wannacry | ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa

Analysis

max time kernel
144s
max time network
127s
platform
windows7_x64
resource
win7-en-20211208
submitted
20-01-2022 10:36

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General

Target

wannacry.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
2044	taskdl.exe
980	@[email protected]
768	@[email protected]
1380	taskhsvc.exe
1684	taskdl.exe
1188	taskse.exe
624	@[email protected]
1840	taskdl.exe
472	taskse.exe
876	@[email protected]
1612	taskdl.exe
1144	taskse.exe
1220	@[email protected]
804	taskdl.exe
668	taskse.exe
592	@[email protected]

Modifies extensions of user files 13 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\PingEnter.tiff.WNCRY	wannacry.exe
File opened for modification	C:\Users\Admin\Pictures\ShowReceive.tif.WNCRY	wannacry.exe
File opened for modification	C:\Users\Admin\Pictures\PingEnter.tiff	wannacry.exe
File created	C:\Users\Admin\Pictures\DebugCompress.png.WNCRYT	wannacry.exe
File opened for modification	C:\Users\Admin\Pictures\DebugCompress.png.WNCRY	wannacry.exe
File created	C:\Users\Admin\Pictures\NewMount.raw.WNCRYT	wannacry.exe
File opened for modification	C:\Users\Admin\Pictures\NewMount.raw.WNCRY	wannacry.exe
File renamed	C:\Users\Admin\Pictures\PingEnter.tiff.WNCRYT => C:\Users\Admin\Pictures\PingEnter.tiff.WNCRY	wannacry.exe
File renamed	C:\Users\Admin\Pictures\DebugCompress.png.WNCRYT => C:\Users\Admin\Pictures\DebugCompress.png.WNCRY	wannacry.exe
File renamed	C:\Users\Admin\Pictures\NewMount.raw.WNCRYT => C:\Users\Admin\Pictures\NewMount.raw.WNCRY	wannacry.exe
File created	C:\Users\Admin\Pictures\PingEnter.tiff.WNCRYT	wannacry.exe
File created	C:\Users\Admin\Pictures\ShowReceive.tif.WNCRYT	wannacry.exe
File renamed	C:\Users\Admin\Pictures\ShowReceive.tif.WNCRYT => C:\Users\Admin\Pictures\ShowReceive.tif.WNCRY	wannacry.exe

Drops startup file 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SDEBC4.tmp	wannacry.exe

Loads dropped DLL 39 IoCs

pid	Process
864	wannacry.exe
864	wannacry.exe
1688	cscript.exe
864	wannacry.exe
864	wannacry.exe
1108	cmd.exe
1108	cmd.exe
980	@[email protected]
980	@[email protected]
1380	taskhsvc.exe
1380	taskhsvc.exe
1380	taskhsvc.exe
1380	taskhsvc.exe
1380	taskhsvc.exe
1380	taskhsvc.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe
864	wannacry.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
368	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\pzzqswtbknfqf407 = "\"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-1-5-21-2329389628-4064185017-3901522362-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\@[email protected]"	@[email protected]
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\Desktop\\@[email protected]"	wannacry.exe

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
1084	vssadmin.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
1800	reg.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1380	taskhsvc.exe
1380	taskhsvc.exe
1380	taskhsvc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
624	@[email protected]

Suspicious use of AdjustPrivilegeToken 51 IoCs

description	pid	Process
Token: SeBackupPrivilege	1744	vssvc.exe
Token: SeRestorePrivilege	1744	vssvc.exe
Token: SeAuditPrivilege	1744	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1388	WMIC.exe
Token: SeSecurityPrivilege	1388	WMIC.exe
Token: SeTakeOwnershipPrivilege	1388	WMIC.exe
Token: SeLoadDriverPrivilege	1388	WMIC.exe
Token: SeSystemProfilePrivilege	1388	WMIC.exe
Token: SeSystemtimePrivilege	1388	WMIC.exe
Token: SeProfSingleProcessPrivilege	1388	WMIC.exe
Token: SeIncBasePriorityPrivilege	1388	WMIC.exe
Token: SeCreatePagefilePrivilege	1388	WMIC.exe
Token: SeBackupPrivilege	1388	WMIC.exe
Token: SeRestorePrivilege	1388	WMIC.exe
Token: SeShutdownPrivilege	1388	WMIC.exe
Token: SeDebugPrivilege	1388	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1388	WMIC.exe
Token: SeRemoteShutdownPrivilege	1388	WMIC.exe
Token: SeUndockPrivilege	1388	WMIC.exe
Token: SeManageVolumePrivilege	1388	WMIC.exe
Token: 33	1388	WMIC.exe
Token: 34	1388	WMIC.exe
Token: 35	1388	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1388	WMIC.exe
Token: SeSecurityPrivilege	1388	WMIC.exe
Token: SeTakeOwnershipPrivilege	1388	WMIC.exe
Token: SeLoadDriverPrivilege	1388	WMIC.exe
Token: SeSystemProfilePrivilege	1388	WMIC.exe
Token: SeSystemtimePrivilege	1388	WMIC.exe
Token: SeProfSingleProcessPrivilege	1388	WMIC.exe
Token: SeIncBasePriorityPrivilege	1388	WMIC.exe
Token: SeCreatePagefilePrivilege	1388	WMIC.exe
Token: SeBackupPrivilege	1388	WMIC.exe
Token: SeRestorePrivilege	1388	WMIC.exe
Token: SeShutdownPrivilege	1388	WMIC.exe
Token: SeDebugPrivilege	1388	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1388	WMIC.exe
Token: SeRemoteShutdownPrivilege	1388	WMIC.exe
Token: SeUndockPrivilege	1388	WMIC.exe
Token: SeManageVolumePrivilege	1388	WMIC.exe
Token: 33	1388	WMIC.exe
Token: 34	1388	WMIC.exe
Token: 35	1388	WMIC.exe
Token: SeTcbPrivilege	1188	taskse.exe
Token: SeTcbPrivilege	1188	taskse.exe
Token: SeTcbPrivilege	472	taskse.exe
Token: SeTcbPrivilege	472	taskse.exe
Token: SeTcbPrivilege	1144	taskse.exe
Token: SeTcbPrivilege	1144	taskse.exe
Token: SeTcbPrivilege	668	taskse.exe
Token: SeTcbPrivilege	668	taskse.exe

Suspicious use of SetWindowsHookEx 9 IoCs

pid	Process
768	@[email protected]
980	@[email protected]
768	@[email protected]
980	@[email protected]
624	@[email protected]
624	@[email protected]
876	@[email protected]
1220	@[email protected]
592	@[email protected]

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 864 wrote to memory of 1108	864	wannacry.exe	27
PID 864 wrote to memory of 1108	864	wannacry.exe	27
PID 864 wrote to memory of 1108	864	wannacry.exe	27
PID 864 wrote to memory of 1108	864	wannacry.exe	27
PID 864 wrote to memory of 368	864	wannacry.exe	29
PID 864 wrote to memory of 368	864	wannacry.exe	29
PID 864 wrote to memory of 368	864	wannacry.exe	29
PID 864 wrote to memory of 368	864	wannacry.exe	29
PID 864 wrote to memory of 2044	864	wannacry.exe	31
PID 864 wrote to memory of 2044	864	wannacry.exe	31
PID 864 wrote to memory of 2044	864	wannacry.exe	31
PID 864 wrote to memory of 2044	864	wannacry.exe	31
PID 864 wrote to memory of 1596	864	wannacry.exe	32
PID 864 wrote to memory of 1596	864	wannacry.exe	32
PID 864 wrote to memory of 1596	864	wannacry.exe	32
PID 864 wrote to memory of 1596	864	wannacry.exe	32
PID 1596 wrote to memory of 1688	1596	cmd.exe	34
PID 1596 wrote to memory of 1688	1596	cmd.exe	34
PID 1596 wrote to memory of 1688	1596	cmd.exe	34
PID 1596 wrote to memory of 1688	1596	cmd.exe	34
PID 864 wrote to memory of 980	864	wannacry.exe	37
PID 864 wrote to memory of 980	864	wannacry.exe	37
PID 864 wrote to memory of 980	864	wannacry.exe	37
PID 864 wrote to memory of 980	864	wannacry.exe	37
PID 864 wrote to memory of 1108	864	wannacry.exe	38
PID 864 wrote to memory of 1108	864	wannacry.exe	38
PID 864 wrote to memory of 1108	864	wannacry.exe	38
PID 864 wrote to memory of 1108	864	wannacry.exe	38
PID 1108 wrote to memory of 768	1108	cmd.exe	40
PID 1108 wrote to memory of 768	1108	cmd.exe	40
PID 1108 wrote to memory of 768	1108	cmd.exe	40
PID 1108 wrote to memory of 768	1108	cmd.exe	40
PID 980 wrote to memory of 1380	980	@[email protected]	41
PID 980 wrote to memory of 1380	980	@[email protected]	41
PID 980 wrote to memory of 1380	980	@[email protected]	41
PID 980 wrote to memory of 1380	980	@[email protected]	41
PID 768 wrote to memory of 1628	768	@[email protected]	43
PID 768 wrote to memory of 1628	768	@[email protected]	43
PID 768 wrote to memory of 1628	768	@[email protected]	43
PID 768 wrote to memory of 1628	768	@[email protected]	43
PID 1628 wrote to memory of 1084	1628	cmd.exe	45
PID 1628 wrote to memory of 1084	1628	cmd.exe	45
PID 1628 wrote to memory of 1084	1628	cmd.exe	45
PID 1628 wrote to memory of 1084	1628	cmd.exe	45
PID 1628 wrote to memory of 1388	1628	cmd.exe	47
PID 1628 wrote to memory of 1388	1628	cmd.exe	47
PID 1628 wrote to memory of 1388	1628	cmd.exe	47
PID 1628 wrote to memory of 1388	1628	cmd.exe	47
PID 864 wrote to memory of 1684	864	wannacry.exe	49
PID 864 wrote to memory of 1684	864	wannacry.exe	49
PID 864 wrote to memory of 1684	864	wannacry.exe	49
PID 864 wrote to memory of 1684	864	wannacry.exe	49
PID 864 wrote to memory of 1188	864	wannacry.exe	50
PID 864 wrote to memory of 1188	864	wannacry.exe	50
PID 864 wrote to memory of 1188	864	wannacry.exe	50
PID 864 wrote to memory of 1188	864	wannacry.exe	50
PID 864 wrote to memory of 624	864	wannacry.exe	51
PID 864 wrote to memory of 624	864	wannacry.exe	51
PID 864 wrote to memory of 624	864	wannacry.exe	51
PID 864 wrote to memory of 624	864	wannacry.exe	51
PID 864 wrote to memory of 1644	864	wannacry.exe	52
PID 864 wrote to memory of 1644	864	wannacry.exe	52
PID 864 wrote to memory of 1644	864	wannacry.exe	52
PID 864 wrote to memory of 1644	864	wannacry.exe	52

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1108	attrib.exe

C:\Users\Admin\AppData\Local\Temp\wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\wannacry.exe"
1⤵
- Modifies extensions of user files
- Drops startup file
- Loads dropped DLL
- Sets desktop wallpaper using registry
- Suspicious use of WriteProcessMemory
PID:864
- C:\Windows\SysWOW64\attrib.exe
  attrib +h .
  2⤵
  - Views/modifies file attributes
  PID:1108
- C:\Windows\SysWOW64\icacls.exe
  icacls . /grant Everyone:F /T /C /Q
  2⤵
  - Modifies file permissions
  PID:368
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:2044
- C:\Windows\SysWOW64\cmd.exe
  cmd /c 113691642678588.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1596
- - C:\Windows\SysWOW64\cscript.exe
    cscript.exe //nologo m.vbs
    3⤵
    - Loads dropped DLL
    PID:1688
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected] co
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:980
- - 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:1380
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c start /b @[email protected] vs
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1108
- - C:\Users\Admin\AppData\Local\Temp\@[email protected]
    @[email protected] vs
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:768
  - - 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:1628
    - - C:\Windows\SysWOW64\vssadmin.exe
        
        vssadmin delete shadows /all /quiet
        5⤵
        Interacts with shadow copies
        
        PID:1084
    - - C:\Windows\SysWOW64\Wbem\WMIC.exe
        
        wmic shadowcopy delete
        5⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:1388
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:1684
- 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:1188
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Executes dropped EXE
  - Sets desktop wallpaper using registry
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:624
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "pzzqswtbknfqf407" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f
  2⤵
  PID:1644
- - C:\Windows\SysWOW64\reg.exe
    reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "pzzqswtbknfqf407" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f
    3⤵
    - Adds Run key to start application
    - Modifies registry key
    PID:1800
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:1840
- 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:472
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:876
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:1612
- 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:1144
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:1220
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:804
- 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:668
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected]
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:592

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1744

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/864-57-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download
memory/864-54-0x0000000075421000-0x0000000075423000-memory.dmp

Filesize
8KB

Download
memory/1380-127-0x0000000073FD0000-0x0000000074052000-memory.dmp

Filesize
520KB

Download
memory/1380-128-0x0000000073D30000-0x0000000073F4C000-memory.dmp

Filesize
2.1MB

Download
memory/1380-130-0x0000000073C70000-0x0000000073C92000-memory.dmp

Filesize
136KB

Download
memory/1380-129-0x0000000073CA0000-0x0000000073D22000-memory.dmp

Filesize
520KB

Download
memory/1380-131-0x0000000000220000-0x000000000051E000-memory.dmp

Filesize
3.0MB

Download
memory/1380-134-0x0000000073CA0000-0x0000000073D22000-memory.dmp

Filesize
520KB

Download
memory/1380-135-0x0000000073C70000-0x0000000073C92000-memory.dmp

Filesize
136KB

Download
memory/1380-133-0x0000000073D30000-0x0000000073F4C000-memory.dmp

Filesize
2.1MB

Download
memory/1380-132-0x0000000073FD0000-0x0000000074052000-memory.dmp

Filesize
520KB

Download
memory/1380-136-0x0000000000220000-0x000000000051E000-memory.dmp

Filesize
3.0MB

Download