Joe Sandbox Cloud Basic Analysis Report
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Linux Analysis Report
k03ldc.arm6.elf

Overview

General Information

Sample name:k03ldc.arm6.elf
Analysis ID:1650090
MD5:2d770321334489a5ad7888dd8adade91
SHA1:9e2ffd7e8af339f3d0036d190103610d0a981715
SHA256:8182623463497d155bbe6e7b65b101683b5aeb8e7a19ddc24225f1c2e44da4ba
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
Sample has stripped symbol table
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:1650090
Start date and time:2025-03-27 13:13:25 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 26s
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:k03ldc.arm6.elf
Detection:MAL
Classification:mal56.linELF@0/0@2/0

Runtime Messages

Command:/tmp/k03ldc.arm6.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

Process Tree

  • system is lnxubuntu20
  • k03ldc.arm6.elf (PID: 5436, Parent: 5357, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/k03ldc.arm6.elf
  • cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

  • • AV Detection
  • • Networking
  • • System Summary
  • • Malware Analysis System Evasion

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: k03ldc.arm6.elfAvira: detected
Source: k03ldc.arm6.elfVirustotal: Detection: 57%Perma Link
Source: k03ldc.arm6.elfReversingLabs: Detection: 63%
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: ELF static info symbol of initial sample.symtab present: no
Source: classification engineClassification label: mal56.linELF@0/0@2/0
Source: /tmp/k03ldc.arm6.elf (PID: 5436)Queries kernel information via 'uname': Jump to behavior
Source: k03ldc.arm6.elf, 5436.1.0000558b8f965000.0000558b8fa93000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: k03ldc.arm6.elf, 5436.1.00007fff10b88000.00007fff10ba9000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/k03ldc.arm6.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/k03ldc.arm6.elf
Source: k03ldc.arm6.elf, 5436.1.0000558b8f965000.0000558b8fa93000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: k03ldc.arm6.elf, 5436.1.00007fff10b88000.00007fff10ba9000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: k03ldc.arm6.elf, 5436.1.00007fff10b88000.00007fff10ba9000.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 InterceptionDirect Volume AccessOS 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

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: 1650090 Sample: k03ldc.arm6.elf Startdate: 27/03/2025 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 k03ldc.arm6.elf 2->6         started        signatures3 process4

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

SourceDetectionScannerLabelLink
k03ldc.arm6.elf58%VirustotalBrowse
k03ldc.arm6.elf64%ReversingLabsLinux.Trojan.Mirai
k03ldc.arm6.elf100%AviraEXP/ELF.Gafgyt.Z.A

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
162.213.35.24
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.comtftp.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    i.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.25
    i.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.25
    morte.spc.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    efjepc.elfGet hashmaliciousGafgyt, MiraiBrowse
    • 162.213.35.25
    morte.arm6.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    spc.elfGet hashmaliciousOkiruBrowse
    • 162.213.35.24
    resgod.ppc.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.24
    x64.elfGet hashmaliciousGafgyt, OkiruBrowse
    • 162.213.35.24
    resgod.arm7.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 LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
    Entropy (8bit):6.067614757284703
    TrID:
    • ELF Executable and Linkable format (generic) (4004/1) 100.00%
    File name:k03ldc.arm6.elf
    File size:72'172 bytes
    MD5:2d770321334489a5ad7888dd8adade91
    SHA1:9e2ffd7e8af339f3d0036d190103610d0a981715
    SHA256:8182623463497d155bbe6e7b65b101683b5aeb8e7a19ddc24225f1c2e44da4ba
    SHA512:8df86eb521174e90cf6907d0f236e0aa712f20b501af153bba8d28b0b8736951b50be84076f4dc24ecbd7d13d225cb7564b2c7c4491d1e52be4afe6e4f3b0709
    SSDEEP:1536:PUnzZPYuxb2sadpEHmVJ70qNd518NzbzIci9s0Mm1O:4PLxqfnPYqN7Ds0Mm1
    TLSH:5263F986BC409E10C6C60677FE2F114E3317579CF2DE72628E155F747B8B82B0E2A65A
    File Content Preview:.ELF..............(.....T...4...........4. ...(.........................................................4...........Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../...............-.@0....S

    Static ELF Info

    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:0x8154
    Flags:0x4000002
    ELF Header Size:52
    Program Header Offset:52
    Program Header Size:32
    Number of Program Headers:3
    Section Header Offset:71692
    Section Header Size:40
    Number of Section Headers:12
    Header String Table Index:11

    Sections

    NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
    NULL0x00x00x00x00x0000
    .initPROGBITS0x80940x940x100x00x6AX004
    .textPROGBITS0x80b00xb00x106800x00x6AX0016
    .finiPROGBITS0x187300x107300x100x00x6AX004
    .rodataPROGBITS0x187400x107400xd7c0x00x2A004
    .init_arrayINIT_ARRAY0x214c00x114c40x40x00x3WA004
    .fini_arrayFINI_ARRAY0x214c40x114c80x40x00x3WA004
    .gotPROGBITS0x214cc0x114d00x740x40x3WA004
    .dataPROGBITS0x215400x115440x2580x00x3WA004
    .bssNOBITS0x217980x1179c0x275c0x00x3WA004
    .ARM.attributesARM_ATTRIBUTES0x00x1179c0x100x00x0001
    .shstrtabSTRTAB0x00x117ac0x5d0x00x0001

    Program Segments

    TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
    LOAD0x00x80000x80000x114bc0x114bc6.08940x5R E0x8000.init .text .fini .rodata
    LOAD0x114c00x214c00x214bc0x2dc0xaa343.65230x6RW 0x8000.init_array .fini_array .got .data .bss
    GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

    Network Behavior

    Download Network PCAP: filtered – full

    TimestampSource PortDest PortSource IPDest IP
    Mar 27, 2025 13:14:14.632354975 CET3773553192.168.2.131.1.1.1
    Mar 27, 2025 13:14:14.632430077 CET5222853192.168.2.131.1.1.1
    Mar 27, 2025 13:14:14.720583916 CET53522281.1.1.1192.168.2.13
    Mar 27, 2025 13:14:14.720645905 CET53377351.1.1.1192.168.2.13

    DNS Queries

    TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
    Mar 27, 2025 13:14:14.632354975 CET192.168.2.131.1.1.10xe116Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
    Mar 27, 2025 13:14:14.632430077 CET192.168.2.131.1.1.10x4b55Standard query (0)daisy.ubuntu.com28IN (0x0001)false

    DNS Answers

    TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
    Mar 27, 2025 13:14:14.720645905 CET1.1.1.1192.168.2.130xe116No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
    Mar 27, 2025 13:14:14.720645905 CET1.1.1.1192.168.2.130xe116No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

    System Behavior

    General

    Start time (UTC):12:14:12
    Start date (UTC):27/03/2025
    Path:/tmp/k03ldc.arm6.elf
    Arguments:/tmp/k03ldc.arm6.elf
    File size:4956856 bytes
    MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

    File Activities

    Process Activities

    System Activities