cosmu | 7d10a9463f7eb895b6b90e1a1f5dd6060e16f07b2edd762155c2c132a777f714

Analysis

max time kernel
149s
max time network
123s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
16/04/2026, 01:00

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General

Target
2026-04-15_c14e80ccc6b1027b0982fa140000f619_elex_wannacry.exe
Size 869KB
Sample260416-bc6lyags2s
SHA256 7d10a9463f7eb895b6b90e1a1f5dd6060e16f07b2edd762155c2c132a777f714
MD5 c14e80ccc6b1027b0982fa140000f619
SHA1 48551a650b4fbc7b5194634962c7c87365c6d5db
SHA512 bd16a3bd89038dc5f96677a553abe383520cd6171f51e2874fb7aca0ee1b2031c03713173e91653e382bc284b861aba26903d0e16d8729a081def91c620c09be
SSDEEP 12288:GPyOVLNzyW/wRsS19BQ5/C5Um7ybjMips1WSYHW3:GqOVLNzBU7ybjMipiWS1
TLSH
T151155FF4661B7CD2C6E99AF0495172F98C626FB33E78F6D8C5C2742E3326A966004734
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/2700-0-0x0000000000400000-0x000000000040A000-memory.dmp	family_cosmu
behavioral2/memory/2700-1-0x0000000000400000-0x000000000040A000-memory.dmp	family_cosmu

Custom signature

Detects executables packed with eXPressor 2 IoCs

resource	yara_rule
behavioral2/memory/2700-0-0x0000000000400000-0x000000000040A000-memory.dmp	INDICATOR_EXE_Packed_eXPressor
behavioral2/memory/2700-1-0x0000000000400000-0x000000000040A000-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	2026-04-15_c14e80ccc6b1027b0982fa140000f619_elex_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2026-04-15_c14e80ccc6b1027b0982fa140000f619_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-04-15_c14e80ccc6b1027b0982fa140000f619_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2700

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/2700-0-0x0000000000400000-0x000000000040A000-memory.dmp

Download

memory/2700-1-0x0000000000400000-0x000000000040A000-memory.dmp