cosmu | 822faa5cae22265602da80802de9b428dc7d28a004b86067fcc2a26eeffcec17

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
16/07/2026, 16:08

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General

Target
2026-07-16_79097e2c1a983be754bdeca430d6cef9_elex_wannacry.exe
Size 21KB
Sample260716-tk6wsacy2x
SHA256 822faa5cae22265602da80802de9b428dc7d28a004b86067fcc2a26eeffcec17
MD5 79097e2c1a983be754bdeca430d6cef9
SHA1 d7729de2d261227dfd420444ddddd35e5e344d3d
SHA512 ce54cb50f32581b272d012737ae03a40da4435ba746e584447ef41fa338057c579055e351f357477cc2fc482268ce8b5ef645886948dcf80812831832b01921a
SSDEEP 384:KlxBt7Br5xjLUAgobS37bh4KWLj7GfBsUAQ:KD7Blp4UbSrbh4K0j7OuU
TLSH
T120A25C6FAB0DD071D38D8534086D697CDC33A2282675BF9BF72ACC0955262D1D87829A
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/4816-0-0x0000000000400000-0x0000000000408000-memory.dmp	family_cosmu

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3172	4816	WerFault.exe	85

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	2026-07-16_79097e2c1a983be754bdeca430d6cef9_elex_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2026-07-16_79097e2c1a983be754bdeca430d6cef9_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-07-16_79097e2c1a983be754bdeca430d6cef9_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4816 -s 216
  2⤵
  - Program crash
  PID:3172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4816 -ip 4816
1⤵
PID:5076

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/4816-0-0x0000000000400000-0x0000000000408000-memory.dmp

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