wannacry | 9ec4cb23d7d22deee6c274d83841c80c66d74b4e78fe66b0f74b764a761b6187

Analysis

max time kernel
180s
max time network
181s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
28/04/2026, 01:39

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General

Target
9ec4cb23d7d22deee6c274d83841c80c66d74b4e78fe66b0f74b764a761b6187.dll
Size 5.0MB
Sample260428-b284csct4s
SHA256 9ec4cb23d7d22deee6c274d83841c80c66d74b4e78fe66b0f74b764a761b6187
MD5 f0af40572ec25062172e0e5accdd40b1
SHA1 8185e4906c436352daeb1a8c453523e9815d5138
SHA512 8000d70b2c0e4d210b605dd1296ec1d459336eea8812669c24f33b564ed6053c904bcf5bb41be5850e8cf79b01f323a2337fb3aa9474b7fe72125880cb176d4c
SSDEEP 24576:SbLgddQhfdmMSirYbcMNgef0SO6LLuYAMEcpcL7nEaut/8uME76:SnAQqMSPbcBVeAMEcaEau3R
TLSH
T1CC3633625A1C92BCE01517709033453E9B7B3CA1627E961FC7A49EC23D133E6BBA0F56
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 (4203) 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
556	mssecsvc.exe
1124	mssecsvc.exe
2384	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

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 4412 wrote to memory of 3948	4412	rundll32.exe	79
PID 3948 wrote to memory of 556	3948	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9ec4cb23d7d22deee6c274d83841c80c66d74b4e78fe66b0f74b764a761b6187.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4412
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\9ec4cb23d7d22deee6c274d83841c80c66d74b4e78fe66b0f74b764a761b6187.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3948
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    PID:556
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:2384

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
PID:1124

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 b5465025f8e6bc1089ddbb68488a6f5600e1d44a27b53329476b0a69cf60f2d4
MD5 70ef173e0fe423940492edcad5d97c48
SHA1 c0019fe0ff0881a615f3e0344169bc6c8e36c378
SHA512 caa04968e27954ee2c7431fc7a96c91c6da0488b618a271ba4758a3954aeb51f7a2ac71fe8eb761ada62312cea2c983d79ca817759e9366c0a0a8dd6d702ab1f
SSDEEP 24576:2bLgddQhfdmMSirYbcMNgef0SO6LLuYAMEcpcL7nEaut/8uME76X:2nAQqMSPbcBVeAMEcaEau3RS
TLSH
T1E50633625A1C92BCE01517709032453D9B7B3CA1623E961FC7A49FC23D137E6BBA0F56
MD5 SHA1 SHA512 SSDEEP TLSH

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tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 a11eda26f9b73982e9f7d81a5cf312c8ce63bc682c85f4f0e331af889f9c6edc
MD5 74b7950b5ba26023b037f1db6b144323
SHA1 3355e6f2d3a37cd74f19417ce748012ec1cf1f48
SHA512 ff0783508f5625e248f552721c393e51a5ab19473e980d93b625a5afffb1634bfa9d619bd6f2c61317d1b78353cb4614118db571e88c493703df446a25c6074f
SSDEEP 24576:nQhfdmMSirYbcMNgef0SO6LLuYAMEcpcL7nEaut/8uME76Q:nQqMSPbcBVeAMEcaEau3Rl
TLSH
T19BF533F19A14777DF2751AB46020803E1A5A1EF1B18F6A3BC2D42DC27C18BBB6F815D9
MD5 SHA1 SHA512 SSDEEP TLSH