wannacry | fd0227874442b2f696579e751cd66b7e2f5eccecd3f7ed3b71db24011a82da01

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
27/10/2026, 04:15

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General

Target
fd0227874442b2f696579e751cd66b7e2f5eccecd3f7ed3b71db24011a82da01.dll
Size 5.0MB
Sample261027-et8peaav2v
SHA256 fd0227874442b2f696579e751cd66b7e2f5eccecd3f7ed3b71db24011a82da01
MD5 f3e4fab64a210614d0cb0c3697f074e5
SHA1 7c9f253b87dc7ee81914e4b7aad7197f4c27659b
SHA512 ba8ebacd621402dfffa16e78b2a5170a0eae8116943ebce52a0db0eb947e41fd62ea8711c3995574f19089860ca4573443544b962a7dcf3bfbcef4924551ca76
SSDEEP 49152:SnAQqMSPbcB3vxJM0H9PAMEcaEau3R8yAH1plA:+DqPoBfxWa9P593R8yAVp2
TLSH
T19C3633A4974CB1BCE06406709462093DEBBB3C65A739872F47D48B560E0379BAFE4F19
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 (3348) 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 3 IoCs

pid	Process
3540	mssecsvc.exe
5112	mssecsvc.exe
3356	tasksche.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\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.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	mssecsvc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	mssecsvc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	mssecsvc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	mssecsvc.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	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies data under HKEY_USERS 5 IoCs

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

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2012 wrote to memory of 5596	2012	rundll32.exe	89
PID 5596 wrote to memory of 3540	5596	rundll32.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\fd0227874442b2f696579e751cd66b7e2f5eccecd3f7ed3b71db24011a82da01.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2012
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\fd0227874442b2f696579e751cd66b7e2f5eccecd3f7ed3b71db24011a82da01.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5596
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.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:3540
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:3356

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.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:5112

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

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 7c060b2641819dd224581991907a586c89c2b4f353e6f514c698718146b67ba6
MD5 4eb1b71796227f3d1eaef8dadfc87d59
SHA1 c1c632aabb7c248cf3551f9a368185c40d24de40
SHA512 affb77f07c7d315e27f224541548b1473b020699a2f0125be21d8234c485af4d36ef3eaea775f98e66e77bdf21760748a9768ec9dbde58208a8a575b4993e644
SSDEEP 49152:2nAQqMSPbcB3vxJM0H9PAMEcaEau3R8yAH1plA:yDqPoBfxWa9P593R8yAVp2
TLSH
T1000633A4974CB1BCE06406709462093DEBBB3C65A739872F47D48B560E0379BAFE4F19
MD5 SHA1 SHA512 SSDEEP TLSH

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 031277fe3aa130bc3dd316e3c0065775922f9848f9b170ede2da02fb57246983
MD5 88a070b10a7cc6398184ef02a933ca09
SHA1 10f6ee81646b1066a969a461b452db66ac460717
SHA512 a217f81538980e16795803f186f676a65babe7ca6bf5f93c65acac6a2d3d764b68cf35e68e08b4fae61c3baea3bce692be5d84c3dc8659dd27cf869b413b8812
SSDEEP 49152:nQqMSPbcB3vxJM0H9PAMEcaEau3R8yAH1plA:QqPoBfxWa9P593R8yAVp2
TLSH
T12CF533F0C715B76CF2B40EB1945054AE2A4E2AB1F77A9B3ED1C406860C04BAF8FD599C
MD5 SHA1 SHA512 SSDEEP TLSH