wannacry | ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa

Analysis

max time kernel
87s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
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 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: 13AM4VW2dhxYgXeQepoHkHSQuy6NgaEb94 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

13AM4VW2dhxYgXeQepoHkHSQuy6NgaEb94

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry

Executes dropped EXE 6 IoCs

pid	Process
2704	taskdl.exe
2276	taskdl.exe
3304	taskdl.exe
1328	@[email protected]
1272	@[email protected]
2240	taskhsvc.exe

Modifies extensions of user files 12 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\ResumeSend.png.WNCRYT => C:\Users\Admin\Pictures\ResumeSend.png.WNCRY	wannacry.exe
File renamed	C:\Users\Admin\Pictures\RestoreSelect.png.WNCRYT => C:\Users\Admin\Pictures\RestoreSelect.png.WNCRY	wannacry.exe
File opened for modification	C:\Users\Admin\Pictures\RestoreSelect.png.WNCRY	wannacry.exe
File opened for modification	C:\Users\Admin\Pictures\CheckpointSend.png.WNCRY	wannacry.exe
File created	C:\Users\Admin\Pictures\RestoreSelect.png.WNCRYT	wannacry.exe
File created	C:\Users\Admin\Pictures\ResumeSend.png.WNCRYT	wannacry.exe
File opened for modification	C:\Users\Admin\Pictures\ResumeSend.png.WNCRY	wannacry.exe
File created	C:\Users\Admin\Pictures\UnprotectInvoke.raw.WNCRYT	wannacry.exe
File renamed	C:\Users\Admin\Pictures\UnprotectInvoke.raw.WNCRYT => C:\Users\Admin\Pictures\UnprotectInvoke.raw.WNCRY	wannacry.exe
File created	C:\Users\Admin\Pictures\CheckpointSend.png.WNCRYT	wannacry.exe
File renamed	C:\Users\Admin\Pictures\CheckpointSend.png.WNCRYT => C:\Users\Admin\Pictures\CheckpointSend.png.WNCRY	wannacry.exe
File opened for modification	C:\Users\Admin\Pictures\UnprotectInvoke.raw.WNCRY	wannacry.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\~SDEAD6.tmp	wannacry.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\~SDEA81.tmp	wannacry.exe

Loads dropped DLL 9 IoCs

pid	Process
2240	taskhsvc.exe
2240	taskhsvc.exe
2240	taskhsvc.exe
2240	taskhsvc.exe
2240	taskhsvc.exe
2240	taskhsvc.exe
2240	taskhsvc.exe
2240	taskhsvc.exe
2240	taskhsvc.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3612	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

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\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

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1328	@[email protected]
1272	@[email protected]
1328	@[email protected]
1272	@[email protected]

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2448 wrote to memory of 2976	2448	wannacry.exe	52
PID 2448 wrote to memory of 2976	2448	wannacry.exe	52
PID 2448 wrote to memory of 2976	2448	wannacry.exe	52
PID 2448 wrote to memory of 3612	2448	wannacry.exe	53
PID 2448 wrote to memory of 3612	2448	wannacry.exe	53
PID 2448 wrote to memory of 3612	2448	wannacry.exe	53
PID 2448 wrote to memory of 2704	2448	wannacry.exe	57
PID 2448 wrote to memory of 2704	2448	wannacry.exe	57
PID 2448 wrote to memory of 2704	2448	wannacry.exe	57
PID 2448 wrote to memory of 3480	2448	wannacry.exe	58
PID 2448 wrote to memory of 3480	2448	wannacry.exe	58
PID 2448 wrote to memory of 3480	2448	wannacry.exe	58
PID 3480 wrote to memory of 1892	3480	cmd.exe	60
PID 3480 wrote to memory of 1892	3480	cmd.exe	60
PID 3480 wrote to memory of 1892	3480	cmd.exe	60
PID 2448 wrote to memory of 2276	2448	wannacry.exe	72
PID 2448 wrote to memory of 2276	2448	wannacry.exe	72
PID 2448 wrote to memory of 2276	2448	wannacry.exe	72
PID 2448 wrote to memory of 3304	2448	wannacry.exe	73
PID 2448 wrote to memory of 3304	2448	wannacry.exe	73
PID 2448 wrote to memory of 3304	2448	wannacry.exe	73
PID 2448 wrote to memory of 1328	2448	wannacry.exe	74
PID 2448 wrote to memory of 1328	2448	wannacry.exe	74
PID 2448 wrote to memory of 1328	2448	wannacry.exe	74
PID 2448 wrote to memory of 2112	2448	wannacry.exe	75
PID 2448 wrote to memory of 2112	2448	wannacry.exe	75
PID 2448 wrote to memory of 2112	2448	wannacry.exe	75
PID 2112 wrote to memory of 1272	2112	cmd.exe	77
PID 2112 wrote to memory of 1272	2112	cmd.exe	77
PID 2112 wrote to memory of 1272	2112	cmd.exe	77
PID 1328 wrote to memory of 2240	1328	@[email protected]	78
PID 1328 wrote to memory of 2240	1328	@[email protected]	78
PID 1328 wrote to memory of 2240	1328	@[email protected]	78

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
2976	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
- Sets desktop wallpaper using registry
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Windows\SysWOW64\attrib.exe
  attrib +h .
  2⤵
  - Views/modifies file attributes
  PID:2976
- C:\Windows\SysWOW64\icacls.exe
  icacls . /grant Everyone:F /T /C /Q
  2⤵
  - Modifies file permissions
  PID:3612
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:2704
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c 281091642674996.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3480
- - C:\Windows\SysWOW64\cscript.exe
    cscript.exe //nologo m.vbs
    3⤵
    PID:1892
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:2276
- C:\Users\Admin\AppData\Local\Temp\taskdl.exe
  taskdl.exe
  2⤵
  - Executes dropped EXE
  PID:3304
- C:\Users\Admin\AppData\Local\Temp\@[email protected]
  @[email protected] co
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1328
- - C:\Users\Admin\AppData\Local\Temp\TaskData\Tor\taskhsvc.exe
    TaskData\Tor\taskhsvc.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:2240
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c start /b @[email protected] vs
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2112
- - C:\Users\Admin\AppData\Local\Temp\@[email protected]
    @[email protected] vs
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    PID:1272

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

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

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Downloads

memory/2448-130-0x0000000010000000-0x0000000010010000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads