lockbit | 637be4d4df565ad9299be22e19deacaa343f05d56fb9ea0a201fb012ac8f4df9

Analysis

user interaction
yes
max time kernel
148s
max time network
146s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
21/08/2026, 04:31

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General

Target
muestra.exe
Size 153KB
Sample260821-e5lc9aw1bz
SHA256 637be4d4df565ad9299be22e19deacaa343f05d56fb9ea0a201fb012ac8f4df9
MD5 c747d254c6d42c00e4150288a6198a47
SHA1 ed69c7493d53fb91758d5c0145e0e35abc2ab3fc
SHA512 be1334d07533c990f94f153767fa45fd8f9597ec913835a3119a7a16eac2b0a428de6534526971f2ebcd00261e33c4dd5b0e0698467b69f86beeaaa5cf28e612
SSDEEP 3072:mY+xaCkDC5Gvuy7rEMdZy6BTJ1GqiTLR6EiWuOlUnUKZaV:mJqC5lyfdZy6ZGzVUn/aV
TLSH
T118E312A341075D79DB89297BCE5C263C962D6E806E50F5E578A8F803DCF38FFA900459
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery lockbit ransomware

Malware Config

Signatures

Family: Lockbit
Ransomware family with multiple variants released since late 2019.
ransomware lockbit

Rule to detect Lockbit 3.0 ransomware Windows payload 2 IoCs

resource	yara_rule
behavioral2/memory/1052-0-0x0000000000400000-0x000000000042A000-memory.dmp	family_lockbit
behavioral2/memory/1052-1-0x0000000000400000-0x000000000042A000-memory.dmp	family_lockbit

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1440	1052	WerFault.exe	87

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	muestra.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mshta.exe

C:\Users\Admin\AppData\Local\Temp\muestra.exe
"C:\Users\Admin\AppData\Local\Temp\muestra.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:1052
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1052 -s 308
  2⤵
  - Program crash
  PID:1440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1052 -ip 1052
1⤵
PID:4044

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\MeasureEnter.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
1⤵
- System Location Discovery: System Language Discovery
PID:4524

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

Replay Monitor

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Downloads

memory/1052-0-0x0000000000400000-0x000000000042A000-memory.dmp

Download

memory/1052-1-0x0000000000400000-0x000000000042A000-memory.dmp