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Linux Analysis Report
byte.mips.elf

Overview

General Information

Sample name:byte.mips.elf
Analysis ID:1580825
MD5:fba3a44ae65b05dd7bded33f629041fa
SHA1:e71ac9a00dc99a2709b653a2dd136fb70567507f
SHA256:955cc9b58a6f8f9f7f61708bce9005a00ff5a7e1e23f6d05d9dbb61e68b0b910
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
Executes the "rm" command used to delete files or directories
Sample contains only a LOAD segment without any section mappings
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

Joe Sandbox version:41.0.0 Charoite
Analysis ID:1580825
Start date and time:2024-12-26 10:16:04 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 50s
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:byte.mips.elf
Detection:MAL
Classification:mal52.evad.linELF@0/0@0/0
Command:/tmp/byte.mips.elf
PID:6271
Exit Code:133
Exit Code Info:
Killed:False
Standard Output:

Standard Error:qemu: uncaught target signal 5 (Trace/breakpoint trap) - core dumped
  • system is lnxubuntu20
  • byte.mips.elf (PID: 6271, Parent: 6196, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/byte.mips.elf
  • dash New Fork (PID: 6301, Parent: 4331)
  • rm (PID: 6301, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.w3eAegH3jH /tmp/tmp.00Q8JysiGv /tmp/tmp.jGJssSbrMf
  • dash New Fork (PID: 6302, Parent: 4331)
  • rm (PID: 6302, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.w3eAegH3jH /tmp/tmp.00Q8JysiGv /tmp/tmp.jGJssSbrMf
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: byte.mips.elfVirustotal: Detection: 44%Perma Link
Source: byte.mips.elfReversingLabs: Detection: 52%
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknownTCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknownTCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknownTCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
Source: byte.mips.elfString found in binary or memory: http://upx.sf.net
Source: unknownNetwork traffic detected: HTTP traffic on port 443 -> 33606
Source: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 33606 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 42836 -> 443
Source: LOAD without section mappingsProgram segment: 0x400000
Source: classification engineClassification label: mal52.evad.linELF@0/0@0/0

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 3.96 Copyright (C) 1996-2020 the UPX Team. All Rights Reserved. $
Source: /usr/bin/dash (PID: 6301)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.w3eAegH3jH /tmp/tmp.00Q8JysiGv /tmp/tmp.jGJssSbrMfJump to behavior
Source: /usr/bin/dash (PID: 6302)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.w3eAegH3jH /tmp/tmp.00Q8JysiGv /tmp/tmp.jGJssSbrMfJump to behavior
Source: byte.mips.elfSubmission file: segment LOAD with 7.9326 entropy (max. 8.0)
Source: /tmp/byte.mips.elf (PID: 6271)Queries kernel information via 'uname': Jump to behavior
Source: byte.mips.elf, 6271.1.0000564f86612000.0000564f86699000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/mips
Source: byte.mips.elf, 6271.1.0000564f86612000.0000564f86699000.rw-.sdmpBinary or memory string: OV!/etc/qemu-binfmt/mips
Source: byte.mips.elf, 6271.1.00007ffe30196000.00007ffe301b7000.rw-.sdmpBinary or memory string: Xx86_64/usr/bin/qemu-mips/tmp/byte.mips.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/byte.mips.elf
Source: byte.mips.elf, 6271.1.00007ffe30196000.00007ffe301b7000.rw-.sdmpBinary or memory string: /usr/bin/qemu-mips
Source: byte.mips.elf, 6271.1.00007ffe30196000.00007ffe301b7000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 5 (Trace/breakpoint trap) - 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 Scripts1
File Deletion
LSASS 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: 1580825 Sample: byte.mips.elf Startdate: 26/12/2024 Architecture: LINUX Score: 52 12 109.202.202.202, 80 INIT7CH Switzerland 2->12 14 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->14 16 2 other IPs or domains 2->16 18 Multi AV Scanner detection for submitted file 2->18 20 Sample is packed with UPX 2->20 6 dash rm 2->6         started        8 dash rm 2->8         started        10 byte.mips.elf 2->10         started        signatures3 process4
SourceDetectionScannerLabelLink
byte.mips.elf44%VirustotalBrowse
byte.mips.elf53%ReversingLabsLinux.Trojan.Mirai
No Antivirus matches
No Antivirus matches
No Antivirus matches
No contacted domains info
NameSourceMaliciousAntivirus DetectionReputation
http://upx.sf.netbyte.mips.elffalse
    high
    • No. of IPs < 25%
    • 25% < No. of IPs < 50%
    • 50% < No. of IPs < 75%
    • 75% < No. of IPs
    IPDomainCountryFlagASNASN NameMalicious
    54.171.230.55
    unknownUnited States
    16509AMAZON-02USfalse
    109.202.202.202
    unknownSwitzerland
    13030INIT7CHfalse
    91.189.91.43
    unknownUnited Kingdom
    41231CANONICAL-ASGBfalse
    91.189.91.42
    unknownUnited Kingdom
    41231CANONICAL-ASGBfalse
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                                                                No created / dropped files found
                                                                File type:ELF 32-bit MSB executable, MIPS, MIPS-I version 1 (SYSV), statically linked, no section header
                                                                Entropy (8bit):7.929715859122557
                                                                TrID:
                                                                • ELF Executable and Linkable format (Linux) (4029/14) 50.16%
                                                                • ELF Executable and Linkable format (generic) (4004/1) 49.84%
                                                                File name:byte.mips.elf
                                                                File size:40'488 bytes
                                                                MD5:fba3a44ae65b05dd7bded33f629041fa
                                                                SHA1:e71ac9a00dc99a2709b653a2dd136fb70567507f
                                                                SHA256:955cc9b58a6f8f9f7f61708bce9005a00ff5a7e1e23f6d05d9dbb61e68b0b910
                                                                SHA512:3022a6b0c3cbf45c688f2ad27b24126f6b943c0a7515fa882ee8b156054d9734c21afb618ad0fc85e07faab912e88a1ffd7537ae1f38326da16800a14685f418
                                                                SSDEEP:768:0uh56tYJ0yB2iOx3rqzPP7hzvD5nZyrujqvZWuQKwEgJgGlzDpuWlq:Jh5Sm0iOZKvD5ZRNhVEWlq
                                                                TLSH:D903F12D070781BDED7B8E7652210BF92EB246FEE183ED587253855658C3430B2235E8
                                                                File Content Preview:.ELF.....................@.....4.........4. ...(.............@...@...........................A...A...................2).UPX!.X.....................U.......?.E.h4...@b..) ..]....E.....c.. ....M.P.,......UX......H0..|..M.....A*....j?.0.......L...)..........

                                                                ELF header

                                                                Class:ELF32
                                                                Data:2's complement, big endian
                                                                Version:1 (current)
                                                                Machine:MIPS R3000
                                                                Version Number:0x1
                                                                Type:EXEC (Executable file)
                                                                OS/ABI:UNIX - System V
                                                                ABI Version:0
                                                                Entry Point Address:0x4088a8
                                                                Flags:0x1007
                                                                ELF Header Size:52
                                                                Program Header Offset:52
                                                                Program Header Size:32
                                                                Number of Program Headers:2
                                                                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
                                                                LOAD0x00x4000000x4000000x9cf10x9cf17.93260x5R E0x10000
                                                                LOAD0x00x4100000x4100000x00x4c6180.00000x6RW 0x10000
                                                                TimestampSource PortDest PortSource IPDest IP
                                                                Dec 26, 2024 10:17:01.995997906 CET43928443192.168.2.2391.189.91.42
                                                                Dec 26, 2024 10:17:05.847256899 CET4433360654.171.230.55192.168.2.23
                                                                Dec 26, 2024 10:17:05.847430944 CET33606443192.168.2.2354.171.230.55
                                                                Dec 26, 2024 10:17:05.967103958 CET4433360654.171.230.55192.168.2.23
                                                                Dec 26, 2024 10:17:06.347415924 CET4251680192.168.2.23109.202.202.202
                                                                Dec 26, 2024 10:17:07.627285957 CET42836443192.168.2.2391.189.91.43
                                                                Dec 26, 2024 10:17:21.961405039 CET43928443192.168.2.2391.189.91.42
                                                                Dec 26, 2024 10:17:34.247662067 CET42836443192.168.2.2391.189.91.43
                                                                Dec 26, 2024 10:17:36.295461893 CET4251680192.168.2.23109.202.202.202
                                                                Dec 26, 2024 10:18:02.915894985 CET43928443192.168.2.2391.189.91.42

                                                                System Behavior

                                                                Start time (UTC):09:17:01
                                                                Start date (UTC):26/12/2024
                                                                Path:/tmp/byte.mips.elf
                                                                Arguments:/tmp/byte.mips.elf
                                                                File size:5777432 bytes
                                                                MD5 hash:0083f1f0e77be34ad27f849842bbb00c

                                                                Start time (UTC):09:17:04
                                                                Start date (UTC):26/12/2024
                                                                Path:/usr/bin/dash
                                                                Arguments:-
                                                                File size:129816 bytes
                                                                MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                                Start time (UTC):09:17:04
                                                                Start date (UTC):26/12/2024
                                                                Path:/usr/bin/rm
                                                                Arguments:rm -f /tmp/tmp.w3eAegH3jH /tmp/tmp.00Q8JysiGv /tmp/tmp.jGJssSbrMf
                                                                File size:72056 bytes
                                                                MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                                                Start time (UTC):09:17:04
                                                                Start date (UTC):26/12/2024
                                                                Path:/usr/bin/dash
                                                                Arguments:-
                                                                File size:129816 bytes
                                                                MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                                Start time (UTC):09:17:04
                                                                Start date (UTC):26/12/2024
                                                                Path:/usr/bin/rm
                                                                Arguments:rm -f /tmp/tmp.w3eAegH3jH /tmp/tmp.00Q8JysiGv /tmp/tmp.jGJssSbrMf
                                                                File size:72056 bytes
                                                                MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b