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Linux Analysis Report
bot.arm7.elf

Overview

General Information

Sample name:bot.arm7.elf
Analysis ID:1644141
MD5:6758aa43727217934860a56a7bb7117d
SHA1:a79642a41b25d29306ce9f27acca81a41ea34e46
SHA256:807d433253ac8f538d3bb932c4936dd00918eb68b686c5e0a54f7c32467b1690
Tags:elfuser-abuse_ch
Infos:

Detection

Score:52
Range:0 - 100

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:1644141
Start date and time:2025-03-20 11:56:43 +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:bot.arm7.elf
Detection:MAL
Classification:mal52.evad.linELF@0/0@2/0
Command:/tmp/bot.arm7.elf
PID:5517
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
  • bot.arm7.elf (PID: 5517, Parent: 5441, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/bot.arm7.elf
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: bot.arm7.elfVirustotal: Detection: 37%Perma Link
Source: bot.arm7.elfReversingLabs: Detection: 41%
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: bot.arm7.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: bot.arm7.elfSubmission file: segment LOAD with 7.9756 entropy (max. 8.0)
Source: /tmp/bot.arm7.elf (PID: 5517)Queries kernel information via 'uname': Jump to behavior
Source: bot.arm7.elf, 5517.1.000055b6b3396000.000055b6b34c4000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: bot.arm7.elf, 5517.1.00007ffefc6db000.00007ffefc6fc000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/bot.arm7.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/bot.arm7.elf
Source: bot.arm7.elf, 5517.1.000055b6b3396000.000055b6b34c4000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: bot.arm7.elf, 5517.1.00007ffefc6db000.00007ffefc6fc000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: bot.arm7.elf, 5517.1.00007ffefc6db000.00007ffefc6fc000.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: 1644141 Sample: bot.arm7.elf Startdate: 20/03/2025 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 bot.arm7.elf 2->6         started        signatures3 process4

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


windows-stand
SourceDetectionScannerLabelLink
bot.arm7.elf38%VirustotalBrowse
bot.arm7.elf42%ReversingLabsLinux.Backdoor.Mirai
No Antivirus matches
No Antivirus matches
No Antivirus matches

Download Network PCAP: filteredfull

NameIPActiveMaliciousAntivirus DetectionReputation
daisy.ubuntu.com
162.213.35.25
truefalse
    high
    NameSourceMaliciousAntivirus DetectionReputation
    http://upx.sf.netbot.arm7.elffalse
      high
      No contacted IP infos
      No context
      MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
      daisy.ubuntu.com45.126.126.33-sora.arm6-2025-03-12T03_35_14.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.25
      45.126.126.33-sora.sh4-2025-03-12T01_48_23.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.25
      gigab.sh4.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.25
      mpsl.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.24
      arm7.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.24
      arm5.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.24
      sh4.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.25
      arm.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.25
      aarch64.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.24
      ppc.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.25
      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):7.986576124448946
      TrID:
      • ELF Executable and Linkable format (generic) (4004/1) 100.00%
      File name:bot.arm7.elf
      File size:68'612 bytes
      MD5:6758aa43727217934860a56a7bb7117d
      SHA1:a79642a41b25d29306ce9f27acca81a41ea34e46
      SHA256:807d433253ac8f538d3bb932c4936dd00918eb68b686c5e0a54f7c32467b1690
      SHA512:162c850f19484e2f50bcb8d6c34afbe47a1c21489652e9719b1f82c8993f17d35d8c1982cd92a713258790ddb27e7032f0549b760df31acf92f0f9c8e2fb6142
      SSDEEP:1536:oaiEmoySCq6IdlGoA+OvPeRBnu2U1K7PreppUMMFbMNOS4I13g:FmoyhqNGLWTnumSGD8Obgw
      TLSH:B26301BFA4A2A7BF04741E3D5A73850512DE163881F037BDAAE74285FC9258B43F1B49
      File Content Preview:.ELF..............(.....|&..4...........4. ...(..........................................................}..........Q.td............................x.?.UPX!........&...&.......l..........?.E.h;....#..$...o...w..........Z........W...B$(s^.....6.....r.~D.9`

      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:0x1267c
      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
      LOAD0x00x80000x80000xb87f0xb87f7.97560x5R E0x8000
      LOAD0x00x180000x180000x00x17dac0.00000x6RW 0x8000
      GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

      Download Network PCAP: filteredfull

      TimestampSource PortDest PortSource IPDest IP
      Mar 20, 2025 11:57:30.107470036 CET5332253192.168.2.151.1.1.1
      Mar 20, 2025 11:57:30.107523918 CET4034553192.168.2.151.1.1.1
      Mar 20, 2025 11:57:30.206826925 CET53533221.1.1.1192.168.2.15
      Mar 20, 2025 11:57:30.206866026 CET53403451.1.1.1192.168.2.15
      TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
      Mar 20, 2025 11:57:30.107470036 CET192.168.2.151.1.1.10x8d07Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
      Mar 20, 2025 11:57:30.107523918 CET192.168.2.151.1.1.10x269fStandard query (0)daisy.ubuntu.com28IN (0x0001)false
      TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
      Mar 20, 2025 11:57:30.206826925 CET1.1.1.1192.168.2.150x8d07No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false
      Mar 20, 2025 11:57:30.206826925 CET1.1.1.1192.168.2.150x8d07No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false

      System Behavior

      Start time (UTC):10:57:27
      Start date (UTC):20/03/2025
      Path:/tmp/bot.arm7.elf
      Arguments:/tmp/bot.arm7.elf
      File size:4956856 bytes
      MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1