cosmu | 071c4bf94fd016e32d27f9664c19411482dab07a753e7536e8c7c37018d85758

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
15/04/2026, 23:22

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General

Target
2026-04-15_4ee2063b01715e1a32fc8cd057472ddc_elex_wannacry.exe
Size 2.0MB
Sample260415-3cyd4ses4y
SHA256 071c4bf94fd016e32d27f9664c19411482dab07a753e7536e8c7c37018d85758
MD5 4ee2063b01715e1a32fc8cd057472ddc
SHA1 b4f3440e33a611c00ba1ff84470274c9d381fcea
SHA512 9bbda3723d509c808f095f991f51e5fdecdeb2828feabf2c63bb012c621b9480cb61f01917356a6a39fcd6a89426898c60990a1bca9cd2193af40b7d30e7aab6
SSDEEP 24576:G25QycrRwGKweotKHiPTQEkhYzCWkPlGnPwPszWNBGjZ60qFEBVPzwrXCxeEdfhU:G4cvvtKHawlGnPwPszW2Z4eiIijdtpU6
TLSH
T190A5AE66A1717EB4D194C2BD8A22E68DEE607C14335EEDC3425161B61E32BF05EFC21B
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/612-0-0x0000000000400000-0x000000000040A000-memory.dmp	family_cosmu
behavioral1/memory/612-1-0x0000000000400000-0x000000000040A000-memory.dmp	family_cosmu

Custom signature

Detects executables packed with eXPressor 2 IoCs

resource	yara_rule
behavioral1/memory/612-0-0x0000000000400000-0x000000000040A000-memory.dmp	INDICATOR_EXE_Packed_eXPressor
behavioral1/memory/612-1-0x0000000000400000-0x000000000040A000-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_4ee2063b01715e1a32fc8cd057472ddc_elex_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2026-04-15_4ee2063b01715e1a32fc8cd057472ddc_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-04-15_4ee2063b01715e1a32fc8cd057472ddc_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:612

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

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Downloads

memory/612-0-0x0000000000400000-0x000000000040A000-memory.dmp

Download

memory/612-1-0x0000000000400000-0x000000000040A000-memory.dmp