Linux Analysis Report
sshd.elf

Overview

General Information

Sample name: sshd.elf
Analysis ID: 1565524
MD5: b485b17e86ac65004dad2eea947c43a7
SHA1: 5f5a65f7916c8610b6a0e087babeb093a0a21c01
SHA256: 25276149acd4378f9a2214f43a2075b1dd3ecd6904894097c03f7a80cfb1acae
Tags: elfuser-abuse_ch
Infos:

Detection

Score: 48
Range: 0 - 100
Whitelisted: false

Signatures

Multi AV Scanner detection for submitted file
Contains symbols related to standard C library sleeps (sometimes used to evade sandboxing)
Sample contains strings that are potentially command strings
Sample has stripped symbol table
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
Multi AV Scanner detection for submitted file
Source: sshd.elf ReversingLabs: Detection: 26%
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Source: global traffic TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
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: 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: 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: sshd.elf ELF static info symbol of initial sample: freeaddrinfo
Source: sshd.elf ELF static info symbol of initial sample: gai_strerror
Source: sshd.elf ELF static info symbol of initial sample: getaddrinfo
Source: sshd.elf ELF static info symbol of initial sample: getnameinfo
Source: sshd.elf String found in binary or memory: http://www.openssl.org/support/faq.html
Source: sshd.elf String found in binary or memory: http://www.openssl.org/support/faq.htmlmd_rand.c
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443
Sample contains strings that are potentially command strings
Source: Initial sample Potential command found: ssh server is locked, please try again %dmin after !!!
Source: Initial sample Potential command found: X11 forwarding
Source: Initial sample Potential command found: X11 forwarding disabled in user configuration file.
Source: Initial sample Potential command found: X11 forwarding disabled in server configuration file.
Source: Initial sample Potential command found: X11 display already set.
Source: Initial sample Potential command found: X11 connection requested.
Source: Initial sample Potential command found: X11 connection from %.200s port %d
Source: Initial sample Potential command found: X11 connection rejected because of wrong authentication.
Source: Initial sample Potential command found: X11 rejected %d i%d/o%d
Source: Initial sample Potential command found: X11 closed %d i%d/o%d
Source: Initial sample Potential command found: X11 inet listener
Source: Initial sample Potential command found: X11 connection uses different authentication protocol.
Source: Initial sample Potential command found: X11 auth data does not match fake data.
Source: Initial sample Potential command found: X11 fake_data_len %d != saved_data_len %d
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: mal48.linELF@0/0@0/0
Contains symbols related to standard C library sleeps (sometimes used to evade sandboxing)
Source: ELF symbol in initial sample Symbol name: usleep
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/sshd.elf (PID: 6236) Queries kernel information via 'uname': Jump to behavior
Source: sshd.elf, 6236.1.0000555ce4ed8000.0000555ce5006000.rw-.sdmp Binary or memory string: \U!/etc/qemu-binfmt/arm
Source: sshd.elf, 6236.1.00007ffec2ecf000.00007ffec2ef0000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/sshd.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/sshd.elf
Source: sshd.elf, 6236.1.00007ffec2ecf000.00007ffec2ef0000.rw-.sdmp Binary or memory string: qemu: %s: %s
Source: sshd.elf, 6236.1.00007ffec2ecf000.00007ffec2ef0000.rw-.sdmp Binary or memory string: leqemu: %s: %s
Source: sshd.elf, 6236.1.0000555ce4ed8000.0000555ce5006000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: sshd.elf, 6236.1.00007ffec2ecf000.00007ffec2ef0000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: sshd.elf, 6236.1.0000555ce4ed8000.0000555ce5006000.rw-.sdmp Binary or memory string: rg.qemu.gdb.arm.sys.regs">
Source: sshd.elf, 6236.1.0000555ce4ed8000.0000555ce5006000.rw-.sdmp Binary or memory string: \Urg.qemu.gdb.arm.sys.regs">
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