Linux Analysis Report
sshd.elf

Overview

General Information

Sample name: sshd.elf
Analysis ID: 1540257
MD5: b0b3697792ceb1a5203142196e8cec35
SHA1: 377a38442149d43be754dae292c17e4e1ffb3225
SHA256: c27bc30b52a29be24d73ec77c418031b3301f8ecdd3b233ccf19d81fe5e9cec2
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: 21%
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Source: global traffic TCP traffic: 192.168.2.13:48202 -> 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: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com
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 48202 -> 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@2/0
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: 5428) Queries kernel information via 'uname': Jump to behavior
Source: sshd.elf, 5428.1.00007ffe997a2000.00007ffe997c3000.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, 5428.1.000056425c382000.000056425c4b0000.rw-.sdmp Binary or memory string: 9\BV!/etc/qemu-binfmt/arm
Source: sshd.elf, 5428.1.000056425c382000.000056425c4b0000.rw-.sdmp Binary or memory string: 8\BVrg.qemu.gdb.arm.sys.regs">
Source: sshd.elf, 5428.1.00007ffe997a2000.00007ffe997c3000.rw-.sdmp Binary or memory string: qemu: %s: %s
Source: sshd.elf, 5428.1.00007ffe997a2000.00007ffe997c3000.rw-.sdmp Binary or memory string: leqemu: %s: %s
Source: sshd.elf, 5428.1.000056425c382000.000056425c4b0000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: sshd.elf, 5428.1.00007ffe997a2000.00007ffe997c3000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: sshd.elf, 5428.1.000056425c382000.000056425c4b0000.rw-.sdmp Binary or memory string: rg.qemu.gdb.arm.sys.regs">

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 162.213.35.24 true