fc11541795507242b8620dcaf8b01cff573015e16b7d382123b92bba985185f5

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
04/08/2026, 14:30

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General

Target
2026-08-04_b4a5f76cb2b2b3366a05b3d66b2bb960_elex_wannacry.exe
Size 426KB
Sample260804-rt9mxssfna
SHA256 fc11541795507242b8620dcaf8b01cff573015e16b7d382123b92bba985185f5
MD5 b4a5f76cb2b2b3366a05b3d66b2bb960
SHA1 b4957b6275ffefe9ed7ab8fd96570a34655a5090
SHA512 b5d11ae104cef863d550a48b9decaae17761346596ee390365d8dacb2d0e4c2a2eb8ac49736fd319486d48858cfd2537b2b9ef49fe6f8e50e9575c2d2af39301
SSDEEP 3072:/+cTQW4roD5GBq1IbNvW7ahefnLyO0y8+MvfqNM+cvgo/hDaGkcHl:EJoekW
TLSH
T12594CA4AEBE1AD17D81447394EE39B203731EC89571BC30727D8B9396C7B7C62E912A4
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1244	gykgue.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\gykgue.exe	2026-08-04_b4a5f76cb2b2b3366a05b3d66b2bb960_elex_wannacry.exe
File created	C:\Windows\SysWOW64\gykgue.exe	2026-08-04_b4a5f76cb2b2b3366a05b3d66b2bb960_elex_wannacry.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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	2026-08-04_b4a5f76cb2b2b3366a05b3d66b2bb960_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gykgue.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	gykgue.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	gykgue.exe

C:\Users\Admin\AppData\Local\Temp\2026-08-04_b4a5f76cb2b2b3366a05b3d66b2bb960_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-04_b4a5f76cb2b2b3366a05b3d66b2bb960_elex_wannacry.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
PID:3056

C:\Windows\SysWOW64\gykgue.exe
C:\Windows\SysWOW64\gykgue.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:1244

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

gykgue.exe

Path C:\Windows\SysWOW64\gykgue.exe
Size 426KB
SHA256 fc11541795507242b8620dcaf8b01cff573015e16b7d382123b92bba985185f5
MD5 b4a5f76cb2b2b3366a05b3d66b2bb960
SHA1 b4957b6275ffefe9ed7ab8fd96570a34655a5090
SHA512 b5d11ae104cef863d550a48b9decaae17761346596ee390365d8dacb2d0e4c2a2eb8ac49736fd319486d48858cfd2537b2b9ef49fe6f8e50e9575c2d2af39301
SSDEEP 3072:/+cTQW4roD5GBq1IbNvW7ahefnLyO0y8+MvfqNM+cvgo/hDaGkcHl:EJoekW
TLSH
T12594CA4AEBE1AD17D81447394EE39B203731EC89571BC30727D8B9396C7B7C62E912A4
MD5 SHA1 SHA512 SSDEEP TLSH

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