wannacry | 593a4b3fb31a25c433f4c04fe6a9bdacfc30771ac41e3f394b81b0a13f6e5df8

Analysis

max time kernel
147s
max time network
99s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
14/05/2024, 12:24

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General

Target
Ransomware.WannaCrypt0r.v1.exe
Size 224KB
Sample240514-plkbysfe49
SHA256 be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844
MD5 5c7fb0927db37372da25f270708103a2
SHA1 120ed9279d85cbfa56e5b7779ffa7162074f7a29
SHA512 a15f97fad744ccf5f620e5aabb81f48507327b898a9aa4287051464019e0f89224c484e9691812e166471af9beaddcfc3deb2ba878658761f4800663beef7206
SSDEEP 3072:Y059femWRwTs/dbelj0X8/j84pcRXPlU3Upt3or4H84lK8PtpLzLsR/EfcZ:+5RwTs/dSXj84mRXPemxdBlPvLzLeZ
MD5 SHA1 SHA512 SSDEEP

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

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

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SD80FB.tmp	Ransomware.WannaCrypt0r.v1.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SD8354.tmp	Ransomware.WannaCrypt0r.v1.exe

Executes dropped EXE 4 IoCs

pid	Process
2092	!WannaDecryptor!.exe
2300	!WannaDecryptor!.exe
8	!WannaDecryptor!.exe
3580	!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

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft Update Task Scheduler = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Ransomware.WannaCrypt0r.v1.exe\" /r"	Ransomware.WannaCrypt0r.v1.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\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

pid	Process
3260	taskkill.exe
2144	taskkill.exe
3936	taskkill.exe
1708	taskkill.exe

Suspicious use of AdjustPrivilegeToken 49 IoCs

description	pid	Process
Token: SeDebugPrivilege	3936	taskkill.exe
Token: SeDebugPrivilege	3260	taskkill.exe
Token: SeDebugPrivilege	1708	taskkill.exe
Token: SeDebugPrivilege	2144	taskkill.exe
Token: SeIncreaseQuotaPrivilege	2744	WMIC.exe
Token: SeSecurityPrivilege	2744	WMIC.exe
Token: SeTakeOwnershipPrivilege	2744	WMIC.exe
Token: SeLoadDriverPrivilege	2744	WMIC.exe
Token: SeSystemProfilePrivilege	2744	WMIC.exe
Token: SeSystemtimePrivilege	2744	WMIC.exe
Token: SeProfSingleProcessPrivilege	2744	WMIC.exe
Token: SeIncBasePriorityPrivilege	2744	WMIC.exe
Token: SeCreatePagefilePrivilege	2744	WMIC.exe
Token: SeBackupPrivilege	2744	WMIC.exe
Token: SeRestorePrivilege	2744	WMIC.exe
Token: SeShutdownPrivilege	2744	WMIC.exe
Token: SeDebugPrivilege	2744	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2744	WMIC.exe
Token: SeRemoteShutdownPrivilege	2744	WMIC.exe
Token: SeUndockPrivilege	2744	WMIC.exe
Token: SeManageVolumePrivilege	2744	WMIC.exe
Token: 33	2744	WMIC.exe
Token: 34	2744	WMIC.exe
Token: 35	2744	WMIC.exe
Token: 36	2744	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2744	WMIC.exe
Token: SeSecurityPrivilege	2744	WMIC.exe
Token: SeTakeOwnershipPrivilege	2744	WMIC.exe
Token: SeLoadDriverPrivilege	2744	WMIC.exe
Token: SeSystemProfilePrivilege	2744	WMIC.exe
Token: SeSystemtimePrivilege	2744	WMIC.exe
Token: SeProfSingleProcessPrivilege	2744	WMIC.exe
Token: SeIncBasePriorityPrivilege	2744	WMIC.exe
Token: SeCreatePagefilePrivilege	2744	WMIC.exe
Token: SeBackupPrivilege	2744	WMIC.exe
Token: SeRestorePrivilege	2744	WMIC.exe
Token: SeShutdownPrivilege	2744	WMIC.exe
Token: SeDebugPrivilege	2744	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2744	WMIC.exe
Token: SeRemoteShutdownPrivilege	2744	WMIC.exe
Token: SeUndockPrivilege	2744	WMIC.exe
Token: SeManageVolumePrivilege	2744	WMIC.exe
Token: 33	2744	WMIC.exe
Token: 34	2744	WMIC.exe
Token: 35	2744	WMIC.exe
Token: 36	2744	WMIC.exe
Token: SeBackupPrivilege	4668	vssvc.exe
Token: SeRestorePrivilege	4668	vssvc.exe
Token: SeAuditPrivilege	4668	vssvc.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
2092	!WannaDecryptor!.exe
2092	!WannaDecryptor!.exe
2300	!WannaDecryptor!.exe
2300	!WannaDecryptor!.exe
8	!WannaDecryptor!.exe
8	!WannaDecryptor!.exe
3580	!WannaDecryptor!.exe
3580	!WannaDecryptor!.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 856 wrote to memory of 4920	856	Ransomware.WannaCrypt0r.v1.exe	82
PID 856 wrote to memory of 4920	856	Ransomware.WannaCrypt0r.v1.exe	82
PID 856 wrote to memory of 4920	856	Ransomware.WannaCrypt0r.v1.exe	82
PID 4920 wrote to memory of 2672	4920	cmd.exe	84
PID 4920 wrote to memory of 2672	4920	cmd.exe	84
PID 4920 wrote to memory of 2672	4920	cmd.exe	84
PID 856 wrote to memory of 2092	856	Ransomware.WannaCrypt0r.v1.exe	88
PID 856 wrote to memory of 2092	856	Ransomware.WannaCrypt0r.v1.exe	88
PID 856 wrote to memory of 2092	856	Ransomware.WannaCrypt0r.v1.exe	88
PID 856 wrote to memory of 3260	856	Ransomware.WannaCrypt0r.v1.exe	89
PID 856 wrote to memory of 3260	856	Ransomware.WannaCrypt0r.v1.exe	89
PID 856 wrote to memory of 3260	856	Ransomware.WannaCrypt0r.v1.exe	89
PID 856 wrote to memory of 2144	856	Ransomware.WannaCrypt0r.v1.exe	90
PID 856 wrote to memory of 2144	856	Ransomware.WannaCrypt0r.v1.exe	90
PID 856 wrote to memory of 2144	856	Ransomware.WannaCrypt0r.v1.exe	90
PID 856 wrote to memory of 3936	856	Ransomware.WannaCrypt0r.v1.exe	91
PID 856 wrote to memory of 3936	856	Ransomware.WannaCrypt0r.v1.exe	91
PID 856 wrote to memory of 3936	856	Ransomware.WannaCrypt0r.v1.exe	91
PID 856 wrote to memory of 1708	856	Ransomware.WannaCrypt0r.v1.exe	92
PID 856 wrote to memory of 1708	856	Ransomware.WannaCrypt0r.v1.exe	92
PID 856 wrote to memory of 1708	856	Ransomware.WannaCrypt0r.v1.exe	92
PID 856 wrote to memory of 2300	856	Ransomware.WannaCrypt0r.v1.exe	99
PID 856 wrote to memory of 2300	856	Ransomware.WannaCrypt0r.v1.exe	99
PID 856 wrote to memory of 2300	856	Ransomware.WannaCrypt0r.v1.exe	99
PID 856 wrote to memory of 368	856	Ransomware.WannaCrypt0r.v1.exe	100
PID 856 wrote to memory of 368	856	Ransomware.WannaCrypt0r.v1.exe	100
PID 856 wrote to memory of 368	856	Ransomware.WannaCrypt0r.v1.exe	100
PID 368 wrote to memory of 8	368	cmd.exe	102
PID 368 wrote to memory of 8	368	cmd.exe	102
PID 368 wrote to memory of 8	368	cmd.exe	102
PID 856 wrote to memory of 3580	856	Ransomware.WannaCrypt0r.v1.exe	103
PID 856 wrote to memory of 3580	856	Ransomware.WannaCrypt0r.v1.exe	103
PID 856 wrote to memory of 3580	856	Ransomware.WannaCrypt0r.v1.exe	103
PID 8 wrote to memory of 1540	8	!WannaDecryptor!.exe	105
PID 8 wrote to memory of 1540	8	!WannaDecryptor!.exe	105
PID 8 wrote to memory of 1540	8	!WannaDecryptor!.exe	105
PID 1540 wrote to memory of 2744	1540	cmd.exe	107
PID 1540 wrote to memory of 2744	1540	cmd.exe	107
PID 1540 wrote to memory of 2744	1540	cmd.exe	107

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\Ransomware.WannaCrypt0r.v1.exe
"C:\Users\Admin\AppData\Local\Temp\Ransomware.WannaCrypt0r.v1.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:856
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c 225511715689507.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4920
- - C:\Windows\SysWOW64\cscript.exe
    cscript //nologo c.vbs
    3⤵
    PID:2672
- C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
  !WannaDecryptor!.exe f
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2092
- C:\Windows\SysWOW64\taskkill.exe
  taskkill /f /im MSExchange*
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:3260
- C:\Windows\SysWOW64\taskkill.exe
  taskkill /f /im Microsoft.Exchange.*
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:2144
- C:\Windows\SysWOW64\taskkill.exe
  taskkill /f /im sqlserver.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:3936
- C:\Windows\SysWOW64\taskkill.exe
  taskkill /f /im sqlwriter.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:1708
- C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
  !WannaDecryptor!.exe c
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2300
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c start /b !WannaDecryptor!.exe v
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:368
- - C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
    !WannaDecryptor!.exe v
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:8
  - - 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:1540
    - - C:\Windows\SysWOW64\Wbem\WMIC.exe
        
        wmic shadowcopy delete
        5⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:2744
- C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
  !WannaDecryptor!.exe
  2⤵
  - Executes dropped EXE
  - Sets desktop wallpaper using registry
  - Suspicious use of SetWindowsHookEx
  PID:3580

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4668

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

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Downloads

!Please Read Me!.txt

Path C:\Users\Admin\AppData\Local\Temp\!Please Read Me!.txt
Size 797B
SHA256 227082c719fd4394c1f2311a0877d8a302c5b092bcc49f853a5cf3d2945f42b0
MD5 afa18cf4aa2660392111763fb93a8c3d
SHA1 c219a3654a5f41ce535a09f2a188a464c3f5baf5
SHA512 4161f250d59b7d4d4a6c4f16639d66d21b2a9606de956d22ec00bedb006643fedbbb8e4cde9f6c0c977285918648314883ca91f3442d1125593bf2605f2d5c6b
MD5 SHA1 SHA512

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!WannaDecryptor!.exe.lnk

Path C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe.lnk
Size 1KB
SHA256 1eb5a1275e6b384c5326bd42d68b6af5f7a9f441b633ae5789d0eec23c30c7d6
MD5 d823f12c9a76a954075173c56a943cc4
SHA1 25da9f0d44425c541bd24926195274a83a7d6f5c
SHA512 639105fe9cf64e540e2f8f4a100f85ad407d36ac778464e7dbeb8d62d80502b81a689dbc17d8d035d933d306f9175df5f22b88f45ddae4999d52de5537b123b0
MD5 SHA1 SHA512

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00000000.res

Path C:\Users\Admin\AppData\Local\Temp\00000000.res
Size 136B
SHA256 a520ee4785a77513bae9ccee931ef1a776156ab9c94f935872ea28e6d4bf3fd5
MD5 b11cebbe49d8da37fba9de90fa273ac9
SHA1 c38da390eca41d8670d771af91f2daf13e07f642
SHA512 a33687c858dca66424b44faa939777622f0cdd445b95bdebab777341cab3b2d75a543fc4d40374828a4df9526d5cd5cd54b8fabe7207bf4d504139228355d892
MD5 SHA1 SHA512

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00000000.res

Path C:\Users\Admin\AppData\Local\Temp\00000000.res
Size 136B
SHA256 9bc9886dba654869039133484ca2e3b4088a1aef38d159100c6c626abf41056a
MD5 117cf2580ea34e4d798c10a9a103cf9d
SHA1 088c990e2a440cb3493377a51f73e801c19cb1a1
SHA512 675d075aa808f35e96afa83e4676676532b03fb536d4b8225827927c3e60e529d6d0c9b7d1d99f09e95570192da5884f11d6607cacce463406050038c5983731
MD5 SHA1 SHA512

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00000000.res

Path C:\Users\Admin\AppData\Local\Temp\00000000.res
Size 136B
SHA256 564addce2268b97ef9ed50ec98a3a0d715b6d206b316877fd81d2d62b0a4d31f
MD5 4ba081b67af3cec9825625dccbd88ad8
SHA1 207acf25752837a99d8c8ad2eaee94e5eb123e44
SHA512 259075e817ff745a92a305a60574abe89a829bfce0f15061c9d95e6a1a5da69ad4f25a7901648d8cd9d904bff3f4262e71bb2dbc5d59569ec793d922f00d90b0
MD5 SHA1 SHA512

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225511715689507.bat

Path C:\Users\Admin\AppData\Local\Temp\225511715689507.bat
Size 336B
SHA256 73872a89440a2cba9d22bf4961c3d499ea2c72979c30c455f942374292fedadc
MD5 3540e056349c6972905dc9706cd49418
SHA1 492c20442d34d45a6d6790c720349b11ec591cde
SHA512 c949d147100aef59e382c03abf7b162ae62a4d43456eebd730fbedcf5f95f5e1a24f6e349690d52d75331878a6ee8f6b88a7162ee9cf2a49e142196b12d0133c
MD5 SHA1 SHA512

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c.vbs

Path C:\Users\Admin\AppData\Local\Temp\c.vbs
Size 219B
SHA256 0fb5039a2fe7e90cdf3f22140d7f2103f94689b15609efe0edcc8430dd772fc1
MD5 5f6d40ca3c34b470113ed04d06a88ff4
SHA1 50629e7211ae43e32060686d6be17ebd492fd7aa
SHA512 4d4aa1abd2c9183202fd3f0a65b37f07ee0166ba6561f094c13c8ea59752c7bdd960e37c49583746d4464bc3b1dc0b63a1fe36a37ce7e5709cd76ed433befe35
MD5 SHA1 SHA512

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c.wry

Path C:\Users\Admin\AppData\Local\Temp\c.wry
Size 628B
SHA256 decbe41f53448ab8b0f85b7def5f8d92db43580b1965a560c9f6e5537e5efbc0
MD5 f28d22f6e499528321cb290e12d94f92
SHA1 728b94ad0cea21a1174fcc6eb4078d4292eacd0b
SHA512 6f953dca48ba0f670fc578dcb2c83c5fabf0b9fd903ad8060e0f87b3e35da82a7b460ec50e8b188b01ef87a82d4bc09b7af74bd482901a24eb2e0740d23ef8d4
MD5 SHA1 SHA512

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c.wry

Path C:\Users\Admin\AppData\Local\Temp\c.wry
Size 628B
SHA256 bf22e8e18db1638673f47591a13d18ee58d8c6019314bab5a90be82ae3dc9538
MD5 663e55df21852bc8870b86bc38e58262
SHA1 1c691bf030ecfce78a9476fbdef3afe61724e6a9
SHA512 6a54be1fa549633a2fd888c559207437b8f6efda98bb18d491c8749f39e9754f1e680fa8e2d623777b5f665b2c04d19385c75ce4e61fb251db16018963a9a6f9
MD5 SHA1 SHA512

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m.wry

Path C:\Users\Admin\AppData\Local\Temp\m.wry
Size 42KB
SHA256 402046ada270528c9ac38bbfa0152836fe30fb8e12192354e53b8397421430d9
MD5 980b08bac152aff3f9b0136b616affa5
SHA1 2a9c9601ea038f790cc29379c79407356a3d25a3
SHA512 100cda1f795781042b012498afd783fd6ff03b0068dbd07b2c2e163cd95e6c6e00755ce16b02b017693c9febc149ed02df9df9b607e2b9cca4b07e5bd420f496
SSDEEP 384:S9sLTK3SWTsPzy3EFejoJQBO21z4oCTeo75Y3kmA31dv61QyU:S9s3mjoJb21zZrS14I
MD5 SHA1 SHA512 SSDEEP

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u.wry

Path C:\Users\Admin\AppData\Local\Temp\u.wry
Size 236KB
SHA256 78e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
MD5 cf1416074cd7791ab80a18f9e7e219d9
SHA1 276d2ec82c518d887a8a3608e51c56fa28716ded
SHA512 0bb0843a90edacaf1407e6a7273a9fbb896701635e4d9467392b7350ad25a1bec0c1ceef36737b4af5e5841936f4891436eded0533aa3d74c9a54efa42f024c5
SSDEEP 3072:KeJJ0eIVAnbWOECR+uJ/0EJzBelG4t1nXFnQamKNQHFZde5tHEGaa:bqrVOEgZJcYelG4tQamKN2ex
MD5 SHA1 SHA512 SSDEEP

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memory/856-6-0x0000000010000000-0x0000000010012000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads