wannacry | 542d5b2147a50754a3b0a4aa7c60128e7eba50f84dda4d360567c43836544d4a

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05-01-2025 10:28

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General

Target

2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Size

5.0MB
MD5

8a94b28ad9ee5e216808734cea5d4b39
SHA1

4414112b27c761e79960d657cce37c3e326d0277
SHA256

542d5b2147a50754a3b0a4aa7c60128e7eba50f84dda4d360567c43836544d4a
SHA512

12801576dd18fbe49853a25c949d18bad472c8b39d65ce56350f78ef63c96a19ed6590d8eb8dfa9acb721ccb7d0fa263ad61ccbf660c69a5a5665f58bfe4fc30
SSDEEP

49152:QnpEjbcBVQej31sNRx+TSqTdX1HkQo6SAA:QpUoBhT1+RxcSUDk36SA

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 (2160) 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
4960	tasksche.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\WINDOWS\tasksche.exe	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240668593	tasksche.exe
File created	C:\Windows\eee.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tasksche.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 524 wrote to memory of 4960	524	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe	102
PID 524 wrote to memory of 4960	524	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe	102
PID 524 wrote to memory of 4960	524	2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:524
- C:\WINDOWS\tasksche.exe
  C:\WINDOWS\tasksche.exe /i
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  PID:4960

C:\Users\Admin\AppData\Local\Temp\2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe
C:\Users\Admin\AppData\Local\Temp\2025-01-05_8a94b28ad9ee5e216808734cea5d4b39_wannacry.exe -m security
1⤵
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:5092

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

Replay Monitor

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Downloads

C:\Windows\tasksche.exe

Filesize
2.0MB

MD5
41d0a9857e22a22a7085cc6914032cc7

SHA1
30ab9042489bb204a226d1b907ef2ad252958606

SHA256
a56939989618754ab267e088a900f3824ba7c01a38a975479ac577a11f878edd

SHA512
d175aa6a0c3f5a08e0be33aabe359c3e212c5ff03045c50eb40f7e591b08c9fec634eb2c9bde2ec597879f36f643f70478c01d4eed35629275ae36670eea2aa0

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