cosmu | e7e7e5a5a0e180135b319485f09c03337eba55c9f9b220f9a16093b96f8049d9

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
08/07/2026, 09:49

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General

Target
2026-07-08_8cfe9da0706296e6e6267fbcf8ca1f83_elex_wannacry.exe
Size 21KB
Sample260708-ltff7aez8p
SHA256 e7e7e5a5a0e180135b319485f09c03337eba55c9f9b220f9a16093b96f8049d9
MD5 8cfe9da0706296e6e6267fbcf8ca1f83
SHA1 ec467af3bee9a8bcac1ea980e0037e4a2e40e657
SHA512 c2409a3fe024eab0a0a58b86d7d2292d9cb5715ef48c83186009eca3e61d9287511e437542d13cd5ca376bce8f2089d154d512d041f7da33641975788401c80b
SSDEEP 384:KlxBt7Br5xjLeAgobS37bh4KWLj7GfBsUAQ:KD7BlpSUbSrbh4K0j7OuU
TLSH
T1AEA25C6FAB0DC071D38D4534087D657CDC33A2286675BF9BF32ACC0955262D1E87829A
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
behavioral1/memory/3332-0-0x0000000000400000-0x0000000000408000-memory.dmp	family_cosmu

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2388	3332	WerFault.exe	86

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	2026-07-08_8cfe9da0706296e6e6267fbcf8ca1f83_elex_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2026-07-08_8cfe9da0706296e6e6267fbcf8ca1f83_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-08_8cfe9da0706296e6e6267fbcf8ca1f83_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:3332
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3332 -s 192
  2⤵
  - Program crash
  PID:2388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3332 -ip 3332
1⤵
PID:2200

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/3332-0-0x0000000000400000-0x0000000000408000-memory.dmp

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