Linux Analysis Report
novo.arm5.elf

Overview

General Information

Sample name: novo.arm5.elf
Analysis ID: 1524310
MD5: 9e93eb22a63a25785e3432e8b200213a
SHA1: a2a8317c73c39d6021a59ab1ec76d03965211189
SHA256: 5f8de650a2f1ff4b0578a194fbe4daf4be6075919e7ef718fa030f67e54528c4
Tags: elfnovouser-NDA0E
Infos:

Detection

Moobot
Score: 72
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 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

AV Detection
barindex
Antivirus / Scanner detection for submitted sample
Source: novo.arm5.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: novo.arm5.elf ReversingLabs: Detection: 63%
Source: unknown HTTPS traffic detected: 54.171.230.55:443 -> 192.168.2.23:33606 version: TLS 1.2
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: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
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 Network traffic detected: HTTP traffic on port 443 -> 33606
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 33606 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443
Source: unknown HTTPS traffic detected: 54.171.230.55:443 -> 192.168.2.23:33606 version: TLS 1.2

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: novo.arm5.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: novo.arm5.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_0bce98a2 Author: unknown
Source: novo.arm5.elf, type: SAMPLE Matched rule: Detects Mirai Botnet Malware Author: Florian Roth
Source: 6230.1.00007fe930017000.00007fe930022000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6230.1.00007fe930017000.00007fe930022000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_0bce98a2 Author: unknown
Source: 6230.1.00007fe930017000.00007fe930022000.r-x.sdmp, type: MEMORY Matched rule: Detects Mirai Botnet Malware Author: Florian Roth
Source: Process Memory Space: novo.arm5.elf PID: 6230, 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.arm5.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.arm5.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.arm5.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: 6230.1.00007fe930017000.00007fe930022000.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: 6230.1.00007fe930017000.00007fe930022000.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: 6230.1.00007fe930017000.00007fe930022000.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.arm5.elf PID: 6230, 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: mal72.troj.linELF@0/0@0/0
Executes the "rm" command used to delete files or directories
Source: /usr/bin/dash (PID: 6265) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.ehPCx1PIQ4 /tmp/tmp.kkX1ttuhY1 /tmp/tmp.TOmqiaShkB Jump to behavior
Source: /usr/bin/dash (PID: 6276) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.ehPCx1PIQ4 /tmp/tmp.kkX1ttuhY1 /tmp/tmp.TOmqiaShkB Jump to behavior
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/novo.arm5.elf (PID: 6230) Queries kernel information via 'uname': Jump to behavior
Source: novo.arm5.elf, 6230.1.000055b830e31000.000055b830f5f000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: novo.arm5.elf, 6230.1.00007ffef149d000.00007ffef14be000.rw-.sdmp Binary or memory string: qemu: %s: %s
Source: novo.arm5.elf, 6230.1.00007ffef149d000.00007ffef14be000.rw-.sdmp Binary or memory string: leqemu: %s: %s
Source: novo.arm5.elf, 6230.1.00007ffef149d000.00007ffef14be000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/novo.arm5.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.arm5.elf
Source: novo.arm5.elf, 6230.1.000055b830e31000.000055b830f5f000.rw-.sdmp Binary or memory string: Urg.qemu.gdb.arm.sys.regs">
Source: novo.arm5.elf, 6230.1.000055b830e31000.000055b830f5f000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: novo.arm5.elf, 6230.1.00007ffef149d000.00007ffef14be000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: novo.arm5.elf, 6230.1.000055b830e31000.000055b830f5f000.rw-.sdmp Binary or memory string: rg.qemu.gdb.arm.sys.regs">

Stealing of Sensitive Information
barindex
Yara detected Moobot
Source: Yara match File source: novo.arm5.elf, type: SAMPLE
Source: Yara match File source: 6230.1.00007fe930017000.00007fe930022000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: novo.arm5.elf PID: 6230, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Moobot
Source: Yara match File source: novo.arm5.elf, type: SAMPLE
Source: Yara match File source: 6230.1.00007fe930017000.00007fe930022000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: novo.arm5.elf PID: 6230, 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
54.171.230.55
 unknown United States
16509 AMAZON-02US false
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