wannacry | 311c4aa2e6111e674c62f62ed42293e85513f9e39651e796b4d9bf733933765e

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20250410-en
resource tags

arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2025, 02:58

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General

Target

2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe
Size

3.6MB
MD5

7db6fa65a176d7da98abefaba7b4446a
SHA1

f3be94fd4c61b5ecc9a960f8402ea554d1847f8f
SHA256

311c4aa2e6111e674c62f62ed42293e85513f9e39651e796b4d9bf733933765e
SHA512

0908ea77d7e076fa54ce1b84ef75bf649a0d218c84a8781fc1231729cc21f699397230d3243f9d9b9777dc120427050c665700f6743e7729df9d4ec38849b2ac
SSDEEP

6144:GE9l9yUqIYVTH5DgSg8ajldktM0XXrP2GSf06CKZrGMYWXr51VZqvNAOis4it:GvbLgPlu+GSfiKZqMjCNfn

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Wannacry family
wannacry
Contacts a large (3314) 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

pid	Process
4268	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

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4696	4268	WerFault.exe	87
3232	4268	WerFault.exe	87

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4128 wrote to memory of 4268	4128	2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe	87
PID 4128 wrote to memory of 4268	4128	2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe	87
PID 4128 wrote to memory of 4268	4128	2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe	87

C:\Users\Admin\AppData\Local\Temp\2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4128
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4268
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4268 -s 220
    3⤵
    - Program crash
    PID:4696
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4268 -s 264
    3⤵
    - Program crash
    PID:3232

C:\Users\Admin\AppData\Local\Temp\2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-04-19_7db6fa65a176d7da98abefaba7b4446a_elex_wannacry.exe -m security
1⤵
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4268 -ip 4268
1⤵
PID:4484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4268 -ip 4268
1⤵
PID:5288

Network

MITRE ATT&CK Enterprise v16

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
778940b9891cf13586682d43a63bc3dd

SHA1
71d7cc0feb23b602e848a1e0c2c2dec784e64745

SHA256
bc08583991cbb4ae7ee1a02b572d20ddf589e5137851a0db6b9902c2a465db78

SHA512
d7c0088c8743dc63f01c9d8939645575e7863d96962b41bca3e8c1f05d485cd124eef858e3b6d30255d4ffdac17258bf1c09d5657722dcf832bf5153d588c7cb

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