wannacry | e2f7b283517921f35571c13d4164bab5be8ec0d345ba33b93a203ef886143555

Analysis

max time kernel
150s
max time network
152s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
27/10/2026, 03:19

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
e2f7b283517921f35571c13d4164bab5be8ec0d345ba33b93a203ef886143555.dll
Size 5.0MB
Sample261027-dvletsxz5l
SHA256 e2f7b283517921f35571c13d4164bab5be8ec0d345ba33b93a203ef886143555
MD5 9eaf2c8613e6278c78fba3740b0b220b
SHA1 a84955be2a97b17477bf687c341b77fd3934c975
SHA512 5c589e4e09566da8fdd0d432ed792920777c1eb501e4330888494f0197bc3c37c053b32ca6eca21ddd8fe34cbe925057bb16480606aefb69753f6bbd91f13abf
SSDEEP 49152:RnFQqMSPbcR+VQej/1INRx+TSqTdX1HkQo6SAr:1eqPochz1aRxcSUDk36SAr
TLSH
T1E536336A717CE1FCD105267844A7892796F33C9A66FE6E0F4F844A670D03B19BF90A43
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 (3364) 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
3284	mssecsvr.exe
4052	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 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\mssecsvr.exe	rundll32.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\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
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	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 260 wrote to memory of 4020	260	rundll32.exe	88
PID 4020 wrote to memory of 3284	4020	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\e2f7b283517921f35571c13d4164bab5be8ec0d345ba33b93a203ef886143555.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:260
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\e2f7b283517921f35571c13d4164bab5be8ec0d345ba33b93a203ef886143555.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4020
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.exe
    3⤵
    - Executes dropped EXE
    - Reads the TCP/IP host and domain name from the registry
    - System Location Discovery: System Language Discovery
    PID:3284

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:4052

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

Replay Monitor

Loading Replay Monitor...

Downloads

mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 2.2MB
SHA256 d3f6d260795fbf1a71fd8c579f1364c453639413dbae2a9ecc253ea337126b65
MD5 b1a8c584c55df87f427f235b4b3e3797
SHA1 b612ad52b168543993fa75d292cdb879e2f31684
SHA512 a3eeac152767d65146624c73d3b033f3f5e7f4b8da6f2d487727ed5c31859bfe6d2c94c3f4f9869200355a5d3b96425b593aac45218974a89eba5ad27fc12840
SSDEEP 49152:QnFQqMSPbcR+VQej/1INRx+TSqTdX1HkQo6SArn:QeqPochz1aRxcSUDk36SArn
TLSH
T19AB5336A717CE1BCD105267844A78927D6F33C9A66FE6E0F4F844A670D03B19BF90A43
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download