cosmu | 2f3b7060cb5832d0970d77ef829509083d3e6c3fd675071723f4cff8c6cfd887

Analysis

max time kernel
149s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20260130-en
resource tags

arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
26/04/2026, 16:49

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General

Target
2026-04-26_2637837c114e8856e66cc2ab26d36ade_cobalt-strike_elex_wannacry.exe
Size 3.8MB
Sample260426-vbml8abz3w
SHA256 2f3b7060cb5832d0970d77ef829509083d3e6c3fd675071723f4cff8c6cfd887
MD5 2637837c114e8856e66cc2ab26d36ade
SHA1 20d89a9cde83977aa82816d2a5ec2bce4b890331
SHA512 5bfd6009863930fa266005452293fbcf03bca16921f753fcebe31c41e9e89c53e79e0de08a8d7370491dd07631578de00e80c10d3c0d34394516361bdcd5ff7f
SSDEEP 49152:G424pOK123wBa1c603wsZga2udET1I+51Oj1CvTA+GG6OT75XvPWzAcbYJyXz5dO:3qEv60gsOTGMN6bbjNCZia56g65PRW
TLSH
T1B51639B5BA3C7975D481546FEE599B839C8B1D022384466C417E80B78F48EA3F809FED
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/4196-0-0x0000000000400000-0x000000000040A000-memory.dmp	family_cosmu
behavioral1/memory/4196-1-0x0000000000400000-0x000000000040A000-memory.dmp	family_cosmu

Detects executables packed with eXPressor 2 IoCs

resource	yara_rule
behavioral1/memory/4196-0-0x0000000000400000-0x000000000040A000-memory.dmp	INDICATOR_EXE_Packed_eXPressor
behavioral1/memory/4196-1-0x0000000000400000-0x000000000040A000-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	2026-04-26_2637837c114e8856e66cc2ab26d36ade_cobalt-strike_elex_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2026-04-26_2637837c114e8856e66cc2ab26d36ade_cobalt-strike_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-04-26_2637837c114e8856e66cc2ab26d36ade_cobalt-strike_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:4196

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/4196-0-0x0000000000400000-0x000000000040A000-memory.dmp

Download

memory/4196-1-0x0000000000400000-0x000000000040A000-memory.dmp