MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a1c0b48199e8a47fe50c4097d86e5f43a1a1c9a9c1f7f3606ffa0d45bb4a2eb3. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a1c0b48199e8a47fe50c4097d86e5f43a1a1c9a9c1f7f3606ffa0d45bb4a2eb3
SHA3-384 hash: c0b1113e1d2667ab151c02f94316467c9983fc8d747384236a03475a8577b4c87366ba2fe145ce7af247c31d2a1ff75e
SHA1 hash: 9b5d9233bbc22cc5a7cdaa858ae365b425a02171
MD5 hash: 0e2c42cc4fb874757cee08ed29b134b4
humanhash: zebra-mountain-sierra-pluto
File name:na
Download: download sample
Signature Rekoobe
Create hunting rule
File size:86'208 bytes
First seen:2024-10-14 15:28:14 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 1536:QahOrhUNuV9NnkqnhhWMC8tOadBvwZoXRUqHekyN/1H5xuM8b/3d:Q5JxkqnhhWMhtOqcoXRUq+xN/1Zx2r3
TLSH T11A839E43B6668DBFC845C6304F4FA02AA933BD14EF66321B35401B64392FB1A7F29765
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 :
99
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
Unix.Trojan.Backdoor-6678692-0
Create hunting rule

Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
backdoor gcc rat
Link:
https://www.filescan.io/uploads/670d38c4273403a3ef0f3fd6/reports/dac96629-82b2-4d75-aa32-72c936ccc48b/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
not packed
Botnet:
unknown
Number of open files:
18
Number of processes launched:
2
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/a1c0b48199e8a47fe50c4097d86e5f43a1a1c9a9c1f7f3606ffa0d45bb4a2eb3
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Result
Verdict:
MALICIOUS
Malware family:
PasteMiner
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/efa48e01-ee77-46da-a94f-9ebacb8aa373
Result
Threat name:
Rekoobe
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/1533440
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: 1533440 Sample: na.elf Startdate: 14/10/2024 Architecture: LINUX Score: 88 21 27.124.45.146, 12345, 43700 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:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a1c0b48199e8a47fe50c4097d86e5f43a1a1c9a9c1f7f3606ffa0d45bb4a2eb3
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a1c0b48199e8a47fe50c4097d86e5f43a1a1c9a9c1f7f3606ffa0d45bb4a2eb3/
Threat name:
Linux.Backdoor.Rekoobe
Create hunting rule
Status:
Malicious
First seen:
2024-10-14 15:29:06 UTC
File Type:
ELF64 Little (Exe)
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uhaljamz5csh7zimicl5q3s7ioq2dsnjyh37gydp7igulo2kf2zq._file
Result
Malware family:
rekoobe
Create hunting rule
Score:
  10/10
Tags:
family:rekoobe backdoor discovery linux trojan
Link:
https://tria.ge/reports/241014-swwphs1gqb/
Behaviour
Reads runtime system information
Writes file to tmp directory
Executes dropped EXE
Rekoobe
Malware Config
C2 Extraction:
27.124.45.146:12345
Verdict:
Malicious
Tags:
backdoor trojan rekoobe
YARA:
EXT_HKTL_MAL_TinyShell_Backdoor Linux_Trojan_Rekoobe_de9e7bdf
Link:
https://app.threat.zone/submission/70356d1c-333a-4da7-9789-84b0b79f3f91
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/a1c0b48199e8a47fe50c4097d86e5f43a1a1c9a9c1f7f3606ffa0d45bb4a2eb3

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_Backdoor_NoodRAT
Create hunting rule
Author:ReversingLabs
Description:Yara rule that detects NoodRAT backdoor.
Rule name:Linux_Trojan_Rekoobe_de9e7bdf
Create hunting rule
Author:Elastic Security
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
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 a1c0b48199e8a47fe50c4097d86e5f43a1a1c9a9c1f7f3606ffa0d45bb4a2eb3

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3234677/
  
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