Linux Analysis Report
B7cl2k3l7y.elf

Overview

General Information

Sample name: B7cl2k3l7y.elf
renamed because original name is a hash value
Original sample name: 5983859e0217f7efb38dd215bf326be2.elf
Analysis ID: 1426694
MD5: 5983859e0217f7efb38dd215bf326be2
SHA1: 2a9d56694c1ba4964f1c09045cd477386047845c
SHA256: 5e92122c2de27eadf25c4d6e53ed203eed6846099db1cd46b5aaa141cd6af498
Tags: 32armelfmirai
Infos:

Detection

Score: 60
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
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
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

AV Detection
barindex
Antivirus / Scanner detection for submitted sample
Source: B7cl2k3l7y.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: B7cl2k3l7y.elf ReversingLabs: Detection: 57%
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Source: global traffic TCP traffic: 192.168.2.14:46540 -> 185.125.190.26:443
Source: unknown TCP traffic detected without corresponding DNS query: 185.125.190.26
Source: unknown TCP traffic detected without corresponding DNS query: 185.125.190.26
Source: unknown DNS traffic detected: queries for: daisy.ubuntu.com
Source: B7cl2k3l7y.elf String found in binary or memory: http://upx.sf.net
Source: unknown Network traffic detected: HTTP traffic on port 46540 -> 443
Sample contains only a LOAD segment without any section mappings
Source: LOAD without section mappings Program segment: 0x8000
Source: classification engine Classification label: mal60.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: 5472) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.CCZ0GZYFXn /tmp/tmp.uAOKcDQXwM /tmp/tmp.ZsJD7a92tz Jump to behavior
Source: /usr/bin/dash (PID: 5481) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.CCZ0GZYFXn /tmp/tmp.uAOKcDQXwM /tmp/tmp.ZsJD7a92tz Jump to behavior
ELF contains segments with high entropy indicating compressed/encrypted content
Source: B7cl2k3l7y.elf Submission file: segment LOAD with 7.9351 entropy (max. 8.0)
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/B7cl2k3l7y.elf (PID: 5509) Queries kernel information via 'uname': Jump to behavior
Source: B7cl2k3l7y.elf, 5509.1.000055a256a64000.000055a256b92000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: B7cl2k3l7y.elf, 5509.1.00007ffca7b35000.00007ffca7b56000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/B7cl2k3l7y.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/B7cl2k3l7y.elf
Source: B7cl2k3l7y.elf, 5509.1.000055a256a64000.000055a256b92000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: B7cl2k3l7y.elf, 5509.1.00007ffca7b35000.00007ffca7b56000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: B7cl2k3l7y.elf, 5509.1.00007ffca7b35000.00007ffca7b56000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

No Screenshots

  • 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
185.125.190.26
 unknown United Kingdom
41231 CANONICAL-ASGB false

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.25 true