wannacry | e90064c67c230e4092bf422898be34e803854b3c8f779141f9704a21fbb49f59

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
25-07-2024 09:44

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General

Target

2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe
Size

5.0MB
MD5

01e57b1711f09b2f17ad147ba726df61
SHA1

6b5a2d391611a5e76b8964ef08faec459e7f3f2f
SHA256

e90064c67c230e4092bf422898be34e803854b3c8f779141f9704a21fbb49f59
SHA512

4e8d0e997df6b7a96de9be618ee03ccf7c7068e87832ef99a8091b56a7c34660ffce848a1d2ad4410c1a93e4e15a65c1a723596326abedd45139acc6640b011c
SSDEEP

49152:2nAJMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnv:yuPoBhz1aRxcSUDk36SAEdhv

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3351) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Executes dropped EXE 1 IoCs

Processes:

tasksche.exe

pid process

3896 tasksche.exe
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Drops file in Windows directory 1 IoCs

Processes:

2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe

description ioc process

File created C:\WINDOWS\tasksche.exe 2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

4492 3896 WerFault.exe tasksche.exe
4180 3896 WerFault.exe tasksche.exe

pid	process
3896	tasksche.exe

description	ioc	process
File created	C:\WINDOWS\tasksche.exe	2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe

pid	pid_target	process	target process
4492	3896	WerFault.exe	tasksche.exe
4180	3896	WerFault.exe	tasksche.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

tasksche.exe2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe

Modifies data under HKEY_USERS 5 IoCs

Processes:

2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe

description	pid	process	target process
PID 3096 wrote to memory of 3896	3096	2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe	tasksche.exe
PID 3096 wrote to memory of 3896	3096	2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe	tasksche.exe
PID 3096 wrote to memory of 3896	3096	2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe	tasksche.exe

C:\Users\Admin\AppData\Local\Temp\2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3096

C:\WINDOWS\tasksche.exe
C:\WINDOWS\tasksche.exe /i
2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3896 -s 220
3⤵
- Program crash
PID:4492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3896 -s 224
3⤵
- Program crash
PID:4180

C:\Users\Admin\AppData\Local\Temp\2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2024-07-25_01e57b1711f09b2f17ad147ba726df61_wannacry.exe -m security
1⤵
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3896 -ip 3896
1⤵
PID:2648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3896 -ip 3896
1⤵
PID:3464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\tasksche.exe

Filesize
3.4MB

MD5
208953ef07112cf7e101bfaa6e21a8c8

SHA1
ff703c9d9192ab5448e976096edb3ac61a2a7c1d

SHA256
c98400ed098d8b0e3c3b6d17a50bfbdd068d1728d8aa34df384e5e6e6ec2c1de

SHA512
b30bbe4c518226c818275a93156c1bc4ccf6dd17de6f326dca673f02c1d1ea282e29e335931968d61b724a179ef9671783fe01ff2fe382058619523e30e03340

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