Linux Analysis Report
novo.arm6.elf

Overview

General Information

Sample name: novo.arm6.elf
Analysis ID: 1524309
MD5: ac284815030511fca84071f480a8fd41
SHA1: 0ba776c883e25ebb0aca925757b3748ac2bf61ad
SHA256: c84d14404a9211b91d52e44b4865407f0efc6da61bbe5dc1718f33f8230e6510
Tags: elfMirainovouser-NDA0E
Infos:

Detection

Mirai, Moobot
Score: 80
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 Moobot
Executes the "rm" command used to delete files or directories
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample has stripped symbol table
Uses the "uname" system call to query kernel version information (possible evasion)
Yara signature match

Classification

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
Name Description Attribution Blogpost URLs Link
MooBot No Attribution https://malpedia.caad.fkie.fraunhofer.de/details/elf.moobot

AV Detection
barindex
Antivirus / Scanner detection for submitted sample
Source: novo.arm6.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: novo.arm6.elf ReversingLabs: Detection: 68%
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: novo.arm6.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: novo.arm6.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_0bce98a2 Author: unknown
Source: novo.arm6.elf, type: SAMPLE Matched rule: Detects Mirai Botnet Malware Author: Florian Roth
Source: 5523.1.00007f309c017000.00007f309c02b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5523.1.00007f309c017000.00007f309c02b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_0bce98a2 Author: unknown
Source: 5523.1.00007f309c017000.00007f309c02b000.r-x.sdmp, type: MEMORY Matched rule: Detects Mirai Botnet Malware Author: Florian Roth
Source: Process Memory Space: novo.arm6.elf PID: 5523, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
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: f%s:%dwebserv/bin/busybox/bin/watchdog/bin/systemd
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Yara signature match
Source: novo.arm6.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: novo.arm6.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_0bce98a2 reference_sample = 1b20df8df7f84ad29d81ccbe276f49a6488c2214077b13da858656c027531c80, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 993d0d2e24152d0fb72cc5d5add395bed26671c3935f73386341398b91cb0e6e, id = 0bce98a2-113e-41e1-95c9-9e1852b26142, last_modified = 2021-09-16
Source: novo.arm6.elf, type: SAMPLE Matched rule: Mirai_Botnet_Malware date = 2016-10-04, hash5 = 420bf9215dfb04e5008c5e522eee9946599e2b323b17f17919cd802ebb012175, hash4 = 2efa09c124f277be2199bee58f49fc0ce6c64c0bef30079dfb3d94a6de492a69, hash3 = 20683ff7a5fec1237fc09224af40be029b9548c62c693844624089af568c89d4, hash2 = 05c78c3052b390435e53a87e3d31e9fb17f7c76bb4df2814313bca24735ce81c, hash1 = 05c78c3052b390435e53a87e3d31e9fb17f7c76bb4df2814313bca24735ce81c, author = Florian Roth, description = Detects Mirai Botnet Malware, hash10 = c61bf95146c68bfbbe01d7695337ed0e93ea759f59f651799f07eecdb339f83f, hash11 = d9573c3850e2ae35f371dff977fc3e5282a5e67db8e3274fd7818e8273fd5c89, hash12 = f1100c84abff05e0501e77781160d9815628e7fd2de9e53f5454dbcac7c84ca5, hash9 = bf0471b37dba7939524a30d7d5afc8fcfb8d4a7c9954343196737e72ea4e2dc4, hash8 = 89570ae59462e6472b6769545a999bde8457e47ae0d385caaa3499ab735b8147, hash7 = 70bb0ec35dd9afcfd52ec4e1d920e7045dc51dca0573cd4c753987c9d79405c0, hash6 = 62cdc8b7fffbaf5683a466f6503c03e68a15413a90f6afd5a13ba027631460c6, reference = Internal Research, license = https://creativecommons.org/licenses/by-nc/4.0/, hash13 = fb713ccf839362bf0fbe01aedd6796f4d74521b133011b408e42c1fd9ab8246b
Source: 5523.1.00007f309c017000.00007f309c02b000.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: 5523.1.00007f309c017000.00007f309c02b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_0bce98a2 reference_sample = 1b20df8df7f84ad29d81ccbe276f49a6488c2214077b13da858656c027531c80, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 993d0d2e24152d0fb72cc5d5add395bed26671c3935f73386341398b91cb0e6e, id = 0bce98a2-113e-41e1-95c9-9e1852b26142, last_modified = 2021-09-16
Source: 5523.1.00007f309c017000.00007f309c02b000.r-x.sdmp, type: MEMORY Matched rule: Mirai_Botnet_Malware date = 2016-10-04, hash5 = 420bf9215dfb04e5008c5e522eee9946599e2b323b17f17919cd802ebb012175, hash4 = 2efa09c124f277be2199bee58f49fc0ce6c64c0bef30079dfb3d94a6de492a69, hash3 = 20683ff7a5fec1237fc09224af40be029b9548c62c693844624089af568c89d4, hash2 = 05c78c3052b390435e53a87e3d31e9fb17f7c76bb4df2814313bca24735ce81c, hash1 = 05c78c3052b390435e53a87e3d31e9fb17f7c76bb4df2814313bca24735ce81c, author = Florian Roth, description = Detects Mirai Botnet Malware, hash10 = c61bf95146c68bfbbe01d7695337ed0e93ea759f59f651799f07eecdb339f83f, hash11 = d9573c3850e2ae35f371dff977fc3e5282a5e67db8e3274fd7818e8273fd5c89, hash12 = f1100c84abff05e0501e77781160d9815628e7fd2de9e53f5454dbcac7c84ca5, hash9 = bf0471b37dba7939524a30d7d5afc8fcfb8d4a7c9954343196737e72ea4e2dc4, hash8 = 89570ae59462e6472b6769545a999bde8457e47ae0d385caaa3499ab735b8147, hash7 = 70bb0ec35dd9afcfd52ec4e1d920e7045dc51dca0573cd4c753987c9d79405c0, hash6 = 62cdc8b7fffbaf5683a466f6503c03e68a15413a90f6afd5a13ba027631460c6, reference = Internal Research, license = https://creativecommons.org/licenses/by-nc/4.0/, hash13 = fb713ccf839362bf0fbe01aedd6796f4d74521b133011b408e42c1fd9ab8246b
Source: Process Memory Space: novo.arm6.elf PID: 5523, 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: mal80.troj.linELF@0/0@2/0
Executes the "rm" command used to delete files or directories
Source: /usr/bin/dash (PID: 5504) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.ersC5aHsqi /tmp/tmp.hxinM5ILw1 /tmp/tmp.EuAVhYDTix Jump to behavior
Source: /usr/bin/dash (PID: 5505) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.ersC5aHsqi /tmp/tmp.hxinM5ILw1 /tmp/tmp.EuAVhYDTix Jump to behavior
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/novo.arm6.elf (PID: 5523) Queries kernel information via 'uname': Jump to behavior
Source: novo.arm6.elf, 5523.1.00007ffd28790000.00007ffd287b1000.rw-.sdmp Binary or memory string: lx86_64/usr/bin/qemu-arm/tmp/novo.arm6.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/novo.arm6.elf
Source: novo.arm6.elf, 5523.1.00005622fb312000.00005622fb440000.rw-.sdmp Binary or memory string: "V!/etc/qemu-binfmt/arm
Source: novo.arm6.elf, 5523.1.00005622fb312000.00005622fb440000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: novo.arm6.elf, 5523.1.00007ffd28790000.00007ffd287b1000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: novo.arm6.elf, 5523.1.00007ffd28790000.00007ffd287b1000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: novo.arm6.elf, type: SAMPLE
Source: Yara match File source: 5523.1.00007f309c017000.00007f309c02b000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: novo.arm6.elf PID: 5523, type: MEMORYSTR
Yara detected Moobot
Source: Yara match File source: novo.arm6.elf, type: SAMPLE
Source: Yara match File source: 5523.1.00007f309c017000.00007f309c02b000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: novo.arm6.elf PID: 5523, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: novo.arm6.elf, type: SAMPLE
Source: Yara match File source: 5523.1.00007f309c017000.00007f309c02b000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: novo.arm6.elf PID: 5523, type: MEMORYSTR
Yara detected Moobot
Source: Yara match File source: novo.arm6.elf, type: SAMPLE
Source: Yara match File source: 5523.1.00007f309c017000.00007f309c02b000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: novo.arm6.elf PID: 5523, type: MEMORYSTR
windows-stand
⊘No contacted IP infos

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.25 true