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Linux Analysis Report
oTkRt5RqnR.elf

Overview

General Information

Sample name:	oTkRt5RqnR.elf renamed because original name is a hash value
Original sample name:	500c6f75dfbaadbedcc4d17795af7a28.elf
Analysis ID:	1447343
MD5:	500c6f75dfbaadbedcc4d17795af7a28
SHA1:	6c9abd19e88ce4537fc834491defe28bc8105e4b
SHA256:	0ded79594ce6d79bcf1b7e5a16e329e0d00f4e00999a156cdcadf180a66673d5
Tags:	32elfmipsmirai
Infos:

Detection

Mirai, Okiru

Score:	88
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

Executes the "rm" command used to delete files or directories

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

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

Yara signature match

Classification

General Information

Joe Sandbox version:	40.0.0 Tourmaline
Analysis ID:	1447343
Start date and time:	2024-05-24 20:48:13 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 42s
Hypervisor based Inspection enabled:	false
Report type:	full
Cookbook file name:	defaultlinuxfilecookbook.jbs
Analysis 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)
Analysis Mode:	default
Sample name:	oTkRt5RqnR.elf renamed because original name is a hash value
Original Sample Name:	500c6f75dfbaadbedcc4d17795af7a28.elf
Detection:	MAL
Classification:	mal88.troj.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/oTkRt5RqnR.elf
PID:	5519
Exit Code:	139
Exit Code Info:	SIGSEGV (11) Segmentation fault invalid memory reference
Killed:	False
Standard Output:
Standard Error:	qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Process Tree

system is lnxubuntu20

dash New Fork (PID: 5505, Parent: 3671)

rm (PID: 5505, Parent: 3671, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.uxGVCf1ieD /tmp/tmp.BcFYK5GTyY /tmp/tmp.r6SilTGQD0

dash New Fork (PID: 5506, Parent: 3671)

rm (PID: 5506, Parent: 3671, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.uxGVCf1ieD /tmp/tmp.BcFYK5GTyY /tmp/tmp.r6SilTGQD0

oTkRt5RqnR.elf (PID: 5519, Parent: 5442, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/oTkRt5RqnR.elf

cleanup

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

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
oTkRt5RqnR.elf	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
oTkRt5RqnR.elf	JoeSecurity_Mirai_3	Yara detected Mirai	Joe Security
oTkRt5RqnR.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
oTkRt5RqnR.elf	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x26f78:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x26f8c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x26fa0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x26fb4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x26fc8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x26fdc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x26ff0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27004:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27018:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x2702c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27040:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27054:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27068:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x2707c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27090:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x270a4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x270b8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x270cc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x270e0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x270f4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27108:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
oTkRt5RqnR.elf	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x26e38:$a: 53 65 6C 66 20 52 65 70 20 46 75 63 6B 69 6E 67 20 4E 65 54 69 53 20 61 6E 64

Memory Dumps

Source	Rule	Description	Author	Strings
5519.1.00007faae0400000.00007faae042a000.r-x.sdmp	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
5519.1.00007faae0400000.00007faae042a000.r-x.sdmp	JoeSecurity_Mirai_3	Yara detected Mirai	Joe Security
5519.1.00007faae0400000.00007faae042a000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
5519.1.00007faae0400000.00007faae042a000.r-x.sdmp	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x26f78:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x26f8c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x26fa0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x26fb4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x26fc8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x26fdc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x26ff0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27004:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27018:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x2702c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27040:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27054:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27068:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x2707c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27090:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x270a4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x270b8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x270cc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x270e0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x270f4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x27108:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
5519.1.00007faae0400000.00007faae042a000.r-x.sdmp	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x26e38:$a: 53 65 6C 66 20 52 65 70 20 46 75 63 6B 69 6E 67 20 4E 65 54 69 53 20 61 6E 64
Process Memory Space: oTkRt5RqnR.elf PID: 5519	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
Process Memory Space: oTkRt5RqnR.elf PID: 5519	JoeSecurity_Mirai_3	Yara detected Mirai	Joe Security
Process Memory Space: oTkRt5RqnR.elf PID: 5519	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
Process Memory Space: oTkRt5RqnR.elf PID: 5519	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x961:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x975:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x989:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x99d:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x9b1:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x9c5:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x9d9:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x9ed:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xa01:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xa15:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xa29:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xa3d:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xa51:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xa65:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xa79:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xa8d:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xaa1:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xab5:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xac9:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xadd:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xaf1:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
Process Memory Space: oTkRt5RqnR.elf PID: 5519	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x847:$a: 53 65 6C 66 20 52 65 70 20 46 75 63 6B 69 6E 67 20 4E 65 54 69 53 20 61 6E 64
Click to see the 5 entries

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus / Scanner detection for submitted sample

Source: oTkRt5RqnR.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: oTkRt5RqnR.elf

ReversingLabs: Detection: 36%

Source: oTkRt5RqnR.elf

String: HTTP/1.1 200 OKtop1hbt.armtop1hbt.arm5top1hbt.arm6top1hbt.arm7top1hbt.mipstop1hbt.mpsltop1hbt.x86_64top1hbt.sh4/proc/proc/%d/cmdlinenetstatwgetcurlbusybox/bin/busybox/proc//proc/%s/exe/proc/self/exevar/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdanko-app/ankosample _8182T_1104var/tmp/soniahicorestm_hi3511_dvr/usr/lib/systemd/systemd/usr/libexec/openssh/sftp-serverusr/shellmnt/sys/bin/boot/media/srv/var/run/sbin/lib/etc/dev/home/Davincitelnetsshwatchdog/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr/bashhttpdtelnetddropbearropbearencodersystem/root/dvr_gui//root/dvr_app//anko-app//opt/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ3f

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

System Summary

Malicious sample detected (through community Yara rule)

Source: oTkRt5RqnR.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: oTkRt5RqnR.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: 5519.1.00007faae0400000.00007faae042a000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5519.1.00007faae0400000.00007faae042a000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: Process Memory Space: oTkRt5RqnR.elf PID: 5519, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: oTkRt5RqnR.elf PID: 5519, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown

Source: Initial sample	String containing 'busybox' found: busybox
Source: Initial sample	String containing 'busybox' found: /bin/busybox
Source: Initial sample	String containing 'busybox' found: HTTP/1.1 200 OKtop1hbt.armtop1hbt.arm5top1hbt.arm6top1hbt.arm7top1hbt.mipstop1hbt.mpsltop1hbt.x86_64top1hbt.sh4/proc/proc/%d/cmdlinenetstatwgetcurlbusybox/bin/busybox/proc//proc/%s/exe/proc/self/exevar/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdanko-app/ankosample _8182T_1104var/tmp/soniahicorestm_hi3511_dvr/usr/lib/systemd/systemd/usr/libexec/openssh/sftp-serverusr/shellmnt/sys/bin/boot/media/srv/var/run/sbin/lib/etc/dev/home/Davincitelnetsshwatchdog/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr/bashhttpdtelnetddropbearropbearencodersystem/root/dvr_gui//root/dvr_app//anko-app//opt/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ3f

Source: ELF static info symbol of initial sample

.symtab present: no

Source: oTkRt5RqnR.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: oTkRt5RqnR.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16
Source: 5519.1.00007faae0400000.00007faae042a000.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: 5519.1.00007faae0400000.00007faae042a000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16
Source: Process Memory Space: oTkRt5RqnR.elf PID: 5519, 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: oTkRt5RqnR.elf PID: 5519, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16

Source: classification engine

Classification label: mal88.troj.linELF@0/0@2/0

Source: /usr/bin/dash (PID: 5505)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.uxGVCf1ieD /tmp/tmp.BcFYK5GTyY /tmp/tmp.r6SilTGQD0			Jump to behavior
Source: /usr/bin/dash (PID: 5506)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.uxGVCf1ieD /tmp/tmp.BcFYK5GTyY /tmp/tmp.r6SilTGQD0			Jump to behavior

Source: /tmp/oTkRt5RqnR.elf (PID: 5519)

Queries kernel information via 'uname':

Jump to behavior

Source: oTkRt5RqnR.elf, 5519.1.00007fff92b55000.00007fff92b76000.rw-.sdmp	Binary or memory string: Yx86_64/usr/bin/qemu-mips/tmp/oTkRt5RqnR.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/oTkRt5RqnR.elf
Source: oTkRt5RqnR.elf, 5519.1.0000564b9a100000.0000564b9a187000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mips
Source: oTkRt5RqnR.elf, 5519.1.0000564b9a100000.0000564b9a187000.rw-.sdmp	Binary or memory string: KV!/etc/qemu-binfmt/mips
Source: oTkRt5RqnR.elf, 5519.1.00007fff92b55000.00007fff92b76000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mips
Source: oTkRt5RqnR.elf, 5519.1.00007fff92b55000.00007fff92b76000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: oTkRt5RqnR.elf, type: SAMPLE
Source: Yara match	File source: 5519.1.00007faae0400000.00007faae042a000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: oTkRt5RqnR.elf PID: 5519, type: MEMORYSTR

Yara detected Okiru

Source: Yara match	File source: oTkRt5RqnR.elf, type: SAMPLE
Source: Yara match	File source: 5519.1.00007faae0400000.00007faae042a000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: oTkRt5RqnR.elf PID: 5519, type: MEMORYSTR

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: oTkRt5RqnR.elf, type: SAMPLE
Source: Yara match	File source: 5519.1.00007faae0400000.00007faae042a000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: oTkRt5RqnR.elf PID: 5519, type: MEMORYSTR

Yara detected Okiru

Source: Yara match	File source: oTkRt5RqnR.elf, type: SAMPLE
Source: Yara match	File source: 5519.1.00007faae0400000.00007faae042a000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: oTkRt5RqnR.elf PID: 5519, type: MEMORYSTR

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	1 Scripting	Valid Accounts	Windows Management Instrumentation	1 Scripting	Path Interception	1 File Deletion	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Non-Application Layer Protocol	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Rootkit	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	1 Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service

Malware Configuration

⊘No configs have been found

Behavior Graph

Hide Legend

Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Number of created Files
Is malicious
Internet

Source	Detection	Scanner	Label	Link
oTkRt5RqnR.elf	37%	ReversingLabs	Linux.Trojan.Mirai
oTkRt5RqnR.elf	100%	Avira	EXP/ELF.Mirai.Z.A

Name	IP	Active	Malicious	Antivirus Detection	Reputation
daisy.ubuntu.com	162.213.35.24	true	false		unknown

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	6a7R9UXFMM.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	fZUVfiCmaP.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	6T1S0q3QLa.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	iFTZfjcn8I.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	ZTdbNpZxxn.elf	Get hash	malicious	Unknown	Browse	162.213.35.25
	hs1vfUvu3u.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	o9iTBDHM4c.elf	Get hash	malicious	Muhstik, Tsunami	Browse	162.213.35.25
	6yiGxrfAp6.elf	Get hash	malicious	Muhstik, Tsunami	Browse	162.213.35.24
	6xgygBGC1W.elf	Get hash	malicious	Muhstik, Tsunami	Browse	162.213.35.25
	sz4KFQghEA.elf	Get hash	malicious	Muhstik, Tsunami	Browse	162.213.35.24

File type:	ELF 32-bit MSB executable, MIPS, MIPS-I version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.1273877232377725
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	oTkRt5RqnR.elf
File size:	193'792 bytes
MD5:	500c6f75dfbaadbedcc4d17795af7a28
SHA1:	6c9abd19e88ce4537fc834491defe28bc8105e4b
SHA256:	0ded79594ce6d79bcf1b7e5a16e329e0d00f4e00999a156cdcadf180a66673d5
SHA512:	9e863bd1fab071d25615c6ea501a27c8dc8e8a71cd0021a19da1522380ac62f6b688d97c99e5cf0ec2d49c97a745ccaea61a513328f37728b4d6a66c6a47b7b2
SSDEEP:	3072:sseHi0ewt6mWNg3DEiu0R0sjAym3N69DB:sseHichM53N4l
TLSH:	4D14A71E6E228F7DF669873047B74E209B5922D617E1D680E1ACC5105F2439E681FFBC
File Content Preview:	.ELF.....................@.p...4.........4. ...(.............@...@...........................F...F....Rh...0........dt.Q............................<...'.g....!'.......................<...'.g....!........'9... ......................<...'.g....!... ....'9f

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, big endian
Version:	1 (current)
Machine:	MIPS R3000
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x400270
Flags:	0x1007
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	193232
Section Header Size:	40
Number of Section Headers:	14
Header String Table Index:	13

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x400094	0x94	0x8c	0x0	0x6	AX	4
.text	PROGBITS	0x400120	0x120	0x26620	0x0	0x6	AX	16
.fini	PROGBITS	0x426740	0x26740	0x5c	0x0	0x6	AX	4
.rodata	PROGBITS	0x4267a0	0x267a0	0x3110	0x0	0x2	A	16
.ctors	PROGBITS	0x46a004	0x2a008	0xc	0x0	0x3	WA	4
.dtors	PROGBITS	0x46a010	0x2a014	0x8	0x0	0x3	WA	4
.data.rel.ro	PROGBITS	0x46a01c	0x2a020	0xe4	0x0	0x3	WA	4
.data	PROGBITS	0x46a100	0x2a104	0x4778	0x0	0x3	WA	32
.got	PROGBITS	0x46e880	0x2e884	0x9e8	0x4	0x10000003	WAp	16
.sbss	NOBITS	0x46f268	0x2f26c	0x58	0x0	0x10000003	WAp	4
.bss	NOBITS	0x46f2c0	0x2f26c	0x4b74	0x0	0x3	WA	16
.mdebug.abi32	PROGBITS	0x127e	0x2f26c	0x0	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x2f26c	0x64	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x400000	0x400000	0x298b0	0x298b0	5.5003	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0x2a004	0x46a004	0x46a000	0x5268	0x19e30	1.2213	0x6	RW	0x10000	.ctors .dtors .data.rel.ro .data .got .sbss .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Timestamp	Source Port	Dest Port	Source IP	Dest IP
May 24, 2024 20:48:57.471067905 CEST	43739	53	192.168.2.15	1.1.1.1
May 24, 2024 20:48:57.472079039 CEST	45661	53	192.168.2.15	1.1.1.1
May 24, 2024 20:48:57.480798006 CEST	53	43739	1.1.1.1	192.168.2.15
May 24, 2024 20:48:57.485627890 CEST	53	45661	1.1.1.1	192.168.2.15

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
May 24, 2024 20:48:57.471067905 CEST	192.168.2.15	1.1.1.1	0xe9b6	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
May 24, 2024 20:48:57.472079039 CEST	192.168.2.15	1.1.1.1	0x4fd4	Standard query (0)	daisy.ubuntu.com	28	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
May 24, 2024 20:48:57.480798006 CEST	1.1.1.1	192.168.2.15	0xe9b6	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false
May 24, 2024 20:48:57.480798006 CEST	1.1.1.1	192.168.2.15	0xe9b6	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: dash PID: 5505, Parent PID: 3671

General

Start time (UTC):	18:48:45
Start date (UTC):	24/05/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	18:48:45
Start date (UTC):	24/05/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.uxGVCf1ieD /tmp/tmp.BcFYK5GTyY /tmp/tmp.r6SilTGQD0
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Start time (UTC):	18:48:45
Start date (UTC):	24/05/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	18:48:45
Start date (UTC):	24/05/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.uxGVCf1ieD /tmp/tmp.BcFYK5GTyY /tmp/tmp.r6SilTGQD0
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Start time (UTC):	18:48:55
Start date (UTC):	24/05/2024
Path:	/tmp/oTkRt5RqnR.elf
Arguments:	/tmp/oTkRt5RqnR.elf
File size:	5777432 bytes
MD5 hash:	0083f1f0e77be34ad27f849842bbb00c

Description:	This technique has been deprecated. Please use Command and Scripting Interpreter where appropriate.
Tactics:	Defense Evasion, Execution
Data Sources:
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may delete files left behind by the actions of their intrusion activity. Malware, tools, or other non-native files dropped or created on a system by an adversary (ex: Ingress Tool Transfer ) may leave traces to indicate to what was done within a network and how. Removal of these files can occur during an intrusion, or as part of a post-intrusion process to minimize the adversary's footprint.
Tactics:	Defense Evasion
Data Sources:	Command: Command Execution, File: File Deletion
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may attempt to get a listing of security software, configurations, defensive tools, and sensors that are installed on a system or in a cloud environment. This may include things such as firewall rules and anti-virus. Adversaries may use the information from Security Software Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	Command: Command Execution, Firewall: Firewall Enumeration, Firewall: Firewall Metadata, Process: OS API Execution, Process: Process Creation
Platforms:	Azure AD, Google Workspace, IaaS, Linux, macOS, Office 365, SaaS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may use an OSI non-application layer protocol for communication between host and C2 server or among infected hosts within a network. The list of possible protocols is extensive.Specific examples include use of network layer protocols, such as the Internet Control Message Protocol (ICMP), transport layer protocols, such as the User Datagram Protocol (UDP), session layer protocols, such as Socket Secure (SOCKS), as well as redirected/tunneled protocols, such as Serial over LAN (SOL).
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using OSI application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Warning!

Linux Analysis Report oTkRt5RqnR.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Memory Dumps

Snort Signatures

Joe Sandbox Signatures

AV Detection

Spreading

Networking

System Summary

Persistence and Installation Behavior

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Screenshots

Thumbnails

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

World Map of Contacted IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

Network Port Distribution

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: dash PID: 5505, Parent PID: 3671

General

Chronological Activities

Analysis Process: rm PID: 5505, Parent PID: 3671

General

Chronological Activities

Analysis Process: dash PID: 5506, Parent PID: 3671

General

Chronological Activities

Analysis Process: rm PID: 5506, Parent PID: 3671

General

Chronological Activities

Analysis Process: oTkRt5RqnR.elf PID: 5519, Parent PID: 5442

General

Chronological Activities

Linux Analysis Report
oTkRt5RqnR.elf