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

Overview

General Information

Sample name:tftp.elf
Analysis ID:1629786
MD5:bc0af0fe63ebd6764e2daee27b7bd7dc
SHA1:7b38f2915de0b511a089e6e5970ed5d8d26b14ad
SHA256:f931c8265cbac0be9f645cad83be86d386469471d9bfc64c6c149782093ea0e4
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:1629786
Start date and time:2025-03-05 07:47:20 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 28s
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:5548
Exit Code:135
Exit Code Info:
Killed:False
Standard Output:

Standard Error:

Process Tree

  • system is lnxubuntu20
  • tftp.elf (PID: 5548, Parent: 5462, 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: 18%
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: 5548)Queries kernel information via 'uname': Jump to behavior
Source: tftp.elf, 5548.1.000055f48824c000.000055f488358000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: tftp.elf, 5548.1.00007ffd921ee000.00007ffd9220f000.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, 5548.1.000055f48824c000.000055f488358000.rw-.sdmpBinary or memory string: Urg.qemu.gdb.arm.sys.regs">
Source: tftp.elf, 5548.1.000055f48824c000.000055f488358000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: tftp.elf, 5548.1.00007ffd921ee000.00007ffd9220f000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: tftp.elf, 5548.1.000055f48824c000.000055f488358000.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: 1629786 Sample: tftp.elf Startdate: 05/03/2025 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

Screenshots

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Thumbnails

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windows-stand

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

SourceDetectionScannerLabelLink
tftp.elf18%ReversingLabsLinux.Trojan.Multiverze

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
162.213.35.24
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.comcbr.ppc.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.24
    cbr.mpsl.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.24
    mpsl.elfGet hashmaliciousMirai, MoobotBrowse
    • 162.213.35.25
    cbr.m68k.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.25
    x86_64.elfGet hashmaliciousMirai, MoobotBrowse
    • 162.213.35.25
    spc.elfGet hashmaliciousMirai, MoobotBrowse
    • 162.213.35.24
    cbr.ppc.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.24
    arm5.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.25
    cbr.arm6.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):6.009680985266546
    TrID:
    • ELF Executable and Linkable format (generic) (4004/1) 100.00%
    File name:tftp.elf
    File size:102'400 bytes
    MD5:bc0af0fe63ebd6764e2daee27b7bd7dc
    SHA1:7b38f2915de0b511a089e6e5970ed5d8d26b14ad
    SHA256:f931c8265cbac0be9f645cad83be86d386469471d9bfc64c6c149782093ea0e4
    SHA512:e5752485b01df42d16812a54a490e8d2d97149540afd2eb725302016d6e432072e33e35785375fc9e00a50d517c17f9ee792202029ce8401de77b8c2ef07c13c
    SSDEEP:3072:9LOuh02xHCKQnqZ9YfMXKgyLlBZSyPj3Nu:FOuhPHCKsqZ9YfM6g23ZJL3Nu
    TLSH:F4A30A96F8A28B56C4C557B7FB4FC75637231795E3DF36038A184E34278B50A8E3AA01
    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 5, 2025 07:48:11.151046038 CET4646153192.168.2.151.1.1.1
    Mar 5, 2025 07:48:11.151046038 CET4906553192.168.2.151.1.1.1
    Mar 5, 2025 07:48:11.158637047 CET53490651.1.1.1192.168.2.15
    Mar 5, 2025 07:48:11.159079075 CET53464611.1.1.1192.168.2.15

    DNS Queries

    TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
    Mar 5, 2025 07:48:11.151046038 CET192.168.2.151.1.1.10x197aStandard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
    Mar 5, 2025 07:48:11.151046038 CET192.168.2.151.1.1.10x2026Standard query (0)daisy.ubuntu.com28IN (0x0001)false

    DNS Answers

    TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
    Mar 5, 2025 07:48:11.159079075 CET1.1.1.1192.168.2.150x197aNo error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
    Mar 5, 2025 07:48:11.159079075 CET1.1.1.1192.168.2.150x197aNo error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

    System Behavior

    General

    Start time (UTC):06:48:08
    Start date (UTC):05/03/2025
    Path:/tmp/tftp.elf
    Arguments:/tmp/tftp.elf
    File size:4956856 bytes
    MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

    File Activities

    Process Activities

    System Activities