MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 28382231cbfe3bf7827c1a874b3d7f18717020ced516b747a2a1bb7598eabe0b. 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


Rekoobe


Vendor detections: 12


Intelligence 12 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 28382231cbfe3bf7827c1a874b3d7f18717020ced516b747a2a1bb7598eabe0b
SHA3-384 hash: eec2b77fb0ec7c4b3bcdbfa22cdbf81065144dc66122f781577d24adc96358d4ff437b93c05ade0155e8554ac44e3a7d
SHA1 hash: 53abbdd515a31b32095a116fb7db702ddb487ccd
MD5 hash: 1c1b816049d66dbb9cc031b760cba438
humanhash: wyoming-king-tennis-artist
File name:na
Download: download sample
Signature Rekoobe
Create hunting rule
File size:64'444 bytes
First seen:2024-10-14 15:28:13 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 768:yqDTLM5kBecslWt0KnGCJgDLyo/xDYADEcrE7ORS4AYahoiL:yqnL6HyhXgD+oiAoQQORS4AKi
TLSH T1D1533909EA47D0F1CC2A0931568BE56F6A797070FC2E9F12EBE40FB6CD17A816714792
telfhash t1a4017687d93e47988ad65d24dcac53e38183d62a90669b04ff29ccc048ae44af218c8f
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:elf Rekoobe

Intelligence

File Origin
# of uploads :
1
# of downloads :
100
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Unix.Trojan.CryptoMiner-6742844-0
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
backdoor gcc olyx packed rijndael
Link:
https://www.filescan.io/uploads/670d38c3d185a09d0eb54ffe/reports/b8e3adf2-671d-41da-b22b-8443d2992a91/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
27.124.45.146:9998
Number of open files:
20
Number of processes launched:
2
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/28382231cbfe3bf7827c1a874b3d7f18717020ced516b747a2a1bb7598eabe0b
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Result
Verdict:
MALICIOUS
Malware family:
Gh0st RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/08bb19e4-89dc-4b3d-bda3-db63fc505346
Result
Threat name:
Rekoobe
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1533441
Signature
Connects to many ports of the same IP (likely port scanning)
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample deletes itself
Yara detected Rekoobe
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1533441 Sample: na.elf Startdate: 14/10/2024 Architecture: LINUX Score: 88 21 27.124.45.146, 12345, 55238, 55242 BCPL-SGBGPNETGlobalASNSG Singapore 2->21 23 daisy.ubuntu.com 2->23 25 Found malware configuration 2->25 27 Malicious sample detected (through community Yara rule) 2->27 29 Multi AV Scanner detection for submitted file 2->29 31 4 other signatures 2->31 9 na.elf 2->9         started        signatures3 process4 process5 11 na.elf 9->11         started        file6 19 /tmp/CCCCCCCC, ELF 11->19 dropped 33 Sample deletes itself 11->33 15 na.elf CCCCCCCC 11->15         started        signatures7 process8 process9 17 CCCCCCCC 15->17         started       
Score:
98%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/28382231cbfe3bf7827c1a874b3d7f18717020ced516b747a2a1bb7598eabe0b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/28382231cbfe3bf7827c1a874b3d7f18717020ced516b747a2a1bb7598eabe0b/
Threat name:
Linux.Backdoor.Rekobee
Create hunting rule
Status:
Malicious
First seen:
2024-10-14 15:29:13 UTC
File Type:
ELF32 Little (Exe)
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fa4cemol7y57pat4dkduwpl7dbyxaigo2ullor5cug5xlghkxyfq._file
Result
Malware family:
rekoobe
Create hunting rule
Score:
  10/10
Tags:
family:rekoobe linux
Link:
https://tria.ge/reports/241014-swwphs1gqa/
Malware Config
C2 Extraction:
27.124.45.146:12345
Verdict:
Malicious
Tags:
backdoor trojan rekoobe
YARA:
EXT_HKTL_MAL_TinyShell_Backdoor Linux_Trojan_Rekoobe_7f7aba78
Link:
https://app.threat.zone/submission/a517fe98-4e81-4d66-bf57-68db562219b7
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/28382231cbfe3bf7827c1a874b3d7f18717020ced516b747a2a1bb7598eabe0b

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:Linux_Trojan_Rekoobe_7f7aba78
Create hunting rule
Author:Elastic Security
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:Olyx
Create hunting rule
Author:Seth Hardy
Description:Olyx
Rule name:OlyxCode
Create hunting rule
Author:Seth Hardy
Description:Olyx code tricks
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

File information

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

Web download

Rekoobe

elf 28382231cbfe3bf7827c1a874b3d7f18717020ced516b747a2a1bb7598eabe0b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3234678/
  
Delivery method
Distributed via web download

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_PIEMissing Position-Independent Executable (PIE) Protectionhigh

Comments