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Linux Analysis Report
i.elf

Overview

General Information

Sample name:i.elf
Analysis ID:1545582
MD5:f44a72db2a8aa6b4f9a87f97eaecbe86
SHA1:548d0337a88b8a25eabf41707d4ae99af21e38f5
SHA256:d1bb733efbd718d4fa60bcf4bb1ba8647f4980f9c039921fbf1df753fdc42d54
Tags:elfuser-abuse_ch
Infos:

Detection

Score:56
Range:0 - 100
Whitelisted:false

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
ELF contains segments with high entropy indicating compressed/encrypted content
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:1545582
Start date and time:2024-10-30 17:40:28 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 35s
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:i.elf
Detection:MAL
Classification:mal56.linELF@0/0@2/0
  • VT rate limit hit for: i.elf
Command:/tmp/i.elf
PID:5641
Exit Code:139
Exit Code Info:SIGSEGV (11) Segmentation fault invalid memory reference
Killed:False
Standard Output:

Standard Error:qemu: uncaught target signal 11 (Segmentation fault) - core dumped
  • system is lnxubuntu20
  • i.elf (PID: 5641, Parent: 5561, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/i.elf
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: i.elfAvira: detected
Source: i.elfReversingLabs: Detection: 57%
Source: global trafficDNS traffic detected: DNS query: daisy.ubuntu.com
Source: LOAD without section mappingsProgram segment: 0x100000
Source: classification engineClassification label: mal56.linELF@0/0@2/0
Source: i.elfSubmission file: segment LOAD with 7.9967 entropy (max. 8.0)
Source: /tmp/i.elf (PID: 5641)Queries kernel information via 'uname': Jump to behavior
Source: i.elf, 5641.1.000055845585f000.00005584558e6000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/mips
Source: i.elf, 5641.1.000055845585f000.00005584558e6000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/mips
Source: i.elf, 5641.1.00007ffe2ad45000.00007ffe2ad66000.rw-.sdmpBinary or memory string: /usr/bin/qemu-mips
Source: i.elf, 5641.1.00007ffe2ad45000.00007ffe2ad66000.rw-.sdmpBinary or memory string: |x86_64/usr/bin/qemu-mips/tmp/i.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/i.elf
Source: i.elf, 5641.1.00007ffe2ad45000.00007ffe2ad66000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath Interception1
Obfuscated Files or Information
OS Credential Dumping11
Security Software Discovery
Remote ServicesData from Local System1
Non-Application Layer Protocol
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

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


windows-stand
SourceDetectionScannerLabelLink
i.elf58%ReversingLabsLinux.Infostealer.Berbew
i.elf100%AviraLINUX/Hajime.vwipw
No Antivirus matches
No Antivirus matches
No Antivirus matches
NameIPActiveMaliciousAntivirus DetectionReputation
daisy.ubuntu.com
162.213.35.24
truefalse
    unknown
    No contacted IP infos
    No context
    MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
    daisy.ubuntu.comla.bot.powerpc.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    ZsSQZvFF2r.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    la.bot.arm6.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    .report_system.elfGet hashmaliciousXmrigBrowse
    • 162.213.35.25
    j66VB9153M.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.24
    la.bot.arm5.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    la.bot.mips.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    la.bot.mipsel.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    la.bot.arm7.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    arm6.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    No context
    No context
    No context
    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):7.996735800201356
    TrID:
    • ELF Executable and Linkable format (Linux) (4029/14) 50.16%
    • ELF Executable and Linkable format (generic) (4004/1) 49.84%
    File name:i.elf
    File size:77'952 bytes
    MD5:f44a72db2a8aa6b4f9a87f97eaecbe86
    SHA1:548d0337a88b8a25eabf41707d4ae99af21e38f5
    SHA256:d1bb733efbd718d4fa60bcf4bb1ba8647f4980f9c039921fbf1df753fdc42d54
    SHA512:fa1f7352c72361c7726b6cc70a4aa9b6007cb5f0686ab428e9faf021ca1a064301245fc647d12ff2a697e23c218f8ff1c70a15f7c7deae1fa3eddf33c618114c
    SSDEEP:1536:yYI0ARqw1qAEW67UIWi7M8gmfmJo0WgswnD6Efyq8PxlRkp2K3/Jh:yYI0ARqw1qAEv7UIFM8oJorFquyjkRkx
    TLSH:2273121613A925A1663146F1E3FD2F88F94D6B5C8FF1BC24AC117CA8E93336D1CD9518
    File Content Preview:.ELF....................../....4.........4. ...(......................Bd..Bd.................G...G.................................................^.......?.E.h4...@b..) ..]..0...a.t<..mc.zy/..>..!c...gM\<j..W`xD'..}...\..].j.L.u...S..i...../..F...@`..'k.

    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:0x112fe8
    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
    LOAD0x00x1000000x1000000x142640x142647.99670x5R E0x10000
    LOAD0xa6c00x47a6c00x47a6c00x00x00.00000x6RW 0x10000
    TimestampSource PortDest PortSource IPDest IP
    Oct 30, 2024 17:41:30.308228970 CET4519253192.168.2.148.8.8.8
    Oct 30, 2024 17:41:30.313646078 CET53451928.8.8.8192.168.2.14
    Oct 30, 2024 17:41:30.313714027 CET4519253192.168.2.148.8.8.8
    Oct 30, 2024 17:41:30.313755035 CET4519253192.168.2.148.8.8.8
    Oct 30, 2024 17:41:30.313786983 CET4519253192.168.2.148.8.8.8
    Oct 30, 2024 17:41:30.319065094 CET53451928.8.8.8192.168.2.14
    Oct 30, 2024 17:41:30.319076061 CET53451928.8.8.8192.168.2.14
    Oct 30, 2024 17:41:30.905942917 CET53451928.8.8.8192.168.2.14
    Oct 30, 2024 17:41:30.906043053 CET4519253192.168.2.148.8.8.8
    Oct 30, 2024 17:41:32.919787884 CET53451928.8.8.8192.168.2.14
    Oct 30, 2024 17:41:32.920001030 CET4519253192.168.2.148.8.8.8
    Oct 30, 2024 17:41:32.935336113 CET53451928.8.8.8192.168.2.14
    TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
    Oct 30, 2024 17:41:30.313755035 CET192.168.2.148.8.8.80x8a3Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
    Oct 30, 2024 17:41:30.313786983 CET192.168.2.148.8.8.80xf786Standard query (0)daisy.ubuntu.com28IN (0x0001)false
    TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
    Oct 30, 2024 17:41:30.905942917 CET8.8.8.8192.168.2.140x8a3No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
    Oct 30, 2024 17:41:30.905942917 CET8.8.8.8192.168.2.140x8a3No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

    System Behavior

    Start time (UTC):16:41:28
    Start date (UTC):30/10/2024
    Path:/tmp/i.elf
    Arguments:/tmp/i.elf
    File size:5777432 bytes
    MD5 hash:0083f1f0e77be34ad27f849842bbb00c