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Linux Analysis Report
i.elf

Overview

General Information

Sample name:i.elf
Analysis ID:1645563
MD5:9f997bd7b97b96a125c77014739fcc5a
SHA1:444c02c2a5574b4d067aeaef3abbce9ee3e7d420
SHA256:078168053711e2098c01a7dc17efaa6b48b5fe0a4bb6a48cad13aab9767ad75a
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
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:1645563
Start date and time:2025-03-21 22:22:18 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 38s
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:6239
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: 6239, Parent: 6161, MD5: 0083f1f0e77be34ad27f849842bbb00c) 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: 44%
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: unknownTCP traffic detected without corresponding DNS query: 91.189.91.43
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: 0x100000
Source: classification engineClassification label: mal48.linELF@0/0@0/0
Source: i.elfSubmission file: segment LOAD with 7.9966 entropy (max. 8.0)
Source: /tmp/i.elf (PID: 6239)Queries kernel information via 'uname': Jump to behavior
Source: i.elf, 6239.1.00005569468c6000.000055694694d000.rw-.sdmpBinary or memory string: 0tCiUPVmCiU
Source: i.elf, 6239.1.00005569468c6000.000055694694d000.rw-.sdmpBinary or memory string: FiU!/etc/qemu-binfmt/mips
Source: i.elf, 6239.1.00005569468c6000.000055694694d000.rw-.sdmpBinary or memory string: vmCiU
Source: i.elf, 6239.1.00005569468c6000.000055694694d000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/mips
Source: i.elf, 6239.1.00007ffc934b1000.00007ffc934d2000.rw-.sdmpBinary or memory string: /usr/bin/qemu-mips
Source: i.elf, 6239.1.00007ffc934b1000.00007ffc934d2000.rw-.sdmpBinary or memory string: 9]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, 6239.1.00005569468c6000.000055694694d000.rw-.sdmpBinary or memory string: PVmCiU
Source: i.elf, 6239.1.00007ffc934b1000.00007ffc934d2000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: i.elf, 6239.1.00005569468c6000.000055694694d000.rw-.sdmpBinary or memory string: vmCiUPHtCiU
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 ScriptsRootkitLSASS 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: 1645563 Sample: i.elf Startdate: 21/03/2025 Architecture: LINUX Score: 48 8 109.202.202.202, 80 INIT7CH Switzerland 2->8 10 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->10 12 91.189.91.43, 443 CANONICAL-ASGB United Kingdom 2->12 14 Multi AV Scanner detection for submitted file 2->14 6 i.elf 2->6         started        signatures3 process4
SourceDetectionScannerLabelLink
i.elf44%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
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
91.189.91.43na.elfGet hashmaliciousPrometeiBrowse
    na.elfGet hashmaliciousPrometeiBrowse
      bash.elfGet hashmaliciousGafgytBrowse
        cron.elfGet hashmaliciousGafgytBrowse
          sh.elfGet hashmaliciousGafgytBrowse
            na.elfGet hashmaliciousPrometeiBrowse
              sshd.elfGet hashmaliciousUnknownBrowse
                jwyt4py98x.m68k.elfGet hashmaliciousMiraiBrowse
                  jwyt4py98x.arm7.elfGet hashmaliciousMiraiBrowse
                    jwyt4py98x.mips.elfGet hashmaliciousMiraiBrowse
                      91.189.91.42na.elfGet hashmaliciousPrometeiBrowse
                        na.elfGet hashmaliciousPrometeiBrowse
                          bash.elfGet hashmaliciousGafgytBrowse
                            cron.elfGet hashmaliciousGafgytBrowse
                              sh.elfGet hashmaliciousGafgytBrowse
                                na.elfGet hashmaliciousPrometeiBrowse
                                  na.elfGet hashmaliciousPrometeiBrowse
                                    sshd.elfGet hashmaliciousUnknownBrowse
                                      jwyt4py98x.m68k.elfGet hashmaliciousMiraiBrowse
                                        jwyt4py98x.arm7.elfGet hashmaliciousMiraiBrowse
                                          No context
                                          MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
                                          CANONICAL-ASGBna.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          bash.elfGet hashmaliciousGafgytBrowse
                                          • 91.189.91.42
                                          wget.elfGet hashmaliciousGafgytBrowse
                                          • 185.125.190.26
                                          cron.elfGet hashmaliciousGafgytBrowse
                                          • 91.189.91.42
                                          sh.elfGet hashmaliciousGafgytBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          sshd.elfGet hashmaliciousUnknownBrowse
                                          • 91.189.91.42
                                          jwyt4py98x.m68k.elfGet hashmaliciousMiraiBrowse
                                          • 91.189.91.42
                                          CANONICAL-ASGBna.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          bash.elfGet hashmaliciousGafgytBrowse
                                          • 91.189.91.42
                                          wget.elfGet hashmaliciousGafgytBrowse
                                          • 185.125.190.26
                                          cron.elfGet hashmaliciousGafgytBrowse
                                          • 91.189.91.42
                                          sh.elfGet hashmaliciousGafgytBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          sshd.elfGet hashmaliciousUnknownBrowse
                                          • 91.189.91.42
                                          jwyt4py98x.m68k.elfGet hashmaliciousMiraiBrowse
                                          • 91.189.91.42
                                          INIT7CHna.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          bash.elfGet hashmaliciousGafgytBrowse
                                          • 109.202.202.202
                                          cron.elfGet hashmaliciousGafgytBrowse
                                          • 109.202.202.202
                                          sh.elfGet hashmaliciousGafgytBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          sshd.elfGet hashmaliciousUnknownBrowse
                                          • 109.202.202.202
                                          jwyt4py98x.m68k.elfGet hashmaliciousMiraiBrowse
                                          • 109.202.202.202
                                          jwyt4py98x.arm7.elfGet hashmaliciousMiraiBrowse
                                          • 109.202.202.202
                                          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):7.996611070844597
                                          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:66'526 bytes
                                          MD5:9f997bd7b97b96a125c77014739fcc5a
                                          SHA1:444c02c2a5574b4d067aeaef3abbce9ee3e7d420
                                          SHA256:078168053711e2098c01a7dc17efaa6b48b5fe0a4bb6a48cad13aab9767ad75a
                                          SHA512:10279471a34ec83578f88e928b0c7dd4c2ff5e3d7e07d7952ed3fe0b85dc97827cf45ba35f37784655b7824b41dc9675c370a499701765dd0fd3019d84659edc
                                          SSDEEP:1536:yYI0ARqw1qAEW67UIWi7M8gmfmJo0WgswnD6Efyq8Px1:yYI0ARqw1qAEv7UIFM8oJorFquyjQ
                                          TLSH:5D530202339A297196714AF1E7FDBB88E64E3D588FF26C146C117D68F93239D5CC8909
                                          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
                                          LOAD0x00x1000000x1000000x142640x142647.99660x5R E0x10000
                                          LOAD0xa6c00x47a6c00x47a6c00x00x00.00000x6RW 0x10000

                                          Download Network PCAP: filteredfull

                                          • Total Packets: 7
                                          • 443 (HTTPS)
                                          • 80 (HTTP)
                                          TimestampSource PortDest PortSource IPDest IP
                                          Mar 21, 2025 22:23:10.485215902 CET42836443192.168.2.2391.189.91.43
                                          Mar 21, 2025 22:23:11.765151978 CET4251680192.168.2.23109.202.202.202
                                          Mar 21, 2025 22:23:26.099145889 CET43928443192.168.2.2391.189.91.42
                                          Mar 21, 2025 22:23:36.337594986 CET42836443192.168.2.2391.189.91.43
                                          Mar 21, 2025 22:23:42.480988979 CET4251680192.168.2.23109.202.202.202
                                          Mar 21, 2025 22:24:07.053499937 CET43928443192.168.2.2391.189.91.42
                                          Mar 21, 2025 22:24:27.530513048 CET42836443192.168.2.2391.189.91.43

                                          System Behavior

                                          Start time (UTC):21:23:06
                                          Start date (UTC):21/03/2025
                                          Path:/tmp/i.elf
                                          Arguments:/tmp/i.elf
                                          File size:5777432 bytes
                                          MD5 hash:0083f1f0e77be34ad27f849842bbb00c