MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bf45cffbc11cf408e600442b7cb87dc28f56b7d165781c499f9fd1a148cc5ff4. 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


CoinMiner


Vendor detections: 10


Intelligence 10 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bf45cffbc11cf408e600442b7cb87dc28f56b7d165781c499f9fd1a148cc5ff4
SHA3-384 hash: 9167747fd057ba627aaaf6ce5925580c58d27c58a6f0128a7e0ca9c784c4716dd2f91490747b7d94d11b91175df6616e
SHA1 hash: 4f417fcf288220efee800e58a9f27e4374cea4da
MD5 hash: a1adf45d4491d7075c2329d0f132792b
humanhash: violet-west-winter-hotel
File name:arm7
Download: download sample
Signature CoinMiner
Create hunting rule
File size:1'165'380 bytes
First seen:2025-02-02 20:26:47 UTC
Last seen:Never
File type: elf
MIME type:application/x-sharedlib
ssdeep 24576:mAndAaknFA/EEhHkaDLqfdDojUPw3hjFXLZ15caFS1vp:m1tn+/thHkofjR10YM
TLSH T1BD453377380872C0DF0117FC28A5293A68F9293E2ECB69E6482557DD5EF5041B73A1BB
telfhash t1be9002d04fa0085945d05430d35cf5318f031fb13cee28880670512514a9491642a820
Magika elf
Reporter abuse_ch
Tags:CoinMiner elf

Intelligence

File Origin
# of uploads :
1
# of downloads :
155
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Other.Malware-gen.22401.17277.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=679fd5232dcee78dd819140alinux22vpnfull_triage
Tags:
n/a
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Connection attempt
Creating a file
Runs as daemon
DNS request
Collects information on the RAM
Changes access rights for a written file
Kills processes
Receives data from a server
Sends data to a server
Changes the time when the file was created, accessed, or modified
Collects information on the CPU
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
miner monero packed upx xmrig
Link:
https://www.filescan.io/uploads/679fd5222681e793d8ab000d/reports/61f9aba5-d954-4f13-a111-56da8a461c58/overview
Result
Verdict:
SUSPICIOUS
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/808c6aef-2a68-4d7b-975d-202065129207
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.evad.mine
Score:
76 / 100
Link:
https://www.joesandbox.com/analysis/1605146
Signature
Executes the "crontab" command typically for achieving persistence
Executes the "iptables" command to insert, remove and/or manipulate rules
Found strings related to Crypto-Mining
Malicious sample detected (through community Yara rule)
Sample is packed with UPX
Sample tries to persist itself using cron
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1605146 Sample: arm7.elf Startdate: 02/02/2025 Architecture: LINUX Score: 76 37 Malicious sample detected (through community Yara rule) 2->37 39 Yara detected Xmrig cryptocurrency miner 2->39 41 Sample is packed with UPX 2->41 8 arm7.elf 2->8         started        process3 signatures4 49 Found strings related to Crypto-Mining 8->49 11 arm7.elf 8->11         started        process5 process6 13 arm7.elf sh 11->13         started        15 arm7.elf sh 11->15         started        17 arm7.elf sh 11->17         started        19 5 other processes 11->19 process7 21 sh crontab 13->21         started        25 sh crontab 13->25         started        27 sh 13->27         started        29 sh iptables 15->29         started        31 sh which 17->31         started        33 sh which 19->33         started        file8 35 /var/spool/cron/crontabs/tmp.7RhEG6, ASCII 21->35 dropped 43 Sample tries to persist itself using cron 21->43 45 Executes the "crontab" command typically for achieving persistence 21->45 47 Executes the "iptables" command to insert, remove and/or manipulate rules 29->47 signatures9
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/bf45cffbc11cf408e600442b7cb87dc28f56b7d165781c499f9fd1a148cc5ff4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bf45cffbc11cf408e600442b7cb87dc28f56b7d165781c499f9fd1a148cc5ff4/
Threat name:
Linux.Hacktool.ZkarletFlash
Create hunting rule
Status:
Malicious
First seen:
2025-02-02 20:27:15 UTC
File Type:
ELF32 Little (SO)
AV detection:
11 of 24 (45.83%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=x5c4766bdt2arzqaiqvxzod5ykhvnn6rmv4bysm7t7i2csgml72a._file
Result
Malware family:
xmrig
Create hunting rule
Score:
  10/10
Tags:
family:xmrig antivm discovery execution miner persistence privilege_escalation upx
Link:
https://tria.ge/reports/250202-y8gzsaxlby/
Behaviour
Enumerates kernel/hardware configuration
Reads runtime system information
Changes its process name
Checks CPU configuration
Reads CPU attributes
Creates/modifies Cron job
Enumerates running processes
Unexpected DNS network traffic destination
Contacts a large (1386329) amount of remote hosts
Creates a large amount of network flows
XMRig Miner payload
Xmrig family
xmrig
Verdict:
Informative
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/682c366b-d8cc-4c38-a9dc-b80f2aeb1f03
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/bf45cffbc11cf408e600442b7cb87dc28f56b7d165781c499f9fd1a148cc5ff4

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:elf_arm_mips_ko_so
Create hunting rule
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:SUSP_ELF_LNX_UPX_Compressed_File
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a suspicious ELF binary with UPX compression
Reference:Internal Research
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
Rule name:upx_packed_elf_v1
Create hunting rule
Author:RandomMalware

File information

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

Web download

CoinMiner

elf bf45cffbc11cf408e600442b7cb87dc28f56b7d165781c499f9fd1a148cc5ff4

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3138430/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3423900/

Comments