wannacry | ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa

Target

important.exe
Size

3.4MB
MD5

84c82835a5d21bbcf75a61706d8ab549
SHA1

5ff465afaabcbf0150d1a3ab2c2e74f3a4426467
SHA256

ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa
SHA512

90723a50c20ba3643d625595fd6be8dcf88d70ff7f4b4719a88f055d5b3149a4231018ea30d375171507a147e59f73478c0c27948590794554d031e7d54b7244

Score

10^/10

wannacry discovery persistence ransomware spyware stealer worm

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\@[email protected]

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: 12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw Next, please find an application file named "@[email protected]". It is the decrypt software. Run and follow the instructions! (You may need to disable your antivirus for a while.) Q: How can I trust? A: Don't worry about decryption. We will decrypt your files surely because nobody will trust us if we cheat users. * If you need our assistance, send a message by clicking <Contact Us> on the decryptor window. �

Wallets

12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Executes dropped EXE 16 IoCs

pid	Process
1608	taskdl.exe
2788	@[email protected]
2664	@[email protected]
3852	taskhsvc.exe
428	taskdl.exe
1768	taskse.exe
1608	@[email protected]
216	taskdl.exe
2176	taskse.exe
2740	@[email protected]
2612	taskdl.exe
2496	taskse.exe
3632	@[email protected]
3740	taskse.exe
2780	@[email protected]
184	taskdl.exe

Modifies extensions of user files 16 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\StartUninstall.tif.WNCRY	important.exe
File created	C:\Users\Admin\Pictures\WaitBackup.tif.WNCRYT	important.exe
File opened for modification	C:\Users\Admin\Pictures\ResolveHide.tiff	important.exe
File created	C:\Users\Admin\Pictures\ResolveHide.tiff.WNCRYT	important.exe
File created	C:\Users\Admin\Pictures\TraceExport.tif.WNCRYT	important.exe
File created	C:\Users\Admin\Pictures\UpdateComplete.png.WNCRYT	important.exe
File renamed	C:\Users\Admin\Pictures\UpdateComplete.png.WNCRYT => C:\Users\Admin\Pictures\UpdateComplete.png.WNCRY	important.exe
File renamed	C:\Users\Admin\Pictures\WaitBackup.tif.WNCRYT => C:\Users\Admin\Pictures\WaitBackup.tif.WNCRY	important.exe
File opened for modification	C:\Users\Admin\Pictures\ResolveHide.tiff.WNCRY	important.exe
File created	C:\Users\Admin\Pictures\StartUninstall.tif.WNCRYT	important.exe
File renamed	C:\Users\Admin\Pictures\StartUninstall.tif.WNCRYT => C:\Users\Admin\Pictures\StartUninstall.tif.WNCRY	important.exe
File opened for modification	C:\Users\Admin\Pictures\UpdateComplete.png.WNCRY	important.exe
File opened for modification	C:\Users\Admin\Pictures\WaitBackup.tif.WNCRY	important.exe
File renamed	C:\Users\Admin\Pictures\ResolveHide.tiff.WNCRYT => C:\Users\Admin\Pictures\ResolveHide.tiff.WNCRY	important.exe
File renamed	C:\Users\Admin\Pictures\TraceExport.tif.WNCRYT => C:\Users\Admin\Pictures\TraceExport.tif.WNCRY	important.exe
File opened for modification	C:\Users\Admin\Pictures\TraceExport.tif.WNCRY	important.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SD36F6.tmp	important.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SD370C.tmp	important.exe

Loads dropped DLL 7 IoCs

pid	Process
3852	taskhsvc.exe
3852	taskhsvc.exe
3852	taskhsvc.exe
3852	taskhsvc.exe
3852	taskhsvc.exe
3852	taskhsvc.exe
3852	taskhsvc.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1460	icacls.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
T1081

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\dfevzalm316 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\tasksche.exe\""	reg.exe

Sets desktop wallpaper using registry 2 TTPs 2 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\@[email protected]"	important.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\@[email protected]"	@[email protected]

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Interacts with shadow copies 2 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
1216	vssadmin.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
3820	reg.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3852	taskhsvc.exe
3852	taskhsvc.exe
3852	taskhsvc.exe
3852	taskhsvc.exe
3852	taskhsvc.exe
3852	taskhsvc.exe

Suspicious use of AdjustPrivilegeToken 53 IoCs

description	pid	Process
Token: SeBackupPrivilege	2644	vssvc.exe
Token: SeRestorePrivilege	2644	vssvc.exe
Token: SeAuditPrivilege	2644	vssvc.exe
Token: SeIncreaseQuotaPrivilege	2780	WMIC.exe
Token: SeSecurityPrivilege	2780	WMIC.exe
Token: SeTakeOwnershipPrivilege	2780	WMIC.exe
Token: SeLoadDriverPrivilege	2780	WMIC.exe
Token: SeSystemProfilePrivilege	2780	WMIC.exe
Token: SeSystemtimePrivilege	2780	WMIC.exe
Token: SeProfSingleProcessPrivilege	2780	WMIC.exe
Token: SeIncBasePriorityPrivilege	2780	WMIC.exe
Token: SeCreatePagefilePrivilege	2780	WMIC.exe
Token: SeBackupPrivilege	2780	WMIC.exe
Token: SeRestorePrivilege	2780	WMIC.exe
Token: SeShutdownPrivilege	2780	WMIC.exe
Token: SeDebugPrivilege	2780	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2780	WMIC.exe
Token: SeRemoteShutdownPrivilege	2780	WMIC.exe
Token: SeUndockPrivilege	2780	WMIC.exe
Token: SeManageVolumePrivilege	2780	WMIC.exe
Token: 33	2780	WMIC.exe
Token: 34	2780	WMIC.exe
Token: 35	2780	WMIC.exe
Token: 36	2780	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2780	WMIC.exe
Token: SeSecurityPrivilege	2780	WMIC.exe
Token: SeTakeOwnershipPrivilege	2780	WMIC.exe
Token: SeLoadDriverPrivilege	2780	WMIC.exe
Token: SeSystemProfilePrivilege	2780	WMIC.exe
Token: SeSystemtimePrivilege	2780	WMIC.exe
Token: SeProfSingleProcessPrivilege	2780	WMIC.exe
Token: SeIncBasePriorityPrivilege	2780	WMIC.exe
Token: SeCreatePagefilePrivilege	2780	WMIC.exe
Token: SeBackupPrivilege	2780	WMIC.exe
Token: SeRestorePrivilege	2780	WMIC.exe
Token: SeShutdownPrivilege	2780	WMIC.exe
Token: SeDebugPrivilege	2780	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2780	WMIC.exe
Token: SeRemoteShutdownPrivilege	2780	WMIC.exe
Token: SeUndockPrivilege	2780	WMIC.exe
Token: SeManageVolumePrivilege	2780	WMIC.exe
Token: 33	2780	WMIC.exe
Token: 34	2780	WMIC.exe
Token: 35	2780	WMIC.exe
Token: 36	2780	WMIC.exe
Token: SeTcbPrivilege	1768	taskse.exe
Token: SeTcbPrivilege	1768	taskse.exe
Token: SeTcbPrivilege	2176	taskse.exe
Token: SeTcbPrivilege	2176	taskse.exe
Token: SeTcbPrivilege	2496	taskse.exe
Token: SeTcbPrivilege	2496	taskse.exe
Token: SeTcbPrivilege	3740	taskse.exe
Token: SeTcbPrivilege	3740	taskse.exe

Suspicious use of SetWindowsHookEx 9 IoCs

pid	Process
2788	@[email protected]
2664	@[email protected]
2788	@[email protected]
2664	@[email protected]
1608	@[email protected]
1608	@[email protected]
2740	@[email protected]
3632	@[email protected]
2780	@[email protected]

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3424 wrote to memory of 1380	3424	important.exe	75
PID 3424 wrote to memory of 1380	3424	important.exe	75
PID 3424 wrote to memory of 1380	3424	important.exe	75
PID 3424 wrote to memory of 1460	3424	important.exe	76
PID 3424 wrote to memory of 1460	3424	important.exe	76
PID 3424 wrote to memory of 1460	3424	important.exe	76
PID 3424 wrote to memory of 1608	3424	important.exe	80
PID 3424 wrote to memory of 1608	3424	important.exe	80
PID 3424 wrote to memory of 1608	3424	important.exe	80
PID 3424 wrote to memory of 3112	3424	important.exe	81
PID 3424 wrote to memory of 3112	3424	important.exe	81
PID 3424 wrote to memory of 3112	3424	important.exe	81
PID 3112 wrote to memory of 3684	3112	cmd.exe	82
PID 3112 wrote to memory of 3684	3112	cmd.exe	82
PID 3112 wrote to memory of 3684	3112	cmd.exe	82
PID 3424 wrote to memory of 2788	3424	important.exe	87
PID 3424 wrote to memory of 2788	3424	important.exe	87
PID 3424 wrote to memory of 2788	3424	important.exe	87
PID 3424 wrote to memory of 2504	3424	important.exe	88
PID 3424 wrote to memory of 2504	3424	important.exe	88
PID 3424 wrote to memory of 2504	3424	important.exe	88
PID 2504 wrote to memory of 2664	2504	cmd.exe	90
PID 2504 wrote to memory of 2664	2504	cmd.exe	90
PID 2504 wrote to memory of 2664	2504	cmd.exe	90
PID 2788 wrote to memory of 3852	2788	@[email protected]	93
PID 2788 wrote to memory of 3852	2788	@[email protected]	93
PID 2788 wrote to memory of 3852	2788	@[email protected]	93
PID 2664 wrote to memory of 188	2664	@[email protected]	95
PID 2664 wrote to memory of 188	2664	@[email protected]	95
PID 2664 wrote to memory of 188	2664	@[email protected]	95
PID 188 wrote to memory of 1216	188	cmd.exe	97
PID 188 wrote to memory of 1216	188	cmd.exe	97
PID 188 wrote to memory of 1216	188	cmd.exe	97
PID 188 wrote to memory of 2780	188	cmd.exe	99
PID 188 wrote to memory of 2780	188	cmd.exe	99
PID 188 wrote to memory of 2780	188	cmd.exe	99
PID 3424 wrote to memory of 428	3424	important.exe	101
PID 3424 wrote to memory of 428	3424	important.exe	101
PID 3424 wrote to memory of 428	3424	important.exe	101
PID 3424 wrote to memory of 1768	3424	important.exe	102
PID 3424 wrote to memory of 1768	3424	important.exe	102
PID 3424 wrote to memory of 1768	3424	important.exe	102
PID 3424 wrote to memory of 1608	3424	important.exe	103
PID 3424 wrote to memory of 1608	3424	important.exe	103
PID 3424 wrote to memory of 1608	3424	important.exe	103
PID 3424 wrote to memory of 1652	3424	important.exe	104
PID 3424 wrote to memory of 1652	3424	important.exe	104
PID 3424 wrote to memory of 1652	3424	important.exe	104
PID 1652 wrote to memory of 3820	1652	cmd.exe	106
PID 1652 wrote to memory of 3820	1652	cmd.exe	106
PID 1652 wrote to memory of 3820	1652	cmd.exe	106
PID 3424 wrote to memory of 216	3424	important.exe	107
PID 3424 wrote to memory of 216	3424	important.exe	107
PID 3424 wrote to memory of 216	3424	important.exe	107
PID 3424 wrote to memory of 2176	3424	important.exe	108
PID 3424 wrote to memory of 2176	3424	important.exe	108
PID 3424 wrote to memory of 2176	3424	important.exe	108
PID 3424 wrote to memory of 2740	3424	important.exe	109
PID 3424 wrote to memory of 2740	3424	important.exe	109
PID 3424 wrote to memory of 2740	3424	important.exe	109
PID 3424 wrote to memory of 2612	3424	important.exe	110
PID 3424 wrote to memory of 2612	3424	important.exe	110
PID 3424 wrote to memory of 2612	3424	important.exe	110
PID 3424 wrote to memory of 2496	3424	important.exe	111

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1380	attrib.exe

C:\Users\Admin\AppData\Local\Temp\important.exe
"C:\Users\Admin\AppData\Local\Temp\important.exe"
1⤵
- Modifies extensions of user files
- Drops startup file
- Sets desktop wallpaper using registry
- Suspicious use of WriteProcessMemory
PID:3424
- C:\Windows\SysWOW64\attrib.exe
  attrib +h .
  2⤵
  - Views/modifies file attributes
  PID:1380
- C:\Windows\SysWOW64\icacls.exe
  icacls . /grant Everyone:F /T /C /Q
  2⤵
  - Modifies file permissions
  PID:1460
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:1608
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c 107491624648387.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3112
- - C:\Windows\SysWOW64\cscript.exe
    cscript.exe //nologo m.vbs
    3⤵
    PID:3684
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected] co
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2788
- - C:\Users\Admin\AppData\Local\Temp\TaskData\Tor\taskhsvc.exe
    TaskData\Tor\taskhsvc.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    PID:3852
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c start /b @[email protected] vs
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2504
- - C:\Users\Admin\AppData\Local\Temp\@[email protected]
    @[email protected] vs
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2664
  - - 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:188
    - - C:\Windows\SysWOW64\vssadmin.exe
        
        vssadmin delete shadows /all /quiet
        5⤵
        Interacts with shadow copies
        
        PID:1216
    - - C:\Windows\SysWOW64\Wbem\WMIC.exe
        
        wmic shadowcopy delete
        5⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:2780
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:428
- C:\Users\Admin\AppData\Local\Temp\taskse.exe
  taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1768
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Executes dropped EXE
  - Sets desktop wallpaper using registry
  - Suspicious use of SetWindowsHookEx
  PID:1608
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "dfevzalm316" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1652
- - C:\Windows\SysWOW64\reg.exe
    reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "dfevzalm316" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f
    3⤵
    - Adds Run key to start application
    - Modifies registry key
    PID:3820
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:216
- C:\Users\Admin\AppData\Local\Temp\taskse.exe
  taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2176
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2740
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:2612
- C:\Users\Admin\AppData\Local\Temp\taskse.exe
  taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2496
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:3632
- C:\Users\Admin\AppData\Local\Temp\taskse.exe
  taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3740
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2780
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:184

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2644

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File Deletion

T1107

File and Directory Permissions Modification

T1222

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

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

memory/3424-116-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/3852-190-0x00000000738C0000-0x0000000073942000-memory.dmp

Filesize
520KB

Download
memory/3852-185-0x00000000738C0000-0x0000000073942000-memory.dmp

Filesize
520KB

Download
memory/3852-186-0x0000000073540000-0x000000007375C000-memory.dmp

Filesize
2.1MB

Download
memory/3852-187-0x0000000073760000-0x00000000737E2000-memory.dmp

Filesize
520KB

Download
memory/3852-188-0x0000000073870000-0x0000000073892000-memory.dmp

Filesize
136KB

Download
memory/3852-189-0x0000000001320000-0x000000000161E000-memory.dmp

Filesize
3.0MB

Download
memory/3852-193-0x0000000073870000-0x0000000073892000-memory.dmp

Filesize
136KB

Download
memory/3852-191-0x0000000073540000-0x000000007375C000-memory.dmp

Filesize
2.1MB

Download
memory/3852-192-0x0000000073760000-0x00000000737E2000-memory.dmp

Filesize
520KB

Download
memory/3852-194-0x0000000001320000-0x000000000161E000-memory.dmp

Filesize
3.0MB

Download