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Linux Analysis Report
.i.elf

Overview

General Information

Sample name:.i.elf
Analysis ID:1620035
MD5:083172927a566bae1425f38ac79c3725
SHA1:aa8af0a5387b26340b5fb83df6306a369d682d31
SHA256:6def771da6b2d8107872630e5612e1b568314fda027bd9cec0fe2359e63814d9
Tags:elfuser-abuse_ch
Infos:

Detection

Score:56
Range:0 - 100

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

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious
Joe Sandbox version:42.0.0 Malachite
Analysis ID:1620035
Start date and time:2025-02-20 15:57:19 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 24s
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
Command:/tmp/.i.elf
PID:5436
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: 5436, Parent: 5358, 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: 60%
Source: .i.elfVirustotal: Detection: 52%Perma Link
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: 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 7.9951 entropy (max. 8.0)
Source: /tmp/.i.elf (PID: 5436)Queries kernel information via 'uname': Jump to behavior
Source: .i.elf, 5436.1.000056276b2cf000.000056276b356000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/mips
Source: .i.elf, 5436.1.00007ffd68d07000.00007ffd68d28000.rw-.sdmpBinary or memory string: /usr/bin/qemu-mips
Source: .i.elf, 5436.1.00007ffd68d07000.00007ffd68d28000.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, 5436.1.00007ffd68d07000.00007ffd68d28000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: .i.elf, 5436.1.000056276b2cf000.000056276b356000.rw-.sdmpBinary or memory string: G.k'V @.k'V!/etc/qemu-binfmt/mips
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
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1620035 Sample: .i.elf Startdate: 20/02/2025 Architecture: LINUX Score: 56 8 daisy.ubuntu.com 2->8 10 Antivirus / Scanner detection for submitted sample 2->10 12 Multi AV Scanner detection for submitted file 2->12 6 .i.elf 2->6         started        signatures3 process4
SourceDetectionScannerLabelLink
.i.elf61%ReversingLabsLinux.Infostealer.Berbew
.i.elf52%VirustotalBrowse
.i.elf100%AviraJS/Berbew.igtnf
No Antivirus matches
No Antivirus matches
No Antivirus matches

Download Network PCAP: filteredfull

NameIPActiveMaliciousAntivirus DetectionReputation
daisy.ubuntu.com
162.213.35.24
truefalse
    high
    No contacted IP infos
    No context
    MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
    daisy.ubuntu.comdlr.spc.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    dlr.m68k.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    dlr.ppc.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    arm5.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    arm.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    mips.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    mpsl.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    m68k.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    i.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    dolP0blnO5.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):7.995141599899069
    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:48'888 bytes
    MD5:083172927a566bae1425f38ac79c3725
    SHA1:aa8af0a5387b26340b5fb83df6306a369d682d31
    SHA256:6def771da6b2d8107872630e5612e1b568314fda027bd9cec0fe2359e63814d9
    SHA512:ef5cb579fb8ac886a6c81fba3203d73e8c3b62edc664f353d4c5126afd7e1dc439d0e58d33840c70ab906e050d8e758213b75b45462bf12932ed86c7cc1ca5a7
    SSDEEP:768:YTYIDfYG6ZmewZ59+Nw1qsREH20j7UNqVwi7M8ghFM04ZTzEsDm1Xo0Wg3cA:yYI0ARqw1qAEW67UIWi7M8gmfmJo0Wg7
    TLSH:4023F24623663FB2D13158F5E7FCEF85A04A7D94AFE6181E7C227598A07135C28C8D1D
    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
    LOAD0x00x1000000x1000000x142640x142647.99510x5R E0x10000
    LOAD0xa6c00x47a6c00x47a6c00x00x00.00000x6RW 0x10000

    Download Network PCAP: filteredfull

    TimestampSource PortDest PortSource IPDest IP
    Feb 20, 2025 15:58:09.777302027 CET5502453192.168.2.131.1.1.1
    Feb 20, 2025 15:58:09.777363062 CET3818253192.168.2.131.1.1.1
    Feb 20, 2025 15:58:09.784923077 CET53381821.1.1.1192.168.2.13
    Feb 20, 2025 15:58:09.787116051 CET53550241.1.1.1192.168.2.13
    TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
    Feb 20, 2025 15:58:09.777302027 CET192.168.2.131.1.1.10x4847Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
    Feb 20, 2025 15:58:09.777363062 CET192.168.2.131.1.1.10x5bc1Standard query (0)daisy.ubuntu.com28IN (0x0001)false
    TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
    Feb 20, 2025 15:58:09.787116051 CET1.1.1.1192.168.2.130x4847No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
    Feb 20, 2025 15:58:09.787116051 CET1.1.1.1192.168.2.130x4847No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

    System Behavior

    Start time (UTC):14:58:07
    Start date (UTC):20/02/2025
    Path:/tmp/.i.elf
    Arguments:/tmp/.i.elf
    File size:5777432 bytes
    MD5 hash:0083f1f0e77be34ad27f849842bbb00c