wannacry | f954ade453fea64a20295964c1dc7b81afa7c0ff6f2fcc7595dab2d5c2a5f76b

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
07/11/2026, 10:25

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General

Target
f954ade453fea64a20295964c1dc7b81afa7c0ff6f2fcc7595dab2d5c2a5f76b.dll
Size 5.0MB
Sample261107-mf7h7act6n
SHA256 f954ade453fea64a20295964c1dc7b81afa7c0ff6f2fcc7595dab2d5c2a5f76b
MD5 92f34a89ab442db1fee10165fd32f82e
SHA1 a6ee4d42f3fedd74bf3dfdebdcc92b6e4e58cf89
SHA512 8b440e61972bfa2fa9bf97646844d797f5f0cb6e77ff488171482e42e8dcaf0ba68ae8e560faa19f46ec5cfd43e9dcf510dbcac39fc464fd77ec1fe15a6d7fe8
SSDEEP 98304:T8qPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2H:T8qPe1Cxcxk3ZAEUadzR8yc4H
TLSH
T189363394622CB2FCF0440EB44463896BB7B73C6967BA5E1F8BC086660D53B5BAFD0641
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 (3372) 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
3216	mssecsvc.exe
2648	mssecsvc.exe
4172	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 2 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	mssecsvc.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3004 wrote to memory of 5248	3004	rundll32.exe	89
PID 5248 wrote to memory of 3216	5248	rundll32.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f954ade453fea64a20295964c1dc7b81afa7c0ff6f2fcc7595dab2d5c2a5f76b.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3004
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f954ade453fea64a20295964c1dc7b81afa7c0ff6f2fcc7595dab2d5c2a5f76b.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5248
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:3216
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:4172

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
PID:2648

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 9119e1d88d24fd4638820b32ec844ec651490e7c9de8c9ee65f79dda7103d58c
MD5 bffb042c3b9927af05811e0399244c29
SHA1 653c3e2bab108324fc76d7fbbd2775994acdbb24
SHA512 80f9236dc0bae184e6bffa877248ddbc8297af44eff61401413ba4e18954b71c6a94cfff55e42049222e0748257045e34676c1e26ab7f11dad86454002845d74
SSDEEP 98304:X8qPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2Hj:X8qPe1Cxcxk3ZAEUadzR8yc4Hj
TLSH
T185063394612CB2FCF0440EB44473896AB7B73C69A7BA5E1F8BC086670D53B5BAFD0641
MD5 SHA1 SHA512 SSDEEP TLSH

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 2584e1521065e45ec3c17767c065429038fc6291c091097ea8b22c8a502c41dd
MD5 7f7ccaa16fb15eb1c7399d422f8363e8
SHA1 bd44d0ab543bf814d93b719c24e90d8dd7111234
SHA512 83e334b80de08903cfa9891a3fa349c1ece7e19f8e62b74a017512fa9a7989a0fd31929bf1fc13847bee04f2da3dacf6bc3f5ee58f0e4b9d495f4b9af12ed2b7
SSDEEP 98304:QqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2Hj:QqPe1Cxcxk3ZAEUadzR8yc4Hj
TLSH
T124F533E4A131B7ACF2950EF90566C59B368724B5BBEB1F2AD6C041AB1C44E6F8FC0581
MD5 SHA1 SHA512 SSDEEP TLSH