Linux Analysis Report
LJ6BZHggzR.elf

Overview

General Information

Sample name: LJ6BZHggzR.elf
renamed because original name is a hash value
Original sample name: 71c346f8c321eb54177ff8aee2a8aa4d.elf
Analysis ID: 1447005
MD5: 71c346f8c321eb54177ff8aee2a8aa4d
SHA1: 02dcb96adead0941524bb5a9ae7d94d4da91f923
SHA256: 9e3deee12bb39cee6e69f8af4e57dd88a44dec6c180eed4c87994bb149badb67
Tags: 32elfgafgytintel
Infos:

Detection

Gafgyt, Mirai
Score: 100
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Yara detected Gafgyt
Yara detected Mirai
Contains symbols with names commonly found in malware
Machine Learning detection for sample
Opens /proc/net/* files useful for finding connected devices and routers
Detected TCP or UDP traffic on non-standard ports
Sample contains strings that are user agent strings indicative of HTTP manipulation
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Yara signature match

Classification

Name Description Attribution Blogpost URLs Link
Bashlite, Gafgyt Bashlite is a malware family which infects Linux systems in order to launch distributed denial-of-service attacks (DDoS). Originally it was also known under the name Bashdoor, but this term now refers to the exploit method used by the malware. It has been used to launch attacks of up to 400 Gbps. No Attribution https://malpedia.caad.fkie.fraunhofer.de/details/elf.bashlite
Name Description Attribution Blogpost URLs Link
Mirai Mirai is one of the first significant botnets targeting exposed networking devices running Linux. Found in August 2016 by MalwareMustDie, its name means "future" in Japanese. Nowadays it targets a wide range of networked embedded devices such as IP cameras, home routers (many vendors involved), and other IoT devices. Since the source code was published on "Hack Forums" many variants of the Mirai family appeared, infecting mostly home networks all around the world. No Attribution https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai

AV Detection
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Antivirus / Scanner detection for submitted sample
Source: LJ6BZHggzR.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: LJ6BZHggzR.elf ReversingLabs: Detection: 71%
Source: LJ6BZHggzR.elf Virustotal: Detection: 66% Perma Link
Machine Learning detection for sample
Source: LJ6BZHggzR.elf Joe Sandbox ML: detected

Spreading
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Opens /proc/net/* files useful for finding connected devices and routers
Source: /tmp/LJ6BZHggzR.elf (PID: 6222) Opens: /proc/net/route Jump to behavior

Networking
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Snort IDS alert for network traffic
Source: Traffic Snort IDS: 2839491 ETPRO TROJAN ELF/BASHLITE Variant CnC Checkin M2 192.168.2.23:47256 -> 64.23.184.217:666
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.23:47256 -> 64.23.184.217:666
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: 64.23.184.217
Source: unknown TCP traffic detected without corresponding DNS query: 64.23.184.217
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown TCP traffic detected without corresponding DNS query: 64.23.184.217
Source: unknown TCP traffic detected without corresponding DNS query: 64.23.184.217
Source: unknown TCP traffic detected without corresponding DNS query: 64.23.184.217
Source: unknown TCP traffic detected without corresponding DNS query: 64.23.184.217
Source: unknown TCP traffic detected without corresponding DNS query: 64.23.184.217
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: 64.23.184.217
Source: unknown TCP traffic detected without corresponding DNS query: 64.23.184.217
Source: unknown TCP traffic detected without corresponding DNS query: 64.23.184.217
Source: unknown TCP traffic detected without corresponding DNS query: 64.23.184.217
Source: unknown TCP traffic detected without corresponding DNS query: 64.23.184.217
Source: unknown TCP traffic detected without corresponding DNS query: 64.23.184.217
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443

System Summary
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Malicious sample detected (through community Yara rule)
Source: LJ6BZHggzR.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: LJ6BZHggzR.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_862c4e0e Author: unknown
Source: 6222.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6222.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_862c4e0e Author: unknown
Source: 6224.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6224.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_862c4e0e Author: unknown
Source: 6223.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6223.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_862c4e0e Author: unknown
Source: Process Memory Space: LJ6BZHggzR.elf PID: 6222, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: LJ6BZHggzR.elf PID: 6223, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: LJ6BZHggzR.elf PID: 6224, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Contains symbols with names commonly found in malware
Source: ELF static info symbol of initial sample Name: vseattack
Yara signature match
Source: LJ6BZHggzR.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: LJ6BZHggzR.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_862c4e0e reference_sample = 9526277255a8d632355bfe54d53154c9c54a4ab75e3ba24333c73ad0ed7cadb1, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 2a6b4f8d8fb4703ed26bdcfbbb5c539dc451c8b90649bee80015c164eae4c281, id = 862c4e0e-83a4-458b-8c00-f2f3cf0bf9db, last_modified = 2021-09-16
Source: 6222.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: 6222.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_862c4e0e reference_sample = 9526277255a8d632355bfe54d53154c9c54a4ab75e3ba24333c73ad0ed7cadb1, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 2a6b4f8d8fb4703ed26bdcfbbb5c539dc451c8b90649bee80015c164eae4c281, id = 862c4e0e-83a4-458b-8c00-f2f3cf0bf9db, last_modified = 2021-09-16
Source: 6224.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: 6224.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_862c4e0e reference_sample = 9526277255a8d632355bfe54d53154c9c54a4ab75e3ba24333c73ad0ed7cadb1, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 2a6b4f8d8fb4703ed26bdcfbbb5c539dc451c8b90649bee80015c164eae4c281, id = 862c4e0e-83a4-458b-8c00-f2f3cf0bf9db, last_modified = 2021-09-16
Source: 6223.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: 6223.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_862c4e0e reference_sample = 9526277255a8d632355bfe54d53154c9c54a4ab75e3ba24333c73ad0ed7cadb1, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 2a6b4f8d8fb4703ed26bdcfbbb5c539dc451c8b90649bee80015c164eae4c281, id = 862c4e0e-83a4-458b-8c00-f2f3cf0bf9db, last_modified = 2021-09-16
Source: Process Memory Space: LJ6BZHggzR.elf PID: 6222, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: Process Memory Space: LJ6BZHggzR.elf PID: 6223, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: Process Memory Space: LJ6BZHggzR.elf PID: 6224, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: classification engine Classification label: mal100.spre.troj.linELF@0/0@0/0

Stealing of Sensitive Information
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Yara detected Gafgyt
Source: Yara match File source: LJ6BZHggzR.elf, type: SAMPLE
Yara detected Mirai
Source: Yara match File source: LJ6BZHggzR.elf, type: SAMPLE
Source: Yara match File source: 6222.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6224.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6223.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: LJ6BZHggzR.elf PID: 6222, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: LJ6BZHggzR.elf PID: 6223, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: LJ6BZHggzR.elf PID: 6224, type: MEMORYSTR
Sample contains strings that are user agent strings indicative of HTTP manipulation
Source: Initial sample User agent string found: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; pl) Opera 11.00
Source: Initial sample User agent string found: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; en) Opera 11.00
Source: Initial sample User agent string found: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; ja) Opera 11.00
Source: Initial sample User agent string found: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; de) Opera 11.01
Source: Initial sample User agent string found: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; fr) Opera 11.00
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.79 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0
Source: Initial sample User agent string found: Mozilla/5.0 (iPhone; CPU iPhone OS 8_4 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Version/8.0 Mobile/12H143 Safari/600.1.4
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11) AppleWebKit/601.1.56 (KHTML, like Gecko) Version/9.0 Safari/601.1.56
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_1) AppleWebKit/601.2.7 (KHTML, like Gecko) Version/9.0.1 Safari/601.2.7
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko
Source: Initial sample User agent string found: Opera/9.80 (Windows NT 5.2; U; ru) Presto/2.5.22 Version/10.51
Source: Initial sample User agent string found: Opera/9.80 (X11; Linux i686; Ubuntu/14.10) Presto/2.12.388 Version/12.16
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.75.14 (KHTML, like Gecko) Version/7.0.3 Safari/7046A194A
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.94 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Linux; Android 4.4.3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.89 Mobile Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Linux; Android 4.4.3; HTC_0PCV2 Build/KTU84L) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Mobile Safari/537.36
Source: Initial sample User agent string found: Mozilla/4.0 (compatible; MSIE 8.0; X11; Linux x86_64; pl) Opera 11.00
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:25.0) Gecko/20100101 Firefox/25.0
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:21.0) Gecko/20100101 Firefox/21.0
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Firefox/24.0
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10; rv:33.0) Gecko/20100101 Firefox/33.0

Remote Access Functionality
barindex
Yara detected Gafgyt
Source: Yara match File source: LJ6BZHggzR.elf, type: SAMPLE
Yara detected Mirai
Source: Yara match File source: LJ6BZHggzR.elf, type: SAMPLE
Source: Yara match File source: 6222.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6224.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6223.1.0000000008048000.000000000805c000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: LJ6BZHggzR.elf PID: 6222, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: LJ6BZHggzR.elf PID: 6223, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: LJ6BZHggzR.elf PID: 6224, type: MEMORYSTR

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
109.202.202.202
 unknown Switzerland
13030 INIT7CH false
64.23.184.217
 unknown United States
3064 AFFINITY-FTLUS true
91.189.91.43
 unknown United Kingdom
41231 CANONICAL-ASGB false
91.189.91.42
 unknown United Kingdom
41231 CANONICAL-ASGB false