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Linux Analysis Report
tftp.elf

Overview

General Information

Sample name:tftp.elf
Analysis ID:1543501
MD5:a7a64459fc777199626a0112311ece64
SHA1:398b1868db068d9fd968d4b17942852964339e14
SHA256:d8332267b97104558310187113772b222046507d27bfba9f6148157698127f39
Tags:elfuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100
Whitelisted:false

Signatures

Multi AV Scanner detection for submitted file
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

Joe Sandbox version:41.0.0 Charoite
Analysis ID:1543501
Start date and time:2024-10-28 02:13:07 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 34s
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:tftp.elf
Detection:MAL
Classification:mal48.linELF@0/0@0/0
Command:/tmp/tftp.elf
PID:6256
Exit Code:135
Exit Code Info:
Killed:False
Standard Output:

Standard Error:
  • system is lnxubuntu20
  • tftp.elf (PID: 6256, Parent: 6181, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/tftp.elf
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: tftp.elfReversingLabs: Detection: 15%
Source: global trafficTCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
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: 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: 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: classification engineClassification label: mal48.linELF@0/0@0/0
Source: /tmp/tftp.elf (PID: 6256)Queries kernel information via 'uname': Jump to behavior
Source: tftp.elf, 6256.1.000055f72ef1b000.000055f72f027000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: tftp.elf, 6256.1.00007fffdf581000.00007fffdf5a2000.rw-.sdmpBinary or memory string: sx86_64/usr/bin/qemu-arm/tmp/tftp.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/tftp.elf
Source: tftp.elf, 6256.1.000055f72ef1b000.000055f72f027000.rw-.sdmpBinary or memory string: Urg.qemu.gdb.arm.sys.regs">
Source: tftp.elf, 6256.1.000055f72ef1b000.000055f72f027000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: tftp.elf, 6256.1.00007fffdf581000.00007fffdf5a2000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: tftp.elf, 6256.1.000055f72ef1b000.000055f72f027000.rw-.sdmpBinary or memory string: rg.qemu.gdb.arm.sys.regs">
ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath InterceptionDirect Volume AccessOS 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
SourceDetectionScannerLabelLink
tftp.elf16%ReversingLabsLinux.Trojan.Generic
No Antivirus matches
No Antivirus matches
No Antivirus matches
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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                                          • 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
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                                          • 109.202.202.202
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                                          • 109.202.202.202
                                          linux_mipsel_softfloat.elfGet hashmaliciousChaosBrowse
                                          • 109.202.202.202
                                          linux_arm7.elfGet hashmaliciousChaosBrowse
                                          • 109.202.202.202
                                          No context
                                          No context
                                          No created / dropped files found
                                          File type:ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux.so.3, missing section headers at 381572
                                          Entropy (8bit):6.009633001196439
                                          TrID:
                                          • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                          File name:tftp.elf
                                          File size:102'400 bytes
                                          MD5:a7a64459fc777199626a0112311ece64
                                          SHA1:398b1868db068d9fd968d4b17942852964339e14
                                          SHA256:d8332267b97104558310187113772b222046507d27bfba9f6148157698127f39
                                          SHA512:878bb9058b73efe843411103ee5be61cd8ae9e52fe2d63fc42594f4b841b0bbc2d610f2381a71228074e8d7258c613a59f3cd3d2528ac929942481e7b0f358b6
                                          SSDEEP:3072:9LOuh02xHCKQnqZ9YfMXKgyLlBZSyPjYhC:FOuhPHCKsqZ9YfM6g23ZJbYhC
                                          TLSH:B8A30A96F8A28B56C4C55777FB4FC75637231795E3DF36038A184E34278B50A8E3AA01
                                          File Content Preview:.ELF..............(.........4...........4. ...(........p.....+...+......................4...4...4...@...@...............t...t...t..............................................................................................................................
                                          TimestampSource PortDest PortSource IPDest IP
                                          Oct 28, 2024 02:13:55.645729065 CET43928443192.168.2.2391.189.91.42
                                          Oct 28, 2024 02:14:01.273145914 CET42836443192.168.2.2391.189.91.43
                                          Oct 28, 2024 02:14:02.040927887 CET4251680192.168.2.23109.202.202.202
                                          Oct 28, 2024 02:14:17.142927885 CET43928443192.168.2.2391.189.91.42
                                          Oct 28, 2024 02:14:27.381465912 CET42836443192.168.2.2391.189.91.43
                                          Oct 28, 2024 02:14:31.476892948 CET4251680192.168.2.23109.202.202.202
                                          Oct 28, 2024 02:14:58.097177029 CET43928443192.168.2.2391.189.91.42

                                          System Behavior

                                          Start time (UTC):01:13:54
                                          Start date (UTC):28/10/2024
                                          Path:/tmp/tftp.elf
                                          Arguments:/tmp/tftp.elf
                                          File size:4956856 bytes
                                          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1