MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef4104e60bec9b76c4c170463700002f2fb0d7098fc0a5bd1e2947787b5319c0. 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


CobaltStrike


Vendor detections: 17


Intelligence 17 IOCs YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef4104e60bec9b76c4c170463700002f2fb0d7098fc0a5bd1e2947787b5319c0
SHA3-384 hash: 515aac69dd6851bb016b177db44526d56632aa05eb0b4981240d4e7d87b36c38f2775d7f3891e5736c8971e9738363dd
SHA1 hash: 032b036b96bf545135b4b691bdbe14daaea23c75
MD5 hash: 976460727f9c2227d1379fe75297500e
humanhash: fish-comet-black-wolfram
File name:SecuriteInfo.com.Win64.MalwareX-gen.32613123
Download: download sample
Signature CobaltStrike
Create hunting rule
File size:1'364'992 bytes
First seen:2025-08-06 14:21:39 UTC
Last seen:2025-08-06 15:24:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash c0f40c98f22848cc69188e507900c15f (1 x CobaltStrike)
ssdeep 24576:6Ir5CFRh4iKFuMJDxppHMDs+R7n0tGR4DCYc04Jn9R4xUH52YM2nlqy1zfci3UTg:Tr5kRh8M
Threatray 889 similar samples on MalwareBazaar
TLSH T1AC55682162A70FE4CA87C03DD21B9971E4D66087A383F4958FEB3199D8523F9BBF4590
TrID 48.7% (.EXE) Win64 Executable (generic) (10522/11/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter SecuriteInfoCom
Tags:CobaltStrike exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
91
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
cobaltstrike
Create hunting rule
ID:
1
File name:
SecuriteInfo.com.Win64.MalwareX-gen.32613123
Verdict:
Malicious activity
Analysis date:
2025-08-06 14:24:14 UTC
Tags:
cobaltstrike rust
Link:
https://app.any.run/tasks/38286993-14a8-4355-b86f-33db1577d411

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
CobaltStrikeBeacon
Create hunting rule
Link:
https://www.capesandbox.com/analysis/19259/
Detection(s):
SecuriteInfo.com.Win64.MalwareX-gen.32613123.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=689365291e8a59ee04e6755f
Tags:
ransomware emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt to an infection source
Sending a custom TCP request
Query of malicious DNS domain
Sending a TCP request to an infection source
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm base64 cobaltstrike microsoft_visual_cc threat
Link:
https://www.filescan.io/uploads/6893652c6d7bffa0a79f1661/reports/383eec8e-385d-4e0b-a0f6-24d80f55636d/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/ef4104e60bec9b76c4c170463700002f2fb0d7098fc0a5bd1e2947787b5319c0
Malware family:
Cobalt Strike
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e1aa0681-8148-4fe6-b27d-01a55ec77d1e
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ef4104e60bec9b76c4c170463700002f2fb0d7098fc0a5bd1e2947787b5319c0
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PDB Path PE (Portable Executable) Win 64 Exe x64
Link:
https://app.malva.re/file/976460727f9c2227d1379fe75297500e
Detection:
cobaltstrike
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ef4104e60bec9b76c4c170463700002f2fb0d7098fc0a5bd1e2947787b5319c0/
Threat name:
Win64.Trojan.Egairtigado
Create hunting rule
Status:
Malicious
First seen:
2025-08-06 12:45:59 UTC
File Type:
PE+ (Exe)
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=55aqjzql5snxnrgbobddoaaaf4x3bvyjr7aklpi6ffdxq62tdhaa._file
Verdict:
malicious
Label(s):
tetraloader
Create hunting rule
cobaltstrike
Create hunting rule
Similar samples:
2df98b623cd8011af0d609879eefbff634b1ff9a36566de1f98b33411905c604
CobaltStrike
720cb1059ddb3f22ab73de1b5730b3f491bdaa168c727f7cd85b76594b3003a1
CobaltStrike
858858c6e4d72ae3e369d5da8b37283be5425c2c271bb23929a6cc080452f9f9
CobaltStrike
e43d6309199e04b80a93fb0ccc44545c42fca0627d50496f356d01cd552061ec
CobaltStrike
ef4104e60bec9b76c4c170463700002f2fb0d7098fc0a5bd1e2947787b5319c0
CobaltStrike
error
CobaltStrike
+ 879 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/250806-rpstlssms7/
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/fbdb1941-edaf-4191-844a-5af18a529193
Unpacked files
SH256 hash:
ef4104e60bec9b76c4c170463700002f2fb0d7098fc0a5bd1e2947787b5319c0
MD5 hash:
976460727f9c2227d1379fe75297500e
SHA1 hash:
032b036b96bf545135b4b691bdbe14daaea23c75
Link:
https://www.unpac.me/results/53295d0c-25e6-458c-9e48-ca31fa2e20a0/
Malware family:
CobaltStrike
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ef4104e60bec/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ef4104e60bec9b76c4c170463700002f2fb0d7098fc0a5bd1e2947787b5319c0

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:CobaltStrikeBeacon
Create hunting rule
Author:ditekshen, enzo & Elastic
Description:Cobalt Strike Beacon Payload
Rule name:CobaltStrike_MZ_Launcher
Create hunting rule
Author:yara@s3c.za.net
Description:Detects CobaltStrike MZ header ReflectiveLoader launcher
Rule name:cobalt_strike_beacon_decrypted
Create hunting rule
Author:0x0d4y
Description:This rule detects cobalt strike decrypted beacons.
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:HKTL_CobaltStrike_Beacon_Strings
Create hunting rule
Author:Elastic
Description:Identifies strings used in Cobalt Strike Beacon DLL
Reference:https://www.elastic.co/blog/detecting-cobalt-strike-with-memory-signatures
Rule name:HKTL_CobaltStrike_SleepMask_Jul22
Create hunting rule
Author:CodeX
Description:Detects static bytes in Cobalt Strike 4.5 sleep mask function that are not obfuscated
Reference:https://codex-7.gitbook.io/codexs-terminal-window/blue-team/detecting-cobalt-strike/sleep-mask-kit-iocs
Rule name:HKTL_Win_CobaltStrike
Create hunting rule
Author:threatintel@volexity.com
Description:The CobaltStrike malware family.
Reference:https://www.volexity.com/blog/2021/05/27/suspected-apt29-operation-launches-election-fraud-themed-phishing-campaigns/
Rule name:MALW_cobaltrike
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Rule to detect CobaltStrike beacon
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.cobalt_strike
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:ProgramLanguage_Rust
Create hunting rule
Author:albertzsigovits
Description:Application written in Rust programming language
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Trojan_CobaltStrike_1787eef5
Create hunting rule
Author:Elastic Security
Description:CS shellcode variants
Rule name:Windows_Trojan_CobaltStrike_3dc22d14
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_CobaltStrike_663fc95d
Create hunting rule
Author:Elastic Security
Description:Identifies CobaltStrike via unidentified function code
Rule name:win_cobalt_strike_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.cobalt_strike.

File information

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

Web download

CobaltStrike

Executable exe ef4104e60bec9b76c4c170463700002f2fb0d7098fc0a5bd1e2947787b5319c0

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3597568/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/19259/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::CreateFiber
KERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetCommandLineW
KERNEL32.dll::GetCommandLineA
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileW

Comments