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Linux Analysis Report
.5r3fqt67ew531has4231.arm5.elf

Overview

General Information

Sample name:.5r3fqt67ew531has4231.arm5.elf
Analysis ID:1644186
MD5:375365ec575385123b14dee922c78b80
SHA1:07da1f13dc29ed6c0403e8c83edfb1a7a69d891b
SHA256:9fc6684894a51b23236a389dc6aeab11c4b33f4cadeba29d7f4b1ab18aabb171
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
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious
Joe Sandbox version:42.0.0 Malachite
Analysis ID:1644186
Start date and time:2025-03-20 12:39:57 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 40s
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:.5r3fqt67ew531has4231.arm5.elf
Detection:MAL
Classification:mal52.evad.linELF@0/0@2/0
Command:/tmp/.5r3fqt67ew531has4231.arm5.elf
PID:5512
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
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: .5r3fqt67ew531has4231.arm5.elfReversingLabs: Detection: 33%
Source: .5r3fqt67ew531has4231.arm5.elfVirustotal: Detection: 29%Perma Link
Source: global trafficTCP traffic: 192.168.2.14:46540 -> 185.125.190.26:443
Source: unknownTCP traffic detected without corresponding DNS query: 185.125.190.26
Source: unknownTCP traffic detected without corresponding DNS query: 185.125.190.26
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: .5r3fqt67ew531has4231.arm5.elfString found in binary or memory: http://upx.sf.net
Source: unknownNetwork traffic detected: HTTP traffic on port 46540 -> 443
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: .5r3fqt67ew531has4231.arm5.elfSubmission file: segment LOAD with 7.9805 entropy (max. 8.0)
Source: /tmp/.5r3fqt67ew531has4231.arm5.elf (PID: 5512)Queries kernel information via 'uname': Jump to behavior
Source: .5r3fqt67ew531has4231.arm5.elf, 5512.1.000055c9bac0c000.000055c9bad3a000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: .5r3fqt67ew531has4231.arm5.elf, 5512.1.00007ffccafff000.00007ffccb020000.rw-.sdmpBinary or memory string: tx86_64/usr/bin/qemu-arm/tmp/.5r3fqt67ew531has4231.arm5.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/.5r3fqt67ew531has4231.arm5.elf
Source: .5r3fqt67ew531has4231.arm5.elf, 5512.1.000055c9bac0c000.000055c9bad3a000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: .5r3fqt67ew531has4231.arm5.elf, 5512.1.00007ffccafff000.00007ffccb020000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: .5r3fqt67ew531has4231.arm5.elf, 5512.1.00007ffccafff000.00007ffccb020000.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
Encrypted Channel
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
Non-Application Layer Protocol
Exfiltration Over BluetoothNetwork Denial of Service
Email AddressesDNS ServerDomain AccountsAtLogon Script (Windows)Logon Script (Windows)Obfuscated Files or InformationSecurity Account ManagerQuery RegistrySMB/Windows Admin SharesData from Network Shared Drive2
Application Layer Protocol
Automated ExfiltrationData Encrypted for Impact
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: 1644186 Sample: .5r3fqt67ew531has4231.arm5.elf Startdate: 20/03/2025 Architecture: LINUX Score: 52 8 185.125.190.26, 443 CANONICAL-ASGB United Kingdom 2->8 10 daisy.ubuntu.com 2->10 12 Multi AV Scanner detection for submitted file 2->12 14 Sample is packed with UPX 2->14 6 .5r3fqt67ew531has4231.arm5.elf 2->6         started        signatures3 process4

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


windows-stand
SourceDetectionScannerLabelLink
.5r3fqt67ew531has4231.arm5.elf33%ReversingLabsLinux.Backdoor.Mirai
.5r3fqt67ew531has4231.arm5.elf29%VirustotalBrowse
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.net.5r3fqt67ew531has4231.arm5.elffalse
      high
      • No. of IPs < 25%
      • 25% < No. of IPs < 50%
      • 50% < No. of IPs < 75%
      • 75% < No. of IPs
      IPDomainCountryFlagASNASN NameMalicious
      185.125.190.26
      unknownUnited Kingdom
      41231CANONICAL-ASGBfalse
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                          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):7.9792527003859846
                          TrID:
                          • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                          File name:.5r3fqt67ew531has4231.arm5.elf
                          File size:55'060 bytes
                          MD5:375365ec575385123b14dee922c78b80
                          SHA1:07da1f13dc29ed6c0403e8c83edfb1a7a69d891b
                          SHA256:9fc6684894a51b23236a389dc6aeab11c4b33f4cadeba29d7f4b1ab18aabb171
                          SHA512:45d409cbc42c7c2b8c87d4648c29de649c500b24d24abc8874fc2d3902e5a0a020862b1ed2c4e52ca8cd0f1a13a4d6f284049e3f9ef328e4291488d5cbf4498d
                          SSDEEP:1536:Y3TDJymzuvIc9RUydK+DjjA1Ug1YuPOyAIP2Ea:Y3RymzuRUydKcjFgDXPza
                          TLSH:6B33F188910B6042D1900837FABECBC7D74B5BF8A1173246F7B8A93D7ECB255934D698
                          File Content Preview:.ELF...a..........(.....\D..4...........4. ...(.....................$...$...............................|"..........Q.td............................K..gUPX!........ ].. ]......R..........?.E.h;.}...^..........g^.X....?7eb4..sS.R.......3.......$.\.Q.j.8+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:ARM - ABI
                          ABI Version:0
                          Entry Point Address:0x1445c
                          Flags:0x2
                          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
                          LOAD0x00x80000x80000xd6240xd6247.98050x5R E0x8000
                          LOAD0x00x180000x180000x00x2227c0.00000x6RW 0x8000
                          GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

                          Download Network PCAP: filteredfull

                          • Total Packets: 4
                          • 443 (HTTPS)
                          • 53 (DNS)
                          TimestampSource PortDest PortSource IPDest IP
                          Mar 20, 2025 12:41:03.068321943 CET46540443192.168.2.14185.125.190.26
                          Mar 20, 2025 12:41:33.275393009 CET46540443192.168.2.14185.125.190.26
                          TimestampSource PortDest PortSource IPDest IP
                          Mar 20, 2025 12:40:55.208657980 CET3897653192.168.2.141.1.1.1
                          Mar 20, 2025 12:40:55.208700895 CET3804653192.168.2.141.1.1.1
                          Mar 20, 2025 12:40:55.307285070 CET53380461.1.1.1192.168.2.14
                          Mar 20, 2025 12:40:55.307388067 CET53389761.1.1.1192.168.2.14
                          TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
                          Mar 20, 2025 12:40:55.208657980 CET192.168.2.141.1.1.10x4484Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
                          Mar 20, 2025 12:40:55.208700895 CET192.168.2.141.1.1.10x4408Standard query (0)daisy.ubuntu.com28IN (0x0001)false
                          TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
                          Mar 20, 2025 12:40:55.307388067 CET1.1.1.1192.168.2.140x4484No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false
                          Mar 20, 2025 12:40:55.307388067 CET1.1.1.1192.168.2.140x4484No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false

                          System Behavior

                          Start time (UTC):11:40:53
                          Start date (UTC):20/03/2025
                          Path:/tmp/.5r3fqt67ew531has4231.arm5.elf
                          Arguments:/tmp/.5r3fqt67ew531has4231.arm5.elf
                          File size:4956856 bytes
                          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1