Linux Analysis Report
HB2h7DKsXn.elf

Overview

General Information

Sample name: HB2h7DKsXn.elf
renamed because original name is a hash value
Original sample name: 8e85cb6f2215999dc6823ea3982ff4376c2cbea53286e95ed00250a4a2fe4729.elf
Analysis ID: 1501617
MD5: e527b3f10217c1d663e567e041947033
SHA1: 168d8c11681ac4f59f335688b21ef7ffb83bc84d
SHA256: 8e85cb6f2215999dc6823ea3982ff4376c2cbea53286e95ed00250a4a2fe4729
Tags: 45-91-82-127Bifrostelf
Infos:

Detection

Score: 56
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Executes the "rm" command used to delete files or directories
Sample has stripped symbol table
Sleeps for long times indicative of sandbox evasion
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Tries to resolve domain names, but no domain seems valid (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: HB2h7DKsXn.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: HB2h7DKsXn.elf Virustotal: Detection: 61% Perma Link
Source: HB2h7DKsXn.elf ReversingLabs: Detection: 73%
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
Tries to resolve domain names, but no domain seems valid (expired dropper behavior)
Source: unknown DNS traffic detected: query: download.vmfare.com replaycode: Name error (3)
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: unknown TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown UDP traffic detected without corresponding DNS query: 168.95.1.1
Source: global traffic DNS traffic detected: DNS query: download.vmfare.com
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: mal56.linELF@0/0@2/0
Executes the "rm" command used to delete files or directories
Source: /usr/bin/dash (PID: 6196) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.kez7MmyFty /tmp/tmp.9HED5QhUTD /tmp/tmp.RYTmACJWEm Jump to behavior
Source: /usr/bin/dash (PID: 6197) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.kez7MmyFty /tmp/tmp.9HED5QhUTD /tmp/tmp.RYTmACJWEm Jump to behavior
Sleeps for long times indicative of sandbox evasion
Source: /tmp/HB2h7DKsXn.elf (PID: 6235) Sleeps longer then 60s: 300.0s Jump to behavior
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/HB2h7DKsXn.elf (PID: 6233) Queries kernel information via 'uname': Jump to behavior
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

Contacted Domains

Name IP Active
download.vmfare.com unknown unknown