MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 40c31db83861778b1c811b78c2d2b9aa97ed22b24ebb04fb0803f1c599787e39. 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


Threat unknown


Vendor detections: 8


Intelligence 8 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 40c31db83861778b1c811b78c2d2b9aa97ed22b24ebb04fb0803f1c599787e39
SHA3-384 hash: bd5771bf8f5bbffb2323073b58fe18dae6080cbbf059cd7f6e2fdfbfe3aa1bec8547fd354858733c56c191a8ac358194
SHA1 hash: 7a7c9aa80b087756392f85611b67c9d8064f2ed4
MD5 hash: 22043fa7e77a63d4b7a6a92fc87623f5
humanhash: march-yellow-timing-network
File name:amd64
Download: download sample
File size:482'032 bytes
First seen:2025-06-16 17:05:17 UTC
Last seen:Never
File type: elf
MIME type:application/x-executable
ssdeep 12288:iD6LPBCvMk0O9na1M80cLt9i5aIaTtpc4W:2+QGO9naz0Szi5anTtR
TLSH T113A41212E290D8FEC4DAC070469FD27BFD767C544234BC6B6298F7322B3AE601B16A55
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

Intelligence

File Origin
# of uploads :
1
# of downloads :
67
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Linux.Siggen.9080.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.32058.LX.BOT.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.31951.LX.BOT.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68504eee07b5e8c1cfe6f6f3linux22vpnfull_triage
Tags:
n/a
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creates directories
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
exploit gcc lolbin remote
Link:
https://www.filescan.io/uploads/68504ef2171e01f95942b268/reports/854d1006-69b1-4322-ad30-baae16011e45/overview
Status:
terminated
Link:
https://sandbox.kunai.rocks/analysis/17d3fde0-00dc-4719-8dea-e8c5e0616282
Behavior Graph:
Download SVG
%3 guuid=df18ae53-1900-0000-dbb0-374192090000 pid=2450 /usr/bin/sudo guuid=8a464056-1900-0000-dbb0-37419b090000 pid=2459 /tmp/sample.bin guuid=df18ae53-1900-0000-dbb0-374192090000 pid=2450->guuid=8a464056-1900-0000-dbb0-37419b090000 pid=2459 execve guuid=25356856-1900-0000-dbb0-37419c090000 pid=2460 /usr/bin/dash guuid=8a464056-1900-0000-dbb0-37419b090000 pid=2459->guuid=25356856-1900-0000-dbb0-37419c090000 pid=2460 execve guuid=9d0fd956-1900-0000-dbb0-37419e090000 pid=2462 /usr/bin/dash guuid=8a464056-1900-0000-dbb0-37419b090000 pid=2459->guuid=9d0fd956-1900-0000-dbb0-37419e090000 pid=2462 execve guuid=71a73957-1900-0000-dbb0-3741a2090000 pid=2466 /tmp/sample.bin mprotect-exec zombie guuid=8a464056-1900-0000-dbb0-37419b090000 pid=2459->guuid=71a73957-1900-0000-dbb0-3741a2090000 pid=2466 clone guuid=52530657-1900-0000-dbb0-3741a0090000 pid=2464 /usr/bin/dash guuid=9d0fd956-1900-0000-dbb0-37419e090000 pid=2462->guuid=52530657-1900-0000-dbb0-3741a0090000 pid=2464 clone guuid=3ee20f57-1900-0000-dbb0-3741a1090000 pid=2465 /usr/bin/dash guuid=9d0fd956-1900-0000-dbb0-37419e090000 pid=2462->guuid=3ee20f57-1900-0000-dbb0-3741a1090000 pid=2465 clone guuid=601c0b5b-1900-0000-dbb0-3741ac090000 pid=2476 /tmp/sample.bin zombie guuid=71a73957-1900-0000-dbb0-3741a2090000 pid=2466->guuid=601c0b5b-1900-0000-dbb0-3741ac090000 pid=2476 clone guuid=c508185b-1900-0000-dbb0-3741ad090000 pid=2477 /tmp/sample.bin guuid=601c0b5b-1900-0000-dbb0-3741ac090000 pid=2476->guuid=c508185b-1900-0000-dbb0-3741ad090000 pid=2477 clone guuid=83da1d5b-1900-0000-dbb0-3741ae090000 pid=2478 /tmp/sample.bin dns net net-scan send-data guuid=c508185b-1900-0000-dbb0-3741ad090000 pid=2477->guuid=83da1d5b-1900-0000-dbb0-3741ae090000 pid=2478 clone d316b2ae-0a7e-5b43-8de6-745900c90c54 127.0.0.1:65535 guuid=83da1d5b-1900-0000-dbb0-3741ae090000 pid=2478->d316b2ae-0a7e-5b43-8de6-745900c90c54 con 38a4910e-6f05-5afe-a8e3-398c2eb18329 time.cloudflare.com:123 guuid=83da1d5b-1900-0000-dbb0-3741ae090000 pid=2478->38a4910e-6f05-5afe-a8e3-398c2eb18329 send: 48B 260af915-6980-5550-b769-5d3074f16b0d 31.200.249.227:31769 guuid=83da1d5b-1900-0000-dbb0-3741ae090000 pid=2478->260af915-6980-5550-b769-5d3074f16b0d send: 68B 2ce807f6-5a3f-5ab1-9022-dc8a907b9b66 31.200.249.227:31877 guuid=83da1d5b-1900-0000-dbb0-3741ae090000 pid=2478->2ce807f6-5a3f-5ab1-9022-dc8a907b9b66 send: 68B 7c61fe30-9e23-564b-b7e6-3d36a3a90614 31.200.249.146:31768 guuid=83da1d5b-1900-0000-dbb0-3741ae090000 pid=2478->7c61fe30-9e23-564b-b7e6-3d36a3a90614 send: 68B guuid=83da1d5b-1900-0000-dbb0-3741ae090000 pid=2478|send-data send-data to 242 IP addresses review logs to see them all guuid=83da1d5b-1900-0000-dbb0-3741ae090000 pid=2478->guuid=83da1d5b-1900-0000-dbb0-3741ae090000 pid=2478|send-data send
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/b0712c32-e3f4-4fd0-9b8c-0ee2f44e2078
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.spyw
Score:
56 / 100
Link:
https://www.joesandbox.com/analysis/1715751
Signature
Executes the "crontab" command typically for achieving persistence
Opens /sys/class/net/* files useful for querying network interface information
Sample reads /proc/mounts (often used for finding a writable filesystem)
Sample tries to persist itself using cron
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1715751 Sample: amd64.elf Startdate: 16/06/2025 Architecture: LINUX Score: 56 37 176.57.0.208, 2070 XOLJO Jordan 2->37 39 94.62.235.40, 52927, 6881 VODAFONE-PTVodafonePortugalPT Portugal 2->39 41 102 other IPs or domains 2->41 9 amd64.elf 2->9         started        process3 process4 11 amd64.elf sh 9->11         started        13 amd64.elf 9->13         started        16 amd64.elf sh 9->16         started        signatures5 18 sh crontab 11->18         started        22 sh 11->22         started        49 Opens /sys/class/net/* files useful for querying network interface information 13->49 51 Sample reads /proc/mounts (often used for finding a writable filesystem) 13->51 24 amd64.elf 13->24         started        26 sh crontab 16->26         started        process6 file7 35 /var/spool/cron/crontabs/tmp.2PXsz3, ASCII 18->35 dropped 43 Sample tries to persist itself using cron 18->43 45 Executes the "crontab" command typically for achieving persistence 18->45 28 sh crontab 22->28         started        31 amd64.elf 24->31         started        signatures8 process9 signatures10 47 Executes the "crontab" command typically for achieving persistence 28->47 33 amd64.elf 31->33         started        process11
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/40c31db83861778b1c811b78c2d2b9aa97ed22b24ebb04fb0803f1c599787e39
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/40c31db83861778b1c811b78c2d2b9aa97ed22b24ebb04fb0803f1c599787e39/
Threat name:
Linux.Trojan.Multiverze
Create hunting rule
Status:
Malicious
First seen:
2025-06-16 17:05:45 UTC
File Type:
ELF64 Little (Exe)
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=idbr3obymf3ywhebdn4mfuvzvkl62ivsj25qj6yiapy4lglypy4q._file
Result
Malware family:
n/a
Score:
  6/10
Tags:
antivm defense_evasion discovery execution linux persistence privilege_escalation
Link:
https://tria.ge/reports/250616-vl7eda1wgx/
Behaviour
Enumerates kernel/hardware configuration
Reads runtime system information
Writes file to tmp directory
Checks CPU configuration
Checks hardware identifiers (DMI)
Creates/modifies Cron job
Enumerates running processes
Reads MAC address of network interface
Reads hardware information
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/d00b312e-af13-4fbc-b9f3-b625db1978d8
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.20
Link:
https://yomi.yoroi.company/submissions/40c31db83861778b1c811b78c2d2b9aa97ed22b24ebb04fb0803f1c599787e39

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:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:enterpriseunix2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise UNIX
Rule name:linux_generic_ipv6_catcher
Create hunting rule
Author:@_lubiedo
Description:ELF samples using IPv6 addresses
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

File information

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

Web download

elf 40c31db83861778b1c811b78c2d2b9aa97ed22b24ebb04fb0803f1c599787e39

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3550686/
  
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