wannacry | a2d268d2f8540160ed05177f76fcf3b903928aa2bac193ca991c410eb908193f

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
10/11/2026, 19:10

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General

Target
a2d268d2f8540160ed05177f76fcf3b903928aa2bac193ca991c410eb908193f.dll
Size 5.0MB
Sample261110-xvertsab72
SHA256 a2d268d2f8540160ed05177f76fcf3b903928aa2bac193ca991c410eb908193f
MD5 2525d0e551b7513f13a92539892b60ac
SHA1 cdb6de351eb316e7b458901fdb2b52d3e6423976
SHA512 a8c9bd6a0c69b4b402dc3bd719e3260b93e9b0353ff1319ddb94e9bf5e47b36d131104a1f6527aa9a1ae21a4d24c61f9432db3d53c210a89d79b722a308409f5
SSDEEP 24576:SbLgddQhfdmMSirYbcMNgef0QeQjGQQYmPbIN:SnAQqMSPbcBVQejZYcMN
TLSH
T1EC36CF15BBD8D0A5D0B852318EA78AAD2333FC455E51870FB254FF2E2DB23589F61E90
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 (3362) 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
4396	mssecsvc.exe
4912	mssecsvc.exe
5460	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\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
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	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvc.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 3712 wrote to memory of 2552	3712	rundll32.exe	89
PID 2552 wrote to memory of 4396	2552	rundll32.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a2d268d2f8540160ed05177f76fcf3b903928aa2bac193ca991c410eb908193f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3712
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a2d268d2f8540160ed05177f76fcf3b903928aa2bac193ca991c410eb908193f.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2552
- - 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:4396
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:5460

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:4912

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 ca459daecf8553ac7b5f4a9d72b032e6b6e46faceeea9990d478c2db0e2d84a1
MD5 fb8754b181b653626efc3aefa69d2b23
SHA1 e0528fa498869391119c0dd381ab1ee4fad883b8
SHA512 393bcf462ed9b7d6a9f99e506cc1d00bb897a829a94fffa9c33ba30bf6bc42d797b2257639c22557098d1f96c250794386a30c2439039539a421025d205a6ab2
SSDEEP 24576:2bLgddQhfdmMSirYbcMNgef0QeQjGQQYmPbINO:2nAQqMSPbcBVQejZYcMNO
TLSH
T17006CF15BBD8D0A5D0B852318EA78AAD2333FC455E51870FB254FF2E2DB23589F61E90
MD5 SHA1 SHA512 SSDEEP TLSH

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 5eec5dfc1dd88790c1d84f478587c9f18ebe9b0666dd1b149392b2fce9b40a14
MD5 5157433e46290bebb3a972c9bfd2851e
SHA1 4a8ac5280c586bf788fe5114b940a7b7462b8a75
SHA512 5792f7fcfcedb1ee832cfcd61fdfc1a753b1a5aec4179f2e907a94cbe74efed6b107be42ab0a797b5489e0b3d06d41167845a1ce7af537c97d01bb4143da7466
SSDEEP 24576:nQhfdmMSirYbcMNgef0QeQjGQQYmPbINS:nQqMSPbcBVQejZYcMNS
TLSH
T138F5CF14FBD4E196D0B812358F66CAAD2333FD455E42870BB254BF1E2DB53588F62E84
MD5 SHA1 SHA512 SSDEEP TLSH