MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a87ffe7c1c6be9d22ab8cc96b83fc52ebed8b8d4f424ff46cb366fda9ba269d2. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a87ffe7c1c6be9d22ab8cc96b83fc52ebed8b8d4f424ff46cb366fda9ba269d2
SHA3-384 hash: 9e99989a8917a76d384ef358175b12b9a6a7d8d5f6cb4a222d48e092bb29d8c0a12149e8b17e4eba5dc5450f18c34dcc
SHA1 hash: ffc440af682d50ccb64b38f819659ae8000c13d3
MD5 hash: e9536706c95af9f541fddd3138129d68
humanhash: bluebird-one-india-skylark
File name:x86_64
Download: download sample
Signature CoinMiner
Create hunting rule
File size:1'837'732 bytes
First seen:2025-07-16 00:19:54 UTC
Last seen:2025-07-16 04:16:54 UTC
File type: elf
MIME type:application/x-sharedlib
ssdeep 49152:XGQGWysrjj7HgrsQ6H5G7FGiSxDmk99jBJRLJUWo0R1XlBbB:yWyKf7Ar96Hk7FGTmk9FrV20v5
TLSH T17785332AD5922EC14970A3F774607F79C07EC641187B68C3D9A1A6EF7B1FEA0F612490
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:CoinMiner elf

Intelligence

File Origin
# of uploads :
2
# of downloads :
39
Origin country :
DE DE
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Collects information on the RAM
Creating a file
Changes the time when the file was created, accessed, or modified
Collects information on the CPU
Launching a process
Kills processes
Changes access rights for a written file
Runs as daemon
Substitutes an application name
Creates or modifies files in /cron to set up autorun
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/6876f0427bc45bdee1ad8ef4/reports/1d6cb50a-99c3-42bd-8b37-6ddf0c9c3f3a/overview
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
true
Architecture:
x86
Packer:
UPX
Botnet:
unknown
Number of open files:
126
Number of processes launched:
8
Processes remaning?
true
Remote TCP ports scanned:
not identified
Full report:
https://elfdigest.com/brief/a87ffe7c1c6be9d22ab8cc96b83fc52ebed8b8d4f424ff46cb366fda9ba269d2
Behaviour
Anti-VM
Process Renaming
Information Gathering
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/b1f65a17-8752-4397-96ee-c283f774603d
Result
Threat name:
Xmrig
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1737609
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)
Multi AV Scanner detection for submitted file
Opens /sys/class/net/* files useful for querying network interface information
Sample is packed with UPX
Sample tries to persist itself using cron
Tries to load the MSR kernel module used for reading/writing to CPUs model specific register
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1737609 Sample: x86_64.elf Startdate: 16/07/2025 Architecture: LINUX Score: 92 44 Malicious sample detected (through community Yara rule) 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 Yara detected Xmrig cryptocurrency miner 2->48 50 Sample is packed with UPX 2->50 8 x86_64.elf 2->8         started        process3 signatures4 60 Found strings related to Crypto-Mining 8->60 11 x86_64.elf 8->11         started        process5 signatures6 62 Opens /sys/class/net/* files useful for querying network interface information 11->62 14 x86_64.elf sh 11->14         started        16 x86_64.elf sh 11->16         started        18 x86_64.elf sh 11->18         started        20 2 other processes 11->20 process7 process8 22 sh crontab 14->22         started        26 sh crontab 14->26         started        28 sh 14->28         started        30 sh iptables 16->30         started        32 sh iptables 16->32         started        38 2 other processes 16->38 34 sh iptables 18->34         started        36 sh iptables 18->36         started        40 2 other processes 20->40 file9 42 /var/spool/cron/crontabs/tmp.hJ2oCN, ASCII 22->42 dropped 52 Sample tries to persist itself using cron 22->52 54 Executes the "crontab" command typically for achieving persistence 22->54 56 Executes the "iptables" command to insert, remove and/or manipulate rules 34->56 58 Tries to load the MSR kernel module used for reading/writing to CPUs model specific register 40->58 signatures10
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/a87ffe7c1c6be9d22ab8cc96b83fc52ebed8b8d4f424ff46cb366fda9ba269d2
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a87ffe7c1c6be9d22ab8cc96b83fc52ebed8b8d4f424ff46cb366fda9ba269d2/
Threat name:
Linux.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-07-16 00:20:21 UTC
File Type:
ELF64 Little (SO)
AV detection:
15 of 23 (65.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vb7747a4npu5ekvyzsllqp6ff27nrogu6qsp6rwlgzx5vg5cnhja._file
Result
Malware family:
xmrig
Create hunting rule
Score:
  10/10
Tags:
family:xmrig antivm defense_evasion discovery execution linux miner persistence privilege_escalation upx
Link:
https://tria.ge/reports/250716-amxaksgn2t/
Behaviour
Enumerates kernel/hardware configuration
Reads runtime system information
Changes its process name
Checks CPU configuration
Reads CPU attributes
Checks hardware identifiers (DMI)
Creates/modifies Cron job
Enumerates running processes
Reads hardware information
Reads network interface configuration
Creates Raw socket
Flushes firewall rules
Unexpected DNS network traffic destination
Contacts a large (1158729) amount of remote hosts
Creates a large amount of network flows
XMRig Miner payload
Xmrig family
xmrig
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/9cb8b95c-0f0e-44c5-8a3f-650a6101fdd7
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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: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 a87ffe7c1c6be9d22ab8cc96b83fc52ebed8b8d4f424ff46cb366fda9ba269d2

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3568519/
  
Delivery method
Distributed via web download

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