cosmu | 35f74b92128110a429d0aa3fda6ace95e7772eec4a900a0692223d830aa1dc00

Analysis

max time kernel
148s
max time network
125s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
31/10/2026, 08:23

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General

Target
2026-10-30_1439c686c5b27e58a15d10e57737533d_elex_wannacry.exe
Size 175KB
Sample261031-kad9cavyf1
SHA256 35f74b92128110a429d0aa3fda6ace95e7772eec4a900a0692223d830aa1dc00
MD5 1439c686c5b27e58a15d10e57737533d
SHA1 d9a2e87db840bc340ff2bd97f204b67f9dcbac7e
SHA512 baba9df5817d1d0683baa784719edcfc812440cadf3d7812c9d39204669e8891fe09801ae2f1db9a7259becedc7b671fcead5471ea45b29d84484ccf63d06992
SSDEEP 3072:7pWp6qF8vW5ZMfTiu66I3UwqSsMBlsWb4A+w:0H8YMfTinqncsWp+w
TLSH
T11B04C490386FF394CB451234D9175F9F8A66644B3D15CECBB3ADF4EA53289D0A81F0A2
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 2 IoCs

Cosmu is a worm written in C++.

resource	yara_rule
behavioral2/memory/2488-0-0x0000000000400000-0x000000000040A000-memory.dmp	family_cosmu
behavioral2/memory/2488-1-0x0000000000400000-0x000000000040A000-memory.dmp	family_cosmu

Detects executables packed with eXPressor 2 IoCs

resource	yara_rule
behavioral2/memory/2488-0-0x0000000000400000-0x000000000040A000-memory.dmp	INDICATOR_EXE_Packed_eXPressor
behavioral2/memory/2488-1-0x0000000000400000-0x000000000040A000-memory.dmp	INDICATOR_EXE_Packed_eXPressor

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	2026-10-30_1439c686c5b27e58a15d10e57737533d_elex_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2026-10-30_1439c686c5b27e58a15d10e57737533d_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-30_1439c686c5b27e58a15d10e57737533d_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2488

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/2488-0-0x0000000000400000-0x000000000040A000-memory.dmp

Download

memory/2488-1-0x0000000000400000-0x000000000040A000-memory.dmp