cosmu | c08741ad0fefad9850da39701c35f037ee75239b4a4c8d38524c896c9f7e2038

Analysis

max time kernel
148s
max time network
143s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
25/10/2026, 00:04

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General

Target
2026-10-24_fddb369e1948278c4745f634e2d5d164_elex_wannacry.exe
Size 21KB
Sample261025-acrx4sc15v
SHA256 c08741ad0fefad9850da39701c35f037ee75239b4a4c8d38524c896c9f7e2038
MD5 fddb369e1948278c4745f634e2d5d164
SHA1 d3c5adf1f39656a0b695dff172d1bd22125dd945
SHA512 de8ae93dc122cd068419821a51dabe9527fb60ab3bb12716c0a2eecb71a3c50f8a605461673852aa347b829caa1251201900d72a259c79e87de474c52ecc89ed
SSDEEP 384:KlxBt7Br5xjLyAgobS37bhuKWL/7GfBsUAQ:KD7Blp2UbSrbhuK0/7OuU
TLSH
T1B1A26C6F5F4DD071D38C8530082D657CDC33A2282675BF8BF32ECC5A552A2D1D8B829A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery cosmu worm

Malware Config

Signatures

Family: Cosmu
Cosmu is a Windows worm written in C++.
worm cosmu

Detects Cosmu payload 1 IoCs

Cosmu is a worm written in C++.

resource	yara_rule
behavioral2/memory/2352-0-0x0000000000400000-0x0000000000408000-memory.dmp	family_cosmu

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4088	2352	WerFault.exe	89

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	2026-10-24_fddb369e1948278c4745f634e2d5d164_elex_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2026-10-24_fddb369e1948278c4745f634e2d5d164_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-24_fddb369e1948278c4745f634e2d5d164_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2352
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2352 -s 256
  2⤵
  - Program crash
  PID:4088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2352 -ip 2352
1⤵
PID:3232

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/2352-0-0x0000000000400000-0x0000000000408000-memory.dmp

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