MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f4b3a494ec493d8dd7210e4719a2165fb0f2db3842b4a03b6f93fab6e4cc8d8a. 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


Gafgyt


Vendor detections: 8


Intelligence 8 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f4b3a494ec493d8dd7210e4719a2165fb0f2db3842b4a03b6f93fab6e4cc8d8a
SHA3-384 hash: 966f67b1b5ebe50932cceaf6c21fb62bc191d40dedf9f1ac1be7beb3135ba7b0e8a25cbf74d007e1f7dbe1a15e328ac8
SHA1 hash: 31450b55e3f5fdf938cec8289309e6173d22581a
MD5 hash: 06e5b568bf58daa0cdd54fe3ce010cb8
humanhash: illinois-fourteen-social-november
File name:cron
Download: download sample
Signature Gafgyt
Create hunting rule
File size:88'583 bytes
First seen:2025-09-06 18:32:30 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:rhUB/XYuBXJWiOV7NTEO07Kq6FUIwU7D47otwHUIe:1afYOfwNTZ0ObQUqotl
TLSH T12983099BB61D0BABC5975BB12CB737F19B69ED6002A211C4910EFF9007B29702532F75
telfhash t17511ce52a4fa8a6c5ef2542098fc16741aa272273162be706f5cc1849c37002b629fce
Magika elf
Reporter abuse_ch
Tags:elf gafgyt

Intelligence

File Origin
# of uploads :
1
# of downloads :
78
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.30395.LC.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.29227.LC.UNOFFICIAL
Create hunting rule

Unix.Dropper.Mirai-7138857-0
Create hunting rule

Unix.Dropper.Mirai-7139232-0
Create hunting rule

Unix.Trojan.Gafgyt-7643791-0
Create hunting rule

Unix.Trojan.Mirai-7688276-0
Create hunting rule

Unix.Trojan.Gafgyt-9875100-0
Create hunting rule

Unix.Trojan.Gafgyt-9876192-0
Create hunting rule

Unix.Trojan.Gafgyt-111
Create hunting rule

Unix.Trojan.Mirai-5607483-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sends data to a server
Receives data from a server
Connection attempt
Runs as daemon
Substitutes an application name
Performs a bruteforce attack in the network
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
gcc lolbin remote
Link:
https://www.filescan.io/uploads/68bc7f6537c25fcf12d5c963/reports/8e15430f-5cff-4857-b54f-a536b13da486/overview
Verdict:
Malicious
File Type:
elf.32.be
First seen:
2025-09-06T16:02:00Z UTC
Last seen:
2025-09-06T16:02:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/f4b3a494ec493d8dd7210e4719a2165fb0f2db3842b4a03b6f93fab6e4cc8d8a/results?tab=lookup
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/a4473acd-1708-4f52-8880-b8a38cdf91b4
Behavior Graph:
Download SVG
%3 guuid=f28bf4d0-1a00-0000-5cd9-af68660c0000 pid=3174 /usr/bin/sudo guuid=948596d4-1a00-0000-5cd9-af68670c0000 pid=3175 /tmp/sample.bin guuid=f28bf4d0-1a00-0000-5cd9-af68660c0000 pid=3174->guuid=948596d4-1a00-0000-5cd9-af68670c0000 pid=3175 execve
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/3476c418-0f99-4221-b449-a4b24a017191
Result
Threat name:
Gafgyt
Create hunting rule
Detection:
malicious
Classification:
spre.troj
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1772427
Signature
Antivirus / Scanner detection for submitted sample
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Opens /proc/net/* files useful for finding connected devices and routers
Suricata IDS alerts for network traffic
Yara detected Gafgyt
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1772427 Sample: cron.elf Startdate: 06/09/2025 Architecture: LINUX Score: 92 22 157.164.186.177, 23 VERIXI-BACKUPNETWORKBE Belgium 2->22 24 100.100.100.100, 23 UUNETUS Reserved 2->24 26 98 other IPs or domains 2->26 28 Suricata IDS alerts for network traffic 2->28 30 Found malware configuration 2->30 32 Malicious sample detected (through community Yara rule) 2->32 34 3 other signatures 2->34 9 cron.elf 2->9         started        12 python3.8 dpkg 2->12         started        14 python3.8 dpkg 2->14         started        signatures3 process4 signatures5 36 Opens /proc/net/* files useful for finding connected devices and routers 9->36 16 cron.elf 9->16         started        process6 process7 18 cron.elf 16->18         started        process8 20 cron.elf 18->20         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/f4b3a494ec493d8dd7210e4719a2165fb0f2db3842b4a03b6f93fab6e4cc8d8a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f4b3a494ec493d8dd7210e4719a2165fb0f2db3842b4a03b6f93fab6e4cc8d8a/
Threat name:
Linux.Trojan.Gafgyt
Create hunting rule
Status:
Malicious
First seen:
2025-09-06 18:39:31 UTC
File Type:
ELF32 Big (Exe)
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6sz2jfhmje6y3vzbbzdrtiqwl6ypfwzyik2kao3psp5lnzgmrwfa._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
linux
Link:
https://tria.ge/reports/250906-w8tbpsdk51/
Verdict:
Malicious
Tags:
trojan gafgyt Unix.Dropper.Mirai-7138857-0
YARA:
Linux_Trojan_Gafgyt_fb14e81f
Link:
https://app.threat.zone/submission/f6eb4344-0094-4e14-9fe2-cb4dff6a6618
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/f4b3a494ec493d8dd7210e4719a2165fb0f2db3842b4a03b6f93fab6e4cc8d8a

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:botnet_plaintext_c2
Create hunting rule
Author:cip
Description:Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.
Rule name:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:Linux_Gafgyt_Generic
Create hunting rule
Author:albertzsigovits
Description:Generic Approach to Mirai/Gafgyt samples
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
Rule name:Linux_Trojan_Gafgyt_fb14e81f
Create hunting rule
Author:Elastic Security
Reference:0fd07e6068a721774716eb4940e2c19faef02d5bdacf3b018bf5995fa98a3a27
Rule name:Mal_LNX_Gafgyt_Botnet_ELF
Create hunting rule
Author:Phatcharadol Thangplub
Description:Use to detect Gafgyt botnet, and there variants.
Rule name:setsockopt
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for setsockopt() red flags
Rule name:Tsunami_Backdoor
Create hunting rule
Author:@is_henderson
Description:Tsunami Backdoor
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags

File information

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

Web download

Gafgyt

elf f4b3a494ec493d8dd7210e4719a2165fb0f2db3842b4a03b6f93fab6e4cc8d8a

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3618697/
  
Delivery method
Distributed via web download

Comments