Linux Analysis Report
D2sLkFb0Il.elf

Overview

General Information

Sample name: D2sLkFb0Il.elf
renamed because original name is a hash value
Original sample name: d578fbefb02164f9d58690a223423917.elf
Analysis ID: 1417436
MD5: d578fbefb02164f9d58690a223423917
SHA1: dc59a411105419c42162f815e3e2ad3cf056a40e
SHA256: f38f46f448b43194170326bfbcc21ea13ec468a09c078c03e82a584143b0092a
Tags: 32elfgafgytintel
Infos:

Detection

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

Signatures

Antivirus / Scanner detection for submitted sample
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Gafgyt
Yara detected Mirai
Connects to many ports of the same IP (likely port scanning)
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 indicative of BusyBox which embeds multiple Unix commands in a single executable
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
barindex
Antivirus / Scanner detection for submitted sample
Source: D2sLkFb0Il.elf Avira: detected
Found malware configuration
Source: D2sLkFb0Il.elf Malware Configuration Extractor: Gafgyt {"C2 url": "193.35.18.56:65490"}
Multi AV Scanner detection for submitted file
Source: D2sLkFb0Il.elf Virustotal: Detection: 54% Perma Link
Source: D2sLkFb0Il.elf ReversingLabs: Detection: 52%
Machine Learning detection for sample
Source: D2sLkFb0Il.elf Joe Sandbox ML: detected

Spreading
barindex
Opens /proc/net/* files useful for finding connected devices and routers
Source: /tmp/D2sLkFb0Il.elf (PID: 6217) Opens: /proc/net/route Jump to behavior

Networking
barindex
Connects to many ports of the same IP (likely port scanning)
Source: global traffic TCP traffic: 193.35.18.56 ports 0,4,5,6,9,65490
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.23:32894 -> 193.35.18.56:65490
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: 193.35.18.56
Source: unknown TCP traffic detected without corresponding DNS query: 193.35.18.56
Source: unknown TCP traffic detected without corresponding DNS query: 193.35.18.56
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: 193.35.18.56
Source: unknown TCP traffic detected without corresponding DNS query: 193.35.18.56
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown TCP traffic detected without corresponding DNS query: 193.35.18.56
Source: unknown TCP traffic detected without corresponding DNS query: 193.35.18.56
Source: unknown TCP traffic detected without corresponding DNS query: 193.35.18.56
Source: unknown TCP traffic detected without corresponding DNS query: 193.35.18.56
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: D2sLkFb0Il.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: D2sLkFb0Il.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_e6d75e6f Author: unknown
Source: 6218.1.0000000008048000.000000000805a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6218.1.0000000008048000.000000000805a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_e6d75e6f Author: unknown
Source: 6217.1.0000000008048000.000000000805a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6217.1.0000000008048000.000000000805a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_e6d75e6f Author: unknown
Source: Process Memory Space: D2sLkFb0Il.elf PID: 6217, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: D2sLkFb0Il.elf PID: 6218, 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
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Source: Initial sample String containing 'busybox' found: /bin/busybox
Source: Initial sample String containing 'busybox' found: LZRDskidx86?-_-=1IObeENwjmipsvlxx.arm6vlxx.armvlxx.x86_64vlxx.mipsvlxx.arm7vlxx.m68kvlxx.mpslvlxx.ppcvlxx.sh4vlxx.x86vlxx.arm5sys64.m68ksys64.x86sys64.x86_64sys64.arm6sys64.mpslsys64.spcsys64.ar64besys64.sh4sys64.aarch64sys64.i686sys64.arm7sys64.armsys64.mipssys64.arm5IObeENwjmpslIObeENwjarmIObeENwjarm4IObeENwjarm5IObeENwjarm6IObeENwjarm7.x86.x86_64.arm.arm5.arm6.arm7.mips.mipsel.sh4.ppcdvrhelperhuhudvrsupportmiraiArceusla.bot.0xc2sfuckjewishpeople.mipsfuckjewishpeoplessh.mipsHadesboatnetloligangSakuraDemonbladedemonhohohakaisoramessiahmipsmipselsh4superhx86armv7armv6i686campnig.x86nigpercx86dosbotBOTDOS@DOSBOTDOSBOTperci5perci6percmipspercmpslpercsparkpercm68kpercppcpercsh4percshpercoarmperceightysixpercmips&lperc.shCronx86anacronCronarmCronmipsCronmpslCronspcCronm68kCronppcCronsh4Cronshcnrpox(deleted)killpstreekillallbgpmaplsofarmUser-Agent:/dev/nullSTD/etc/rc.conf/proc/net/tcp/proc/self/exeUPX!/proc/net/route/etc/rc.d/rc.local/bin/shtophtopgrepbashcatnanopssshtelnetdpcbashdvarsshdcurltftpdtelnetvar/Challen
Yara signature match
Source: D2sLkFb0Il.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: D2sLkFb0Il.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_e6d75e6f reference_sample = 48b15093f33c18778724c48c34199a420be4beb0d794e36034097806e1521eb8, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = e99805e8917d6526031270b6da5c2f3cc1c8235fed1d47134835a107d0df497c, id = e6d75e6f-aa04-4767-8730-6909958044a7, last_modified = 2021-09-16
Source: 6218.1.0000000008048000.000000000805a000.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: 6218.1.0000000008048000.000000000805a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_e6d75e6f reference_sample = 48b15093f33c18778724c48c34199a420be4beb0d794e36034097806e1521eb8, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = e99805e8917d6526031270b6da5c2f3cc1c8235fed1d47134835a107d0df497c, id = e6d75e6f-aa04-4767-8730-6909958044a7, last_modified = 2021-09-16
Source: 6217.1.0000000008048000.000000000805a000.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: 6217.1.0000000008048000.000000000805a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_e6d75e6f reference_sample = 48b15093f33c18778724c48c34199a420be4beb0d794e36034097806e1521eb8, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = e99805e8917d6526031270b6da5c2f3cc1c8235fed1d47134835a107d0df497c, id = e6d75e6f-aa04-4767-8730-6909958044a7, last_modified = 2021-09-16
Source: Process Memory Space: D2sLkFb0Il.elf PID: 6217, 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: D2sLkFb0Il.elf PID: 6218, 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
barindex
Yara detected Gafgyt
Source: Yara match File source: D2sLkFb0Il.elf, type: SAMPLE
Yara detected Mirai
Source: Yara match File source: D2sLkFb0Il.elf, type: SAMPLE
Source: Yara match File source: 6218.1.0000000008048000.000000000805a000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6217.1.0000000008048000.000000000805a000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: D2sLkFb0Il.elf PID: 6217, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: D2sLkFb0Il.elf PID: 6218, type: MEMORYSTR
Sample contains strings that are user agent strings indicative of HTTP manipulation
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1.2 Safari/605.1.1 31.5
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.3 17.34
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.2 Safari/605.1.1 11.27
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6 Safari/605.1.1 9.83
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.3 9.25
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:120.0) Gecko/20100101 Firefox/120. 6.94
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/117. 2.31
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36 Edg/119.0.0. 2.31
Source: Initial sample User agent string found: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.3 1.16
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115. 1.16
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.3 1.16
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Herring/90.1.9310.1 1.16
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36 OPR/105.0.0. 1.16
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36 Edg/117.0.2045.4 1.16
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.3 1.16
Source: Initial sample User agent string found: Mozilla/5.0 (iPhone; CPU iPhone OS 17_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/119.0.6045.169 Mobile/15E148 Safari/604.
Source: Initial sample User agent string found: Mozilla/5.0 (iPhone; CPU iPhone OS 17_1_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1.2 Mobile/15E148 Safari/604.

Remote Access Functionality
barindex
Yara detected Gafgyt
Source: Yara match File source: D2sLkFb0Il.elf, type: SAMPLE
Yara detected Mirai
Source: Yara match File source: D2sLkFb0Il.elf, type: SAMPLE
Source: Yara match File source: 6218.1.0000000008048000.000000000805a000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6217.1.0000000008048000.000000000805a000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: D2sLkFb0Il.elf PID: 6217, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: D2sLkFb0Il.elf PID: 6218, type: MEMORYSTR
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
193.35.18.56
 unknown Germany
41865 BIALLNET-ASPL true
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 URLs

Name Malicious Antivirus Detection Reputation
193.35.18.56:65490 true
    		unknown