wannacry | 3c5592c53301f894a58c7c0c3363449fed56b68c4e9be778d4da7665edba528f

Analysis

max time kernel
150s
max time network
154s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
02/10/2026, 05:48

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General

Target
3c5592c53301f894a58c7c0c3363449fed56b68c4e9be778d4da7665edba528f.dll
Size 5.0MB
Sample261002-ghvdrasvgv
SHA256 3c5592c53301f894a58c7c0c3363449fed56b68c4e9be778d4da7665edba528f
MD5 494753ed4a622aab1b3ec4ea1c9615a7
SHA1 3c0610c0f7befd98a03be5e3daf1cdb4041918a5
SHA512 3027613bd36e5711be504357908855b14c1d4ff39510bef0880a949b3917fc21e710717bb372acefaf49314c7d430740833d359e660928532114254123ad4e1d
SSDEEP 98304:nlqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2H:nlqPe1Cxcxk3ZAEUadzR8yc4H
TLSH
T109363394616CB2FCE0450EB444738A5BB7B33C69A7BA4F1F9BC086660D43B5BAFD0641
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
4136	mssecsvr.exe
5044	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 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\mssecsvr.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvr.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	mssecsvr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mssecsvr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
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
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

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 720 wrote to memory of 3188	720	rundll32.exe	89
PID 3188 wrote to memory of 4136	3188	rundll32.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3c5592c53301f894a58c7c0c3363449fed56b68c4e9be778d4da7665edba528f.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:720
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3c5592c53301f894a58c7c0c3363449fed56b68c4e9be778d4da7665edba528f.dll,#1
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3188
- - C:\WINDOWS\mssecsvr.exe
    C:\WINDOWS\mssecsvr.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:4136

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:5044

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

mssecsvr.exe

Path C:\Windows\mssecsvr.exe
Size 3.6MB
SHA256 68cfb1e94d3e45d83d6ba05812fc05e56d9e8b573de0cf4836c80466fb631a38
MD5 004550fb4c6660e1b3d8fa301b45a998
SHA1 d8d16fcb658c17b5af2ada945cbfcf23536a4cf8
SHA512 0fb91af9dfe030d324c598afe18d83c2e436b1b84c659733a66256969504f11cc9110dbb9eb69d5ab7b5fc9eaf7ce74504613d1f3a8e0baebe1a4a8313eb8417
SSDEEP 98304:olqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2HI:olqPe1Cxcxk3ZAEUadzR8yc4HI
TLSH
T141063394616CB2FCF0450EB444738A5AB7B33C69A7BA4F1F97C086660D43B9BAFD0641
MD5 SHA1 SHA512 SSDEEP TLSH

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