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Linux Analysis Report
i.elf

Overview

General Information

Sample name:i.elf
Analysis ID:1646206
MD5:be2af5d908a06db0170358040c5e4548
SHA1:b93a91f6fc454675f57d8065236b1a21446f7148
SHA256:1a7fcc43ff665aff48c2e03f7fe261eb8e2550e4af519a6e89c3445f9dbed602
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:1646206
Start date and time:2025-03-23 16:37:12 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 41s
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:6228
Exit Code:127
Exit Code Info:
Killed:False
Standard Output:

Standard Error:
  • system is lnxubuntu20
  • i.elf (PID: 6228, Parent: 6149, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/i.elf
  • dash New Fork (PID: 6287, Parent: 4333)
  • rm (PID: 6287, Parent: 4333, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.US56yz9G11 /tmp/tmp.FwK5WUHYS9 /tmp/tmp.PvgXh18Kjz
  • dash New Fork (PID: 6288, Parent: 4333)
  • rm (PID: 6288, Parent: 4333, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.US56yz9G11 /tmp/tmp.FwK5WUHYS9 /tmp/tmp.PvgXh18Kjz
  • 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: 47%
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: 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: 91.189.91.42
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: unknownNetwork traffic detected: HTTP traffic on port 39246 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 443 -> 39246
Source: unknownNetwork traffic detected: HTTP traffic on port 42836 -> 443
Source: LOAD without section mappingsProgram segment: 0x100000
Source: classification engineClassification label: mal48.linELF@0/0@0/0
Source: /usr/bin/dash (PID: 6287)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.US56yz9G11 /tmp/tmp.FwK5WUHYS9 /tmp/tmp.PvgXh18KjzJump to behavior
Source: /usr/bin/dash (PID: 6288)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.US56yz9G11 /tmp/tmp.FwK5WUHYS9 /tmp/tmp.PvgXh18KjzJump to behavior
Source: i.elfSubmission file: segment LOAD with 7.9794 entropy (max. 8.0)
Source: /tmp/i.elf (PID: 6228)Queries kernel information via 'uname': Jump to behavior
Source: i.elf, 6228.1.00007fff973a3000.00007fff973c4000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-mips/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, 6228.1.0000557f17d85000.0000557f17e0c000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/mips
Source: i.elf, 6228.1.0000557f17d85000.0000557f17e0c000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/mips
Source: i.elf, 6228.1.00007fff973a3000.00007fff973c4000.rw-.sdmpBinary or memory string: /usr/bin/qemu-mips
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: 1646206 Sample: i.elf Startdate: 23/03/2025 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.elf47%ReversingLabsLinux.Infostealer.Berbew
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
    miner.elfGet hashmaliciousUnknownBrowse
      na.elfGet hashmaliciousPrometeiBrowse
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                      • ch.archive.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_92.0%2bbuild3-0ubuntu0.20.04.1_amd64.deb
                      91.189.91.43na.elfGet hashmaliciousPrometeiBrowse
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                                          91.189.91.42na.elfGet hashmaliciousPrometeiBrowse
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                                                          miner.elfGet hashmaliciousUnknownBrowse
                                                            morte.arm.elfGet hashmaliciousGafgyt, OkiruBrowse
                                                              No context
                                                              MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
                                                              CANONICAL-ASGBna.elfGet hashmaliciousPrometeiBrowse
                                                              • 91.189.91.42
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 185.125.190.26
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 91.189.91.42
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 91.189.91.42
                                                              morte.arm7.elfGet hashmaliciousOkiruBrowse
                                                              • 91.189.91.42
                                                              morte.sh4.elfGet hashmaliciousGafgyt, OkiruBrowse
                                                              • 91.189.91.42
                                                              morte.arm5.elfGet hashmaliciousOkiruBrowse
                                                              • 91.189.91.42
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 91.189.91.42
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 91.189.91.42
                                                              miner.elfGet hashmaliciousUnknownBrowse
                                                              • 91.189.91.42
                                                              CANONICAL-ASGBna.elfGet hashmaliciousPrometeiBrowse
                                                              • 91.189.91.42
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 185.125.190.26
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 91.189.91.42
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 91.189.91.42
                                                              morte.arm7.elfGet hashmaliciousOkiruBrowse
                                                              • 91.189.91.42
                                                              morte.sh4.elfGet hashmaliciousGafgyt, OkiruBrowse
                                                              • 91.189.91.42
                                                              morte.arm5.elfGet hashmaliciousOkiruBrowse
                                                              • 91.189.91.42
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 91.189.91.42
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 91.189.91.42
                                                              miner.elfGet hashmaliciousUnknownBrowse
                                                              • 91.189.91.42
                                                              INIT7CHna.elfGet hashmaliciousPrometeiBrowse
                                                              • 109.202.202.202
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 109.202.202.202
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 109.202.202.202
                                                              morte.arm7.elfGet hashmaliciousOkiruBrowse
                                                              • 109.202.202.202
                                                              morte.sh4.elfGet hashmaliciousGafgyt, OkiruBrowse
                                                              • 109.202.202.202
                                                              morte.arm5.elfGet hashmaliciousOkiruBrowse
                                                              • 109.202.202.202
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 109.202.202.202
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 109.202.202.202
                                                              miner.elfGet hashmaliciousUnknownBrowse
                                                              • 109.202.202.202
                                                              morte.arm.elfGet hashmaliciousGafgyt, OkiruBrowse
                                                              • 109.202.202.202
                                                              AMAZON-02USna.elfGet hashmaliciousPrometeiBrowse
                                                              • 52.43.119.120
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 52.43.119.120
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 52.43.119.120
                                                              miner.elfGet hashmaliciousUnknownBrowse
                                                              • 34.249.145.219
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 52.43.119.120
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 52.43.119.120
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 34.249.145.219
                                                              Aqua.mips.elfGet hashmaliciousUnknownBrowse
                                                              • 34.249.145.219
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 34.249.145.219
                                                              na.elfGet hashmaliciousPrometeiBrowse
                                                              • 52.43.119.120
                                                              No context
                                                              No context
                                                              No created / dropped files found
                                                              File type:ELF 32-bit MSB executable, MIPS, MIPS-I version 1 (SYSV), statically linked, no section header
                                                              Entropy (8bit):7.979483522075245
                                                              TrID:
                                                              • ELF Executable and Linkable format (Linux) (4029/14) 50.16%
                                                              • ELF Executable and Linkable format (generic) (4004/1) 49.84%
                                                              File name:i.elf
                                                              File size:85'232 bytes
                                                              MD5:be2af5d908a06db0170358040c5e4548
                                                              SHA1:b93a91f6fc454675f57d8065236b1a21446f7148
                                                              SHA256:1a7fcc43ff665aff48c2e03f7fe261eb8e2550e4af519a6e89c3445f9dbed602
                                                              SHA512:ed6b5ea5408d909e59adeb594463a04e7a90e854bfe55a30c051e549a29d9f0501c807582d62e76021099a675e8146b66ee452f9291b5a77baa003cec0fcc6da
                                                              SSDEEP:1536:yYI0ARqw1qAEW67UIWi7M8gm/mJo0WgswnD6Efyq8PxlRkp2K3/J1V+uBNu:yYI0ARqw1qAEv7UIFM8IJorFquyjkRks
                                                              TLSH:43831229135414E5D62681F1D3FD1B84AE981FA9CEE2EC147C12BC89EE333AD3CD2618
                                                              File Content Preview:.ELF....................../....4.........4. ...(......................Bd..Bd.................G...G.................................................^.......?.E.h4...@b..) ..]..0...a.t<..mc.zy/..>..!c...gM\<j..W`xD'..}...\..].j.L.u...S..i...../..F...@`..'k.

                                                              ELF header

                                                              Class:ELF32
                                                              Data:2's complement, big endian
                                                              Version:1 (current)
                                                              Machine:MIPS R3000
                                                              Version Number:0x1
                                                              Type:EXEC (Executable file)
                                                              OS/ABI:UNIX - System V
                                                              ABI Version:0
                                                              Entry Point Address:0x112fe8
                                                              Flags:0x1007
                                                              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
                                                              LOAD0x00x1000000x1000000x142640x142647.97940x5R E0x10000
                                                              LOAD0xa6c00x47a6c00x47a6c00x00x00.00000x6RW 0x10000

                                                              Download Network PCAP: filteredfull

                                                              • Total Packets: 11
                                                              • 443 (HTTPS)
                                                              • 80 (HTTP)
                                                              TimestampSource PortDest PortSource IPDest IP
                                                              Mar 23, 2025 16:38:00.014267921 CET43928443192.168.2.2391.189.91.42
                                                              Mar 23, 2025 16:38:05.645550966 CET42836443192.168.2.2391.189.91.43
                                                              Mar 23, 2025 16:38:06.413393974 CET4251680192.168.2.23109.202.202.202
                                                              Mar 23, 2025 16:38:19.346224070 CET39246443192.168.2.2334.249.145.219
                                                              Mar 23, 2025 16:38:19.346328020 CET4433924634.249.145.219192.168.2.23
                                                              Mar 23, 2025 16:38:19.346566916 CET39246443192.168.2.2334.249.145.219
                                                              Mar 23, 2025 16:38:19.347158909 CET39246443192.168.2.2334.249.145.219
                                                              Mar 23, 2025 16:38:19.347193956 CET4433924634.249.145.219192.168.2.23
                                                              Mar 23, 2025 16:38:20.235549927 CET43928443192.168.2.2391.189.91.42
                                                              Mar 23, 2025 16:38:32.521869898 CET42836443192.168.2.2391.189.91.43
                                                              Mar 23, 2025 16:38:36.617415905 CET4251680192.168.2.23109.202.202.202
                                                              Mar 23, 2025 16:39:01.189840078 CET43928443192.168.2.2391.189.91.42
                                                              Mar 23, 2025 16:39:19.338628054 CET39246443192.168.2.2334.249.145.219
                                                              Mar 23, 2025 16:39:19.384326935 CET4433924634.249.145.219192.168.2.23
                                                              Mar 23, 2025 16:40:03.498050928 CET4433924634.249.145.219192.168.2.23

                                                              System Behavior

                                                              Start time (UTC):15:37:59
                                                              Start date (UTC):23/03/2025
                                                              Path:/tmp/i.elf
                                                              Arguments:/tmp/i.elf
                                                              File size:5777432 bytes
                                                              MD5 hash:0083f1f0e77be34ad27f849842bbb00c

                                                              Start time (UTC):15:39:18
                                                              Start date (UTC):23/03/2025
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):15:39:18
                                                              Start date (UTC):23/03/2025
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.US56yz9G11 /tmp/tmp.FwK5WUHYS9 /tmp/tmp.PvgXh18Kjz
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                                              Start time (UTC):15:39:18
                                                              Start date (UTC):23/03/2025
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):15:39:18
                                                              Start date (UTC):23/03/2025
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.US56yz9G11 /tmp/tmp.FwK5WUHYS9 /tmp/tmp.PvgXh18Kjz
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b