Joe Sandbox Cloud Basic Analysis Report
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Linux Analysis Report
.i.elf

Overview

General Information

Sample name:.i.elf
Analysis ID:1634871
MD5:dbcc44901a5bf6ab5f211bdf0ef1f457
SHA1:ce0736e86ff6e44f139b65fb1b1fbe9592fb2663
SHA256:12b8b7de9a6820280254c35e9167da9c1cea07f8c1dcbeee7f3df1e2d9183fac
Tags:elfHajimeuser-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
Executes the "rm" command used to delete files or directories
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

General Information

Joe Sandbox version:42.0.0 Malachite
Analysis ID:1634871
Start date and time:2025-03-11 06:04:35 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 22s
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

Runtime Messages

Command:/tmp/.i.elf
PID:5422
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

Process Tree

  • system is lnxubuntu20
  • dash New Fork (PID: 5408, Parent: 3588)
  • rm (PID: 5408, Parent: 3588, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.17hkNGvJlH /tmp/tmp.cGBUFh04hi /tmp/tmp.R7y8kok2o9
  • dash New Fork (PID: 5409, Parent: 3588)
  • rm (PID: 5409, Parent: 3588, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.17hkNGvJlH /tmp/tmp.cGBUFh04hi /tmp/tmp.R7y8kok2o9
  • .i.elf (PID: 5422, Parent: 5343, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/.i.elf
  • cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

  • • AV Detection
  • • Networking
  • • System Summary
  • • Persistence and Installation Behavior
  • • Hooking and other Techniques for Hiding and Protection
  • • Malware Analysis System Evasion

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: .i.elfAvira: detected
Source: .i.elfVirustotal: Detection: 57%Perma Link
Source: .i.elfReversingLabs: Detection: 60%
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: /usr/bin/dash (PID: 5408)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.17hkNGvJlH /tmp/tmp.cGBUFh04hi /tmp/tmp.R7y8kok2o9Jump to behavior
Source: /usr/bin/dash (PID: 5409)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.17hkNGvJlH /tmp/tmp.cGBUFh04hi /tmp/tmp.R7y8kok2o9Jump to behavior
Source: .i.elfSubmission file: segment LOAD with 7.9956 entropy (max. 8.0)
Source: /tmp/.i.elf (PID: 5422)Queries kernel information via 'uname': Jump to behavior
Source: .i.elf, 5422.1.000055f800357000.000055f8003de000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/mips
Source: .i.elf, 5422.1.000055f800357000.000055f8003de000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/mips
Source: .i.elf, 5422.1.00007ffdd3f20000.00007ffdd3f41000.rw-.sdmpBinary or memory string: /usr/bin/qemu-mips
Source: .i.elf, 5422.1.00007ffdd3f20000.00007ffdd3f41000.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, 5422.1.00007ffdd3f20000.00007ffdd3f41000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Mitre Att&ck Matrix

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 Scripts1
File Deletion		LSASS MemoryApplication Window DiscoveryRemote Desktop ProtocolData from Removable Media1
Application Layer Protocol		Exfiltration Over BluetoothNetwork Denial of Service

Malware Configuration

⊘No configs have been found

Behavior Graph

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: 1634871 Sample: .i.elf Startdate: 11/03/2025 Architecture: LINUX Score: 56 10 daisy.ubuntu.com 2->10 12 Antivirus / Scanner detection for submitted sample 2->12 14 Multi AV Scanner detection for submitted file 2->14 6 dash rm .i.elf 2->6         started        8 dash rm 2->8         started        signatures3 process4

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

SourceDetectionScannerLabelLink
.i.elf57%VirustotalBrowse
.i.elf61%ReversingLabsLinux.Infostealer.Berbew
.i.elf100%AviraJS/Berbew.dqyyg

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

NameIPActiveMaliciousAntivirus DetectionReputation
daisy.ubuntu.com
162.213.35.25
truefalse
    		high

    World Map of Contacted IPs

    ⊘No contacted IP infos

    Joe Sandbox View / Context

    IPs

    ⊘No context

    Domains

    MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
    daisy.ubuntu.comlinux.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    morte.arm6.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    nabarm6.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    bin.sh.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.25
    debug.dbg.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.24
    boatnet.spc.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.24
    .i.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    sshd.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    mpsl.elfGet hashmaliciousMirai, MoobotBrowse
    • 162.213.35.24
    arm5.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.25

    ASNs

    ⊘No context

    JA3 Fingerprints

    ⊘No context

    Dropped Files

    ⊘No context

    Created / dropped Files

    ⊘No created / dropped files found

    Static File Info

    General

    File type:ELF 32-bit MSB executable, MIPS, MIPS-I version 1 (SYSV), statically linked, no section header
    Entropy (8bit):7.995640254661604
    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:53'504 bytes
    MD5:dbcc44901a5bf6ab5f211bdf0ef1f457
    SHA1:ce0736e86ff6e44f139b65fb1b1fbe9592fb2663
    SHA256:12b8b7de9a6820280254c35e9167da9c1cea07f8c1dcbeee7f3df1e2d9183fac
    SHA512:4dfa0763dc778336161a545dc3ad848e34083214f3a31f5d9801cb4aee0e4bd6598eb8555b0668cefefda2ebe5a24ad242b6b3a28994586459c02bda99873487
    SSDEEP:1536:yYI0ARqw1qAEW67UIWi7M8gmfmJo0WgswnD6H:yYI0ARqw1qAEv7UIFM8oJorFquH
    TLSH:9D33024523A72EB6C57548F1A3F8FF89B14A7EA49FE55C0A7C207659A47236C28C4C18
    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.

    Static ELF Info

    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

    Program Segments

    TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
    LOAD0x00x1000000x1000000x142640x142647.99560x5R E0x10000
    LOAD0xa6c00x47a6c00x47a6c00x00x00.00000x6RW 0x10000

    Network Behavior

    Download Network PCAP: filtered – full

    TimestampSource PortDest PortSource IPDest IP
    Mar 11, 2025 06:05:18.471972942 CET3842753192.168.2.131.1.1.1
    Mar 11, 2025 06:05:18.472040892 CET3424553192.168.2.131.1.1.1
    Mar 11, 2025 06:05:18.479010105 CET53342451.1.1.1192.168.2.13
    Mar 11, 2025 06:05:18.480607033 CET53384271.1.1.1192.168.2.13

    DNS Queries

    TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
    Mar 11, 2025 06:05:18.471972942 CET192.168.2.131.1.1.10xac88Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
    Mar 11, 2025 06:05:18.472040892 CET192.168.2.131.1.1.10x74bdStandard query (0)daisy.ubuntu.com28IN (0x0001)false

    DNS Answers

    TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
    Mar 11, 2025 06:05:18.480607033 CET1.1.1.1192.168.2.130xac88No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false
    Mar 11, 2025 06:05:18.480607033 CET1.1.1.1192.168.2.130xac88No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false

    System Behavior

    General

    Start time (UTC):05:05:08
    Start date (UTC):11/03/2025
    Path:/usr/bin/dash
    Arguments:-
    File size:129816 bytes
    MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

    Process Activities


    General

    Start time (UTC):05:05:08
    Start date (UTC):11/03/2025
    Path:/usr/bin/rm
    Arguments:rm -f /tmp/tmp.17hkNGvJlH /tmp/tmp.cGBUFh04hi /tmp/tmp.R7y8kok2o9
    File size:72056 bytes
    MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

    File Activities


    General

    Start time (UTC):05:05:08
    Start date (UTC):11/03/2025
    Path:/usr/bin/dash
    Arguments:-
    File size:129816 bytes
    MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

    Process Activities


    General

    Start time (UTC):05:05:08
    Start date (UTC):11/03/2025
    Path:/usr/bin/rm
    Arguments:rm -f /tmp/tmp.17hkNGvJlH /tmp/tmp.cGBUFh04hi /tmp/tmp.R7y8kok2o9
    File size:72056 bytes
    MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

    File Activities


    General

    Start time (UTC):05:05:16
    Start date (UTC):11/03/2025
    Path:/tmp/.i.elf
    Arguments:/tmp/.i.elf
    File size:5777432 bytes
    MD5 hash:0083f1f0e77be34ad27f849842bbb00c

    File Activities

    Process Activities

    System Activities