wannacry | 283f40e9d550833bec101a24fd6fd6fbd9937ed32a51392e818ffff662a1d30a

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13-02-2022 15:34

220213-sz5ftsbch7 10

13-02-2022 15:31

220213-syb3wsbcg4 10

13-02-2022 15:17

220213-sn7rtadbaq 10

Analysis

max time kernel
166s
max time network
141s
platform
windows7_x64
resource
win7-en-20211208
submitted
13-02-2022 15:31

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General

Target

[email protected]
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 10 IoCs

pid	Process
1940	taskdl.exe
780	taskdl.exe
304	taskdl.exe
1192	taskdl.exe
1732	@[email protected]
1620	@[email protected]
1768	taskse.exe
1924	@[email protected]
908	taskdl.exe
1120	taskhsvc.exe

Modifies extensions of user files 14 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File created	C:\Users\Admin\Pictures\DebugAssert.raw.WNCRYT	[email protected]
File renamed	C:\Users\Admin\Pictures\SubmitDisconnect.tiff.WNCRYT => C:\Users\Admin\Pictures\SubmitDisconnect.tiff.WNCRY	[email protected]
File opened for modification	C:\Users\Admin\Pictures\SubmitDisconnect.tiff.WNCRY	[email protected]
File renamed	C:\Users\Admin\Pictures\DebugAssert.raw.WNCRYT => C:\Users\Admin\Pictures\DebugAssert.raw.WNCRY	[email protected]
File opened for modification	C:\Users\Admin\Pictures\DebugAssert.raw.WNCRY	[email protected]
File created	C:\Users\Admin\Pictures\DisableLock.tiff.WNCRYT	[email protected]
File renamed	C:\Users\Admin\Pictures\DisableLock.tiff.WNCRYT => C:\Users\Admin\Pictures\DisableLock.tiff.WNCRY	[email protected]
File opened for modification	C:\Users\Admin\Pictures\SubmitDisconnect.tiff	[email protected]
File opened for modification	C:\Users\Admin\Pictures\DisableLock.tiff.WNCRY	[email protected]
File created	C:\Users\Admin\Pictures\ExitRequest.png.WNCRYT	[email protected]
File renamed	C:\Users\Admin\Pictures\ExitRequest.png.WNCRYT => C:\Users\Admin\Pictures\ExitRequest.png.WNCRY	[email protected]
File created	C:\Users\Admin\Pictures\SubmitDisconnect.tiff.WNCRYT	[email protected]
File opened for modification	C:\Users\Admin\Pictures\ExitRequest.png.WNCRY	[email protected]
File opened for modification	C:\Users\Admin\Pictures\DisableLock.tiff	[email protected]

Drops startup file 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SD9E31.tmp	[email protected]

Loads dropped DLL 24 IoCs

pid	Process
1640	[email protected]
1640	[email protected]
1640	[email protected]
1640	[email protected]
1912	cscript.exe
1640	[email protected]
1640	[email protected]
1640	[email protected]
1640	[email protected]
1640	[email protected]
1640	[email protected]
1720	cmd.exe
1720	cmd.exe
1640	[email protected]
1640	[email protected]
1640	[email protected]
1640	[email protected]
1640	[email protected]
1640	[email protected]
1732	@[email protected]
1732	@[email protected]
1120	taskhsvc.exe
1120	taskhsvc.exe
1120	taskhsvc.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
268	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 1 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]

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
1192	vssadmin.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
1680	reg.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
856	chrome.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeTcbPrivilege	1768	taskse.exe
Token: SeTcbPrivilege	1768	taskse.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1620	@[email protected]
1732	@[email protected]
1732	@[email protected]
1620	@[email protected]

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 1444	1640	[email protected]	27
PID 1640 wrote to memory of 1444	1640	[email protected]	27
PID 1640 wrote to memory of 1444	1640	[email protected]	27
PID 1640 wrote to memory of 1444	1640	[email protected]	27
PID 1640 wrote to memory of 268	1640	[email protected]	29
PID 1640 wrote to memory of 268	1640	[email protected]	29
PID 1640 wrote to memory of 268	1640	[email protected]	29
PID 1640 wrote to memory of 268	1640	[email protected]	29
PID 1640 wrote to memory of 1940	1640	[email protected]	31
PID 1640 wrote to memory of 1940	1640	[email protected]	31
PID 1640 wrote to memory of 1940	1640	[email protected]	31
PID 1640 wrote to memory of 1940	1640	[email protected]	31
PID 1640 wrote to memory of 1516	1640	[email protected]	32
PID 1640 wrote to memory of 1516	1640	[email protected]	32
PID 1640 wrote to memory of 1516	1640	[email protected]	32
PID 1640 wrote to memory of 1516	1640	[email protected]	32
PID 1516 wrote to memory of 1912	1516	cmd.exe	35
PID 1516 wrote to memory of 1912	1516	cmd.exe	35
PID 1516 wrote to memory of 1912	1516	cmd.exe	35
PID 1516 wrote to memory of 1912	1516	cmd.exe	35
PID 1640 wrote to memory of 780	1640	[email protected]	37
PID 1640 wrote to memory of 780	1640	[email protected]	37
PID 1640 wrote to memory of 780	1640	[email protected]	37
PID 1640 wrote to memory of 780	1640	[email protected]	37
PID 1640 wrote to memory of 304	1640	[email protected]	39
PID 1640 wrote to memory of 304	1640	[email protected]	39
PID 1640 wrote to memory of 304	1640	[email protected]	39
PID 1640 wrote to memory of 304	1640	[email protected]	39
PID 1640 wrote to memory of 1192	1640	[email protected]	40
PID 1640 wrote to memory of 1192	1640	[email protected]	40
PID 1640 wrote to memory of 1192	1640	[email protected]	40
PID 1640 wrote to memory of 1192	1640	[email protected]	40
PID 988 wrote to memory of 1372	988	chrome.exe	42
PID 988 wrote to memory of 1372	988	chrome.exe	42
PID 988 wrote to memory of 1372	988	chrome.exe	42
PID 1640 wrote to memory of 1732	1640	[email protected]	44
PID 1640 wrote to memory of 1732	1640	[email protected]	44
PID 1640 wrote to memory of 1732	1640	[email protected]	44
PID 1640 wrote to memory of 1732	1640	[email protected]	44
PID 1640 wrote to memory of 1720	1640	[email protected]	45
PID 1640 wrote to memory of 1720	1640	[email protected]	45
PID 1640 wrote to memory of 1720	1640	[email protected]	45
PID 1640 wrote to memory of 1720	1640	[email protected]	45
PID 1720 wrote to memory of 1620	1720	cmd.exe	47
PID 1720 wrote to memory of 1620	1720	cmd.exe	47
PID 1720 wrote to memory of 1620	1720	cmd.exe	47
PID 1720 wrote to memory of 1620	1720	cmd.exe	47
PID 1640 wrote to memory of 1768	1640	[email protected]	48
PID 1640 wrote to memory of 1768	1640	[email protected]	48
PID 1640 wrote to memory of 1768	1640	[email protected]	48
PID 1640 wrote to memory of 1768	1640	[email protected]	48
PID 1640 wrote to memory of 1924	1640	[email protected]	49
PID 1640 wrote to memory of 1924	1640	[email protected]	49
PID 1640 wrote to memory of 1924	1640	[email protected]	49
PID 1640 wrote to memory of 1924	1640	[email protected]	49
PID 1640 wrote to memory of 1992	1640	[email protected]	50
PID 1640 wrote to memory of 1992	1640	[email protected]	50
PID 1640 wrote to memory of 1992	1640	[email protected]	50
PID 1640 wrote to memory of 1992	1640	[email protected]	50
PID 1640 wrote to memory of 908	1640	[email protected]	52
PID 1640 wrote to memory of 908	1640	[email protected]	52
PID 1640 wrote to memory of 908	1640	[email protected]	52
PID 1640 wrote to memory of 908	1640	[email protected]	52
PID 1992 wrote to memory of 1680	1992	cmd.exe	53

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1444	attrib.exe

C:\Users\Admin\AppData\Local\Temp\[email protected]
"C:\Users\Admin\AppData\Local\Temp\[email protected]"
1⤵
- Modifies extensions of user files
- Drops startup file
- Loads dropped DLL
- Sets desktop wallpaper using registry
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Windows\SysWOW64\attrib.exe
  attrib +h .
  2⤵
  - Views/modifies file attributes
  PID:1444
- C:\Windows\SysWOW64\icacls.exe
  icacls . /grant Everyone:F /T /C /Q
  2⤵
  - Modifies file permissions
  PID:268
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:1940
- C:\Windows\SysWOW64\cmd.exe
  cmd /c 107491644769959.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1516
- - C:\Windows\SysWOW64\cscript.exe
    cscript.exe //nologo m.vbs
    3⤵
    - Loads dropped DLL
    PID:1912
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:780
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:304
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:1192
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected] co
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetWindowsHookEx
  PID:1732
- - C:\Users\Admin\AppData\Local\Temp\TaskData\Tor\taskhsvc.exe
    TaskData\Tor\taskhsvc.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:1120
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c start /b @[email protected] vs
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1720
- - C:\Users\Admin\AppData\Local\Temp\@[email protected]
    @[email protected] vs
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    PID:1620
  - - 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⤵
      PID:1664
    - - C:\Windows\SysWOW64\vssadmin.exe
        
        vssadmin delete shadows /all /quiet
        5⤵
        Interacts with shadow copies
        
        PID:1192
- 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
  PID:1924
- 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⤵
  - Suspicious use of WriteProcessMemory
  PID:1992
- - 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:1680
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:908

C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:988
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=89.0.4389.114 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef6e94f50,0x7fef6e94f60,0x7fef6e94f70
  2⤵
  PID:1372
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1188,16781793437537109683,17868335171437888188,131072 --lang=en-US --service-sandbox-type=network --mojo-platform-channel-handle=1256 /prefetch:8
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:856
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1188,16781793437537109683,17868335171437888188,131072 --gpu-preferences=SAAAAAAAAADgAAAwAAAAAAAAAAAAAAAAAABgAAAAAAAoAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB4AAAAAAAAAHgAAAAAAAAAKAAAAAQAAAAgAAAAAAAAACgAAAAAAAAAMAAAAAAAAAA4AAAAAAAAABAAAAAAAAAAAAAAAAUAAAAQAAAAAAAAAAAAAAAGAAAAEAAAAAAAAAABAAAABQAAABAAAAAAAAAAAQAAAAYAAAAIAAAAAAAAAAgAAAAAAAAA --mojo-platform-channel-handle=1192 /prefetch:2
  2⤵
  PID:1136
- C:\Program Files\Google\Chrome\Application\chrome.exe
  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=1188,16781793437537109683,17868335171437888188,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1664 /prefetch:8
  2⤵
  PID:1612

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/1640-55-0x0000000076B81000-0x0000000076B83000-memory.dmp

Filesize
8KB

Download
memory/1640-58-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download