Linux Analysis Report
n7Nzys6TF5.elf

Overview

General Information

Sample name: n7Nzys6TF5.elf
renamed because original name is a hash value
Original sample name: 10b93cb7ab56c399b8359cd8e71dfb90.elf
Analysis ID: 1531065
MD5: 10b93cb7ab56c399b8359cd8e71dfb90
SHA1: a210b19749d938d7876acb945375e7992077ddea
SHA256: 8cf158f86dc0dbd183f6e380ca2ac18117e20f5bdaa683edcb5f5d3bed3a7241
Tags: 32elfmirairenesas
Infos:

Detection

Mirai
Score: 72
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Mirai
Executes the "rm" command used to delete files or directories
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample has stripped symbol table
Uses the "uname" system call to query kernel version information (possible evasion)
Yara signature match

Classification

AV Detection
barindex
Antivirus / Scanner detection for submitted sample
Source: n7Nzys6TF5.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: n7Nzys6TF5.elf ReversingLabs: Detection: 63%
Source: unknown HTTPS traffic detected: 54.171.230.55:443 -> 192.168.2.15:60058 version: TLS 1.2
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown Network traffic detected: HTTP traffic on port 60058 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 443 -> 60058
Source: unknown HTTPS traffic detected: 54.171.230.55:443 -> 192.168.2.15:60058 version: TLS 1.2

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: n7Nzys6TF5.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: n7Nzys6TF5.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: 5515.1.00007fb4c0400000.00007fb4c0418000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5515.1.00007fb4c0400000.00007fb4c0418000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: Process Memory Space: n7Nzys6TF5.elf PID: 5515, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: n7Nzys6TF5.elf PID: 5515, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Source: Initial sample String containing 'busybox' found: /bin/busybox
Source: Initial sample String containing 'busybox' found: /bin/busybox/usr/lib/systemd/systemd/usr/libexec/openssh/sftp-serverusr/shellmnt/sys/bin/boot/media/srv/var/run/sbin/lib/etc/dev/telnetsshwatchdogsshd/usr/compress/bin//compress/bin/compress/usr/bashmain_x86main_x86_64main_mipsmain_mipselmain_armmain_arm5main_arm6main_arm7main_ppcmain_m68kmain_sh4main_spchttpdtelnetddropbearropbearencodersystem/root/dvr_gui//root/dvr_app//anko-app//opt//tmp/var/mnt/boot/home/dev/..//root(deleted)/proc/self/exe
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Yara signature match
Source: n7Nzys6TF5.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: n7Nzys6TF5.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16
Source: 5515.1.00007fb4c0400000.00007fb4c0418000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: 5515.1.00007fb4c0400000.00007fb4c0418000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16
Source: Process Memory Space: n7Nzys6TF5.elf PID: 5515, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: Process Memory Space: n7Nzys6TF5.elf PID: 5515, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16
Source: classification engine Classification label: mal72.troj.linELF@0/0@0/0
Executes the "rm" command used to delete files or directories
Source: /usr/bin/dash (PID: 5555) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.wzb3ueiOr7 /tmp/tmp.uaEUOMbJbC /tmp/tmp.T3QHwrztAq Jump to behavior
Source: /usr/bin/dash (PID: 5564) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.wzb3ueiOr7 /tmp/tmp.uaEUOMbJbC /tmp/tmp.T3QHwrztAq Jump to behavior
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/n7Nzys6TF5.elf (PID: 5515) Queries kernel information via 'uname': Jump to behavior
Source: n7Nzys6TF5.elf, 5515.1.00007fff4b579000.00007fff4b59a000.rw-.sdmp Binary or memory string: /usr/bin/qemu-sh4
Source: n7Nzys6TF5.elf, 5515.1.00007fff4b579000.00007fff4b59a000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-sh4/tmp/n7Nzys6TF5.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/n7Nzys6TF5.elf
Source: n7Nzys6TF5.elf, 5515.1.0000560897b8d000.0000560897bf0000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/sh4
Source: n7Nzys6TF5.elf, 5515.1.0000560897b8d000.0000560897bf0000.rw-.sdmp Binary or memory string: V5!/etc/qemu-binfmt/sh4

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: n7Nzys6TF5.elf, type: SAMPLE
Source: Yara match File source: 5515.1.00007fb4c0400000.00007fb4c0418000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: n7Nzys6TF5.elf PID: 5515, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: n7Nzys6TF5.elf, type: SAMPLE
Source: Yara match File source: 5515.1.00007fb4c0400000.00007fb4c0418000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: n7Nzys6TF5.elf PID: 5515, type: MEMORYSTR
windows-stand
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
54.171.230.55
 unknown United States
16509 AMAZON-02US false