Linux Analysis Report
zmap.sh4.elf

Overview

General Information

Sample name:	zmap.sh4.elf
Analysis ID:	1546742
MD5:	ecc739c8c89f908e6265e3fafe726f9a
SHA1:	40d488c8da7d8e33df240e1074c446692f1bb57c
SHA256:	f9057b0cae91b1661f034c8ab604519cbed370328c268fc8be3c5fd59d0b4076
Tags:	elfuser-abuse_ch
Infos:

Detection

Mirai, Okiru

Score:	84
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

Yara detected Mirai

Yara detected Okiru

Sample deletes itself

Detected TCP or UDP traffic on non-standard ports

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)

Yara signature match

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: zmap.sh4.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: zmap.sh4.elf

ReversingLabs: Detection: 57%

Detected TCP or UDP traffic on non-standard ports

Source: global traffic

TCP traffic: 192.168.2.23:35764 -> 154.216.16.38:59962

Sample listens on a socket

Source: /tmp/zmap.sh4.elf (PID: 6240)

Socket: 127.0.0.1:39148

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	TCP traffic detected without corresponding DNS query: 91.189.91.43

Source: global traffic

DNS traffic detected: DNS query: server.dico-inside.com

Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

System Summary

Malicious sample detected (through community Yara rule)

Source: zmap.sh4.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6245.1.00007f1b2c400000.00007f1b2c410000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6240.1.00007f1b2c400000.00007f1b2c410000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: zmap.sh4.elf PID: 6240, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: zmap.sh4.elf PID: 6245, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown

Sample has stripped symbol table

Source: ELF static info symbol of initial sample

.symtab present: no

Yara signature match

Source: zmap.sh4.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: 6245.1.00007f1b2c400000.00007f1b2c410000.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: 6240.1.00007f1b2c400000.00007f1b2c410000.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: Process Memory Space: zmap.sh4.elf PID: 6240, 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: zmap.sh4.elf PID: 6245, 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: mal84.troj.evad.linELF@0/0@1/0

Hooking and other Techniques for Hiding and Protection

Sample deletes itself

Source: /tmp/zmap.sh4.elf (PID: 6240)

File: /tmp/zmap.sh4.elf

Jump to behavior

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

Source: /tmp/zmap.sh4.elf (PID: 6240)

Queries kernel information via 'uname':

Jump to behavior

Source: zmap.sh4.elf, 6240.1.00007ffdea121000.00007ffdea142000.rw-.sdmp, zmap.sh4.elf, 6245.1.00007ffdea121000.00007ffdea142000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-sh4/tmp/zmap.sh4.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/zmap.sh4.elf
Source: zmap.sh4.elf, 6240.1.00007ffdea121000.00007ffdea142000.rw-.sdmp, zmap.sh4.elf, 6245.1.00007ffdea121000.00007ffdea142000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-sh4
Source: zmap.sh4.elf, 6240.1.0000556d4974b000.0000556d497ae000.rw-.sdmp, zmap.sh4.elf, 6245.1.0000556d4974b000.0000556d497ae000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/sh4
Source: zmap.sh4.elf, 6240.1.0000556d4974b000.0000556d497ae000.rw-.sdmp, zmap.sh4.elf, 6245.1.0000556d4974b000.0000556d497ae000.rw-.sdmp	Binary or memory string: tImU5!/etc/qemu-binfmt/sh4

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: zmap.sh4.elf, type: SAMPLE
Source: Yara match	File source: 6245.1.00007f1b2c400000.00007f1b2c410000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6240.1.00007f1b2c400000.00007f1b2c410000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: zmap.sh4.elf PID: 6240, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: zmap.sh4.elf PID: 6245, type: MEMORYSTR

Yara detected Okiru

Source: Yara match	File source: zmap.sh4.elf, type: SAMPLE
Source: Yara match	File source: 6245.1.00007f1b2c400000.00007f1b2c410000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6240.1.00007f1b2c400000.00007f1b2c410000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: zmap.sh4.elf PID: 6240, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: zmap.sh4.elf PID: 6245, type: MEMORYSTR

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: zmap.sh4.elf, type: SAMPLE
Source: Yara match	File source: 6245.1.00007f1b2c400000.00007f1b2c410000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6240.1.00007f1b2c400000.00007f1b2c410000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: zmap.sh4.elf PID: 6240, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: zmap.sh4.elf PID: 6245, type: MEMORYSTR

Yara detected Okiru

Source: Yara match	File source: zmap.sh4.elf, type: SAMPLE
Source: Yara match	File source: 6245.1.00007f1b2c400000.00007f1b2c410000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6240.1.00007f1b2c400000.00007f1b2c410000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: zmap.sh4.elf PID: 6240, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: zmap.sh4.elf PID: 6245, 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
109.202.202.202	unknown	Switzerland	13030	INIT7CH	false
154.216.16.38	server.dico-inside.com	Seychelles	135357	SKHT-ASShenzhenKatherineHengTechnologyInformationCo	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
server.dico-inside.com	154.216.16.38	true

ID:	1546742
Product:	CloudBasic
Start time:	15:14:08
Start date:	01.11.2024
Sample:	zmap.sh4.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:	ecc739c8c89f908e6265e3fafe726f9a
SHA1:	40d488c8da7d8e33df240e1074c446692f1bb57c
SHA256:	f9057b0cae91b1661f034c8ab604519cbed370328c268fc8be3c5fd59d0b4076
Filetype:	ELF Executable and Linkable format (generic) (4004/1) 100.00%

Linux Analysis Report
zmap.sh4.elf

Overview

General Information

Detection

Signatures

Classification

Malware Threat Intel
Provided by

Signatures

AV Detection

Networking

System Summary

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

Screenshots

Network Map

Contacted Public IPs

Contacted Domains

Linux Analysis Report zmap.sh4.elf

Overview

General Information

Detection

Signatures

Classification

Malware Threat Intel Provided by

Signatures

AV Detection

Networking

System Summary

Hooking and other Techniques for Hiding and Protection

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

Screenshots

Network Map

Contacted Public IPs

Contacted Domains

Linux Analysis Report
zmap.sh4.elf

Malware Threat Intel
Provided by