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Linux Analysis Report
armv7l.elf

Overview

General Information

Sample name:armv7l.elf
Analysis ID:1580564
MD5:a4af1bf210b0d5696fd750eea9d47363
SHA1:3f2245b7d2bf474d7717613aa89c99860aa9a329
SHA256:74d1241335110a89006abe79ec100ff80eaa51b872f94294a20687a948545f7d
Tags:elfuser-abuse_ch
Infos:

Detection

Score:60
Range:0 - 100
Whitelisted:false

Signatures

Multi AV Scanner detection for submitted file
Opens /sys/class/net/* files useful for querying network interface information
Performs DNS TXT record lookups
Sample deletes itself
Detected TCP or UDP traffic on non-standard ports
Sample has stripped symbol table
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

Joe Sandbox version:41.0.0 Charoite
Analysis ID:1580564
Start date and time:2024-12-25 07:57:10 +01:00
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:armv7l.elf
Detection:MAL
Classification:mal60.spyw.evad.linELF@0/0@4/0
  • VT rate limit hit for: armv7l.elf
Command:/tmp/armv7l.elf
PID:5489
Exit Code:0
Exit Code Info:
Killed:False
Standard Output:
Firmware update in progress
Standard Error:
  • system is lnxubuntu20
  • armv7l.elf (PID: 5489, Parent: 5413, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/armv7l.elf
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: armv7l.elfReversingLabs: Detection: 21%

Networking

barindex
Source: /tmp/armv7l.elf (PID: 5491)Opens: /sys/class/net/Jump to behavior
Source: /tmp/armv7l.elf (PID: 5491)Opens: /sys/class/net/ens160/addressJump to behavior
Source: /tmp/armv7l.elf (PID: 5491)Opens: /sys/class/net/ens160/flagsJump to behavior
Source: /tmp/armv7l.elf (PID: 5491)Opens: /sys/class/net/ens160/carrierJump to behavior
Source: global trafficTCP traffic: 192.168.2.14:54806 -> 86.104.72.130:6666
Source: unknownTCP traffic detected without corresponding DNS query: 86.104.72.130
Source: unknownTCP traffic detected without corresponding DNS query: 86.104.72.130
Source: unknownTCP traffic detected without corresponding DNS query: 86.104.72.130
Source: unknownTCP traffic detected without corresponding DNS query: 86.104.72.130
Source: unknownTCP traffic detected without corresponding DNS query: 86.104.72.130
Source: unknownUDP traffic detected without corresponding DNS query: 172.217.192.127
Source: unknownUDP traffic detected without corresponding DNS query: 51.77.149.139
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: unknownUDP traffic detected without corresponding DNS query: 185.181.61.24
Source: global trafficDNS traffic detected: DNS query: iranistrash.libre
Source: global trafficDNS traffic detected: DNS query: daisy.ubuntu.com
Source: ELF static info symbol of initial sample.symtab present: no
Source: classification engineClassification label: mal60.spyw.evad.linELF@0/0@4/0

Hooking and other Techniques for Hiding and Protection

barindex
Source: /tmp/armv7l.elf (PID: 5489)File: /tmp/armv7l.elfJump to behavior
Source: /tmp/armv7l.elf (PID: 5489)Queries kernel information via 'uname': Jump to behavior
Source: /tmp/armv7l.elf (PID: 5491)Queries kernel information via 'uname': Jump to behavior
Source: armv7l.elf, 5489.1.00007ffe75da3000.00007ffe75dc4000.rw-.sdmpBinary or memory string: .x86_64/usr/bin/qemu-arm/tmp/armv7l.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/armv7l.elf
Source: armv7l.elf, 5489.1.0000562b19497000.0000562b195e6000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: armv7l.elf, 5489.1.00007ffe75da3000.00007ffe75dc4000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: armv7l.elf, 5489.1.0000562b19497000.0000562b195e6000.rw-.sdmpBinary or memory string: +V!/etc/qemu-binfmt/arm

HIPS / PFW / Operating System Protection Evasion

barindex
Source: TrafficDNS traffic detected: queries for: iranistrash.libre
Source: TrafficDNS traffic detected: queries for: iranistrash.libre
ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath Interception1
File Deletion
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: 1580564 Sample: armv7l.elf Startdate: 25/12/2024 Architecture: LINUX Score: 60 18 iranistrash.libre 2->18 20 86.104.72.130, 54806, 6666 TELE-ROM-ASstrAleeaPaciiBlB5Ap16RO Romania 2->20 22 2 other IPs or domains 2->22 24 Multi AV Scanner detection for submitted file 2->24 8 armv7l.elf 2->8         started        signatures3 26 Performs DNS TXT record lookups 18->26 process4 signatures5 28 Sample deletes itself 8->28 11 armv7l.elf 8->11         started        process6 signatures7 30 Opens /sys/class/net/* files useful for querying network interface information 11->30 14 armv7l.elf 11->14         started        16 armv7l.elf 11->16         started        process8

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


windows-stand
SourceDetectionScannerLabelLink
armv7l.elf21%ReversingLabsLinux.Backdoor.Mirai
No Antivirus matches
No Antivirus matches
No Antivirus matches
NameIPActiveMaliciousAntivirus DetectionReputation
daisy.ubuntu.com
162.213.35.25
truefalse
    high
    iranistrash.libre
    unknown
    unknownfalse
      high
      • No. of IPs < 25%
      • 25% < No. of IPs < 50%
      • 50% < No. of IPs < 75%
      • 75% < No. of IPs
      IPDomainCountryFlagASNASN NameMalicious
      172.217.192.127
      unknownUnited States
      15169GOOGLEUSfalse
      86.104.72.130
      unknownRomania
      50636TELE-ROM-ASstrAleeaPaciiBlB5Ap16ROfalse
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                      • 86.104.72.130
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                      No context
                      No context
                      No created / dropped files found
                      File type:ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
                      Entropy (8bit):6.098068308986642
                      TrID:
                      • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                      File name:armv7l.elf
                      File size:96'796 bytes
                      MD5:a4af1bf210b0d5696fd750eea9d47363
                      SHA1:3f2245b7d2bf474d7717613aa89c99860aa9a329
                      SHA256:74d1241335110a89006abe79ec100ff80eaa51b872f94294a20687a948545f7d
                      SHA512:c59a41ef3c664240dc6669f8abb20e80fa1a8b6faf6e4ba7db214b761df08cbacd569846120a1e80a2b9ee48b849377827841738b7f87f64cf064bec939a1398
                      SSDEEP:1536:tMny3vTNYIULQHa8cz7sj2Uwd539NrlB83YqNsMQrUUvvfQ2dlb4ifd23Y:jmNLQHuzwZwft1+XyMQrUUvv3td2I
                      TLSH:0C93184ABD819B11D8E522BAFE2E018D33175BA8E3EE7112CD205F2577CAD2B0E77541
                      File Content Preview:.ELF..............(.........4....w......4. ...(........p.s...........................................t...t...............t...t...t..4...4D...............t...t...t..................Q.td..................................-...L..................@-.,@...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:UNIX - System V
                      ABI Version:0
                      Entry Point Address:0x8194
                      Flags:0x4000002
                      ELF Header Size:52
                      Program Header Offset:52
                      Program Header Size:32
                      Number of Program Headers:5
                      Section Header Offset:96156
                      Section Header Size:40
                      Number of Section Headers:16
                      Header String Table Index:15
                      NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                      NULL0x00x00x00x00x0000
                      .initPROGBITS0x80d40xd40x100x00x6AX004
                      .textPROGBITS0x80f00xf00x169d00x00x6AX0016
                      .finiPROGBITS0x1eac00x16ac00x100x00x6AX004
                      .rodataPROGBITS0x1ead00x16ad00x8cc0x00x2A004
                      .ARM.extabPROGBITS0x1f39c0x1739c0x180x00x2A004
                      .ARM.exidxARM_EXIDX0x1f3b40x173b40x1180x00x82AL204
                      .eh_framePROGBITS0x274cc0x174cc0x40x00x3WA004
                      .tbssNOBITS0x274d00x174d00x80x00x403WAT004
                      .init_arrayINIT_ARRAY0x274d00x174d00x40x00x3WA004
                      .fini_arrayFINI_ARRAY0x274d40x174d40x40x00x3WA004
                      .gotPROGBITS0x274dc0x174dc0xa80x40x3WA004
                      .dataPROGBITS0x275840x175840x17c0x00x3WA004
                      .bssNOBITS0x277000x177000x42000x00x3WA004
                      .ARM.attributesARM_ATTRIBUTES0x00x177000x160x00x0001
                      .shstrtabSTRTAB0x00x177160x830x00x0001
                      TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                      EXIDX0x173b40x1f3b40x1f3b40x1180x1184.38640x4R 0x4.ARM.exidx
                      LOAD0x00x80000x80000x174cc0x174cc6.11580x5R E0x8000.init .text .fini .rodata .ARM.extab .ARM.exidx
                      LOAD0x174cc0x274cc0x274cc0x2340x44342.88880x6RW 0x8000.eh_frame .tbss .init_array .fini_array .got .data .bss
                      TLS0x174d00x274d00x274d00x00x80.00000x4R 0x4.tbss
                      GNU_STACK0x00x00x00x00x00.00000x7RWE0x4
                      TimestampSource PortDest PortSource IPDest IP
                      Dec 25, 2024 07:58:05.026242018 CET548066666192.168.2.1486.104.72.130
                      Dec 25, 2024 07:58:05.145944118 CET66665480686.104.72.130192.168.2.14
                      Dec 25, 2024 07:58:05.146008015 CET548066666192.168.2.1486.104.72.130
                      Dec 25, 2024 07:58:05.146393061 CET548066666192.168.2.1486.104.72.130
                      Dec 25, 2024 07:58:05.265903950 CET66665480686.104.72.130192.168.2.14
                      Dec 25, 2024 07:58:06.234492064 CET66665480686.104.72.130192.168.2.14
                      Dec 25, 2024 07:58:06.234685898 CET548066666192.168.2.1486.104.72.130
                      Dec 25, 2024 07:59:06.292545080 CET548066666192.168.2.1486.104.72.130
                      Dec 25, 2024 07:59:06.412282944 CET66665480686.104.72.130192.168.2.14
                      TimestampSource PortDest PortSource IPDest IP
                      Dec 25, 2024 07:58:02.531550884 CET94433478192.168.2.14172.217.192.127
                      Dec 25, 2024 07:58:03.728425026 CET34789443172.217.192.127192.168.2.14
                      Dec 25, 2024 07:58:03.756428957 CET5417853192.168.2.1451.77.149.139
                      Dec 25, 2024 07:58:04.460640907 CET3705853192.168.2.141.1.1.1
                      Dec 25, 2024 07:58:04.460681915 CET4501553192.168.2.141.1.1.1
                      Dec 25, 2024 07:58:04.679245949 CET53370581.1.1.1192.168.2.14
                      Dec 25, 2024 07:58:04.683244944 CET53450151.1.1.1192.168.2.14
                      Dec 25, 2024 07:58:04.765145063 CET5417853192.168.2.14185.181.61.24
                      Dec 25, 2024 07:58:05.024758101 CET5354178185.181.61.24192.168.2.14
                      Dec 25, 2024 07:58:10.599695921 CET535417851.77.149.139192.168.2.14
                      TimestampSource IPDest IPChecksumCodeType
                      Dec 25, 2024 07:58:10.599807978 CET192.168.2.1451.77.149.1398917(Port unreachable)Destination Unreachable
                      TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
                      Dec 25, 2024 07:58:03.756428957 CET192.168.2.1451.77.149.1390x200cStandard query (0)iranistrash.libre16IN (0x0001)false
                      Dec 25, 2024 07:58:04.460640907 CET192.168.2.141.1.1.10x5194Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
                      Dec 25, 2024 07:58:04.460681915 CET192.168.2.141.1.1.10x3eb7Standard query (0)daisy.ubuntu.com28IN (0x0001)false
                      Dec 25, 2024 07:58:04.765145063 CET192.168.2.14185.181.61.240x5be2Standard query (0)iranistrash.libre16IN (0x0001)false
                      TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
                      Dec 25, 2024 07:58:04.679245949 CET1.1.1.1192.168.2.140x5194No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false
                      Dec 25, 2024 07:58:04.679245949 CET1.1.1.1192.168.2.140x5194No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
                      Dec 25, 2024 07:58:05.024758101 CET185.181.61.24192.168.2.140x5be2No error (0)iranistrash.libreTXT (Text strings)IN (0x0001)false
                      Dec 25, 2024 07:58:10.599695921 CET51.77.149.139192.168.2.140x200cNo error (0)iranistrash.libreTXT (Text strings)IN (0x0001)false

                      System Behavior

                      Start time (UTC):06:57:59
                      Start date (UTC):25/12/2024
                      Path:/tmp/armv7l.elf
                      Arguments:/tmp/armv7l.elf
                      File size:4956856 bytes
                      MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

                      Start time (UTC):06:58:01
                      Start date (UTC):25/12/2024
                      Path:/tmp/armv7l.elf
                      Arguments:-
                      File size:4956856 bytes
                      MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

                      Start time (UTC):06:58:02
                      Start date (UTC):25/12/2024
                      Path:/tmp/armv7l.elf
                      Arguments:-
                      File size:4956856 bytes
                      MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

                      Start time (UTC):06:58:02
                      Start date (UTC):25/12/2024
                      Path:/tmp/armv7l.elf
                      Arguments:-
                      File size:4956856 bytes
                      MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1