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Linux Analysis Report
.i.elf

Overview

General Information

Sample name:.i.elf
Analysis ID:1642430
MD5:fbeb935fb4327735d47b9e85adea8d4b
SHA1:2c9592d2caaadf920c39a87dca5dc3ea64db2ef7
SHA256:72677937334a9d862f96ecaffddbeda78e973923f31ee9102bf9d89f493b8cd9
Tags:elfMiraiuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100

Signatures

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
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious
Joe Sandbox version:42.0.0 Malachite
Analysis ID:1642430
Start date and time:2025-03-19 03:18:41 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 5m 3s
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:mal48.linELF@0/0@0/0
Command:/tmp/.i.elf
PID:6288
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
  • dash New Fork (PID: 6264, Parent: 4333)
  • rm (PID: 6264, Parent: 4333, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.jtU3qVyimC /tmp/tmp.RibCB5Je1R /tmp/tmp.HNV4Q7p5L0
  • dash New Fork (PID: 6265, Parent: 4333)
  • rm (PID: 6265, Parent: 4333, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.jtU3qVyimC /tmp/tmp.RibCB5Je1R /tmp/tmp.HNV4Q7p5L0
  • .i.elf (PID: 6288, Parent: 6190, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) 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.elfReversingLabs: Detection: 55%
Source: .i.elfVirustotal: Detection: 42%Perma Link
Source: global trafficTCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
Source: global trafficTCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: unknownTCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 443
Source: LOAD without section mappingsProgram segment: 0x10000
Source: classification engineClassification label: mal48.linELF@0/0@0/0
Source: /usr/bin/dash (PID: 6264)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.jtU3qVyimC /tmp/tmp.RibCB5Je1R /tmp/tmp.HNV4Q7p5L0Jump to behavior
Source: /usr/bin/dash (PID: 6265)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.jtU3qVyimC /tmp/tmp.RibCB5Je1R /tmp/tmp.HNV4Q7p5L0Jump to behavior
Source: .i.elfSubmission file: segment LOAD with 7.9948 entropy (max. 8.0)
Source: /tmp/.i.elf (PID: 6288)Queries kernel information via 'uname': Jump to behavior
Source: .i.elf, 6288.1.0000561ef8b7d000.0000561ef8cab000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: .i.elf, 6288.1.0000561ef8b7d000.0000561ef8cab000.rw-.sdmpBinary or memory string: V!/etc/qemu-binfmt/arm
Source: .i.elf, 6288.1.00007ffc23672000.00007ffc23693000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: .i.elf, 6288.1.00007ffc23672000.00007ffc23693000.rw-.sdmpBinary or memory string: Fx86_64/usr/bin/qemu-arm/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, 6288.1.00007ffc23672000.00007ffc23693000.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 Interception1
Obfuscated Files or Information
OS Credential Dumping11
Security Software Discovery
Remote ServicesData from Local System1
Encrypted Channel
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
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: 1642430 Sample: .i.elf Startdate: 19/03/2025 Architecture: LINUX Score: 48 10 109.202.202.202, 80 INIT7CH Switzerland 2->10 12 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 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
SourceDetectionScannerLabelLink
.i.elf56%ReversingLabsLinux.Backdoor.Mirai
.i.elf42%VirustotalBrowse
No Antivirus matches
No Antivirus matches
No Antivirus matches

Download Network PCAP: filteredfull

No contacted domains info
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs
IPDomainCountryFlagASNASN NameMalicious
109.202.202.202
unknownSwitzerland
13030INIT7CHfalse
91.189.91.42
unknownUnited Kingdom
41231CANONICAL-ASGBfalse
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                      No context
                      No context
                      No created / dropped files found
                      File type:ELF 32-bit LSB executable, ARM, EABI5 version 1 (GNU/Linux), statically linked, no section header
                      Entropy (8bit):7.994754196590341
                      TrID:
                      • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                      File name:.i.elf
                      File size:43'710 bytes
                      MD5:fbeb935fb4327735d47b9e85adea8d4b
                      SHA1:2c9592d2caaadf920c39a87dca5dc3ea64db2ef7
                      SHA256:72677937334a9d862f96ecaffddbeda78e973923f31ee9102bf9d89f493b8cd9
                      SHA512:efd3717236c64e7aeb09aa2ca17a03718faeb20155c7e113937f87fb0cfd9cfb6638e27d4c9ef236d006e9e7f5e5fba6b0db184692fd25305e4b92010c815e2f
                      SSDEEP:768:/kAKuobq1rduMGAXSEYEYv6DjbChaAUKvNvy0OQT23MTGU1Dk:87vbq1lGAXSEYQjbChaAU2yU23M51Dk
                      TLSH:B21302D0136127CC8361EA39386E701A8534651F32E92D003DA7A28EF54B71598B7EBE
                      File Content Preview:.ELF..............(......'..4...........4. ...(......................7...7.............................................c........................i..........?.E.h;....#..$..O.%.......y.A.U"......-R..e....<l>=).!...O........u.....`o..*ziy"......R..~@....x2'_

                      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 - Linux
                      ABI Version:0
                      Entry Point Address:0x22718
                      Flags:0x5000202
                      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
                      LOAD0x00x100000x100000x137e90x137e97.99480x5R E0x10000
                      LOAD0x6fc0x506fc0x506fc0x00x00.00000x6RW 0x10000

                      Download Network PCAP: filteredfull

                      • Total Packets: 3
                      • 443 (HTTPS)
                      • 80 (HTTP)
                      TimestampSource PortDest PortSource IPDest IP
                      Mar 19, 2025 03:20:14.025208950 CET4251680192.168.2.23109.202.202.202
                      Mar 19, 2025 03:20:18.120616913 CET43928443192.168.2.2391.189.91.42
                      Mar 19, 2025 03:20:59.075064898 CET43928443192.168.2.2391.189.91.42

                      System Behavior

                      Start time (UTC):02:19:55
                      Start date (UTC):19/03/2025
                      Path:/usr/bin/dash
                      Arguments:-
                      File size:129816 bytes
                      MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                      Start time (UTC):02:19:55
                      Start date (UTC):19/03/2025
                      Path:/usr/bin/rm
                      Arguments:rm -f /tmp/tmp.jtU3qVyimC /tmp/tmp.RibCB5Je1R /tmp/tmp.HNV4Q7p5L0
                      File size:72056 bytes
                      MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                      Start time (UTC):02:19:55
                      Start date (UTC):19/03/2025
                      Path:/usr/bin/dash
                      Arguments:-
                      File size:129816 bytes
                      MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                      Start time (UTC):02:19:55
                      Start date (UTC):19/03/2025
                      Path:/usr/bin/rm
                      Arguments:rm -f /tmp/tmp.jtU3qVyimC /tmp/tmp.RibCB5Je1R /tmp/tmp.HNV4Q7p5L0
                      File size:72056 bytes
                      MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                      Start time (UTC):02:19:58
                      Start date (UTC):19/03/2025
                      Path:/tmp/.i.elf
                      Arguments:/tmp/.i.elf
                      File size:4956856 bytes
                      MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1