Linux Analysis Report
zmap.arm.elf

Overview

General Information

Sample name:	zmap.arm.elf
Analysis ID:	1546748
MD5:	cdc46d2754ffaf581f0e011c4960332d
SHA1:	53657bd523faeea5d768a830412113fb46c39321
SHA256:	9f29e193d60134d76b92f383016a64f7eae0e500e561b203529564104b3fd101
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.arm.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: zmap.arm.elf

ReversingLabs: Detection: 63%

Detected TCP or UDP traffic on non-standard ports

Source: global traffic

TCP traffic: 192.168.2.23:35784 -> 154.216.16.38:59962

Sample listens on a socket

Source: /tmp/zmap.arm.elf (PID: 6264)

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: 192.168.2.23:42516 -> 109.202.202.202:80
Source: global traffic	TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443

Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
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: 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.arm.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6268.1.00007ff4fc017000.00007ff4fc02a000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6264.1.00007ff4fc017000.00007ff4fc02a000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: zmap.arm.elf PID: 6264, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: zmap.arm.elf PID: 6268, 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.arm.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: 6268.1.00007ff4fc017000.00007ff4fc02a000.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: 6264.1.00007ff4fc017000.00007ff4fc02a000.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.arm.elf PID: 6264, 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.arm.elf PID: 6268, 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@13/0

Hooking and other Techniques for Hiding and Protection

Sample deletes itself

Source: /tmp/zmap.arm.elf (PID: 6264)

File: /tmp/zmap.arm.elf

Jump to behavior

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

Source: /tmp/zmap.arm.elf (PID: 6264)

Queries kernel information via 'uname':

Jump to behavior

Source: zmap.arm.elf, 6264.1.00007fff6b845000.00007fff6b866000.rw-.sdmp, zmap.arm.elf, 6268.1.00007fff6b845000.00007fff6b866000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/zmap.arm.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.arm.elf
Source: zmap.arm.elf, 6264.1.000055ce039c4000.000055ce03af2000.rw-.sdmp, zmap.arm.elf, 6268.1.000055ce039c4000.000055ce03af2000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: zmap.arm.elf, 6264.1.000055ce039c4000.000055ce03af2000.rw-.sdmp, zmap.arm.elf, 6268.1.000055ce039c4000.000055ce03af2000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: zmap.arm.elf, 6264.1.00007fff6b845000.00007fff6b866000.rw-.sdmp, zmap.arm.elf, 6268.1.00007fff6b845000.00007fff6b866000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: zmap.arm.elf, type: SAMPLE
Source: Yara match	File source: 6268.1.00007ff4fc017000.00007ff4fc02a000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6264.1.00007ff4fc017000.00007ff4fc02a000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: zmap.arm.elf PID: 6264, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: zmap.arm.elf PID: 6268, type: MEMORYSTR

Yara detected Okiru

Source: Yara match	File source: zmap.arm.elf, type: SAMPLE
Source: Yara match	File source: 6268.1.00007ff4fc017000.00007ff4fc02a000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6264.1.00007ff4fc017000.00007ff4fc02a000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: zmap.arm.elf PID: 6264, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: zmap.arm.elf PID: 6268, type: MEMORYSTR

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: zmap.arm.elf, type: SAMPLE
Source: Yara match	File source: 6268.1.00007ff4fc017000.00007ff4fc02a000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6264.1.00007ff4fc017000.00007ff4fc02a000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: zmap.arm.elf PID: 6264, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: zmap.arm.elf PID: 6268, type: MEMORYSTR

Yara detected Okiru

Source: Yara match	File source: zmap.arm.elf, type: SAMPLE
Source: Yara match	File source: 6268.1.00007ff4fc017000.00007ff4fc02a000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 6264.1.00007ff4fc017000.00007ff4fc02a000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: zmap.arm.elf PID: 6264, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: zmap.arm.elf PID: 6268, 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:	1546748
Product:	CloudBasic
Start time:	15:18:09
Start date:	01.11.2024
Sample:	zmap.arm.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:	cdc46d2754ffaf581f0e011c4960332d
SHA1:	53657bd523faeea5d768a830412113fb46c39321
SHA256:	9f29e193d60134d76b92f383016a64f7eae0e500e561b203529564104b3fd101
Filetype:	ELF Executable and Linkable format (generic) (4004/1) 100.00%

Linux Analysis Report
zmap.arm.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.arm.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.arm.elf

Malware Threat Intel
Provided by