wannacry | e9c0e0db3ccd6dde06bc8e2b8810281f9919028cc8a797bf21b9bbcae64c7647

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
02/11/2026, 04:49

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General

Target
e9c0e0db3ccd6dde06bc8e2b8810281f9919028cc8a797bf21b9bbcae64c7647.dll
Size 5.0MB
Sample261102-ff7evszzd1
SHA256 e9c0e0db3ccd6dde06bc8e2b8810281f9919028cc8a797bf21b9bbcae64c7647
MD5 c2c4612c2138df47a52a526fbae3ab92
SHA1 3c646847b505e36f6883425085e82f76bd51234d
SHA512 1b4afc49b799e951398c152f61540a6f912724b7a2e6ef7f697fb7dff0e9329c7242fc6a7934139b521cc6047f1cfa0cfa308fd569567c6f44099f6b2f3b7d55
SSDEEP 49152:RntQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnv:12qPoBhz1aRxcSUDk36SAEdhv
TLSH
T126363399717CD2FCD10919B444ABCA53B3B23C6A16FE5E0F9F4089661D03B5AFB90A43
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 (3363) 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
5256	mssecsvr.exe
3432	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\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
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

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3988 wrote to memory of 6128	3988	rundll32.exe	84
PID 6128 wrote to memory of 5256	6128	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e9c0e0db3ccd6dde06bc8e2b8810281f9919028cc8a797bf21b9bbcae64c7647.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3988
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e9c0e0db3ccd6dde06bc8e2b8810281f9919028cc8a797bf21b9bbcae64c7647.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:6128
- - 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:5256

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:3432

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 2.2MB
SHA256 38e61dc680dfcf61a85f70cc4d8b7b29e9af116b3cdc49e6ecce70f4aa03ce3e
MD5 49aa2c7a27aa8f3173088827fa3fbfc3
SHA1 9baf397721e15ce426e4ee2e3ed9665f3d5dcc14
SHA512 c0f9489a83e36adef266079dc76d8a5b56c2803e6fdb6049cf5cec2c1ffc93547f47787e6ae9002714b3d3cb9f98e550cfefcc89024f5a57726318710930be7d
SSDEEP 49152:QntQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvn:Q2qPoBhz1aRxcSUDk36SAEdhvn
TLSH
T1DEB53399717CD2FCD10519B444ABCA53B3B23C6A16FE5E0F9B4089661D03F59FB90A43
MD5 SHA1 SHA512 SSDEEP TLSH

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