Linux Analysis Report
na.elf

Overview

General Information

Sample name: na.elf
Analysis ID: 1528130
MD5: 2217b66d1ed526cf0b984e3ae4f1e5c8
SHA1: 51bab3447e824ce8f9fbf63068f304c1fafd1d7c
SHA256: 85348bc5ce9966d796e27a99e06318acae6714992b368b96211b6d6cefc78eb9
Tags: elfuser-abuse_ch
Infos:

Detection

Score: 2
Range: 0 - 100
Whitelisted: false

Signatures

Contains symbols related to standard C library sleeps (sometimes used to evade sandboxing)
Sample and/or dropped files contains symbols with suspicious names
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

Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Source: global traffic TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
Source: global traffic TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: na.elf ELF static info symbol of initial sample: freeaddrinfo
Source: na.elf ELF static info symbol of initial sample: gai_strerror
Source: na.elf ELF static info symbol of initial sample: getaddrinfo
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443
Sample and/or dropped files contains symbols with suspicious names
Source: na.elf ELF static info symbol of initial sample: bufio.(*Scanner).Scan
Source: na.elf ELF static info symbol of initial sample: crypto/rand.(*hideAgainReader).Read
Source: na.elf ELF static info symbol of initial sample: crypto/rand.hideAgainReader.Read
Source: classification engine Classification label: clean2.linELF@0/0@0/0
Source: ELF file section Submission: na.elf
Contains symbols related to standard C library sleeps (sometimes used to evade sandboxing)
Source: ELF symbol in initial sample Symbol name: nanosleep
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/na.elf (PID: 6211) Queries kernel information via 'uname': Jump to behavior
Source: na.elf, 6211.1.0000561911226000.00005619112ca000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/aarch64
Source: na.elf, 6211.1.0000561911226000.00005619112ca000.rw-.sdmp Binary or memory string: Vrg.qemu.gdb.arm.sys.regs">
Source: na.elf, 6211.1.00007ffca4393000.00007ffca43b4000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-aarch64/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, 6211.1.0000561911226000.00005619112ca000.rw-.sdmp Binary or memory string: rg.qemu.gdb.arm.sys.regs">
Source: na.elf, 6211.1.0000561911226000.00005619112ca000.rw-.sdmp Binary or memory string: V1/etc/qemu-binfmt/aarch64O
Source: na.elf, 6211.1.00007ffca4393000.00007ffca43b4000.rw-.sdmp Binary or memory string: /usr/bin/qemu-aarch64
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
109.202.202.202
 unknown Switzerland
13030 INIT7CH false
91.189.91.43
 unknown United Kingdom
41231 CANONICAL-ASGB false
91.189.91.42
 unknown United Kingdom
41231 CANONICAL-ASGB false