cosmu | 4590a0dc4e48a11d3d653907fb36f974fe44cb419bdd23db3edb073c32da2a58

Analysis

max time kernel
148s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
27/10/2026, 12:39

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General

Target
2026-10-26_88407482a5a517dedcb4b03ea7ae0e6b_elex_wannacry.exe
Size 138KB
Sample261027-pvxnmstybw
SHA256 4590a0dc4e48a11d3d653907fb36f974fe44cb419bdd23db3edb073c32da2a58
MD5 88407482a5a517dedcb4b03ea7ae0e6b
SHA1 d6f8954cff5dd25ab1ed8daed2b0bb2b545f67f5
SHA512 091ab6bb19d858df2a4fc89f8bec1794aecb60b08c5c1e886a7b2974dbdb335cfdeb22e235d13765491f7833a64da6f8de4bc8975814e27f1f9648a477163df5
SSDEEP 3072:7pWp6qFZtttT5ZMfTiu66I3UwqSsMBlsWb4A+H:0HZtttDMfTinqncsWp+H
TLSH
T174D328507CAEF6A0CF442339AD6B5E83D305394F3C5ACE6676A515E3913CEA10C9B0E6
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/5080-0-0x0000000000400000-0x000000000040A000-memory.dmp	family_cosmu
behavioral2/memory/5080-2-0x0000000000400000-0x000000000040A000-memory.dmp	family_cosmu

Detects executables packed with eXPressor 2 IoCs

resource	yara_rule
behavioral2/memory/5080-0-0x0000000000400000-0x000000000040A000-memory.dmp	INDICATOR_EXE_Packed_eXPressor
behavioral2/memory/5080-2-0x0000000000400000-0x000000000040A000-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	2026-10-26_88407482a5a517dedcb4b03ea7ae0e6b_elex_wannacry.exe

C:\Users\Admin\AppData\Local\Temp\2026-10-26_88407482a5a517dedcb4b03ea7ae0e6b_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-10-26_88407482a5a517dedcb4b03ea7ae0e6b_elex_wannacry.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:5080

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:4092

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/5080-0-0x0000000000400000-0x000000000040A000-memory.dmp

Download

memory/5080-2-0x0000000000400000-0x000000000040A000-memory.dmp