eefb014081d8491510af93745d2991b959f6e5e5b421cd5bfc1dfd9f0e1eb856

Analysis

max time kernel
298s
max time network
326s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20260911-es
resource tags

arch:x64arch:x86image:win10ltsc2021-20260911-eslocale:es-esos:windows10-ltsc_2021-x64systemwindows
submitted
23/10/2026, 23:46

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General

Target
Oneshot/libbz2.dll
Size 247KB
Sample261023-3sr72adh38
SHA256 eefb014081d8491510af93745d2991b959f6e5e5b421cd5bfc1dfd9f0e1eb856
MD5 1d72f15b2d1ec29749fb08d185509b0d
SHA1 e4d48359b5c0aa249889e0f09b6a02ff0c7f7cd1
SHA512 5376d1e98d05195bb60e74db80f02d84abf25ff75700107fa48447d01b35129049e2401a25ec0b50938d80635acf3ae0b384e1585942eacb1d28454d60ddd202
SSDEEP 3072:mz6SOHugv0+LwH2E8qdvHMIy9uLm0qimKa1yU1GpW2RHuaVQSout:tSOHB8+LwWXGMIy9uaDyHpW4Hu0
TLSH
T1A7448D44F7CA4DF7E706023648D7931B1B3ED1802602CF97AE24AD3DA64B7A6B5C7648
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1100	2224	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 1 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	rundll32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 1108 wrote to memory of 2224	1108	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Oneshot\libbz2.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1108
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\Oneshot\libbz2.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2224
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2224 -s 600
    3⤵
    - Program crash
    PID:1100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2224 -ip 2224
1⤵
PID:3432

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

memory/2224-0-0x0000000061980000-0x00000000619C2000-memory.dmp

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