cosmu | af0a114793c901e0d1bc296c065b63a58707875079721fea555355c4792288e7

Analysis

max time kernel
149s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
13/11/2026, 07:37

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General

Target
2026-11-12_18add8c585b4ad8e76e78af959aa4620_elex_wannacry.exe
Size 143KB
Sample261113-jgbw5ahv2j
SHA256 af0a114793c901e0d1bc296c065b63a58707875079721fea555355c4792288e7
MD5 18add8c585b4ad8e76e78af959aa4620
SHA1 6e02d1b6c7a9fe2903f95e168441bcf46b0f2d7c
SHA512 9e2231a1c24c407fd7c5996e47823ba49e139bcc10bb8e53c55a9c2f67a242eac7a28765c4c830b18b0dced829c7827e7fa06ab99a5f3b35a11350a39c6fa2b2
SSDEEP 3072:7pWp6qFx/0ongPMMhz99iMGfUSaOy9SnJUwFU+FUhFUeFUXFUqyqKRrpF6Pw2:0HxJMMMhz99iMGsSaOyiN
TLSH
T1D0E352821413D680D24FA737EBD7AA79227854BAECB4CFE1CDE4F8739044A6592B4C53
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
behavioral1/memory/4396-0-0x0000000000400000-0x000000000040A000-memory.dmp	family_cosmu
behavioral1/memory/4396-2-0x0000000000400000-0x000000000040A000-memory.dmp	family_cosmu

Custom signature

Detects executables packed with eXPressor 2 IoCs

resource	yara_rule
behavioral1/memory/4396-0-0x0000000000400000-0x000000000040A000-memory.dmp	INDICATOR_EXE_Packed_eXPressor
behavioral1/memory/4396-2-0x0000000000400000-0x000000000040A000-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	2026-11-12_18add8c585b4ad8e76e78af959aa4620_elex_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2026-11-12_18add8c585b4ad8e76e78af959aa4620_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-11-12_18add8c585b4ad8e76e78af959aa4620_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4396

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/4396-0-0x0000000000400000-0x000000000040A000-memory.dmp

Download

memory/4396-2-0x0000000000400000-0x000000000040A000-memory.dmp