wannacry | a32575ab0959baeec62fd4a7165667045ee10ba8e01b6ea883e4efc545dc65de

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
02/07/2026, 08:03

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General

Target
_a32575ab0959baeec62fd4a7165667045ee10ba8e01b6ea883e4efc545dc65de.dll
Size 5.0MB
Sample260702-jxs6caet61
SHA256 a32575ab0959baeec62fd4a7165667045ee10ba8e01b6ea883e4efc545dc65de
MD5 ccd5c8a0773f505c25b754b8863b58f9
SHA1 b2328a12714e7d26bf70a472a1d3a1b0361db9a9
SHA512 f0c948ee035b2dee32f9f2b8ff72bcd77bd3f4544ae457b4cbb3e1ef9f6c4ea4fb0e43b101522b79f8dd9d3f838ec98c7afd24e92a97522675cd92d35f7c6826
SSDEEP 12288:T1bLgmluCti62ybaIMu7L5NVErCA4z2g6rTcbckPU82900Ve7zw+K+D+dSNs5SQe:RbLgurihdmMSirYbcMNgef0pASk
TLSH
T14136239676AC41F8C1162230D0B74631F6B77CBE21BE9B0FDB908A612D13791BB64F46
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 (2186) 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
3488	mssecsvr.exe
1304	mssecsvr.exe

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

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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvr.exe
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

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4652 wrote to memory of 940	4652	rundll32.exe	84
PID 940 wrote to memory of 3488	940	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\_a32575ab0959baeec62fd4a7165667045ee10ba8e01b6ea883e4efc545dc65de.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4652
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\_a32575ab0959baeec62fd4a7165667045ee10ba8e01b6ea883e4efc545dc65de.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:940
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:3488

C:\WINDOWS\mssecsvr.exe
C:\WINDOWS\mssecsvr.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1304

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

Replay Monitor

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Downloads

mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 feb1e74e9e3b4ab2502fb571807d6fc4e1e3ec0846e3d11a376cab31407d6b92
MD5 417a29b861032ba130bfe2c53adfd2b3
SHA1 38dcf4bc5ee5b766bc7490dbf561e72d761cf880
SHA512 f3ed3571950c828529fe0a911a8c8eb36940936eabc660afd49f605345a2538c72286a8dc9216f59543f530a5eabe57be8eac393fea169a8e494add4839d7bfb
SSDEEP 12288:e1bLgmluCti62ybaIMu7L5NVErCA4z2g6rTcbckPU82900Ve7zw+K+D+dSNs5SQe:QbLgurihdmMSirYbcMNgef0pASk
TLSH
T1ADB5239676AC41F8C2162630D0B74631F6B77CBE21BE9B0FDB908A612D13790B764F46
MD5 SHA1 SHA512 SSDEEP TLSH

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