MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a2b6234c80df7df91b4b159bb4a4f3f0c33e0764889f5df17ed80ced99a34205. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Cosmu


Vendor detections: 10


Intelligence 10 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a2b6234c80df7df91b4b159bb4a4f3f0c33e0764889f5df17ed80ced99a34205
SHA3-384 hash: 29d7c4cdbba31c3e774ee147534f31c600305508acaca1ddce5195da8a356c5c74bef0f45c6891626d3e271981e0f37c
SHA1 hash: 56d06358c9d0ca5cd651400f28529a7cfedc299b
MD5 hash: b5a8a291d4ee83a6a397c742239b02b4
humanhash: nuts-sodium-charlie-edward
File name:MsoHtmEd.Exe
Download: download sample
Signature Cosmu
Create hunting rule
File size:221'185 bytes
First seen:2026-06-05 17:49:57 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 5aa33c577ffd8431ff254de85dee5e7b (45 x Cosmu)
ssdeep 3072:EQXi3tGXRvjxCb5NgXDY7uSlkJcUa7kYQTcqW2NdQQGH/UDhSCUc4aqTBzZ:d9lKgzelZNQSBQGH/CSpWqTn
TLSH T13E24F1453D93C4B3D041497289E58BD18B7F6D03BAA2E15BFF9D0A4B4EB02984BB7361
TrID 50.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
10.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
10.5% (.EXE) Win64 Executable (generic) (6522/11/2)
8.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.2% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter qemped
Tags:Cosmu exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
125
Origin country :
ID ID
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
_a2b6234c80df7df91b4b159bb4a4f3f0c33e0764889f5df17ed80ced99a34205.exe
Verdict:
No threats detected
Analysis date:
2026-06-05 17:51:47 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/560d10c8-9d34-4182-8977-8fce0774e3d6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/69228/
Detection(s):
Win.Worm.Generic-9786786-0
Create hunting rule

Win.Malware.Cosmu-9806582-0
Create hunting rule

Win.Worm.Agent-1344274
Create hunting rule

Win.Worm.388260-1
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a230c8d57b7bf261d613ece
Tags:
cosmu agent virus worm
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Replacing executable files
Moving a recently created file
Enabling the 'hidden' option for recently created files
Creating a file in the Program Files subdirectories
Moving a file to the Program Files subdirectory
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/a2b6234c80df7df91b4b159bb4a4f3f0c33e0764889f5df17ed80ced99a34205
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-06-05T04:04:00Z UTC
Last seen:
2026-06-05T04:25:00Z UTC
Hits:
~10
Detections:
HEUR:Virus.Win32.Generic HEUR:Trojan.Win32.Cosmu.gen
Link:
https://opentip.kaspersky.com/a2b6234c80df7df91b4b159bb4a4f3f0c33e0764889f5df17ed80ced99a34205/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/aa78691c-1de7-4901-9c8a-1e63fdbf4e38
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a2b6234c80df7df91b4b159bb4a4f3f0c33e0764889f5df17ed80ced99a34205
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a2b6234c80df7df91b4b159bb4a4f3f0c33e0764889f5df17ed80ced99a34205/
Verdict:
Malicious
Threat:
Family.COSMU
Link:
https://tip.neiki.dev/file/a2b6234c80df7df91b4b159bb4a4f3f0c33e0764889f5df17ed80ced99a34205
Threat name:
Win32.Virus.Emdup
Create hunting rule
Status:
Malicious
First seen:
2026-06-04 16:39:16 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
22 of 23 (95.65%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uk3cgtea3567sg2lcwn3jjht6dbt4b3ercpv34l63ago3gndiicq._file
Result
Malware family:
cosmu
Create hunting rule
Score:
  10/10
Tags:
family:cosmu discovery worm
Link:
https://tria.ge/reports/260605-wex3ssc16n/
Behaviour
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Enumerates connected drives
Detects Cosmu payload
Family: Cosmu
Unpacked files
SH256 hash:
a2b6234c80df7df91b4b159bb4a4f3f0c33e0764889f5df17ed80ced99a34205
MD5 hash:
b5a8a291d4ee83a6a397c742239b02b4
SHA1 hash:
56d06358c9d0ca5cd651400f28529a7cfedc299b
Link:
https://www.unpac.me/results/a9bab219-dc01-4ddc-93d4-e398bd039ea4/
Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:https://cyfare.net/
Rule name:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/69228/

Comments