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Linux Analysis Report
.i.elf

Overview

General Information

Sample name:.i.elf
Analysis ID:1644541
MD5:91f2a116eb51cd8d6b7ac48f3ebcf175
SHA1:00d42b9b149d4945deea82b0683c7e4ffac32656
SHA256:fab331c0bf8cf49f4ed421551036c9ce3cae26b33f140afe3a433d67f87301a8
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
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:1644541
Start date and time:2025-03-20 17:05:14 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 37s
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:6258
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: 6218, Parent: 4331)
  • rm (PID: 6218, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.CaiXXJ5TEg /tmp/tmp.axu4RWl8Lf /tmp/tmp.YtfOriqATu
  • dash New Fork (PID: 6219, Parent: 4331)
  • cat (PID: 6219, Parent: 4331, MD5: 7e9d213e404ad3bb82e4ebb2e1f2c1b3) Arguments: cat /tmp/tmp.CaiXXJ5TEg
  • dash New Fork (PID: 6220, Parent: 4331)
  • head (PID: 6220, Parent: 4331, MD5: fd96a67145172477dd57131396fc9608) Arguments: head -n 10
  • dash New Fork (PID: 6221, Parent: 4331)
  • tr (PID: 6221, Parent: 4331, MD5: fbd1402dd9f72d8ebfff00ce7c3a7bb5) Arguments: tr -d \\000-\\011\\013\\014\\016-\\037
  • dash New Fork (PID: 6222, Parent: 4331)
  • cut (PID: 6222, Parent: 4331, MD5: d8ed0ea8f22c0de0f8692d4d9f1759d3) Arguments: cut -c -80
  • dash New Fork (PID: 6225, Parent: 4331)
  • cat (PID: 6225, Parent: 4331, MD5: 7e9d213e404ad3bb82e4ebb2e1f2c1b3) Arguments: cat /tmp/tmp.CaiXXJ5TEg
  • dash New Fork (PID: 6226, Parent: 4331)
  • head (PID: 6226, Parent: 4331, MD5: fd96a67145172477dd57131396fc9608) Arguments: head -n 10
  • dash New Fork (PID: 6227, Parent: 4331)
  • tr (PID: 6227, Parent: 4331, MD5: fbd1402dd9f72d8ebfff00ce7c3a7bb5) Arguments: tr -d \\000-\\011\\013\\014\\016-\\037
  • dash New Fork (PID: 6228, Parent: 4331)
  • cut (PID: 6228, Parent: 4331, MD5: d8ed0ea8f22c0de0f8692d4d9f1759d3) Arguments: cut -c -80
  • dash New Fork (PID: 6229, Parent: 4331)
  • rm (PID: 6229, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.CaiXXJ5TEg /tmp/tmp.axu4RWl8Lf /tmp/tmp.YtfOriqATu
  • .i.elf (PID: 6258, Parent: 6152, 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.elfVirustotal: Detection: 21%Perma Link
Source: .i.elfReversingLabs: Detection: 52%
Source: global trafficTCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
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: 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: 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: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 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: 6218)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.CaiXXJ5TEg /tmp/tmp.axu4RWl8Lf /tmp/tmp.YtfOriqATuJump to behavior
Source: /usr/bin/dash (PID: 6229)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.CaiXXJ5TEg /tmp/tmp.axu4RWl8Lf /tmp/tmp.YtfOriqATuJump to behavior
Source: .i.elfSubmission file: segment LOAD with 7.9948 entropy (max. 8.0)
Source: /tmp/.i.elf (PID: 6258)Queries kernel information via 'uname': Jump to behavior
Source: .i.elf, 6258.1.00007fffce984000.00007fffce9a5000.rw-.sdmpBinary or memory string: ex86_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, 6258.1.0000560002a20000.0000560002b4e000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: .i.elf, 6258.1.00007fffce984000.00007fffce9a5000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: .i.elf, 6258.1.0000560002a20000.0000560002b4e000.rw-.sdmpBinary or memory string: V!/etc/qemu-binfmt/arm
Source: .i.elf, 6258.1.00007fffce984000.00007fffce9a5000.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: 1644541 Sample: .i.elf Startdate: 20/03/2025 Architecture: LINUX Score: 48 14 109.202.202.202, 80 INIT7CH Switzerland 2->14 16 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->16 18 91.189.91.43, 443 CANONICAL-ASGB United Kingdom 2->18 20 Multi AV Scanner detection for submitted file 2->20 6 dash rm .i.elf 2->6         started        8 dash rm 2->8         started        10 dash cut 2->10         started        12 7 other processes 2->12 signatures3 process4
SourceDetectionScannerLabelLink
.i.elf22%VirustotalBrowse
.i.elf53%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
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
109.202.202.202kpLwzBouH4.elfGet hashmaliciousUnknownBrowse
  • ch.archive.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_92.0%2bbuild3-0ubuntu0.20.04.1_amd64.deb
91.189.91.43main_x86_64.elfGet hashmaliciousMiraiBrowse
    main_m68k.elfGet hashmaliciousMiraiBrowse
      main_arm6.elfGet hashmaliciousMiraiBrowse
        na.elfGet hashmaliciousPrometeiBrowse
          na.elfGet hashmaliciousPrometeiBrowse
            na.elfGet hashmaliciousPrometeiBrowse
              na.elfGet hashmaliciousPrometeiBrowse
                dlr.m68k.elfGet hashmaliciousUnknownBrowse
                  dlr.mips.elfGet hashmaliciousUnknownBrowse
                    dlr.arm.elfGet hashmaliciousUnknownBrowse
                      91.189.91.42main_x86_64.elfGet hashmaliciousMiraiBrowse
                        main_m68k.elfGet hashmaliciousMiraiBrowse
                          main_arm6.elfGet hashmaliciousMiraiBrowse
                            na.elfGet hashmaliciousPrometeiBrowse
                              na.elfGet hashmaliciousPrometeiBrowse
                                na.elfGet hashmaliciousPrometeiBrowse
                                  na.elfGet hashmaliciousPrometeiBrowse
                                    dlr.m68k.elfGet hashmaliciousUnknownBrowse
                                      dlr.mips.elfGet hashmaliciousUnknownBrowse
                                        dlr.arm.elfGet hashmaliciousUnknownBrowse
                                          No context
                                          MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
                                          CANONICAL-ASGBmain_x86_64.elfGet hashmaliciousMiraiBrowse
                                          • 91.189.91.42
                                          main_m68k.elfGet hashmaliciousMiraiBrowse
                                          • 91.189.91.42
                                          main_arm6.elfGet hashmaliciousMiraiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          sshd.elfGet hashmaliciousUnknownBrowse
                                          • 185.125.190.26
                                          dlr.m68k.elfGet hashmaliciousUnknownBrowse
                                          • 91.189.91.42
                                          dlr.mips.elfGet hashmaliciousUnknownBrowse
                                          • 91.189.91.42
                                          CANONICAL-ASGBmain_x86_64.elfGet hashmaliciousMiraiBrowse
                                          • 91.189.91.42
                                          main_m68k.elfGet hashmaliciousMiraiBrowse
                                          • 91.189.91.42
                                          main_arm6.elfGet hashmaliciousMiraiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          sshd.elfGet hashmaliciousUnknownBrowse
                                          • 185.125.190.26
                                          dlr.m68k.elfGet hashmaliciousUnknownBrowse
                                          • 91.189.91.42
                                          dlr.mips.elfGet hashmaliciousUnknownBrowse
                                          • 91.189.91.42
                                          INIT7CHmain_x86_64.elfGet hashmaliciousMiraiBrowse
                                          • 109.202.202.202
                                          main_m68k.elfGet hashmaliciousMiraiBrowse
                                          • 109.202.202.202
                                          main_arm6.elfGet hashmaliciousMiraiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          dlr.m68k.elfGet hashmaliciousUnknownBrowse
                                          • 109.202.202.202
                                          dlr.mips.elfGet hashmaliciousUnknownBrowse
                                          • 109.202.202.202
                                          dlr.arm.elfGet hashmaliciousUnknownBrowse
                                          • 109.202.202.202
                                          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):7.994823949886226
                                          TrID:
                                          • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                          File name:.i.elf
                                          File size:44'800 bytes
                                          MD5:91f2a116eb51cd8d6b7ac48f3ebcf175
                                          SHA1:00d42b9b149d4945deea82b0683c7e4ffac32656
                                          SHA256:fab331c0bf8cf49f4ed421551036c9ce3cae26b33f140afe3a433d67f87301a8
                                          SHA512:2a7426e0c0dcdbcb776bcf24f453984eb96a248e4002bef84717c6210ec0ebb0e86998bf6a2d3702c5240d69779b97fe76f5663aab490caae8b85ab9e0863cb9
                                          SSDEEP:768:/kAKuobq1rduMGAXSEYEYv6DjbChaAUKvNvy0OQT23MTGU1Dl:87vbq1lGAXSEYQjbChaAU2yU23M51Dl
                                          TLSH:891302D0126127C89361DA3938BE702B8534662F33E52D403D57A24EF54B71698B7EBE
                                          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: 6
                                          • 443 (HTTPS)
                                          • 80 (HTTP)
                                          TimestampSource PortDest PortSource IPDest IP
                                          Mar 20, 2025 17:06:06.568357944 CET42836443192.168.2.2391.189.91.43
                                          Mar 20, 2025 17:06:07.592219114 CET4251680192.168.2.23109.202.202.202
                                          Mar 20, 2025 17:06:21.414380074 CET43928443192.168.2.2391.189.91.42
                                          Mar 20, 2025 17:06:33.701023102 CET42836443192.168.2.2391.189.91.43
                                          Mar 20, 2025 17:06:37.796268940 CET4251680192.168.2.23109.202.202.202
                                          Mar 20, 2025 17:07:02.369055986 CET43928443192.168.2.2391.189.91.42

                                          System Behavior

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/dash
                                          Arguments:-
                                          File size:129816 bytes
                                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/rm
                                          Arguments:rm -f /tmp/tmp.CaiXXJ5TEg /tmp/tmp.axu4RWl8Lf /tmp/tmp.YtfOriqATu
                                          File size:72056 bytes
                                          MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/dash
                                          Arguments:-
                                          File size:129816 bytes
                                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/cat
                                          Arguments:cat /tmp/tmp.CaiXXJ5TEg
                                          File size:43416 bytes
                                          MD5 hash:7e9d213e404ad3bb82e4ebb2e1f2c1b3

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/dash
                                          Arguments:-
                                          File size:129816 bytes
                                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/head
                                          Arguments:head -n 10
                                          File size:47480 bytes
                                          MD5 hash:fd96a67145172477dd57131396fc9608

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/dash
                                          Arguments:-
                                          File size:129816 bytes
                                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/tr
                                          Arguments:tr -d \\000-\\011\\013\\014\\016-\\037
                                          File size:51544 bytes
                                          MD5 hash:fbd1402dd9f72d8ebfff00ce7c3a7bb5

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/dash
                                          Arguments:-
                                          File size:129816 bytes
                                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/cut
                                          Arguments:cut -c -80
                                          File size:47480 bytes
                                          MD5 hash:d8ed0ea8f22c0de0f8692d4d9f1759d3

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/dash
                                          Arguments:-
                                          File size:129816 bytes
                                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/cat
                                          Arguments:cat /tmp/tmp.CaiXXJ5TEg
                                          File size:43416 bytes
                                          MD5 hash:7e9d213e404ad3bb82e4ebb2e1f2c1b3

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/dash
                                          Arguments:-
                                          File size:129816 bytes
                                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/head
                                          Arguments:head -n 10
                                          File size:47480 bytes
                                          MD5 hash:fd96a67145172477dd57131396fc9608

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/dash
                                          Arguments:-
                                          File size:129816 bytes
                                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/tr
                                          Arguments:tr -d \\000-\\011\\013\\014\\016-\\037
                                          File size:51544 bytes
                                          MD5 hash:fbd1402dd9f72d8ebfff00ce7c3a7bb5

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/dash
                                          Arguments:-
                                          File size:129816 bytes
                                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/cut
                                          Arguments:cut -c -80
                                          File size:47480 bytes
                                          MD5 hash:d8ed0ea8f22c0de0f8692d4d9f1759d3

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/dash
                                          Arguments:-
                                          File size:129816 bytes
                                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                          Start time (UTC):16:05:55
                                          Start date (UTC):20/03/2025
                                          Path:/usr/bin/rm
                                          Arguments:rm -f /tmp/tmp.CaiXXJ5TEg /tmp/tmp.axu4RWl8Lf /tmp/tmp.YtfOriqATu
                                          File size:72056 bytes
                                          MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                          Start time (UTC):16:06:03
                                          Start date (UTC):20/03/2025
                                          Path:/tmp/.i.elf
                                          Arguments:/tmp/.i.elf
                                          File size:4956856 bytes
                                          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1