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Linux Analysis Report
i.elf

Overview

General Information

Sample name:i.elf
Analysis ID:1647590
MD5:a6d2eeeae96be4e6e26d25a190af0916
SHA1:61137b50bcdc6360650612a026eade104963cf35
SHA256:a5df6d3076dbb1caa0fd1ec0d0873b5c03a25822a5c379a97c9af950c49e8296
Tags:elfuser-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
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious
Joe Sandbox version:42.0.0 Malachite
Analysis ID:1647590
Start date and time:2025-03-25 01:23:13 +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:i.elf
Detection:MAL
Classification:mal48.linELF@0/0@0/0
Command:/tmp/i.elf
PID:6227
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
  • i.elf (PID: 6227, Parent: 6143, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/i.elf
  • dash New Fork (PID: 6312, Parent: 4334)
  • rm (PID: 6312, Parent: 4334, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.rsJTmgFiLL /tmp/tmp.zv9nb0tg2R /tmp/tmp.F0zAKM7Zoy
  • dash New Fork (PID: 6313, Parent: 4334)
  • rm (PID: 6313, Parent: 4334, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.rsJTmgFiLL /tmp/tmp.zv9nb0tg2R /tmp/tmp.F0zAKM7Zoy
  • 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: 44%
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.43
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: 34.249.145.219
Source: unknownTCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknownTCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.43
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: 34.249.145.219
Source: unknownNetwork traffic detected: HTTP traffic on port 443 -> 39242
Source: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 39242 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 42836 -> 443
Source: LOAD without section mappingsProgram segment: 0x10000
Source: classification engineClassification label: mal48.linELF@0/0@0/0
Source: /usr/bin/dash (PID: 6312)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.rsJTmgFiLL /tmp/tmp.zv9nb0tg2R /tmp/tmp.F0zAKM7ZoyJump to behavior
Source: /usr/bin/dash (PID: 6313)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.rsJTmgFiLL /tmp/tmp.zv9nb0tg2R /tmp/tmp.F0zAKM7ZoyJump to behavior
Source: i.elfSubmission file: segment LOAD with 7.9947 entropy (max. 8.0)
Source: /tmp/i.elf (PID: 6227)Queries kernel information via 'uname': Jump to behavior
Source: i.elf, 6227.1.00007fff49a48000.00007fff49a69000.rw-.sdmpBinary or memory string: ``x86_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, 6227.1.000055a649a4b000.000055a649b79000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: i.elf, 6227.1.000055a649a4b000.000055a649b79000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: i.elf, 6227.1.00007fff49a48000.00007fff49a69000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: i.elf, 6227.1.00007fff49a48000.00007fff49a69000.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: 1647590 Sample: i.elf Startdate: 25/03/2025 Architecture: LINUX Score: 48 12 109.202.202.202, 80 INIT7CH Switzerland 2->12 14 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->14 16 2 other IPs or domains 2->16 18 Multi AV Scanner detection for submitted file 2->18 6 dash rm 2->6         started        8 dash rm 2->8         started        10 i.elf 2->10         started        signatures3 process4
SourceDetectionScannerLabelLink
i.elf44%ReversingLabsLinux.Backdoor.Mirai
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
34.249.145.219
unknownUnited States
16509AMAZON-02USfalse
109.202.202.202
unknownSwitzerland
13030INIT7CHfalse
91.189.91.43
unknownUnited Kingdom
41231CANONICAL-ASGBfalse
91.189.91.42
unknownUnited Kingdom
41231CANONICAL-ASGBfalse
MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
34.249.145.219na.elfGet hashmaliciousPrometeiBrowse
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                                                              No context
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                                                              CANONICAL-ASGBna.elfGet hashmaliciousPrometeiBrowse
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                                                              • 109.202.202.202
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                                                              • 109.202.202.202
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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):7.994717463450147
                                                              TrID:
                                                              • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                                              File name:i.elf
                                                              File size:43'880 bytes
                                                              MD5:a6d2eeeae96be4e6e26d25a190af0916
                                                              SHA1:61137b50bcdc6360650612a026eade104963cf35
                                                              SHA256:a5df6d3076dbb1caa0fd1ec0d0873b5c03a25822a5c379a97c9af950c49e8296
                                                              SHA512:0c3aa5cbe0991c983a30db3cc63fff09e74545add1eedd4385418cb1d96275aaabb592e2cab4e7b96d87ea93aeff3b17d1c2461a31c003f115b830338d83db70
                                                              SSDEEP:768:/kAKuobq1rduMGAXSEYEYv6DjbChaAUKvNvy0OQT23MTGU1Dl:87vbq1lGAXSEYQjbChaAU2yU23M51Dl
                                                              TLSH:E61302D1136127CC8361EE79387E701A8534651F32E92D003DA7928EF54B71594B7EBE
                                                              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
                                                              LOAD0x00x100000x100000x137e90x137e97.99470x5R E0x10000
                                                              LOAD0x6fc0x506fc0x506fc0x00x00.00000x6RW 0x10000

                                                              Download Network PCAP: filteredfull

                                                              • Total Packets: 11
                                                              • 443 (HTTPS)
                                                              • 80 (HTTP)
                                                              TimestampSource PortDest PortSource IPDest IP
                                                              Mar 25, 2025 01:23:55.147283077 CET43928443192.168.2.2391.189.91.42
                                                              Mar 25, 2025 01:24:00.774547100 CET42836443192.168.2.2391.189.91.43
                                                              Mar 25, 2025 01:24:02.054481030 CET4251680192.168.2.23109.202.202.202
                                                              Mar 25, 2025 01:24:15.620688915 CET43928443192.168.2.2391.189.91.42
                                                              Mar 25, 2025 01:24:20.951303005 CET39242443192.168.2.2334.249.145.219
                                                              Mar 25, 2025 01:24:20.951416969 CET4433924234.249.145.219192.168.2.23
                                                              Mar 25, 2025 01:24:20.951608896 CET39242443192.168.2.2334.249.145.219
                                                              Mar 25, 2025 01:24:20.952239990 CET39242443192.168.2.2334.249.145.219
                                                              Mar 25, 2025 01:24:20.952297926 CET4433924234.249.145.219192.168.2.23
                                                              Mar 25, 2025 01:24:27.906905890 CET42836443192.168.2.2391.189.91.43
                                                              Mar 25, 2025 01:24:32.002233028 CET4251680192.168.2.23109.202.202.202
                                                              Mar 25, 2025 01:24:56.575064898 CET43928443192.168.2.2391.189.91.42
                                                              Mar 25, 2025 01:25:20.944009066 CET39242443192.168.2.2334.249.145.219
                                                              Mar 25, 2025 01:25:20.984358072 CET4433924234.249.145.219192.168.2.23
                                                              Mar 25, 2025 01:25:58.699115038 CET4433924234.249.145.219192.168.2.23

                                                              System Behavior

                                                              Start time (UTC):00:23:54
                                                              Start date (UTC):25/03/2025
                                                              Path:/tmp/i.elf
                                                              Arguments:/tmp/i.elf
                                                              File size:4956856 bytes
                                                              MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

                                                              Start time (UTC):00:25:20
                                                              Start date (UTC):25/03/2025
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):00:25:20
                                                              Start date (UTC):25/03/2025
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.rsJTmgFiLL /tmp/tmp.zv9nb0tg2R /tmp/tmp.F0zAKM7Zoy
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                                              Start time (UTC):00:25:20
                                                              Start date (UTC):25/03/2025
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):00:25:20
                                                              Start date (UTC):25/03/2025
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.rsJTmgFiLL /tmp/tmp.zv9nb0tg2R /tmp/tmp.F0zAKM7Zoy
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b