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Linux Analysis Report
Yboats.arm.elf

Overview

General Information

Sample name:Yboats.arm.elf
Analysis ID:1594271
MD5:d2ed6a8d893446bfc42a36ce85fb9935
SHA1:45d7c5dca79e90ba779a019212e18f3a77496ded
SHA256:118bfc3924dba847cb0ad4e1d128e1438a87912dec508295f866661bf45ab64a
Tags:elfuser-abuse_ch
Infos:

Detection

Score:52
Range:0 - 100
Whitelisted:false

Signatures

Multi AV Scanner detection for submitted file
Sample is packed with UPX
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:1594271
Start date and time:2025-01-18 17:57:16 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 35s
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:Yboats.arm.elf
Detection:MAL
Classification:mal52.evad.linELF@0/0@2/0
Command:/tmp/Yboats.arm.elf
PID:5534
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
  • Yboats.arm.elf (PID: 5534, Parent: 5451, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/Yboats.arm.elf
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: Yboats.arm.elfVirustotal: Detection: 39%Perma Link
Source: Yboats.arm.elfReversingLabs: Detection: 44%
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: Yboats.arm.elfString found in binary or memory: http://upx.sf.net
Source: LOAD without section mappingsProgram segment: 0x8000
Source: classification engineClassification label: mal52.evad.linELF@0/0@2/0

Data Obfuscation

barindex
Source: initial sampleString containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sampleString containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sampleString containing UPX found: $Id: UPX 3.95 Copyright (C) 1996-2018 the UPX Team. All Rights Reserved. $
Source: Yboats.arm.elfSubmission file: segment LOAD with 7.9732 entropy (max. 8.0)
Source: /tmp/Yboats.arm.elf (PID: 5534)Queries kernel information via 'uname': Jump to behavior
Source: Yboats.arm.elf, 5534.1.000055564b4dd000.000055564b60b000.rw-.sdmpBinary or memory string: COKVUPEOKVUPBOKVU!/etc/qemu-binfmt/arm
Source: Yboats.arm.elf, 5534.1.00007ffde189e000.00007ffde18bf000.rw-.sdmpBinary or memory string: qx86_64/usr/bin/qemu-arm/tmp/Yboats.arm.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/Yboats.arm.elf
Source: Yboats.arm.elf, 5534.1.000055564b4dd000.000055564b60b000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: Yboats.arm.elf, 5534.1.00007ffde189e000.00007ffde18bf000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: Yboats.arm.elf, 5534.1.00007ffde189e000.00007ffde18bf000.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 Interception11
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: 1594271 Sample: Yboats.arm.elf Startdate: 18/01/2025 Architecture: LINUX Score: 52 8 daisy.ubuntu.com 2->8 10 Multi AV Scanner detection for submitted file 2->10 12 Sample is packed with UPX 2->12 6 Yboats.arm.elf 2->6         started        signatures3 process4
SourceDetectionScannerLabelLink
Yboats.arm.elf40%VirustotalBrowse
Yboats.arm.elf45%ReversingLabsLinux.Trojan.Multiverze
No Antivirus matches
No Antivirus matches
No Antivirus matches

Download Network PCAP: filteredfull

NameIPActiveMaliciousAntivirus DetectionReputation
daisy.ubuntu.com
162.213.35.24
truefalse
    high
    NameSourceMaliciousAntivirus DetectionReputation
    http://upx.sf.netYboats.arm.elffalse
      high
      No contacted IP infos
      No context
      MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
      daisy.ubuntu.comloki.arm6.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.24
      dbg.x86.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.25
      I586.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.24
      ARMV4L.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.24
      ARMV6L.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.24
      MIPSEL.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.25
      ARMV5L.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.24
      sshd.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.24
      .i.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.25
      armv7l.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.25
      No context
      No context
      No context
      No created / dropped files found
      File type:ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, no section header
      Entropy (8bit):7.971532430698014
      TrID:
      • ELF Executable and Linkable format (generic) (4004/1) 100.00%
      File name:Yboats.arm.elf
      File size:44'336 bytes
      MD5:d2ed6a8d893446bfc42a36ce85fb9935
      SHA1:45d7c5dca79e90ba779a019212e18f3a77496ded
      SHA256:118bfc3924dba847cb0ad4e1d128e1438a87912dec508295f866661bf45ab64a
      SHA512:6292ac9b65eca93fa55f902c8adc8fc38ba8022eadad245a43aefb73a2df9df7f6ce752ed22a5c830d90f89c6c900d9233754827221570ea1426e3280f9e98d2
      SSDEEP:768:bmiCItUQwrh/3hFZ+xiJWyiQvEwDwiKmKAD0w5iSodMRwcDtnU3UE:KiCM0r3FcegQvbM29RodMisne
      TLSH:60130160658D5316B9A13E718DFF09040095FBBCAB9AF07E1B14F2207B3E56A6F79470
      File Content Preview:.ELF...a..........(.....l...4...........4. ...(.....................4...4...........................................Q.td............................K..gUPX!........X...X.......T..........?.E.h;.}...^..........f:(..v4.jq....VQ.....5.1.R.....S/`..p./...\...

      ELF header

      Class:ELF32
      Data:2's complement, little endian
      Version:1 (current)
      Machine:ARM
      Version Number:0x1
      Type:EXEC (Executable file)
      OS/ABI:ARM - ABI
      ABI Version:0
      Entry Point Address:0x11a6c
      Flags:0x202
      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
      LOAD0x00x80000x80000xac340xac347.97320x5R E0x8000
      LOAD0x00x180000x180000x00x19bc00.00000x6RW 0x8000
      GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

      Download Network PCAP: filteredfull

      TimestampSource PortDest PortSource IPDest IP
      Jan 18, 2025 17:58:12.070223093 CET4690253192.168.2.151.1.1.1
      Jan 18, 2025 17:58:12.070224047 CET4287753192.168.2.151.1.1.1
      Jan 18, 2025 17:58:12.077649117 CET53428771.1.1.1192.168.2.15
      Jan 18, 2025 17:58:12.078593969 CET53469021.1.1.1192.168.2.15
      TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
      Jan 18, 2025 17:58:12.070223093 CET192.168.2.151.1.1.10xd7d8Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
      Jan 18, 2025 17:58:12.070224047 CET192.168.2.151.1.1.10x145Standard query (0)daisy.ubuntu.com28IN (0x0001)false
      TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
      Jan 18, 2025 17:58:12.078593969 CET1.1.1.1192.168.2.150xd7d8No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
      Jan 18, 2025 17:58:12.078593969 CET1.1.1.1192.168.2.150xd7d8No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

      System Behavior

      Start time (UTC):16:58:09
      Start date (UTC):18/01/2025
      Path:/tmp/Yboats.arm.elf
      Arguments:/tmp/Yboats.arm.elf
      File size:4956856 bytes
      MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1