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Linux Analysis Report
.i.elf

Overview

General Information

Sample name:.i.elf
Analysis ID:1647216
MD5:9643c58f040ceada4b91e2c852b86235
SHA1:f256b25e042a44b520b6d6f52a77b4b051bcd37c
SHA256:4925fd872093dcf10c669a4f1036f5dea01733d18dfdef5f1fc5f8bb3df5ab85
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:1647216
Start date and time:2025-03-24 16:22:31 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 43s
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:6370
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: 6370, Parent: 6174, 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.elfReversingLabs: Detection: 55%
Source: .i.elfVirustotal: Detection: 52%Perma Link
Source: global trafficTCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global trafficTCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
Source: global trafficTCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknownTCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.43
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: .i.elfSubmission file: segment LOAD with 7.9973 entropy (max. 8.0)
Source: /tmp/.i.elf (PID: 6370)Queries kernel information via 'uname': Jump to behavior
Source: .i.elf, 6370.1.0000561a03563000.0000561a03691000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: .i.elf, 6370.1.00007ffee86aa000.00007ffee86cb000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: .i.elf, 6370.1.0000561a03563000.0000561a03691000.rw-.sdmpBinary or memory string: V!/etc/qemu-binfmt/arm
Source: .i.elf, 6370.1.00007ffee86aa000.00007ffee86cb000.rw-.sdmpBinary or memory string: hx86_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, 6370.1.00007ffee86aa000.00007ffee86cb000.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 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: 1647216 Sample: .i.elf Startdate: 24/03/2025 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.elf56%ReversingLabsLinux.Backdoor.Mirai
.i.elf52%VirustotalBrowse
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
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                                          No context
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                                          • 91.189.91.42
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                                          • 91.189.91.42
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                                          • 91.189.91.42
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                                          • 109.202.202.202
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                                          • 109.202.202.202
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                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
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                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
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                                          • 109.202.202.202
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                                          • 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):7.997341493153158
                                          TrID:
                                          • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                          File name:.i.elf
                                          File size:72'400 bytes
                                          MD5:9643c58f040ceada4b91e2c852b86235
                                          SHA1:f256b25e042a44b520b6d6f52a77b4b051bcd37c
                                          SHA256:4925fd872093dcf10c669a4f1036f5dea01733d18dfdef5f1fc5f8bb3df5ab85
                                          SHA512:0f53b6f9061a2b2ca30f6f8cecb5c4ad706a755d2da995d05a58d1d881925e10d4d6a5fdc99592c8f8661ac4e915b95026a2483505e5eb47e68cbd6ea3b4eb12
                                          SSDEEP:1536:87vbq1lGAXSEYQjbChaAU2yU23M51DjZgSQAvcYkFtZTjzl:8D+CAXFYQChaAUk5ljnQssl
                                          TLSH:FF6312E027B6178C1276E8393ADE306F8124222B379A29245DD751CEF85B7039573DBD
                                          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
                                          LOAD0x00x100000x100000x137e90x137e97.99730x5R E0x10000
                                          LOAD0x6fc0x506fc0x506fc0x00x00.00000x6RW 0x10000

                                          Download Network PCAP: filteredfull

                                          • Total Packets: 7
                                          • 443 (HTTPS)
                                          • 80 (HTTP)
                                          TimestampSource PortDest PortSource IPDest IP
                                          Mar 24, 2025 16:23:28.162631989 CET43928443192.168.2.2391.189.91.42
                                          Mar 24, 2025 16:23:33.026130915 CET4251680192.168.2.23109.202.202.202
                                          Mar 24, 2025 16:23:33.538074970 CET42836443192.168.2.2391.189.91.43
                                          Mar 24, 2025 16:23:48.639878988 CET43928443192.168.2.2391.189.91.42
                                          Mar 24, 2025 16:24:00.926249027 CET42836443192.168.2.2391.189.91.43
                                          Mar 24, 2025 16:24:02.973855972 CET4251680192.168.2.23109.202.202.202
                                          Mar 24, 2025 16:24:29.594315052 CET43928443192.168.2.2391.189.91.42

                                          System Behavior

                                          Start time (UTC):15:23:26
                                          Start date (UTC):24/03/2025
                                          Path:/tmp/.i.elf
                                          Arguments:/tmp/.i.elf
                                          File size:4956856 bytes
                                          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1