Linux Analysis Report
na.elf

Overview

General Information

Sample name: na.elf
Analysis ID: 1530534
MD5: a721d26b612fb64d46236ef9816b2d2d
SHA1: 7ab8451e192272617c570147428bb086c9f3a503
SHA256: 18f3f77e7c8bad69ed4c2bde4bbd0dd16b54804088cb608a3f3ca68661662b57
Tags: elfuser-abuse_ch
Infos:

Detection

Mirai
Score: 76
Range: 0 - 100
Whitelisted: false

Signatures

Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Mirai
Sample is packed with UPX
ELF contains segments with high entropy indicating compressed/encrypted content
Sample contains only a LOAD segment without any section mappings
Uses the "uname" system call to query kernel version information (possible evasion)
Yara signature match

Classification

AV Detection
barindex
Multi AV Scanner detection for submitted file
Source: na.elf Virustotal: Detection: 47% Perma Link
Source: na.elf ReversingLabs: Detection: 60%
Source: na.elf String found in binary or memory: http://upx.sf.net

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: 5436.1.00007f65fc017000.00007f65fc026000.r-x.sdmp, type: MEMORY Matched rule: Detects ELF malware Mirai related Author: Florian Roth
Sample contains only a LOAD segment without any section mappings
Source: LOAD without section mappings Program segment: 0x8000
Yara signature match
Source: 5436.1.00007f65fc017000.00007f65fc026000.r-x.sdmp, type: MEMORY Matched rule: MAL_ELF_LNX_Mirai_Oct10_2 date = 2018-10-27, hash1 = fa0018e75f503f9748a5de0d14d4358db234f65e28c31c8d5878cc58807081c9, author = Florian Roth, description = Detects ELF malware Mirai related, reference = Internal Research
Source: classification engine Classification label: mal76.troj.evad.linELF@0/0@0/0

Data Obfuscation
barindex
Sample is packed with UPX
Source: initial sample String containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sample String containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sample String containing UPX found: $Id: UPX 3.94 Copyright (C) 1996-2017 the UPX Team. All Rights Reserved. $
ELF contains segments with high entropy indicating compressed/encrypted content
Source: na.elf Submission file: segment LOAD with 7.9312 entropy (max. 8.0)
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/na.elf (PID: 5436) Queries kernel information via 'uname': Jump to behavior
Source: na.elf, 5436.1.00007ffc5f719000.00007ffc5f73a000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/na.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/na.elf
Source: na.elf, 5436.1.00005587b69d4000.00005587b6c02000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: na.elf, 5436.1.00005587b69d4000.00005587b6c02000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: na.elf, 5436.1.00007ffc5f719000.00007ffc5f73a000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: 5436.1.00007f65fc017000.00007f65fc026000.r-x.sdmp, type: MEMORY

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: 5436.1.00007f65fc017000.00007f65fc026000.r-x.sdmp, type: MEMORY

No Screenshots

⊘No contacted IP infos