wannacry | ec64f5d5ca51fa22055c9b313c4e94c376065f4bea0f27f15adc4c0f3678de10

Analysis

max time kernel
150s
max time network
153s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
02/10/2026, 05:53

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General

Target
ec64f5d5ca51fa22055c9b313c4e94c376065f4bea0f27f15adc4c0f3678de10.dll
Size 5.0MB
Sample261002-gldkeazz2n
SHA256 ec64f5d5ca51fa22055c9b313c4e94c376065f4bea0f27f15adc4c0f3678de10
MD5 711a166b88ac297cc530b8140119841d
SHA1 f69522943dffe86f45f69af072e626a8dda42bd4
SHA512 d9ec21f6c8341537d5bd110862039ed2fda3d1cf6c0f1859f11d806bb94fddb337b8540a60dfe87cb9bccfa9465c27eb8de4f04b3d5878b651c80c061bea2cdd
SSDEEP 49152:unsEMSPbcBVQejJAARdhnv9AMEcaEau3R8yAH1plAH:afPoBh1AEdhv9593R8yAVp2H
TLSH
T1FF363380656C61F8E0980BF4A4734A69B3B77C6C61BB4F5FE7C083651C43BC3AB98A55
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery wannacry ransomware worm

Malware Config

Signatures

Family: Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3334) 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 2 IoCs

pid	Process
4632	mssecsvr.exe
2160	mssecsvr.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 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	mssecsvr.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	mssecsvr.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	mssecsvr.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	mssecsvr.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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvr.exe

Modifies data under HKEY_USERS 5 IoCs

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

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 5176 wrote to memory of 968	5176	rundll32.exe	89
PID 968 wrote to memory of 4632	968	rundll32.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ec64f5d5ca51fa22055c9b313c4e94c376065f4bea0f27f15adc4c0f3678de10.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5176
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ec64f5d5ca51fa22055c9b313c4e94c376065f4bea0f27f15adc4c0f3678de10.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:968
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - Reads the TCP/IP host and domain name from the registry
    - System Location Discovery: System Language Discovery
    PID:4632

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:2160

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

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 3.6MB
SHA256 485386773fe0595f0bb17c52bf29ab3265d5c38b37a89234470e604e1192dd60
MD5 95d796ea3c6168d4ad5ec1996a5e7295
SHA1 3e4d432ad306250bb63791239a228e5313d31870
SHA512 a33aab224769460a83a7554506448e06178a00a442364d8b763401593dece4e47a52bdbc994ef81219ca7b7487a8ac4353bc274824e213acb4619b0154733525
SSDEEP 49152:tnsEMSPbcBVQejJAARdhnv9AMEcaEau3R8yAH1plAHI:hfPoBh1AEdhv9593R8yAVp2HI
TLSH
T158063380656C61F8E0980BF4A4734A69B3B77C6C61BB4F5FE7C0C3651C43BC2AB98A55
MD5 SHA1 SHA512 SSDEEP TLSH

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