Linux Analysis Report
na.elf

Overview

General Information

Sample name: na.elf
Analysis ID: 1533409
MD5: 942a4c72715f07a61b8b964496eceed0
SHA1: a854637de45fc554fb4a6a91041f22d21f7da229
SHA256: 0312908f4074edd1b4078635da54c9a730f213c25b3b079d140f7a48e5c3448a
Tags: elfuser-abuse_ch
Infos:

Detection

Score: 52
Range: 0 - 100
Whitelisted: false

Signatures

Multi AV Scanner detection for submitted file
Sample is packed with UPX
ELF contains segments with high entropy indicating compressed/encrypted content
Executes the "rm" command used to delete files or directories
Sample contains only a LOAD segment without any section mappings
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

AV Detection
barindex
Multi AV Scanner detection for submitted file
Source: na.elf ReversingLabs: Detection: 75%
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com
Source: na.elf String found in binary or memory: http://upx.sf.net
Sample contains only a LOAD segment without any section mappings
Source: LOAD without section mappings Program segment: 0x8000
Source: classification engine Classification label: mal52.evad.linELF@0/0@2/0

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 3.95 Copyright (C) 1996-2018 the UPX Team. All Rights Reserved. $
Executes the "rm" command used to delete files or directories
Source: /usr/bin/dash (PID: 5413) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.wLvzvVYRft /tmp/tmp.vP5TwQfjr0 /tmp/tmp.yrXQFuHbHk Jump to behavior
Source: /usr/bin/dash (PID: 5422) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.wLvzvVYRft /tmp/tmp.vP5TwQfjr0 /tmp/tmp.yrXQFuHbHk Jump to behavior
ELF contains segments with high entropy indicating compressed/encrypted content
Source: na.elf Submission file: segment LOAD with 7.9739 entropy (max. 8.0)
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/na.elf (PID: 5437) Queries kernel information via 'uname': Jump to behavior
Source: na.elf, 5437.1.00007ffe9f8f2000.00007ffe9f913000.rw-.sdmp Binary or memory string: 8qx86_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, 5437.1.0000560faa7d2000.0000560faa900000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: na.elf, 5437.1.0000560faa7d2000.0000560faa900000.rw-.sdmp Binary or memory string: V!/etc/qemu-binfmt/arm
Source: na.elf, 5437.1.00007ffe9f8f2000.00007ffe9f913000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: na.elf, 5437.1.00007ffe9f8f2000.00007ffe9f913000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

No Screenshots

⊘No contacted IP infos

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.24 true