MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 fb1f408e089ca5346d31e07ab1d821b1b19f1488ed8eaad587f421e2d3689fa4. 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
| SHA256 hash: | fb1f408e089ca5346d31e07ab1d821b1b19f1488ed8eaad587f421e2d3689fa4 |
|---|---|
| SHA3-384 hash: | 4424cf150576b30f51308e343e471dd029ea1f5a8dead93db7ab283f7229cebe2449fd92c80d2cc305eaa986192e8c91 |
| SHA1 hash: | bfe56a660faa112a2bb34d0dfb2d63bfb177e4d7 |
| MD5 hash: | b634779963c7f73b0ff26790077ed54b |
| humanhash: | dakota-enemy-pennsylvania-december |
| File name: | kworkerd |
| Download: | download sample |
| Signature | CoinMiner |
| File size: | 105'376 bytes |
| First seen: | 2026-06-25 20:00:42 UTC |
| Last seen: | 2026-06-26 10:15:28 UTC |
| File type: | elf |
| MIME type: | application/x-sharedlib |
| ssdeep | 3072:Y8qwk3C1Y1J5GEfzfJzsDt/AsgPocV5B/ThUC8R8fL:nq932YrfzfVW1+Dz/Tx8R8T |
| TLSH | T13BA31201574ACE15CD3CB6321BC4C1C779B79A7BEA7B9EA22D6D1D0D18C2E1D6258F02 |
| 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 :
5
# of downloads :
80
Origin country :
DEVendor Threat Intelligence
No detections
Result
Verdict:
Malware
Maliciousness:
Behaviour
DNS request
Opens a port
Collects information on the CPU
Creating a file in the %temp% directory
Changes access rights for a written file
Creating a file
Sends data to a server
Connection attempt
Receives data from a server
Runs as daemon
Sets a written file as executable
Deleting a recently created file
Launching a process
Manages services
Changes the time when the file was created, accessed, or modified
Creates or modifies files in /cron to set up autorun
Substitutes an application name
Deleting of the original file
Verdict:
Unknown
Threat level:
0/10
Confidence:
100%
Verdict:
Malicious
Uses P2P?:
false
Uses anti-vm?:
false
Architecture:
x86
Packer:
custom
Botnet:
unknown
Number of open files:
1
Number of processes launched:
1
Processes remaning?
false
Remote TCP ports scanned:
not identified
Full report:
Behaviour
no suspicious findings
Botnet C2s
TCP botnet C2(s):
not identified
UDP botnet C2(s):
not identified
Verdict:
Malicious
File Type:
elf.64.le
First seen:
2026-06-25T17:18:00Z UTC
Last seen:
2026-06-26T20:53:00Z UTC
Hits:
~10
Status:
terminated
Behavior Graph:
Verdict:
Unknown
Result
Threat name:
Xmrig
Detection:
malicious
Classification:
troj.spyw.evad.mine
Score:
96 / 100
Signature
Antivirus detection for dropped file
Drops invisible ELF files
Executes itself again with its parent PID as an argument (indicative of hampering debugging)
Executes the "crontab" command typically for achieving persistence
Executes the "nc" (netcat) command used to establish arbitrary TCP or UDP connections and listens
Found strings related to Crypto-Mining
Opens /sys/class/net/* files useful for querying network interface information
Performs DNS TXT record lookups
Sample deletes itself
Sample tries to persist itself using cron
Searches for CPU information (likely indicative of DDoS capability)
Yara detected Xmrig cryptocurrency miner
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
ELF
Threat name:
Linux.Trojan.Generic
Status:
Suspicious
First seen:
2026-06-25 18:27:32 UTC
File Type:
ELF64 Little (SO)
AV detection:
9 of 37 (24.32%)
Threat level:
5/5
Detection(s):
Suspicious file
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
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