MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e4b0d2775f8a683210926ea49f8a0f63a017205268f49d7aca667e5c86130a7e. 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: 13


Intelligence 13 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e4b0d2775f8a683210926ea49f8a0f63a017205268f49d7aca667e5c86130a7e
SHA3-384 hash: cf113f9fa296dc8632363f497fa23760f860b0da87513396499af8db3c8d67b8c14e5b7514db100138abd245c58c6db6
SHA1 hash: 025a894b1761f2520f51bfaff538e13e5052ffcf
MD5 hash: 266248b3beb83d24ff3aa55a981b392f
humanhash: low-delaware-sad-kansas
File name:x86.bin
Download: download sample
Signature Rekoobe
Create hunting rule
File size:64'444 bytes
First seen:2024-11-07 15:26:56 UTC
Last seen:2025-01-16 13:44:53 UTC
File type: elf
MIME type:application/x-executable
ssdeep 768:yqDTLM5kBecslWt0KnGCJgDLyo/xDYADEcrE7ORS4AYahoie/:yqnL6HyhXgD+oiAoQQORS4AKi
TLSH T15E533909EA47D0F1CC2A0931568BE56F6A797070FC2E9F12EBE40FB6CD17A816714792
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:103-43-18-71--88 elf Rekoobe

Intelligence

File Origin
# of uploads :
4
# of downloads :
87
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Unix.Trojan.CryptoMiner-6742844-0
Create hunting rule

Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=672cdc5549e92a05dde3e7celinux22vpnfull_triage
Tags:
malware
Result
Verdict:
Malware
Maliciousness:

Behaviour
Runs as daemon
Connection attempt
Receives data from a server
DNS request
Collects information on the OS
Sends data to a server
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
backdoor gcc masquerade olyx packed rekoobe
Link:
https://www.filescan.io/uploads/672cdc4e63e1de74c3240c38/reports/87fb1bcc-4602-4904-bfa3-e5afeb1d2896/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
22
Number of processes launched:
2
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/e4b0d2775f8a683210926ea49f8a0f63a017205268f49d7aca667e5c86130a7e
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/d5e23995-3b47-4f03-8816-ba2f04154871
Result
Threat name:
Rekoobe
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1551367
Signature
Antivirus / Scanner detection for submitted sample
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Rekoobe
Behaviour
Behavior Graph:
Download SVG
Score:
98%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/e4b0d2775f8a683210926ea49f8a0f63a017205268f49d7aca667e5c86130a7e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e4b0d2775f8a683210926ea49f8a0f63a017205268f49d7aca667e5c86130a7e/
Threat name:
Linux.Trojan.Rekoobe
Create hunting rule
Status:
Malicious
First seen:
2024-08-20 17:03:00 UTC
File Type:
ELF32 Little (Exe)
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4syne527rjudeeesn2sj7cqpmoqboicsnd2j26wkmz7fzbqtbj7a._file
Result
Malware family:
rekoobe
Create hunting rule
Score:
  10/10
Tags:
family:rekoobe linux
Link:
https://tria.ge/reports/241107-svrdeavdna/
Malware Config
C2 Extraction:
yz.flashclouddns.com:62111
Verdict:
Malicious
Tags:
backdoor trojan rekoobe Unix.Trojan.CryptoMiner-6742844-0
YARA:
EXT_HKTL_MAL_TinyShell_Backdoor Linux_Trojan_Rekoobe_7f7aba78
Link:
https://app.threat.zone/submission/24a54136-b27c-47d7-9cab-ba6fea35061b
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/e4b0d2775f8a683210926ea49f8a0f63a017205268f49d7aca667e5c86130a7e

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 e4b0d2775f8a683210926ea49f8a0f63a017205268f49d7aca667e5c86130a7e

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3199821/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3280699/

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