d8122db12c9c353679bc1a2a4691843986b598a0b69bbfea347b76346a88a5ad

Analysis

max time kernel
149s
max time network
126s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
05/06/2026, 05:00

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General

Target
2026-06-05_8256d2429d1121d95b0c76340c43e0bd_elex_nitol_wannacry.exe
Size 41KB
Sample260605-fnfbcaa121
SHA256 d8122db12c9c353679bc1a2a4691843986b598a0b69bbfea347b76346a88a5ad
MD5 8256d2429d1121d95b0c76340c43e0bd
SHA1 437a3be57aefacf3b57572eea2f57a7830a506b1
SHA512 68e8beae34091f9c297fde60570f5a82c0a5c9283ef468d6dd7fc5ff10664e7adeed654f9abba8921a268dc49a5a873399f18f072fbe2def29f98a19fb98a447
SSDEEP 768:EvQ5qDLHRdw2iPSMEk/6KMvu571xuEMs96cyX18693Wr:EvQoLHjw2iWPKMvw71sMLyXuhr
TLSH
T190132B579BC1C492D567023458E6B3BB6DA7BC3A4A0ED116FF40FA8E1875902FB39903
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

defense_evasion discovery

Malware Config

Signatures

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

resource	yara_rule
behavioral2/files/0x001d00000002b237-2.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Executes dropped EXE 1 IoCs

pid	Process
1104	mewhost.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Debug\mewhost.exe	2026-06-05_8256d2429d1121d95b0c76340c43e0bd_elex_nitol_wannacry.exe
File opened for modification	C:\Windows\Debug\mewhost.exe	2026-06-05_8256d2429d1121d95b0c76340c43e0bd_elex_nitol_wannacry.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	2026-06-05_8256d2429d1121d95b0c76340c43e0bd_elex_nitol_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mewhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	mewhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	mewhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2988	2026-06-05_8256d2429d1121d95b0c76340c43e0bd_elex_nitol_wannacry.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 4044	2988	2026-06-05_8256d2429d1121d95b0c76340c43e0bd_elex_nitol_wannacry.exe	81

C:\Users\Admin\AppData\Local\Temp\2026-06-05_8256d2429d1121d95b0c76340c43e0bd_elex_nitol_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-06-05_8256d2429d1121d95b0c76340c43e0bd_elex_nitol_wannacry.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\2026-0~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4044

C:\Windows\Debug\mewhost.exe
C:\Windows\Debug\mewhost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:1104

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

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

mewhost.exe

Path C:\Windows\debug\mewhost.exe
Size 41KB
SHA256 0ac9d13b6e304ab39332fac293d78d00dcdf8355d37ccd9d220de20488081e7d
MD5 c058235ab71b931e967d61e84c3de709
SHA1 8d4171a300b2d0b2968e4e7b34bdaad77874b984
SHA512 7003cf4c507dca112034d39f03e7cce04b4fea6f5fb0ba71ad2f233b973c4b97fc6647ca99fd47bec6348bf2dd1099e8ca49aad6ac51e394606700cba1621ac3
SSDEEP 768:EvQ5qDLHRdw2iPSMEk/6KMvu571xuEMs96cyX18693WS:EvQoLHjw2iWPKMvw71sMLyXuhS
TLSH
T129132B579BC1C492D567023458E6B3BB6DA7BC3A4A0ED116FF40FA8E1875902FB39903
MD5 SHA1 SHA512 SSDEEP TLSH

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