cosmu | 06011946b3f602b4ab7d03a1a912c21135393dba0ec5e991e5ac9c809f9ef33b

Analysis

max time kernel
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
24/10/2026, 12:16

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General

Target
2026-10-22_5a2b72e7e29d3d303ae87321fb3098f6_cobalt-strike_elex_hijackloader_vidar_wannacry.exe
Size 783KB
Sample261024-pfe52stzf1
SHA256 06011946b3f602b4ab7d03a1a912c21135393dba0ec5e991e5ac9c809f9ef33b
MD5 5a2b72e7e29d3d303ae87321fb3098f6
SHA1 44f2083b72d64f87e19d989922bf9ce77f8f809f
SHA512 639ab7a42e71171dca385dfa4ad8fd64a823d2df9c9c7fc5ec987efa3b0ca84c8edb882e4b85c8564bde180f0bfa515db11d59d2917da982bbf9498f001742e3
SSDEEP 12288:GbRX4rJzFa1pgpqQT7uVp0VPBuOpiK8SGLsr+d/3MYrw:GbJZ1ypqz/BLsr+dG
TLSH
T1E705291CA53641E5E17C673031E07A98CA71B159B6EECA7D5B97E3240B54FB0B8E03AC
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
behavioral2/memory/2132-0-0x0000000000400000-0x000000000040A000-memory.dmp	family_cosmu
behavioral2/memory/2132-1-0x0000000000400000-0x000000000040A000-memory.dmp	family_cosmu

Detects executables packed with eXPressor 2 IoCs

resource	yara_rule
behavioral2/memory/2132-0-0x0000000000400000-0x000000000040A000-memory.dmp	INDICATOR_EXE_Packed_eXPressor
behavioral2/memory/2132-1-0x0000000000400000-0x000000000040A000-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	2026-10-22_5a2b72e7e29d3d303ae87321fb3098f6_cobalt-strike_elex_hijackloader_vidar_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2026-10-22_5a2b72e7e29d3d303ae87321fb3098f6_cobalt-strike_elex_hijackloader_vidar_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-22_5a2b72e7e29d3d303ae87321fb3098f6_cobalt-strike_elex_hijackloader_vidar_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:2132

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/2132-0-0x0000000000400000-0x000000000040A000-memory.dmp

Download

memory/2132-1-0x0000000000400000-0x000000000040A000-memory.dmp