	1368	cmd.exe	WMIC.exe

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\ransom.exe
"C:\Users\Admin\AppData\Local\Temp\ransom.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3512

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c 205431721657980.bat
2⤵
- Suspicious use of WriteProcessMemory
PID:552

C:\Windows\SysWOW64\cscript.exe
cscript //nologo c.vbs
3⤵
PID:4508

C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
!WannaDecryptor!.exe f
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:3504

C:\Windows\SysWOW64\taskkill.exe
taskkill /f /im MSExchange*
2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2716

C:\Windows\SysWOW64\taskkill.exe
taskkill /f /im Microsoft.Exchange.*
2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:784

C:\Windows\SysWOW64\taskkill.exe
taskkill /f /im sqlserver.exe
2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2208

C:\Windows\SysWOW64\taskkill.exe
taskkill /f /im sqlwriter.exe
2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1796

C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
!WannaDecryptor!.exe c
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:5040

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c start /b !WannaDecryptor!.exe v
2⤵
- Suspicious use of WriteProcessMemory
PID:3292

C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
!WannaDecryptor!.exe v
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4604

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⤵
- Suspicious use of WriteProcessMemory
PID:1368

C:\Windows\SysWOW64\Wbem\WMIC.exe
wmic shadowcopy delete
5⤵
- Suspicious use of AdjustPrivilegeToken
PID:4532

C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
!WannaDecryptor!.exe
2⤵
- Executes dropped EXE
- Sets desktop wallpaper using registry
- Suspicious use of SetWindowsHookEx
PID:3364

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1168

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.lnk

Filesize
1KB

MD5
5acef49f43a7aa09de31a4107b5c6e2a

SHA1
8c04c19a80dd0b2bc5277ba75298713fd4f94fd3

SHA256
e2b8ce6edd4eb851d5688a091270e7dd3e8c1d1f16309795216db71ba99bf593

SHA512
7fa7b7b8034e1d8f8decc69ec8afb6cb636dc47836cb52aa294aa15b6334e027b33a2654467b6b8a791fa1359534758d09e664973ac27034a82612a9433bdb09

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

Filesize
136B

MD5
d303f1bb65b8458c5f348bd28236c8a1

SHA1
eb7c06e8bbeccec537fc16223b06ae66a7e04dcf

SHA256
fad488193f23f592ee516be7569edf48379f6f7e350ce5fa2d744077948098b0

SHA512
ec343f1972bcd725f720e5215927db012558f125903c155c2ca7593c5407851d8de7831644c18f566d661cd1b5b81d1b66e4f7f44363a1bc75b2f49ea634bcac

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

Filesize
136B

MD5
82db9d1652494d04f3f84ce6303aabfb

SHA1
849901b528707e1bc55d6eb2d7afdf454d69d6d7

SHA256
439f4ac8953d3d3f67c07e663a270c038aac812293be6e3cc192339dec865ca5

SHA512
832fb4f2bca70b5d9218999d57e52cd6dea0934d18876368b15b5633c4536e893af54d0ce0bac47e7ce94d59dc1dbdf41c4bf8dc12494ca7a31ea18d2cd9150c

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

Filesize
136B

MD5
f97470ed1a6669587dea2326dd2b784d

SHA1
8ace781dda4f2b7aaf6e96c3fc997c3cbec63ccd

SHA256
f8c2517432bdc27579f8fda44eb5e87149b144ada61629d6bda05242b1b91355

SHA512
189616ddd3cd86a9906af341644bf35e589098e239e36c3d5389bb9103f82c85c7677658ea223178f8c764ab79f26d8f476d33661afa13dc2b942de11ee8262b

Download Submit
C:\Users\Admin\AppData\Local\Temp\205431721657980.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
4f6d736213ab83cc7171a7cfac4a48e2

SHA1
b5bff5a1e18819b81ac5a22f34eac41bae8c3519

SHA256
af1de882ed2a71f26d749863c88d73af0d88651464fff32e2e26d6cb9ad6f597

SHA512
50bd958ee9ae7473e255124ee39218f4a8c69d0d0ce1fb473dbe039bb985fff11d1e5a4eb11e4f7e80067ac97815250c375304a64e082a4cf8bbb3261a1ecd78

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

Filesize
42KB

MD5
980b08bac152aff3f9b0136b616affa5

SHA1
2a9c9601ea038f790cc29379c79407356a3d25a3

SHA256
402046ada270528c9ac38bbfa0152836fe30fb8e12192354e53b8397421430d9

SHA512
100cda1f795781042b012498afd783fd6ff03b0068dbd07b2c2e163cd95e6c6e00755ce16b02b017693c9febc149ed02df9df9b607e2b9cca4b07e5bd420f496

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

Filesize
236KB

MD5
cf1416074cd7791ab80a18f9e7e219d9

SHA1
276d2ec82c518d887a8a3608e51c56fa28716ded

SHA256
78e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df

SHA512
0bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5

Download Submit
memory/3512-7-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download