Joe Sandbox Cloud Basic Analysis Report
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Linux Analysis Report
tftp.elf

Overview

General Information

Sample name:tftp.elf
Analysis ID:1650027
MD5:c46d8a058b41194e94addfc5ba923ec7
SHA1:1aed0b1606e4a931c047f8e4b496b18436f8587a
SHA256:85d316b2b225e9a51ff7d652885648d074ad5e94ed0779c145b47bf108cdc11e
Tags:elfuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100

Signatures

Multi AV Scanner detection for submitted file
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious

General Information

Joe Sandbox version:42.0.0 Malachite
Analysis ID:1650027
Start date and time:2025-03-27 12:03:11 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 24s
Hypervisor based Inspection enabled:false
Report type:full
Cookbook file name:defaultlinuxfilecookbook.jbs
Analysis system description:Ubuntu Linux 20.04 x64 (Kernel 5.4.0-72, Firefox 91.0, Evince Document Viewer 3.36.10, LibreOffice 6.4.7.2, OpenJDK 11.0.11)
Analysis Mode:default
Sample name:tftp.elf
Detection:MAL
Classification:mal48.linELF@0/0@2/0

Runtime Messages

Command:/tmp/tftp.elf
PID:5433
Exit Code:135
Exit Code Info:
Killed:False
Standard Output:

Standard Error:

Process Tree

  • system is lnxubuntu20
  • tftp.elf (PID: 5433, Parent: 5355, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/tftp.elf
  • cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

  • • AV Detection
  • • Networking
  • • System Summary
  • • Malware Analysis System Evasion

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: tftp.elfReversingLabs: Detection: 13%
Source: unknownUDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknownUDP traffic detected without corresponding DNS query: 1.1.1.1
Source: global trafficDNS traffic detected: DNS query: daisy.ubuntu.com
Source: classification engineClassification label: mal48.linELF@0/0@2/0
Source: /tmp/tftp.elf (PID: 5433)Queries kernel information via 'uname': Jump to behavior
Source: tftp.elf, 5433.1.00007fffdbb04000.00007fffdbb25000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/tftp.elfSUDO_USER=saturninoPATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/binDISPLAY=:1.0XAUTHORITY=/run/user/1000/gdm/XauthoritySUDO_UID=1000TERM=xterm-256colorCOLORTERM=truecolorLOGNAME=rootUSER=rootLANG=en_US.UTF-8SUDO_COMMAND=/bin/bashHOME=/rootMAIL=/var/mail/rootSUDO_GID=1000SHELL=/bin/bash/tmp/tftp.elf
Source: tftp.elf, 5433.1.00005613c005e000.00005613c016a000.rw-.sdmpBinary or memory string: Vrg.qemu.gdb.arm.sys.regs">
Source: tftp.elf, 5433.1.00005613c005e000.00005613c016a000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: tftp.elf, 5433.1.00005613c005e000.00005613c016a000.rw-.sdmpBinary or memory string: V!/etc/qemu-binfmt/arm
Source: tftp.elf, 5433.1.00007fffdbb04000.00007fffdbb25000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: tftp.elf, 5433.1.00005613c005e000.00005613c016a000.rw-.sdmpBinary or memory string: rg.qemu.gdb.arm.sys.regs">

Mitre Att&ck Matrix

ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath InterceptionDirect Volume AccessOS Credential Dumping11
Security Software Discovery		Remote ServicesData from Local System1
Non-Application Layer Protocol		Exfiltration Over Other Network MediumAbuse Accessibility Features
CredentialsDomainsDefault AccountsScheduled Task/JobBoot or Logon Initialization ScriptsBoot or Logon Initialization ScriptsRootkitLSASS MemoryApplication Window DiscoveryRemote Desktop ProtocolData from Removable Media1
Application Layer Protocol		Exfiltration Over BluetoothNetwork Denial of Service

Malware Configuration

⊘No configs have been found

Behavior Graph

Hide Legend

Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Number of created Files
  • Is malicious
  • Internet
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1650027 Sample: tftp.elf Startdate: 27/03/2025 Architecture: LINUX Score: 48 8 daisy.ubuntu.com 2->8 10 Multi AV Scanner detection for submitted file 2->10 6 tftp.elf 2->6         started        signatures3 process4

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

SourceDetectionScannerLabelLink
tftp.elf14%ReversingLabsLinux.Trojan.Generic

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

NameIPActiveMaliciousAntivirus DetectionReputation
daisy.ubuntu.com
162.213.35.25
truefalse
    		high

    World Map of Contacted IPs

    ⊘No contacted IP infos

    Joe Sandbox View / Context

    IPs

    ⊘No context

    Domains

    MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
    daisy.ubuntu.comi.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.25
    i.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.25
    morte.spc.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    efjepc.elfGet hashmaliciousGafgyt, MiraiBrowse
    • 162.213.35.25
    morte.arm6.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    spc.elfGet hashmaliciousOkiruBrowse
    • 162.213.35.24
    resgod.ppc.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.24
    x64.elfGet hashmaliciousGafgyt, OkiruBrowse
    • 162.213.35.24
    resgod.arm7.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.25
    resgod.m68k.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.24

    ASNs

    ⊘No context

    JA3 Fingerprints

    ⊘No context

    Dropped Files

    ⊘No context

    Created / dropped Files

    ⊘No created / dropped files found

    Static File Info

    General

    File type:ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.3, missing section headers at 381572
    Entropy (8bit):4.652411927578426
    TrID:
    • ELF Executable and Linkable format (generic) (4004/1) 100.00%
    File name:tftp.elf
    File size:16'227 bytes
    MD5:c46d8a058b41194e94addfc5ba923ec7
    SHA1:1aed0b1606e4a931c047f8e4b496b18436f8587a
    SHA256:85d316b2b225e9a51ff7d652885648d074ad5e94ed0779c145b47bf108cdc11e
    SHA512:5e60281712f9bfb27ec974b3ecdbbb2cc02c7038f38073fe6919d5ab7b6532ba72a03cd02e8b72cfd75c3fc59f2de918fe9da17a203cc1bc839153f1ec8555c1
    SSDEEP:192:flPghAlcmOS9zjBT+5Of8db/SUhXsVOHz7utpiXM0acflV+4sDAp:tPjlySD++8pdsVOT7u7qMlClV+NM
    TLSH:AC7284C698B3469BC4CF03750417ADA38E768182F75F9F63634CDCB5692260CDE89B62
    File Content Preview:.ELF..............(.........4...........4. ...(........p.....+...+......................4...4...4...@...@...............t...t...t..............................................................................................................................

    Network Behavior

    Download Network PCAP: filtered – full

    TimestampSource PortDest PortSource IPDest IP
    Mar 27, 2025 12:04:01.067317963 CET5251253192.168.2.131.1.1.1
    Mar 27, 2025 12:04:01.067382097 CET6087753192.168.2.131.1.1.1
    Mar 27, 2025 12:04:01.152497053 CET53608771.1.1.1192.168.2.13
    Mar 27, 2025 12:04:01.152514935 CET53525121.1.1.1192.168.2.13

    DNS Queries

    TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
    Mar 27, 2025 12:04:01.067317963 CET192.168.2.131.1.1.10xef9eStandard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
    Mar 27, 2025 12:04:01.067382097 CET192.168.2.131.1.1.10xc691Standard query (0)daisy.ubuntu.com28IN (0x0001)false

    DNS Answers

    TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
    Mar 27, 2025 12:04:01.152514935 CET1.1.1.1192.168.2.130xef9eNo error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false
    Mar 27, 2025 12:04:01.152514935 CET1.1.1.1192.168.2.130xef9eNo error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false

    System Behavior

    General

    Start time (UTC):11:03:59
    Start date (UTC):27/03/2025
    Path:/tmp/tftp.elf
    Arguments:/tmp/tftp.elf
    File size:4956856 bytes
    MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

    File Activities

    Process Activities

    System Activities