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Linux Analysis Report
jkse.arm6.elf

Overview

General Information

Sample name:jkse.arm6.elf
Analysis ID:1643723
MD5:ec9d27d0b5fa742077a15967d33c2672
SHA1:c6c04d730d40d8b403ccdde553d1d36137878e8f
SHA256:955b98548a20d439f508ac71e22955df253c74e57b5f91a526f2cd0666436450
Tags:elfuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100

Signatures

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
Joe Sandbox version:42.0.0 Malachite
Analysis ID:1643723
Start date and time:2025-03-20 02:52:14 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 32s
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:jkse.arm6.elf
Detection:MAL
Classification:mal48.linELF@0/0@2/0
Command:/tmp/jkse.arm6.elf
PID:5430
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
  • jkse.arm6.elf (PID: 5430, Parent: 5355, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/jkse.arm6.elf
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: jkse.arm6.elfVirustotal: Detection: 42%Perma Link
Source: jkse.arm6.elfReversingLabs: Detection: 44%
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: mal48.linELF@0/0@2/0
Source: /tmp/jkse.arm6.elf (PID: 5430)Queries kernel information via 'uname': Jump to behavior
Source: jkse.arm6.elf, 5430.1.0000559e11dc5000.0000559e11ef3000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: jkse.arm6.elf, 5430.1.0000559e11dc5000.0000559e11ef3000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: jkse.arm6.elf, 5430.1.00007ffd08fe0000.00007ffd09001000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: jkse.arm6.elf, 5430.1.00007ffd08fe0000.00007ffd09001000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/jkse.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/jkse.arm6.elf
Source: jkse.arm6.elf, 5430.1.00007ffd08fe0000.00007ffd09001000.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 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
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: 1643723 Sample: jkse.arm6.elf Startdate: 20/03/2025 Architecture: LINUX Score: 48 8 daisy.ubuntu.com 2->8 10 Multi AV Scanner detection for submitted file 2->10 6 jkse.arm6.elf 2->6         started        signatures3 process4

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


windows-stand
SourceDetectionScannerLabelLink
jkse.arm6.elf42%VirustotalBrowse
jkse.arm6.elf44%ReversingLabsLinux.Trojan.Mirai
No Antivirus matches
No Antivirus matches
No Antivirus matches

Download Network PCAP: filteredfull

NameIPActiveMaliciousAntivirus DetectionReputation
daisy.ubuntu.com
162.213.35.25
truefalse
    high
    No contacted IP infos
    No context
    MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
    daisy.ubuntu.comjkse.arm7.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    jkse.x86.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    bin.sh.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.24
    jkse.arm7.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.24
    jkse.arm.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    jkse.ppc.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    jkse.mips.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    jkse.mpsl.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    jkse.x86.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    .i.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    No context
    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):5.759488939781901
    TrID:
    • ELF Executable and Linkable format (generic) (4004/1) 100.00%
    File name:jkse.arm6.elf
    File size:34'052 bytes
    MD5:ec9d27d0b5fa742077a15967d33c2672
    SHA1:c6c04d730d40d8b403ccdde553d1d36137878e8f
    SHA256:955b98548a20d439f508ac71e22955df253c74e57b5f91a526f2cd0666436450
    SHA512:a00edabb4f3aeea4731abbeefdc6fe5827a2491c99f8a8b3301cc5cf3e02facef60d715eff3884a85e19a8fd4aebeeb0b847ebde1d3f649056249b8e43bf1510
    SSDEEP:768:/4ynotWU8LJi4hVAkRU2Kwm8bIKUBiJvD0aBiAeDVv6iC:/5ntLJhPEQIliJv4aBiVC
    TLSH:3CE2E65AF9819B01D5C5127AFE1E124E3713076CE3DEA3269F247F217B8756B0B3A805
    File Content Preview:.ELF..............(.....T...4...$.......4. ...(.....................T{..T{...............................z..........Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../...............-.@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:0x8154
    Flags:0x4000002
    ELF Header Size:52
    Program Header Offset:52
    Program Header Size:32
    Number of Program Headers:3
    Section Header Offset:33572
    Section Header Size:40
    Number of Section Headers:12
    Header String Table Index:11
    NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
    NULL0x00x00x00x00x0000
    .initPROGBITS0x80940x940x100x00x6AX004
    .textPROGBITS0x80b00xb00x74740x00x6AX0016
    .finiPROGBITS0xf5240x75240x100x00x6AX004
    .rodataPROGBITS0xf5340x75340x6200x00x2A004
    .init_arrayINIT_ARRAY0x100040x80080x40x00x3WA004
    .fini_arrayFINI_ARRAY0x100080x800c0x40x00x3WA004
    .gotPROGBITS0x100100x80140x740x40x3WA004
    .dataPROGBITS0x100840x80880x22c0x00x3WA004
    .bssNOBITS0x102b00x82b40xf7ec0x00x3WA004
    .ARM.attributesARM_ATTRIBUTES0x00x82b40x100x00x0001
    .shstrtabSTRTAB0x00x82c40x5d0x00x0001
    TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
    LOAD0x00x80000x80000x7b540x7b545.93340x5R E0x8000.init .text .fini .rodata
    LOAD0x80040x100040x100000x2b00x17a983.62430x6RW 0x8000.init_array .fini_array .got .data .bss
    GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

    Download Network PCAP: filteredfull

    TimestampSource PortDest PortSource IPDest IP
    Mar 20, 2025 02:53:05.735644102 CET4891553192.168.2.131.1.1.1
    Mar 20, 2025 02:53:05.735866070 CET4493453192.168.2.131.1.1.1
    Mar 20, 2025 02:53:05.826503992 CET53449341.1.1.1192.168.2.13
    Mar 20, 2025 02:53:05.859708071 CET53489151.1.1.1192.168.2.13
    TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
    Mar 20, 2025 02:53:05.735644102 CET192.168.2.131.1.1.10x7492Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
    Mar 20, 2025 02:53:05.735866070 CET192.168.2.131.1.1.10xbc7fStandard query (0)daisy.ubuntu.com28IN (0x0001)false
    TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
    Mar 20, 2025 02:53:05.859708071 CET1.1.1.1192.168.2.130x7492No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false
    Mar 20, 2025 02:53:05.859708071 CET1.1.1.1192.168.2.130x7492No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false

    System Behavior

    Start time (UTC):01:53:03
    Start date (UTC):20/03/2025
    Path:/tmp/jkse.arm6.elf
    Arguments:/tmp/jkse.arm6.elf
    File size:4956856 bytes
    MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1