Loading Joe Sandbox Report ...

Edit tour

Linux Analysis Report
4GtFbR4O3j.elf

Overview

General Information

Sample name:4GtFbR4O3j.elf
renamed because original name is a hash value
Original sample name:8264e58a77b9ca4424a8d9a9863e0ee6.elf
Analysis ID:1432417
MD5:8264e58a77b9ca4424a8d9a9863e0ee6
SHA1:7d1446707b7db9ed4317637264f6414c9a151ff6
SHA256:e1dbc46eea55f940b6f63822b88b45e4be4fd122deb867a55e13f7b3820678ec
Tags:32armelfmirai
Infos:

Detection

Gafgyt
Score:64
Range:0 - 100
Whitelisted:false

Signatures

Multi AV Scanner detection for submitted file
Yara detected Gafgyt
Deletes system log files
Manipulation of devices in /dev
Detected TCP or UDP traffic on non-standard ports
Sample has stripped symbol table
Sample listens on a socket
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

Analysis Advice

Static ELF header machine description suggests that the sample might not execute correctly on this machine.
Static ELF header machine description suggests that the sample might only run correctly on MIPS or ARM architectures.
Joe Sandbox version:40.0.0 Tourmaline
Analysis ID:1432417
Start date and time:2024-04-27 01:29:06 +02:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 34s
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:4GtFbR4O3j.elf
renamed because original name is a hash value
Original Sample Name:8264e58a77b9ca4424a8d9a9863e0ee6.elf
Detection:MAL
Classification:mal64.troj.evad.linELF@0/0@1/0
  • VT rate limit hit for: 4GtFbR4O3j.elf
Command:/tmp/4GtFbR4O3j.elf
PID:5433
Exit Code:0
Exit Code Info:
Killed:False
Standard Output:
guess what. you're retarded
Standard Error:
  • system is lnxubuntu20
  • cleanup
NameDescriptionAttributionBlogpost URLsLink
Bashlite, GafgytBashlite is a malware family which infects Linux systems in order to launch distributed denial-of-service attacks (DDoS). Originally it was also known under the name Bashdoor, but this term now refers to the exploit method used by the malware. It has been used to launch attacks of up to 400 Gbps.No Attributionhttps://malpedia.caad.fkie.fraunhofer.de/details/elf.bashlite
SourceRuleDescriptionAuthorStrings
4GtFbR4O3j.elfJoeSecurity_GafgytYara detected GafgytJoe Security
    SourceRuleDescriptionAuthorStrings
    5437.1.00007f57a4017000.00007f57a4039000.r-x.sdmpJoeSecurity_GafgytYara detected GafgytJoe Security
      5433.1.00007f57a4017000.00007f57a4039000.r-x.sdmpJoeSecurity_GafgytYara detected GafgytJoe Security
        No Snort rule has matched

        Click to jump to signature section

        Show All Signature Results

        AV Detection

        barindex
        Source: 4GtFbR4O3j.elfReversingLabs: Detection: 52%
        Source: global trafficTCP traffic: 192.168.2.13:49468 -> 94.156.248.19:5667
        Source: /tmp/4GtFbR4O3j.elf (PID: 5433)Socket: 127.0.0.1::46373Jump to behavior
        Source: unknownUDP traffic detected without corresponding DNS query: 51.77.149.139
        Source: global trafficDNS traffic detected: DNS query: servernoworky.geek
        Source: ELF static info symbol of initial sample.symtab present: no
        Source: classification engineClassification label: mal64.troj.evad.linELF@0/0@1/0

        Data Obfuscation

        barindex
        Source: /tmp/4GtFbR4O3j.elf (PID: 5440)Deleted: /dev/kmsgJump to behavior

        Hooking and other Techniques for Hiding and Protection

        barindex
        Source: /tmp/4GtFbR4O3j.elf (PID: 5440)Log files deleted: /var/log/kern.logJump to behavior
        Source: /tmp/4GtFbR4O3j.elf (PID: 5433)Queries kernel information via 'uname': Jump to behavior
        Source: 4GtFbR4O3j.elf, 5433.1.00007ffeca6f1000.00007ffeca712000.rw-.sdmp, 4GtFbR4O3j.elf, 5437.1.00007ffeca6f1000.00007ffeca712000.rw-.sdmpBinary or memory string: c_x86_64/usr/bin/qemu-arm/tmp/4GtFbR4O3j.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/4GtFbR4O3j.elf
        Source: 4GtFbR4O3j.elf, 5433.1.000055a125c5f000.000055a125dd5000.rw-.sdmp, 4GtFbR4O3j.elf, 5437.1.000055a125c5f000.000055a125dd5000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
        Source: 4GtFbR4O3j.elf, 5433.1.000055a125c5f000.000055a125dd5000.rw-.sdmp, 4GtFbR4O3j.elf, 5437.1.000055a125c5f000.000055a125dd5000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
        Source: 4GtFbR4O3j.elf, 5433.1.00007ffeca6f1000.00007ffeca712000.rw-.sdmp, 4GtFbR4O3j.elf, 5437.1.00007ffeca6f1000.00007ffeca712000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm

        Stealing of Sensitive Information

        barindex
        Source: Yara matchFile source: 4GtFbR4O3j.elf, type: SAMPLE
        Source: Yara matchFile source: 5437.1.00007f57a4017000.00007f57a4039000.r-x.sdmp, type: MEMORY
        Source: Yara matchFile source: 5433.1.00007f57a4017000.00007f57a4039000.r-x.sdmp, type: MEMORY

        Remote Access Functionality

        barindex
        Source: Yara matchFile source: 4GtFbR4O3j.elf, type: SAMPLE
        Source: Yara matchFile source: 5437.1.00007f57a4017000.00007f57a4039000.r-x.sdmp, type: MEMORY
        Source: Yara matchFile source: 5433.1.00007f57a4017000.00007f57a4039000.r-x.sdmp, type: MEMORY
        ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
        Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath Interception1
        Indicator Removal
        OS Credential Dumping11
        Security Software Discovery
        Remote ServicesData from Local System1
        Non-Standard Port
        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 Drive1
        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: 1432417 Sample: 4GtFbR4O3j.elf Startdate: 27/04/2024 Architecture: LINUX Score: 64 19 94.156.248.19, 49468, 5667 NETERRA-ASBG Bulgaria 2->19 21 servernoworky.geek 2->21 23 Multi AV Scanner detection for submitted file 2->23 25 Yara detected Gafgyt 2->25 8 4GtFbR4O3j.elf 2->8         started        signatures3 process4 process5 10 4GtFbR4O3j.elf 8->10         started        process6 12 4GtFbR4O3j.elf 10->12         started        15 4GtFbR4O3j.elf 10->15         started        17 4GtFbR4O3j.elf 10->17         started        signatures7 27 Manipulation of devices in /dev 12->27 29 Deletes system log files 12->29

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


        windows-stand
        SourceDetectionScannerLabelLink
        4GtFbR4O3j.elf53%ReversingLabsLinux.Trojan.Mirai
        No Antivirus matches
        No Antivirus matches
        No Antivirus matches
        NameIPActiveMaliciousAntivirus DetectionReputation
        servernoworky.geek
        94.156.248.18
        truefalse
          unknown
          • No. of IPs < 25%
          • 25% < No. of IPs < 50%
          • 50% < No. of IPs < 75%
          • 75% < No. of IPs
          IPDomainCountryFlagASNASN NameMalicious
          94.156.248.19
          unknownBulgaria
          34224NETERRA-ASBGfalse
          No context
          MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
          servernoworky.geek93dYAEq6GA.elfGet hashmaliciousGafgytBrowse
          • 91.92.254.116
          MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
          NETERRA-ASBG93dYAEq6GA.elfGet hashmaliciousGafgytBrowse
          • 94.156.248.18
          ZcOjro0Chh.elfGet hashmaliciousMiraiBrowse
          • 212.73.131.205
          https://www.huiyuan-sh.com/Get hashmaliciousUnknownBrowse
          • 87.121.112.42
          https://www.cmmnamijedtovnuf.com/Get hashmaliciousUnknownBrowse
          • 87.121.112.42
          https://www.daopzzvefkdjrnbe.com/Get hashmaliciousUnknownBrowse
          • 87.121.112.42
          https://huiyuan-sh.com/Get hashmaliciousUnknownBrowse
          • 87.121.112.42
          J2NWKU2oJi.exeGet hashmaliciousAmadey, RHADAMANTHYSBrowse
          • 94.156.10.37
          https://zjxcjld.com/Get hashmaliciousUnknownBrowse
          • 87.121.112.41
          https://amqxk1.ru.com/sharepoint/msn-xls%20webshare%20document/onedrive/Get hashmaliciousHTMLPhisherBrowse
          • 87.121.112.7
          https://www.hawksapparels.com/Get hashmaliciousUnknownBrowse
          • 87.121.112.36
          No context
          No context
          No created / dropped files found
          File type:ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, stripped
          Entropy (8bit):5.4443429288231995
          TrID:
          • ELF Executable and Linkable format (generic) (4004/1) 100.00%
          File name:4GtFbR4O3j.elf
          File size:158'368 bytes
          MD5:8264e58a77b9ca4424a8d9a9863e0ee6
          SHA1:7d1446707b7db9ed4317637264f6414c9a151ff6
          SHA256:e1dbc46eea55f940b6f63822b88b45e4be4fd122deb867a55e13f7b3820678ec
          SHA512:bd6f173a7837e9577e4c1299c6f02e846238c8bda49b36e455e2d0fc582f21ff9f8f33fe99fc86a5034e283ce86e7ac560881fd13b506b881233500a66e699ac
          SSDEEP:1536:eUtrfELBafrgY6UJ9DSWbTeplGAJLrRADM1kVTsXhb8qBAIOF5JXbJu05eleRow+:JlfUafrvHClGoAqkV4Rb8QYr00FosI
          TLSH:45F30845FC519F26C6D212BBFB4E428D372A17A8D3EE720389255F25378B85B0E77242
          File Content Preview:.ELF...a..........(.........4....i......4. ...(.....................(...(................ ... ... ...H..............Q.td..................................-...L."....w..........0@-.\P...0....S.0...P@...0... ....R......0...0...........0... ....R..... 0....S

          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:0x8190
          Flags:0x202
          ELF Header Size:52
          Program Header Offset:52
          Program Header Size:32
          Number of Program Headers:3
          Section Header Offset:157968
          Section Header Size:40
          Number of Section Headers:10
          Header String Table Index:9
          NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
          NULL0x00x00x00x00x0000
          .initPROGBITS0x80940x940x180x00x6AX004
          .textPROGBITS0x80b00xb00x1e0340x00x6AX0016
          .finiPROGBITS0x260e40x1e0e40x140x00x6AX004
          .rodataPROGBITS0x260f80x1e0f80x34300x00x2A004
          .ctorsPROGBITS0x320000x220000xc0x00x3WA004
          .dtorsPROGBITS0x3200c0x2200c0x80x00x3WA004
          .dataPROGBITS0x320200x220200x48b00x00x3WA0032
          .bssNOBITS0x368d00x268d00xd5440x00x3WA004
          .shstrtabSTRTAB0x00x268d00x3e0x00x0001
          TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
          LOAD0x00x80000x80000x215280x215285.95280x5R E0x8000.init .text .fini .rodata
          LOAD0x220000x320000x320000x48d00x11e140.37140x6RW 0x8000.ctors .dtors .data .bss
          GNU_STACK0x00x00x00x00x00.00000x7RWE0x4
          TimestampSource PortDest PortSource IPDest IP
          Apr 27, 2024 01:29:52.542184114 CEST494685667192.168.2.1394.156.248.19
          Apr 27, 2024 01:29:52.803519964 CEST56674946894.156.248.19192.168.2.13
          Apr 27, 2024 01:29:52.803581953 CEST494685667192.168.2.1394.156.248.19
          Apr 27, 2024 01:29:52.803946018 CEST494685667192.168.2.1394.156.248.19
          Apr 27, 2024 01:29:53.073313951 CEST56674946894.156.248.19192.168.2.13
          Apr 27, 2024 01:29:53.073386908 CEST494685667192.168.2.1394.156.248.19
          Apr 27, 2024 01:29:53.335362911 CEST56674946894.156.248.19192.168.2.13
          Apr 27, 2024 01:30:07.805114031 CEST494685667192.168.2.1394.156.248.19
          Apr 27, 2024 01:30:08.066431046 CEST56674946894.156.248.19192.168.2.13
          Apr 27, 2024 01:30:08.066447973 CEST56674946894.156.248.19192.168.2.13
          Apr 27, 2024 01:30:08.066493034 CEST494685667192.168.2.1394.156.248.19
          Apr 27, 2024 01:30:23.331773996 CEST56674946894.156.248.19192.168.2.13
          Apr 27, 2024 01:30:23.331945896 CEST494685667192.168.2.1394.156.248.19
          Apr 27, 2024 01:30:38.596275091 CEST56674946894.156.248.19192.168.2.13
          Apr 27, 2024 01:30:38.596520901 CEST494685667192.168.2.1394.156.248.19
          Apr 27, 2024 01:30:53.858937979 CEST56674946894.156.248.19192.168.2.13
          Apr 27, 2024 01:30:53.859072924 CEST494685667192.168.2.1394.156.248.19
          Apr 27, 2024 01:31:09.122128963 CEST56674946894.156.248.19192.168.2.13
          Apr 27, 2024 01:31:09.122246981 CEST494685667192.168.2.1394.156.248.19
          Apr 27, 2024 01:31:24.388180017 CEST56674946894.156.248.19192.168.2.13
          Apr 27, 2024 01:31:24.388365030 CEST494685667192.168.2.1394.156.248.19
          Apr 27, 2024 01:31:38.139700890 CEST494685667192.168.2.1394.156.248.19
          Apr 27, 2024 01:31:38.407038927 CEST56674946894.156.248.19192.168.2.13
          Apr 27, 2024 01:31:38.407077074 CEST56674946894.156.248.19192.168.2.13
          Apr 27, 2024 01:31:38.407171965 CEST494685667192.168.2.1394.156.248.19
          Apr 27, 2024 01:31:53.798988104 CEST56674946894.156.248.19192.168.2.13
          Apr 27, 2024 01:31:53.799077988 CEST494685667192.168.2.1394.156.248.19
          TimestampSource PortDest PortSource IPDest IP
          Apr 27, 2024 01:29:47.956135988 CEST3749353192.168.2.1351.77.149.139
          Apr 27, 2024 01:29:52.541369915 CEST533749351.77.149.139192.168.2.13
          TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
          Apr 27, 2024 01:29:47.956135988 CEST192.168.2.1351.77.149.1390x1f8cStandard query (0)servernoworky.geekA (IP address)IN (0x0001)false
          TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
          Apr 27, 2024 01:29:52.541369915 CEST51.77.149.139192.168.2.130x1f8cNo error (0)servernoworky.geek94.156.248.18A (IP address)IN (0x0001)false
          Apr 27, 2024 01:29:52.541369915 CEST51.77.149.139192.168.2.130x1f8cNo error (0)servernoworky.geek91.92.254.116A (IP address)IN (0x0001)false
          Apr 27, 2024 01:29:52.541369915 CEST51.77.149.139192.168.2.130x1f8cNo error (0)servernoworky.geek31.220.1.44A (IP address)IN (0x0001)false
          Apr 27, 2024 01:29:52.541369915 CEST51.77.149.139192.168.2.130x1f8cNo error (0)servernoworky.geek85.239.33.65A (IP address)IN (0x0001)false
          Apr 27, 2024 01:29:52.541369915 CEST51.77.149.139192.168.2.130x1f8cNo error (0)servernoworky.geek94.156.248.20A (IP address)IN (0x0001)false
          Apr 27, 2024 01:29:52.541369915 CEST51.77.149.139192.168.2.130x1f8cNo error (0)servernoworky.geek94.156.248.19A (IP address)IN (0x0001)false

          System Behavior

          Start time (UTC):23:29:46
          Start date (UTC):26/04/2024
          Path:/tmp/4GtFbR4O3j.elf
          Arguments:/tmp/4GtFbR4O3j.elf
          File size:4956856 bytes
          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

          Start time (UTC):23:29:46
          Start date (UTC):26/04/2024
          Path:/tmp/4GtFbR4O3j.elf
          Arguments:-
          File size:4956856 bytes
          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

          Start time (UTC):23:29:46
          Start date (UTC):26/04/2024
          Path:/tmp/4GtFbR4O3j.elf
          Arguments:-
          File size:4956856 bytes
          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

          Start time (UTC):23:29:46
          Start date (UTC):26/04/2024
          Path:/tmp/4GtFbR4O3j.elf
          Arguments:-
          File size:4956856 bytes
          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

          Start time (UTC):23:29:46
          Start date (UTC):26/04/2024
          Path:/tmp/4GtFbR4O3j.elf
          Arguments:-
          File size:4956856 bytes
          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1