cosmu | 84839ef9320a76812c3f5fa763d5fd22d4c0970078021f9e07289106ee63f8b7

Analysis

max time kernel
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
22/07/2026, 13:22

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General

Target
84839ef9320a76812c3f5fa763d5fd22d4c0970078021f9e07289106ee63f8b7.exe
Size 12.6MB
Sample260722-qmecrsfb63
SHA256 84839ef9320a76812c3f5fa763d5fd22d4c0970078021f9e07289106ee63f8b7
MD5 c630e32caf6b1651ba0cd41b15d196b0
SHA1 5cd5c690533134a58a42c0566c4d95b84c659fb6
SHA512 41bad841517024ecab92d3b4940a47c9b9a7a85f098475915dd0452fb02e8e0d41434efbd128bbd87b7f97c238c09c0b32177d5e747bbdf3d90a19a529285b08
SSDEEP 98304:rzqEv60gsOTGMN6bbjNCZia56g65PRdKNtMGMnRzBrpFSqLsO86msAeN75jJW5Bf:rE0XQGMN6bbMLP+2zqqGGEu
TLSH
T129D639BE6F64FC609880AC52D9B2CE50DD8F5C827199C430857EF9608E44ED1CDADAB7
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/5520-0-0x0000000000400000-0x0000000000407000-memory.dmp	family_cosmu
behavioral2/memory/5520-1-0x0000000000400000-0x0000000000407000-memory.dmp	family_cosmu

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	84839ef9320a76812c3f5fa763d5fd22d4c0970078021f9e07289106ee63f8b7.exe

C:\Users\Admin\AppData\Local\Temp\84839ef9320a76812c3f5fa763d5fd22d4c0970078021f9e07289106ee63f8b7.exe
"C:\Users\Admin\AppData\Local\Temp\84839ef9320a76812c3f5fa763d5fd22d4c0970078021f9e07289106ee63f8b7.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:5520

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/5520-0-0x0000000000400000-0x0000000000407000-memory.dmp

Download

memory/5520-1-0x0000000000400000-0x0000000000407000-memory.dmp