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Linux Analysis Report
.i.elf

Overview

General Information

Sample name:.i.elf
Analysis ID:1650874
MD5:599036c23303290f792425d9a56d6b47
SHA1:32a3f3645bce0078aacb7832bf77e02afc7e90f9
SHA256:6aed9d2c8d634250431b15b35dd08f0c86efc7c3ec01bd2b4506f0fa56160ab6
Tags:elfuser-abuse_ch
Infos:

Detection

Score:56
Range:0 - 100

Signatures

Antivirus / Scanner detection for submitted sample
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:1650874
Start date and time:2025-03-28 06:08:18 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 40s
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:mal56.linELF@0/0@0/0
Command:/tmp/.i.elf
PID:6229
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: 6229, Parent: 6154, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/.i.elf
  • dash New Fork (PID: 6309, Parent: 4331)
  • rm (PID: 6309, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.Xla4oeBV2z /tmp/tmp.l4ZvK98wVz /tmp/tmp.QUfKEzfCgW
  • dash New Fork (PID: 6310, Parent: 4331)
  • rm (PID: 6310, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.Xla4oeBV2z /tmp/tmp.l4ZvK98wVz /tmp/tmp.QUfKEzfCgW
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: .i.elfAvira: detected
Source: .i.elfVirustotal: Detection: 56%Perma Link
Source: .i.elfReversingLabs: Detection: 55%
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: mal56.linELF@0/0@0/0
Source: /usr/bin/dash (PID: 6309)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.Xla4oeBV2z /tmp/tmp.l4ZvK98wVz /tmp/tmp.QUfKEzfCgWJump to behavior
Source: /usr/bin/dash (PID: 6310)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.Xla4oeBV2z /tmp/tmp.l4ZvK98wVz /tmp/tmp.QUfKEzfCgWJump to behavior
Source: .i.elfSubmission file: segment LOAD with 7.9919 entropy (max. 8.0)
Source: /tmp/.i.elf (PID: 6229)Queries kernel information via 'uname': Jump to behavior
Source: .i.elf, 6229.1.000055de6830b000.000055de68392000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/mips
Source: .i.elf, 6229.1.000055de6830b000.000055de68392000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/mips
Source: .i.elf, 6229.1.00007ffedcf43000.00007ffedcf64000.rw-.sdmpBinary or memory string: /usr/bin/qemu-mips
Source: .i.elf, 6229.1.00007ffedcf43000.00007ffedcf64000.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, 6229.1.00007ffedcf43000.00007ffedcf64000.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: 1650874 Sample: .i.elf Startdate: 28/03/2025 Architecture: LINUX Score: 56 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 Antivirus / Scanner detection for submitted sample 2->18 20 Multi AV Scanner detection for submitted file 2->20 6 dash rm 2->6         started        8 dash rm 2->8         started        10 .i.elf 2->10         started        signatures3 process4
SourceDetectionScannerLabelLink
.i.elf56%VirustotalBrowse
.i.elf56%ReversingLabsLinux.Infostealer.Berbew
.i.elf100%AviraLINUX/Siggen.hyhfd
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
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                                                              No context
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                                                              CANONICAL-ASGBna.elfGet hashmaliciousPrometeiBrowse
                                                              • 91.189.91.42
                                                              na.elfGet hashmaliciousPrometeiBrowse
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                                                              CANONICAL-ASGBna.elfGet hashmaliciousPrometeiBrowse
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                                                              INIT7CHna.elfGet hashmaliciousPrometeiBrowse
                                                              • 109.202.202.202
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                                                              • 109.202.202.202
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                                                              • 109.202.202.202
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                                                              • 109.202.202.202
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                                                              • 109.202.202.202
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                                                              • 54.169.144.97
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                                                              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):7.991854940881502
                                                              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:31'680 bytes
                                                              MD5:599036c23303290f792425d9a56d6b47
                                                              SHA1:32a3f3645bce0078aacb7832bf77e02afc7e90f9
                                                              SHA256:6aed9d2c8d634250431b15b35dd08f0c86efc7c3ec01bd2b4506f0fa56160ab6
                                                              SHA512:e639f81ad67e7a975f43c17fe305e3a9dde3f594448c5fb5baae243eb3184afdb39460c5baf913dd14e8f5a84e35d8882409be9eb87f259d9c2577f2b9995f5b
                                                              SSDEEP:768:YTYIDfYG6ZmewZ59+Nw1qsREH20j7UNqVwZ:yYI0ARqw1qAEW67UIWZ
                                                              TLSH:AAE2F18732903B63E06255F8F3BDAF8A60163D689FFE1027A441362270B311D699D82F
                                                              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
                                                              LOAD0x00x1000000x1000000x142640x142647.99190x5R E0x10000
                                                              LOAD0xa6c00x47a6c00x47a6c00x00x00.00000x6RW 0x10000

                                                              Download Network PCAP: filteredfull

                                                              • Total Packets: 11
                                                              • 443 (HTTPS)
                                                              • 80 (HTTP)
                                                              TimestampSource PortDest PortSource IPDest IP
                                                              Mar 28, 2025 06:09:04.645215034 CET43928443192.168.2.2391.189.91.42
                                                              Mar 28, 2025 06:09:10.020396948 CET42836443192.168.2.2391.189.91.43
                                                              Mar 28, 2025 06:09:11.044171095 CET4251680192.168.2.23109.202.202.202
                                                              Mar 28, 2025 06:09:25.642093897 CET39246443192.168.2.2334.249.145.219
                                                              Mar 28, 2025 06:09:25.642126083 CET4433924634.249.145.219192.168.2.23
                                                              Mar 28, 2025 06:09:25.642328978 CET39246443192.168.2.2334.249.145.219
                                                              Mar 28, 2025 06:09:25.642728090 CET39246443192.168.2.2334.249.145.219
                                                              Mar 28, 2025 06:09:25.642748117 CET4433924634.249.145.219192.168.2.23
                                                              Mar 28, 2025 06:09:26.402127981 CET43928443192.168.2.2391.189.91.42
                                                              Mar 28, 2025 06:09:36.640587091 CET42836443192.168.2.2391.189.91.43
                                                              Mar 28, 2025 06:09:40.736099005 CET4251680192.168.2.23109.202.202.202
                                                              Mar 28, 2025 06:10:07.356496096 CET43928443192.168.2.2391.189.91.42
                                                              Mar 28, 2025 06:10:25.634546995 CET39246443192.168.2.2334.249.145.219
                                                              Mar 28, 2025 06:10:25.676347017 CET4433924634.249.145.219192.168.2.23
                                                              Mar 28, 2025 06:11:10.064589977 CET4433924634.249.145.219192.168.2.23

                                                              System Behavior

                                                              Start time (UTC):05:09:05
                                                              Start date (UTC):28/03/2025
                                                              Path:/tmp/.i.elf
                                                              Arguments:/tmp/.i.elf
                                                              File size:5777432 bytes
                                                              MD5 hash:0083f1f0e77be34ad27f849842bbb00c

                                                              Start time (UTC):05:10:24
                                                              Start date (UTC):28/03/2025
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):05:10:24
                                                              Start date (UTC):28/03/2025
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.Xla4oeBV2z /tmp/tmp.l4ZvK98wVz /tmp/tmp.QUfKEzfCgW
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                                              Start time (UTC):05:10:24
                                                              Start date (UTC):28/03/2025
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):05:10:24
                                                              Start date (UTC):28/03/2025
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.Xla4oeBV2z /tmp/tmp.l4ZvK98wVz /tmp/tmp.QUfKEzfCgW
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b