4b779ac1877cd4c1cf7d78eb260233a35efb7dadb0e036c5c1bf98c2633c3e8a

Analysis

max time kernel
149s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
22/05/2026, 09:28

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General

Target
2026-05-22_04948697f1b33dfa9168a8a9aaf5d275_elex_wannacry.exe
Size 80KB
Sample260522-lfe89sgv5m
SHA256 4b779ac1877cd4c1cf7d78eb260233a35efb7dadb0e036c5c1bf98c2633c3e8a
MD5 04948697f1b33dfa9168a8a9aaf5d275
SHA1 6d30f6584b565d64893524e8c2a127b69ed51ccb
SHA512 61e871c1dc5cfce8bf7bd3ee7217efd72634270945e7ab70db7168dae6e5cd69382051b3d6481a06e829076ea28a17107e3ebbe33d25cd93e42906f2bed23156
SSDEEP 1536:QXEp241sRkm/M1MkxE37WUjMrhK/dIy5DVMnc92eRQWGf:Q0p241mkiM1MkoWUjmhgOcdLQNf
TLSH
T1EE83CE2FB6B419F7F8738474F84D4B29D7BB14105775822A8FA05E952DB8381863EF0A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
3332	wmcserv.exe

Executes dropped EXE 2 IoCs

pid	Process
3332	wmcserv.exe
2024	wmcserv.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\wmcserv.exe	2026-05-22_04948697f1b33dfa9168a8a9aaf5d275_elex_wannacry.exe
File created	C:\Windows\SysWOW64\wmcserv.exe	2026-05-22_04948697f1b33dfa9168a8a9aaf5d275_elex_wannacry.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	2026-05-22_04948697f1b33dfa9168a8a9aaf5d275_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmcserv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wmcserv.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
928	2026-05-22_04948697f1b33dfa9168a8a9aaf5d275_elex_wannacry.exe
928	2026-05-22_04948697f1b33dfa9168a8a9aaf5d275_elex_wannacry.exe
2024	wmcserv.exe
2024	wmcserv.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2024	wmcserv.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 928 wrote to memory of 3332	928	2026-05-22_04948697f1b33dfa9168a8a9aaf5d275_elex_wannacry.exe	80

C:\Users\Admin\AppData\Local\Temp\2026-05-22_04948697f1b33dfa9168a8a9aaf5d275_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-05-22_04948697f1b33dfa9168a8a9aaf5d275_elex_wannacry.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:928
- C:\Windows\SysWOW64\wmcserv.exe
  C:\Windows\system32\wmcserv.exe -d "C:\Users\Admin\AppData\Local\Temp\2026-05-22_04948697f1b33dfa9168a8a9aaf5d275_elex_wannacry.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3332

C:\Windows\SysWOW64\wmcserv.exe
C:\Windows\SysWOW64\wmcserv.exe -v
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2024

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

wmcserv.exe

Path C:\Windows\SysWOW64\wmcserv.exe
Size 80KB
SHA256 64aaa2c8e7ebc261681021e048d5f52fb6ab2e30bcc13670a5fb0e4513d352c1
MD5 5d75402763e9f36cddcdc2f13f7c39df
SHA1 dcdcb5b50c4f92098ec2c83901b8e9df01b03acc
SHA512 870857392ee6d30f9b0fa7d0d94f5a4851a79665b2a5704504bdc26cd6fde9e442d0d0b07058d7929ecf72ddc8c41cb9c315c2d52777638d71c7ab03ae27c5a8
SSDEEP 1536:QXEp241sRkm/M1MkxE37WUjMrhK/dIy5DVMnc92eRQW0V:Q0p241mkiM1MkoWUjmhgOcdLQXV
TLSH
T1B083CE2FB6B419F7F4738474F84D4B29D7BB14105775822A8FA05E952DB8381863DF0A
MD5 SHA1 SHA512 SSDEEP TLSH

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