MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d88a5f1d23da79bccafc1cd797d331d211a0106eb5494d1ca88600edb1ed16d9. 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: 8


Intelligence 8 IOCs YARA 24 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d88a5f1d23da79bccafc1cd797d331d211a0106eb5494d1ca88600edb1ed16d9
SHA3-384 hash: 28d3d2045ae4ab8618594dd8fe28b57aadd9c68694b92cf43c62c5653617429950e3b758e86a983566cdb47fa8208ae8
SHA1 hash: 09b58a119fc96efea20c4632c7bf011ae8d08010
MD5 hash: 5caef9f0df262c9488206d3be974c0ab
humanhash: connecticut-harry-illinois-friend
File name:d
Download: download sample
Signature CobaltStrike
Create hunting rule
File size:7'135'416 bytes
First seen:2025-12-07 11:01:49 UTC
Last seen:2025-12-08 00:39:59 UTC
File type: elf
MIME type:application/x-executable
ssdeep 49152:puY951LBe0C06CipU6nKy1wzmAl+Sgjmwfhunp+oqBT+OpNTY03AjZ7KX+l4VPKn:p3ReG62qzmYunMoqSKNTwGrKZEc
TLSH T1F1764A03EC9515E9C1F9A1348A629253BA717C495B3127D33BA0F3782F73BD0AAB9750
telfhash t10b32467159bc74b4b6aada20b3a2b574953719a563f838f05023ed90ffc1e801ce6c27
gimphash e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
TrID 50.1% (.) ELF Executable and Linkable format (Linux) (4022/12)
49.8% (.O) ELF Executable and Linkable format (generic) (4000/1)
Magika elf
Reporter abuse_ch
Tags:CobaltStrike elf

Intelligence

File Origin
# of uploads :
3
# of downloads :
26
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm base64 beacon cobalt cobalt cobaltstrike crypto golang
Link:
https://www.filescan.io/uploads/69355ec3d12d1c79d42a3ec9/reports/2c9238ad-00b7-491d-84f1-91b256227fc9/overview
Result
Gathering data
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/2573106b-06af-4ccc-92e9-f2477db5a911
Result
Threat name:
n/a
Detection:
malicious
Classification:
n/a
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1828307
Signature
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Behaviour
Behavior Graph:
Download SVG
Score:
89%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/d88a5f1d23da79bccafc1cd797d331d211a0106eb5494d1ca88600edb1ed16d9
Detection:
cobaltstrike
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d88a5f1d23da79bccafc1cd797d331d211a0106eb5494d1ca88600edb1ed16d9/
Threat name:
Linux.Trojan.CobaltStrike
Create hunting rule
Status:
Malicious
First seen:
2025-12-07 11:02:34 UTC
File Type:
ELF64 Little (Exe)
AV detection:
10 of 36 (27.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3cff6hjd3j43zsx4dtlzpuzr2ii2aedowveu2hfiqyao3mpnc3mq._file
Result
Malware family:
n/a
Score:
  3/10
Tags:
discovery linux
Link:
https://tria.ge/reports/251207-m5akra1jbz/
Behaviour
Enumerates kernel/hardware configuration
Reads runtime system information
Verdict:
Unknown
Tags:
red_team_tool cobalt_strike
YARA:
CobaltStrikeBeacon
Link:
https://app.threat.zone/submission/45651d93-7ecb-42ea-a68c-ca99aeeeb549
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/d88a5f1d23da79bccafc1cd797d331d211a0106eb5494d1ca88600edb1ed16d9

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_C2_Encoded_XOR_Config_Indicator
Create hunting rule
Author:yara@s3c.za.net
Description:Detects CobaltStrike C2 encoded profile configuration
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:DetectGoMethodSignatures
Create hunting rule
Author:Wyatt Tauber
Description:Detects Go method signatures in unpacked Go binaries
Rule name:Detect_Go_GOMAXPROCS
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects Go binaries by the presence of runtime.GOMAXPROCS in the runtime metadata
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:F01_s1ckrule
Create hunting rule
Author:s1ckb017
Rule name:GoBinTest
Create hunting rule
Rule name:golang
Create hunting rule
Rule name:golang_binary_string
Create hunting rule
Description:Golang strings present
Rule name:golang_duffcopy_amd64
Create hunting rule
Rule name:identity_golang
Create hunting rule
Author:Eric Yocam
Description:find Golang malware
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:ProgramLanguage_Golang
Create hunting rule
Author:albertzsigovits
Description:Application written in Golang programming language
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:SUSP_XORed_Mozilla_Oct19
Create hunting rule
Author:Florian Roth
Description:Detects suspicious single byte XORed keyword 'Mozilla/5.0' - it uses yara's XOR modifier and therefore cannot print the XOR key. You can use the CyberChef recipe linked in the reference field to brute force the used key.
Reference:https://gchq.github.io/CyberChef/#recipe=XOR_Brute_Force()
Rule name:SUSP_XORed_Mozilla_RID2DB4
Create hunting rule
Author:Florian Roth
Description:Detects suspicious XORed keyword - Mozilla/5.0
Reference:Internal Research
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

Web download

CobaltStrike

elf d88a5f1d23da79bccafc1cd797d331d211a0106eb5494d1ca88600edb1ed16d9

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3728624/
  
Delivery method
Distributed via web download

Comments