Joe Sandbox Cloud Basic Analysis Report
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Linux Analysis Report
efea6.elf

Overview

General Information

Sample name:efea6.elf
Analysis ID:1649553
MD5:d1486c0aebf8dcde87a4c158dc42ae0c
SHA1:7a7abaf83713fc6533a3bdf26655b704ece08ca8
SHA256:90f680d86eec3e6b865f23fe4332d4278c0158ae8b6b8af418b50e159e611310
Tags:elfuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100

Signatures

Multi AV Scanner detection for submitted file
Found strings indicative of a multi-platform dropper
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:1649553
Start date and time:2025-03-26 22:13:23 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 25s
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:efea6.elf
Detection:MAL
Classification:mal48.linELF@0/0@2/0

Runtime Messages

Command:/tmp/efea6.elf
PID:5488
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
  • efea6.elf (PID: 5488, Parent: 5412, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/efea6.elf
  • cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

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

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: efea6.elfReversingLabs: Detection: 30%
Source: efea6.elfString: /lib/systemd//usr/lib/systemd/system/system/bin//gm/bin//home/process//home/helper/home/davinci/z/bin//mnt/mtd//tmp/sqfs//usr/libexec//usr/sbin//z/zbin//usr/bin/bin//tmp/var/mnt/root/boot/home/dev/media/opt/../(deleted)x86armmipsmpslsh4wgetcurllynxftpftpgettftpscpaflaaarsyncpfclamscanreadelfizsnapstracelsofgdbpmapltraceptracewiresharktsharktcpdumpnetstatssnmaphping3tracerouteiptablesnftfirewalldauditctlselinuxapparmoraptdnfyumzypperpacmanemergebrewportnanovimvinvimgeditkateemacspkillkillallkillsystemctlnohuppythonpython3perlrubyluanodebashshkshzshfishvolatilitychkrootkitrkhunterradare2binwalkdockerpodmanlxcqemuvirshvboxmanagemountumountdfdulsblkblkidmkfsfdiskpartedobjdumpstringsxxdhexdumpncnetcatsocatjournalctldmesglogcattaillessgrepawksedtmux%s/%s/data/local/tmp/sbin/dev/null/dev/console/var/lib/dockerkworker/u8:0raw.awaken-network.net/proc/self/cmdline/proc/%d/statusName:-
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/efea6.elf (PID: 5488)Queries kernel information via 'uname': Jump to behavior
Source: efea6.elf, 5488.1.000055a2748f2000.000055a274a20000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: efea6.elf, 5488.1.00007ffd6f410000.00007ffd6f431000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/efea6.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/efea6.elf
Source: efea6.elfBinary or memory string: /lib/systemd//usr/lib/systemd/system/system/bin//gm/bin//home/process//home/helper/home/davinci/z/bin//mnt/mtd//tmp/sqfs//usr/libexec//usr/sbin//z/zbin//usr/bin/bin//tmp/var/mnt/root/boot/home/dev/media/opt/../(deleted)x86armmipsmpslsh4wgetcurllynxftpftpgettftpscpaflaaarsyncpfclamscanreadelfizsnapstracelsofgdbpmapltraceptracewiresharktsharktcpdumpnetstatssnmaphping3tracerouteiptablesnftfirewalldauditctlselinuxapparmoraptdnfyumzypperpacmanemergebrewportnanovimvinvimgeditkateemacspkillkillallkillsystemctlnohuppythonpython3perlrubyluanodebashshkshzshfishvolatilitychkrootkitrkhunterradare2binwalkdockerpodmanlxcqemuvirshvboxmanagemountumountdfdulsblkblkidmkfsfdiskpartedobjdumpstringsxxdhexdumpncnetcatsocatjournalctldmesglogcattaillessgrepawksedtmux%s/%s/data/local/tmp/sbin/dev/null/dev/console/var/lib/dockerkworker/u8:0raw.awaken-network.net/proc/self/cmdline/proc/%d/statusName:-
Source: efea6.elf, 5488.1.000055a2748f2000.000055a274a20000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: efea6.elf, 5488.1.00007ffd6f410000.00007ffd6f431000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: efea6.elf, 5488.1.00007ffd6f410000.00007ffd6f431000.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 Information1
Scripting		Valid AccountsWindows Management Instrumentation1
Scripting		Path 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

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Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Number of created Files
  • Is malicious
  • Internet
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1649553 Sample: efea6.elf Startdate: 26/03/2025 Architecture: LINUX Score: 48 8 daisy.ubuntu.com 2->8 10 Multi AV Scanner detection for submitted file 2->10 6 efea6.elf 2->6         started        signatures3 process4

Screenshots

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Thumbnails

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windows-stand

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

SourceDetectionScannerLabelLink
efea6.elf31%ReversingLabsLinux.Backdoor.Mirai

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.comvejfa5.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    efefa7.elfGet hashmaliciousMiraiBrowse
    • 162.213.35.25
    jfeeps.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    arm6.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    rjfe686.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    drea4.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    efjepc.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    bejv86.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.24
    weje64.elfGet hashmaliciousUnknownBrowse
    • 162.213.35.25
    x-8.6-.Sakura.elfGet hashmaliciousGafgyt, MiraiBrowse
    • 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):5.562744304879168
    TrID:
    • ELF Executable and Linkable format (generic) (4004/1) 100.00%
    File name:efea6.elf
    File size:167'644 bytes
    MD5:d1486c0aebf8dcde87a4c158dc42ae0c
    SHA1:7a7abaf83713fc6533a3bdf26655b704ece08ca8
    SHA256:90f680d86eec3e6b865f23fe4332d4278c0158ae8b6b8af418b50e159e611310
    SHA512:173ffcdd69de83407bad370cb42fe9b3fb5d08e7ebd7db4b95e3917ef71721ea4bde224616dfc7f89848cb9eaac0cf69bbff134cc20ea45d09f061c6641ba3a3
    SSDEEP:3072:Qvtd3yqYoVXo0RXZDS15RaV6QfasHw8eaokCk/YU:QvtdTvVX/XtS17asiVw8IkCk/t
    TLSH:EFF30A56B8819F11D5D112BAFE1E128E33231B78E3EE72139D246F24778A87B0E3B515
    File Content Preview:.ELF..............(.....T...4...........4. ...(.....................hC..hC..............lC..lC..hC...H..............Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../.X.......hC....-.@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:167124
    Section Header Size:40
    Number of Section Headers:13
    Header String Table Index:12

    Sections

    NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
    NULL0x00x00x00x00x0000
    .initPROGBITS0x80940x940x100x00x6AX004
    .textPROGBITS0x80b00xb00x2037c0x00x6AX0016
    .finiPROGBITS0x2842c0x2042c0x100x00x6AX004
    .rodataPROGBITS0x284400x204400x3f280x00x2A008
    .init_arrayINIT_ARRAY0x3436c0x243700x80x00x3WA004
    .fini_arrayFINI_ARRAY0x343740x243780x40x00x3WA004
    .data.rel.roPROGBITS0x3437c0x243800x780x00x3WA004
    .gotPROGBITS0x343f40x243f80x11c0x40x3WA004
    .dataPROGBITS0x345200x245240x47340x00x3WA0032
    .bssNOBITS0x38c580x28c580xc8c00x00x3WA008
    .ARM.attributesARM_ATTRIBUTES0x00x28c580x100x00x0001
    .shstrtabSTRTAB0x00x28c680x6a0x00x0001

    Program Segments

    TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
    LOAD0x00x80000x80000x243680x243685.96500x5R E0x8000.init .text .fini .rodata
    LOAD0x2436c0x3436c0x343680x48ec0x111ac0.59210x6RW 0x8000.init_array .fini_array .data.rel.ro .got .data .bss
    GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

    Network Behavior

    Download Network PCAP: filtered – full

    TimestampSource PortDest PortSource IPDest IP
    Mar 26, 2025 22:14:12.249962091 CET4653653192.168.2.141.1.1.1
    Mar 26, 2025 22:14:12.250066996 CET5708853192.168.2.141.1.1.1
    Mar 26, 2025 22:14:12.339869022 CET53570881.1.1.1192.168.2.14
    Mar 26, 2025 22:14:12.340387106 CET53465361.1.1.1192.168.2.14

    DNS Queries

    TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
    Mar 26, 2025 22:14:12.249962091 CET192.168.2.141.1.1.10xa7e0Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
    Mar 26, 2025 22:14:12.250066996 CET192.168.2.141.1.1.10xb0deStandard query (0)daisy.ubuntu.com28IN (0x0001)false

    DNS Answers

    TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
    Mar 26, 2025 22:14:12.340387106 CET1.1.1.1192.168.2.140xa7e0No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false
    Mar 26, 2025 22:14:12.340387106 CET1.1.1.1192.168.2.140xa7e0No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false

    System Behavior

    General

    Start time (UTC):21:14:10
    Start date (UTC):26/03/2025
    Path:/tmp/efea6.elf
    Arguments:/tmp/efea6.elf
    File size:4956856 bytes
    MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

    File Activities

    Process Activities

    System Activities