Edit tour

Linux Analysis Report
arm6.elf

Overview

General Information

Sample name:arm6.elf
Analysis ID:1644233
MD5:019cb4e589ab94b9fbdea7b14990c5de
SHA1:cf2170df119d5a2bece3e7b289dac36ea513177b
SHA256:0582bcf6749a079d4d97fbeb9cd47293ceb9e936d128d3b7d0c09a2b28e68334
Tags:elfMiraiuser-abuse_ch
Infos:

Detection

Score:56
Range:0 - 100

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
ELF contains segments with high entropy indicating compressed/encrypted content
Sample contains only a LOAD segment without any section mappings
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious
Joe Sandbox version:42.0.0 Malachite
Analysis ID:1644233
Start date and time:2025-03-20 13:21:57 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 25s
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:arm6.elf
Detection:MAL
Classification:mal56.linELF@0/0@2/0
Command:/tmp/arm6.elf
PID:5533
Exit Code:139
Exit Code Info:SIGSEGV (11) Segmentation fault invalid memory reference
Killed:False
Standard Output:

Standard Error:qemu: uncaught target signal 11 (Segmentation fault) - core dumped
  • system is lnxubuntu20
  • arm6.elf (PID: 5533, Parent: 5449, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm6.elf
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: arm6.elfAvira: detected
Source: arm6.elfVirustotal: Detection: 45%Perma Link
Source: arm6.elfReversingLabs: Detection: 52%
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: LOAD without section mappingsProgram segment: 0x8000
Source: classification engineClassification label: mal56.linELF@0/0@2/0
Source: arm6.elfSubmission file: segment LOAD with 7.9703 entropy (max. 8.0)
Source: /tmp/arm6.elf (PID: 5533)Queries kernel information via 'uname': Jump to behavior
Source: arm6.elf, 5533.1.00007fff415e3000.00007fff41604000.rw-.sdmpBinary or memory string: KSx86_64/usr/bin/qemu-arm/tmp/arm6.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/arm6.elf
Source: arm6.elf, 5533.1.0000559bc3a41000.0000559bc3b6f000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: arm6.elf, 5533.1.0000559bc3a41000.0000559bc3b6f000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: arm6.elf, 5533.1.00007fff415e3000.00007fff41604000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: arm6.elf, 5533.1.00007fff415e3000.00007fff41604000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath Interception1
Obfuscated Files or Information
OS 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
No configs have been found
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: 1644233 Sample: arm6.elf Startdate: 20/03/2025 Architecture: LINUX Score: 56 8 daisy.ubuntu.com 2->8 10 Antivirus / Scanner detection for submitted sample 2->10 12 Multi AV Scanner detection for submitted file 2->12 6 arm6.elf 2->6         started        signatures3 process4

This section contains all screenshots as thumbnails, including those not shown in the slideshow.


windows-stand
SourceDetectionScannerLabelLink
arm6.elf45%VirustotalBrowse
arm6.elf53%ReversingLabsLinux.Backdoor.Mirai
arm6.elf100%AviraEXP/ELF.Agent.F.14
No Antivirus matches
No Antivirus matches
No Antivirus matches

Download Network PCAP: filteredfull

NameIPActiveMaliciousAntivirus DetectionReputation
daisy.ubuntu.com
162.213.35.24
truefalse
    high
    No contacted IP infos
    No context
    MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
    daisy.ubuntu.commpsl.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    x86.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    arm.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    rtk.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    zte.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    root.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    .5r3fqt67ew531has4231.sh4.elfGet hashmaliciousGafgyt, Mirai, Moobot, OkiruBrowse
    • 162.213.35.24
    yakuza.ppc.elfGet hashmaliciousGafgyt, MiraiBrowse
    • 162.213.35.25
    yakuza.arm6.elfGet hashmaliciousGafgyt, MiraiBrowse
    • 162.213.35.24
    yakuza.arm4.elfGet hashmaliciousGafgyt, MiraiBrowse
    • 162.213.35.24
    No context
    No context
    No context
    No created / dropped files found
    File type:ELF 32-bit LSB executable, ARM, EABI4 version 1 (GNU/Linux), statically linked, no section header
    Entropy (8bit):7.968399988715703
    TrID:
    • ELF Executable and Linkable format (generic) (4004/1) 100.00%
    File name:arm6.elf
    File size:40'652 bytes
    MD5:019cb4e589ab94b9fbdea7b14990c5de
    SHA1:cf2170df119d5a2bece3e7b289dac36ea513177b
    SHA256:0582bcf6749a079d4d97fbeb9cd47293ceb9e936d128d3b7d0c09a2b28e68334
    SHA512:b16854859476b2dfb81753541cbc20ba0ebb43d71d14502435594834642f255a37c2ca6cf3f4b5eca7868315b31b07b19cf927adf05aaa15abba28186bed0e1b
    SSDEEP:768:5iTE6hKOtr7CR01CdfDZ7PYzYW8eS6CAmgQyILEvpHeDuLvBZjq3U7ciZZ:5uESoV7AzfSsQ2vpHgYZXxZZ
    TLSH:9A03F100AE806313CEF08C39F2AF550133629FBCA4D5A6D16293C66D97D6DD61A3D49B
    File Content Preview:.ELF..............(.....$...4...........4. ...(..........................................................:..........Q.td............................"...YTS.|.......`U..`U......S..........?.E.h;....#..$..1)......b*..K.....E...%._*-....... .Em..U."..... g..

    ELF header

    Class:ELF32
    Data:2's complement, little endian
    Version:1 (current)
    Machine:ARM
    Version Number:0x1
    Type:EXEC (Executable file)
    OS/ABI:UNIX - Linux
    ABI Version:0
    Entry Point Address:0x10c24
    Flags:0x4000002
    ELF Header Size:52
    Program Header Offset:52
    Program Header Size:32
    Number of Program Headers:3
    Section Header Offset:0
    Section Header Size:40
    Number of Section Headers:0
    Header String Table Index:0
    TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
    LOAD0x00x80000x80000x9d930x9d937.97030x5R E0x8000
    LOAD0x00x180000x180000x00x13af80.00000x6RW 0x8000
    GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

    Download Network PCAP: filteredfull

    TimestampSource PortDest PortSource IPDest IP
    Mar 20, 2025 13:22:42.767851114 CET4656953192.168.2.151.1.1.1
    Mar 20, 2025 13:22:42.767967939 CET3377153192.168.2.151.1.1.1
    Mar 20, 2025 13:22:42.865835905 CET53465691.1.1.1192.168.2.15
    Mar 20, 2025 13:22:42.866646051 CET53337711.1.1.1192.168.2.15
    TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
    Mar 20, 2025 13:22:42.767851114 CET192.168.2.151.1.1.10x6c2bStandard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
    Mar 20, 2025 13:22:42.767967939 CET192.168.2.151.1.1.10x9667Standard query (0)daisy.ubuntu.com28IN (0x0001)false
    TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
    Mar 20, 2025 13:22:42.865835905 CET1.1.1.1192.168.2.150x6c2bNo error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
    Mar 20, 2025 13:22:42.865835905 CET1.1.1.1192.168.2.150x6c2bNo error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

    System Behavior

    Start time (UTC):12:22:41
    Start date (UTC):20/03/2025
    Path:/tmp/arm6.elf
    Arguments:/tmp/arm6.elf
    File size:4956856 bytes
    MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1