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Linux Analysis Report
xd.arm5.elf

Overview

General Information

Sample name:xd.arm5.elf
Analysis ID:1580775
MD5:f045c51cd05035f4b7f8ba72a061bb0d
SHA1:7fd3f73455e32d92a283a60793c4cff93044b708
SHA256:3df735a6d46483ccb2cb3c1b8e0630baa3221dd038da1047267d08c6f7d00b37
Tags:elfuser-abuse_ch
Infos:

Detection

Mirai
Score:76
Range:0 - 100
Whitelisted:false

Signatures

Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Mirai
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)
Yara signature match

Classification

Joe Sandbox version:41.0.0 Charoite
Analysis ID:1580775
Start date and time:2024-12-26 05:20:03 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 51s
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:xd.arm5.elf
Detection:MAL
Classification:mal76.troj.evad.linELF@0/0@0/0
Command:/tmp/xd.arm5.elf
PID:6271
Exit Code:127
Exit Code Info:
Killed:False
Standard Output:

Standard Error:
  • system is lnxubuntu20
  • xd.arm5.elf (PID: 6271, Parent: 6194, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/xd.arm5.elf
  • cleanup
NameDescriptionAttributionBlogpost URLsLink
MiraiMirai is one of the first significant botnets targeting exposed networking devices running Linux. Found in August 2016 by MalwareMustDie, its name means "future" in Japanese. Nowadays it targets a wide range of networked embedded devices such as IP cameras, home routers (many vendors involved), and other IoT devices. Since the source code was published on "Hack Forums" many variants of the Mirai family appeared, infecting mostly home networks all around the world.No Attributionhttps://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai
SourceRuleDescriptionAuthorStrings
6271.1.00007f4be0017000.00007f4be0026000.r-x.sdmpJoeSecurity_Mirai_9Yara detected MiraiJoe Security
    6271.1.00007f4be0017000.00007f4be0026000.r-x.sdmpJoeSecurity_Mirai_5Yara detected MiraiJoe Security
      6271.1.00007f4be0017000.00007f4be0026000.r-x.sdmpMirai_Botnet_MalwareDetects Mirai Botnet MalwareFlorian Roth
      • 0xd91c:$x1: POST /cdn-cgi/
      • 0xddd4:$s1: LCOGQGPTGP
      6271.1.00007f4be0017000.00007f4be0026000.r-x.sdmpMAL_ELF_LNX_Mirai_Oct10_2Detects ELF malware Mirai relatedFlorian Roth
      • 0xd91c:$c01: 50 4F 53 54 20 2F 63 64 6E 2D 63 67 69 2F 00 00 20 48 54 54 50 2F 31 2E 31 0D 0A 55 73 65 72 2D 41 67 65 6E 74 3A 20 00 0D 0A 48 6F 73 74 3A
      Process Memory Space: xd.arm5.elf PID: 6271JoeSecurity_Mirai_9Yara detected MiraiJoe Security
        No Suricata rule has matched

        Click to jump to signature section

        Show All Signature Results

        AV Detection

        barindex
        Source: xd.arm5.elfVirustotal: Detection: 40%Perma Link
        Source: xd.arm5.elfReversingLabs: Detection: 57%
        Source: global trafficTCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
        Source: global trafficTCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
        Source: global trafficTCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
        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: 91.189.91.42
        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: xd.arm5.elfString found in binary or memory: http://upx.sf.net
        Source: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 443
        Source: unknownNetwork traffic detected: HTTP traffic on port 42836 -> 443

        System Summary

        barindex
        Source: 6271.1.00007f4be0017000.00007f4be0026000.r-x.sdmp, type: MEMORYMatched rule: Detects Mirai Botnet Malware Author: Florian Roth
        Source: 6271.1.00007f4be0017000.00007f4be0026000.r-x.sdmp, type: MEMORYMatched rule: Detects ELF malware Mirai related Author: Florian Roth
        Source: LOAD without section mappingsProgram segment: 0x8000
        Source: 6271.1.00007f4be0017000.00007f4be0026000.r-x.sdmp, type: MEMORYMatched rule: Mirai_Botnet_Malware date = 2016-10-04, hash5 = 420bf9215dfb04e5008c5e522eee9946599e2b323b17f17919cd802ebb012175, hash4 = 2efa09c124f277be2199bee58f49fc0ce6c64c0bef30079dfb3d94a6de492a69, hash3 = 20683ff7a5fec1237fc09224af40be029b9548c62c693844624089af568c89d4, hash2 = 05c78c3052b390435e53a87e3d31e9fb17f7c76bb4df2814313bca24735ce81c, hash1 = 05c78c3052b390435e53a87e3d31e9fb17f7c76bb4df2814313bca24735ce81c, author = Florian Roth, description = Detects Mirai Botnet Malware, hash10 = c61bf95146c68bfbbe01d7695337ed0e93ea759f59f651799f07eecdb339f83f, hash11 = d9573c3850e2ae35f371dff977fc3e5282a5e67db8e3274fd7818e8273fd5c89, hash12 = f1100c84abff05e0501e77781160d9815628e7fd2de9e53f5454dbcac7c84ca5, hash9 = bf0471b37dba7939524a30d7d5afc8fcfb8d4a7c9954343196737e72ea4e2dc4, hash8 = 89570ae59462e6472b6769545a999bde8457e47ae0d385caaa3499ab735b8147, hash7 = 70bb0ec35dd9afcfd52ec4e1d920e7045dc51dca0573cd4c753987c9d79405c0, hash6 = 62cdc8b7fffbaf5683a466f6503c03e68a15413a90f6afd5a13ba027631460c6, reference = Internal Research, license = https://creativecommons.org/licenses/by-nc/4.0/, hash13 = fb713ccf839362bf0fbe01aedd6796f4d74521b133011b408e42c1fd9ab8246b
        Source: 6271.1.00007f4be0017000.00007f4be0026000.r-x.sdmp, type: MEMORYMatched rule: MAL_ELF_LNX_Mirai_Oct10_2 date = 2018-10-27, hash1 = fa0018e75f503f9748a5de0d14d4358db234f65e28c31c8d5878cc58807081c9, author = Florian Roth, description = Detects ELF malware Mirai related, reference = Internal Research
        Source: classification engineClassification label: mal76.troj.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 3.94 Copyright (C) 1996-2017 the UPX Team. All Rights Reserved. $
        Source: xd.arm5.elfSubmission file: segment LOAD with 7.9367 entropy (max. 8.0)
        Source: /tmp/xd.arm5.elf (PID: 6271)Queries kernel information via 'uname': Jump to behavior
        Source: xd.arm5.elf, 6271.1.00007fff13ce2000.00007fff13d03000.rw-.sdmpBinary or memory string: mx86_64/usr/bin/qemu-arm/tmp/xd.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/xd.arm5.elf
        Source: xd.arm5.elf, 6271.1.0000561d9a43e000.0000561d9a5ac000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
        Source: xd.arm5.elf, 6271.1.0000561d9a43e000.0000561d9a5ac000.rw-.sdmpBinary or memory string: V!/etc/qemu-binfmt/arm
        Source: xd.arm5.elf, 6271.1.00007fff13ce2000.00007fff13d03000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm

        Stealing of Sensitive Information

        barindex
        Source: Yara matchFile source: 6271.1.00007f4be0017000.00007f4be0026000.r-x.sdmp, type: MEMORY
        Source: Yara matchFile source: Process Memory Space: xd.arm5.elf PID: 6271, type: MEMORYSTR

        Remote Access Functionality

        barindex
        Source: Yara matchFile source: 6271.1.00007f4be0017000.00007f4be0026000.r-x.sdmp, type: MEMORY
        Source: Yara matchFile source: Process Memory Space: xd.arm5.elf PID: 6271, type: MEMORYSTR
        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
        Application Layer Protocol
        Exfiltration Over BluetoothNetwork Denial of Service
        No configs have been found

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


        windows-stand
        SourceDetectionScannerLabelLink
        xd.arm5.elf40%VirustotalBrowse
        xd.arm5.elf58%ReversingLabsLinux.Trojan.Mirai
        No Antivirus matches
        No Antivirus matches
        No Antivirus matches
        No contacted domains info
        NameSourceMaliciousAntivirus DetectionReputation
        http://upx.sf.netxd.arm5.elffalse
          high
          • No. of IPs < 25%
          • 25% < No. of IPs < 50%
          • 50% < No. of IPs < 75%
          • 75% < No. of IPs
          IPDomainCountryFlagASNASN NameMalicious
          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 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):7.934001458722945
                                                  TrID:
                                                  • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                                  File name:xd.arm5.elf
                                                  File size:26'292 bytes
                                                  MD5:f045c51cd05035f4b7f8ba72a061bb0d
                                                  SHA1:7fd3f73455e32d92a283a60793c4cff93044b708
                                                  SHA256:3df735a6d46483ccb2cb3c1b8e0630baa3221dd038da1047267d08c6f7d00b37
                                                  SHA512:1a46139ddccc3b7593be595637b52035f0f12126d545badf919be84a78d3d2e738779720ea4489d1209c7f1e971bf2bd3b621347a06091b5df44e14b7c03fdde
                                                  SSDEEP:768:xRSa8ZS/L6rze3OXrFKg9KZrqoDudGIs3UozYB:vSjFJXZBCJDudGza
                                                  TLSH:38C2E0742811A570D370023DFF9DD6475BA7D1F482E832091A501BFEA68B482B9BB78F
                                                  File Content Preview:.ELF...a..........(.........4...........4. ...(.....................?e..?e...............j..........................Q.td..............................CvUPX!........L...L.......q..........?.E.h;.}...^......>...f.Rt..p.d.y... ..m.......Aj..>.cx..../#w....._

                                                  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:0xd390
                                                  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
                                                  LOAD0x00x80000x80000x653f0x653f7.93670x5R E0x8000
                                                  LOAD0x6afc0x1eafc0x1eafc0x00x00.00000x6RW 0x8000
                                                  GNU_STACK0x00x00x00x00x00.00000x7RWE0x4
                                                  TimestampSource PortDest PortSource IPDest IP
                                                  Dec 26, 2024 05:21:08.417217970 CET43928443192.168.2.2391.189.91.42
                                                  Dec 26, 2024 05:21:13.792421103 CET42836443192.168.2.2391.189.91.43
                                                  Dec 26, 2024 05:21:28.894334078 CET43928443192.168.2.2391.189.91.42
                                                  Dec 26, 2024 05:21:35.037455082 CET4251680192.168.2.23109.202.202.202
                                                  Dec 26, 2024 05:21:41.180702925 CET42836443192.168.2.2391.189.91.43
                                                  Dec 26, 2024 05:22:09.848747969 CET43928443192.168.2.2391.189.91.42

                                                  System Behavior

                                                  Start time (UTC):04:21:07
                                                  Start date (UTC):26/12/2024
                                                  Path:/tmp/xd.arm5.elf
                                                  Arguments:/tmp/xd.arm5.elf
                                                  File size:4956856 bytes
                                                  MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1