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Linux Analysis Report
WINSx8yLsb.elf

Overview

General Information

Sample name:	WINSx8yLsb.elf renamed because original name is a hash value
Original sample name:	b6bed2c3f645c2e47250ae7f58c67764.elf
Analysis ID:	1430853
MD5:	b6bed2c3f645c2e47250ae7f58c67764
SHA1:	2e62651a57b89be51fc2db132c20dc868407d405
SHA256:	db5c7320a732f11c4dc48df11a489fb49639478c1b9988c7245d78acba492007
Tags:	32elfmiraisparc
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

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

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

Analysis Advice

Static ELF header machine description suggests that the sample might not execute correctly on this machine.

Exit code information suggests that the sample terminated abnormally, try to lookup the sample's target architecture.

All HTTP servers contacted by the sample do not answer. The sample is likely an old dropper which does no longer work.

Non-zero exit code suggests an error during the execution. Lookup the error code for hints.

General Information

Joe Sandbox version:	40.0.0 Tourmaline
Analysis ID:	1430853
Start date and time:	2024-04-24 10:10:10 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 40s
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:	WINSx8yLsb.elf renamed because original name is a hash value
Original Sample Name:	b6bed2c3f645c2e47250ae7f58c67764.elf
Detection:	MAL
Classification:	mal88.troj.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/WINSx8yLsb.elf
PID:	6239
Exit Code:	139
Exit Code Info:	SIGSEGV (11) Segmentation fault invalid memory reference
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

WINSx8yLsb.elf (PID: 6239, Parent: 6164, MD5: 7dc1c0e23cd5e102bb12e5c29403410e) Arguments: /tmp/WINSx8yLsb.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
WINSx8yLsb.elf	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
WINSx8yLsb.elf	JoeSecurity_Mirai_3	Yara detected Mirai	Joe Security
WINSx8yLsb.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
WINSx8yLsb.elf	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x1e038:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e04c:$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 0x1e060:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e074:$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 0x1e088:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e09c:$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 0x1e0b0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e0c4:$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 0x1e0d8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e0ec:$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 0x1e100:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e114:$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 0x1e128:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e13c:$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 0x1e150:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e164:$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 0x1e178:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e18c:$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 0x1e1a0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e1b4:$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 0x1e1c8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
WINSx8yLsb.elf	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x1def0:$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
6239.1.00007feb60011000.00007feb60032000.r-x.sdmp	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
6239.1.00007feb60011000.00007feb60032000.r-x.sdmp	JoeSecurity_Mirai_3	Yara detected Mirai	Joe Security
6239.1.00007feb60011000.00007feb60032000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
6239.1.00007feb60011000.00007feb60032000.r-x.sdmp	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x1e038:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e04c:$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 0x1e060:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e074:$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 0x1e088:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e09c:$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 0x1e0b0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e0c4:$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 0x1e0d8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e0ec:$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 0x1e100:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e114:$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 0x1e128:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e13c:$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 0x1e150:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e164:$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 0x1e178:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e18c:$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 0x1e1a0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x1e1b4:$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 0x1e1c8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
6239.1.00007feb60011000.00007feb60032000.r-x.sdmp	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x1def0:$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: WINSx8yLsb.elf PID: 6239	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
Process Memory Space: WINSx8yLsb.elf PID: 6239	JoeSecurity_Mirai_3	Yara detected Mirai	Joe Security
Process Memory Space: WINSx8yLsb.elf PID: 6239	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x2f11:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x2f25:$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 0x2f39:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x2f4d:$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 0x2f61:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x2f75:$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 0x2f89:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x2f9d:$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 0x2fb1:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x2fc5:$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 0x2fd9:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x2fed:$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 0x3001:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x3015:$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 0x3029:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x303d:$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 0x3051:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x3065:$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 0x3079:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x308d:$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 0x30a1:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
Process Memory Space: WINSx8yLsb.elf PID: 6239	Linux_Trojan_Gafgyt_ea92cca8	unknown	unknown	0x2df7:$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 4 entries

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus / Scanner detection for submitted sample

Source: WINSx8yLsb.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: WINSx8yLsb.elf

ReversingLabs: Detection: 47%

Source: WINSx8yLsb.elf

String: HTTP/1.1 200 OKtop1hbt.armtop1hbt.arm5top1hbt.arm6top1hbt.arm7top1hbt.mipstop1hbt.mpsltop1hbt.x86_64top1hbt.sh4/proc/proc/%d/cmdlinernetstatwgetcurlbusybox/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/run/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/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZc3f

Source: global traffic	TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global traffic	TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic	TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80

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: 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 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

System Summary

Malicious sample detected (through community Yara rule)

Source: WINSx8yLsb.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: WINSx8yLsb.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: 6239.1.00007feb60011000.00007feb60032000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6239.1.00007feb60011000.00007feb60032000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: Process Memory Space: WINSx8yLsb.elf PID: 6239, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: WINSx8yLsb.elf PID: 6239, 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/cmdlinernetstatwgetcurlbusybox/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/run/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/abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZc3f

Source: ELF static info symbol of initial sample

.symtab present: no

Source: WINSx8yLsb.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: WINSx8yLsb.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: 6239.1.00007feb60011000.00007feb60032000.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: 6239.1.00007feb60011000.00007feb60032000.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: WINSx8yLsb.elf PID: 6239, 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: WINSx8yLsb.elf PID: 6239, 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@0/0

Source: /tmp/WINSx8yLsb.elf (PID: 6239)

Queries kernel information via 'uname':

Jump to behavior

Source: WINSx8yLsb.elf, 6239.1.000055a1b7fb4000.000055a1b8019000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/sparc
Source: WINSx8yLsb.elf, 6239.1.000055a1b7fb4000.000055a1b8019000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/sparc
Source: WINSx8yLsb.elf, 6239.1.00007ffd42677000.00007ffd42698000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-sparc
Source: WINSx8yLsb.elf, 6239.1.00007ffd42677000.00007ffd42698000.rw-.sdmp	Binary or memory string: hx86_64/usr/bin/qemu-sparc/tmp/WINSx8yLsb.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/WINSx8yLsb.elf

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: WINSx8yLsb.elf, type: SAMPLE
Source: Yara match	File source: 6239.1.00007feb60011000.00007feb60032000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: WINSx8yLsb.elf PID: 6239, type: MEMORYSTR

Yara detected Okiru

Source: Yara match	File source: WINSx8yLsb.elf, type: SAMPLE
Source: Yara match	File source: 6239.1.00007feb60011000.00007feb60032000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: WINSx8yLsb.elf PID: 6239, type: MEMORYSTR

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: WINSx8yLsb.elf, type: SAMPLE
Source: Yara match	File source: 6239.1.00007feb60011000.00007feb60032000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: WINSx8yLsb.elf PID: 6239, type: MEMORYSTR

Yara detected Okiru

Source: Yara match	File source: WINSx8yLsb.elf, type: SAMPLE
Source: Yara match	File source: 6239.1.00007feb60011000.00007feb60032000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: WINSx8yLsb.elf PID: 6239, 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	Direct Volume Access	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Encrypted Channel	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

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Legend:

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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
WINSx8yLsb.elf	47%	ReversingLabs	Linux.Trojan.Mirai
WINSx8yLsb.elf	100%	Avira	EXP/ELF.Mirai.Z.A

No. of IPs < 25%
25% < No. of IPs < 50%
50% < No. of IPs < 75%
75% < No. of IPs

Public IPs

IP	Domain	Country	ASN	ASN Name	Malicious
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

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
109.202.202.202	Rubify.arm.elf	Get hash	malicious	Mirai	Browse
	2TZqqUPBJw.elf	Get hash	malicious	Mirai, Okiru	Browse
	VlmPWVuJv9.elf	Get hash	malicious	Mirai, Okiru	Browse
	ke9n9bQgFS.elf	Get hash	malicious	Mirai, Okiru	Browse
	8awpc7GpMh.elf	Get hash	malicious	Unknown	Browse
	6WfrjCTjs8.elf	Get hash	malicious	Unknown	Browse
	cG1d8L6E2V.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.Linux.Siggen.9999.14268.13066.elf	Get hash	malicious	Mirai	Browse
	nQ95n6pvWY.elf	Get hash	malicious	Mirai	Browse
91.189.91.43	Rubify.arm.elf	Get hash	malicious	Mirai	Browse
	2TZqqUPBJw.elf	Get hash	malicious	Mirai, Okiru	Browse
	VlmPWVuJv9.elf	Get hash	malicious	Mirai, Okiru	Browse
	ke9n9bQgFS.elf	Get hash	malicious	Mirai, Okiru	Browse
	8awpc7GpMh.elf	Get hash	malicious	Unknown	Browse
	6WfrjCTjs8.elf	Get hash	malicious	Unknown	Browse
	cG1d8L6E2V.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.Linux.Siggen.9999.14268.13066.elf	Get hash	malicious	Mirai	Browse
	nQ95n6pvWY.elf	Get hash	malicious	Mirai	Browse
91.189.91.42	Rubify.arm.elf	Get hash	malicious	Mirai	Browse
	2TZqqUPBJw.elf	Get hash	malicious	Mirai, Okiru	Browse
	VlmPWVuJv9.elf	Get hash	malicious	Mirai, Okiru	Browse
	ke9n9bQgFS.elf	Get hash	malicious	Mirai, Okiru	Browse
	8awpc7GpMh.elf	Get hash	malicious	Unknown	Browse
	6WfrjCTjs8.elf	Get hash	malicious	Unknown	Browse
	cG1d8L6E2V.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.Linux.Siggen.9999.14268.13066.elf	Get hash	malicious	Mirai	Browse
	nQ95n6pvWY.elf	Get hash	malicious	Mirai	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	Rubify.arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	2TZqqUPBJw.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	VlmPWVuJv9.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	ke9n9bQgFS.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	az9a0rNKvy.elf	Get hash	malicious	Mirai, Okiru	Browse	185.125.190.26
	8awpc7GpMh.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	6WfrjCTjs8.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	cG1d8L6E2V.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.Linux.Siggen.9999.14268.13066.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
CANONICAL-ASGB	Rubify.arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	2TZqqUPBJw.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	VlmPWVuJv9.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	ke9n9bQgFS.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	az9a0rNKvy.elf	Get hash	malicious	Mirai, Okiru	Browse	185.125.190.26
	8awpc7GpMh.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	6WfrjCTjs8.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	cG1d8L6E2V.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	SecuriteInfo.com.Linux.Siggen.9999.14268.13066.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
INIT7CH	Rubify.arm.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	2TZqqUPBJw.elf	Get hash	malicious	Mirai, Okiru	Browse	109.202.202.202
	VlmPWVuJv9.elf	Get hash	malicious	Mirai, Okiru	Browse	109.202.202.202
	ke9n9bQgFS.elf	Get hash	malicious	Mirai, Okiru	Browse	109.202.202.202
	8awpc7GpMh.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	6WfrjCTjs8.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	cG1d8L6E2V.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	SecuriteInfo.com.Linux.Siggen.9999.14268.13066.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	nQ95n6pvWY.elf	Get hash	malicious	Mirai	Browse	109.202.202.202

File type:	ELF 32-bit MSB executable, SPARC, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.61422684311786
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	WINSx8yLsb.elf
File size:	152'488 bytes
MD5:	b6bed2c3f645c2e47250ae7f58c67764
SHA1:	2e62651a57b89be51fc2db132c20dc868407d405
SHA256:	db5c7320a732f11c4dc48df11a489fb49639478c1b9988c7245d78acba492007
SHA512:	0c82667b9da356ce37fbd8ff45ffdedf6ac0f679761c3c5c79abef13a2d82b0fb314290f368c8c8205e46aae21c4ae7c4d6f097c2b4fc249a05731d4a11b6ef0
SSDEEP:	1536:ObLvu3QogKZvZpuoaxeH0a7kcp132l45atDT8bH+wDNvLctwqwkyOGqRijzZqTj:dP7nWdFQ7+Cbqwei3Zqn
TLSH:	81E3182277B60A27C4E4A57AB1F75733B2B947C614ACC60B3EA10D8D6FA95503113BF8
File Content Preview:	.ELF...........................4..Q......4. ...(.......................<...<...............@...@...<..K8...(........dt.Q................................@..(....@.u.................#.....ax..`.....!....."...@.....".........`......$"..."...@...........`....

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, big endian
Version:	1 (current)
Machine:	Sparc
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x101a4
Flags:	0x0
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	152008
Section Header Size:	40
Number of Section Headers:	12
Header String Table Index:	11

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x10094	0x94	0x1c	0x0	0x6	AX	4
.text	PROGBITS	0x100b0	0xb0	0x1d77c	0x0	0x6	AX	4
.fini	PROGBITS	0x2d82c	0x1d82c	0x14	0x0	0x6	AX	4
.rodata	PROGBITS	0x2d840	0x1d840	0x2dfc	0x0	0x2	A	8
.ctors	PROGBITS	0x40640	0x20644	0xc	0x0	0x3	WA	4
.dtors	PROGBITS	0x4064c	0x20650	0x8	0x0	0x3	WA	4
.data.rel.ro	PROGBITS	0x40658	0x2065c	0x78	0x0	0x3	WA	4
.got	PROGBITS	0x406d0	0x206d4	0x3ac	0x4	0x3	WA	4
.data	PROGBITS	0x40a80	0x20a84	0x46f4	0x0	0x3	WA	32
.bss	NOBITS	0x45178	0x25178	0x49f0	0x0	0x3	WA	8
.shstrtab	STRTAB	0x0	0x25178	0x50	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x10000	0x10000	0x2063c	0x2063c	6.0558	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0x20640	0x40640	0x4063c	0x4b38	0x9528	0.8010	0x6	RW	0x10000	.ctors .dtors .data.rel.ro .got .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x4

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 24, 2024 10:10:57.606815100 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 24, 2024 10:11:03.237932920 CEST	42836	443	192.168.2.23	91.189.91.43
Apr 24, 2024 10:11:04.005927086 CEST	42516	80	192.168.2.23	109.202.202.202
Apr 24, 2024 10:11:17.827945948 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 24, 2024 10:11:30.114228964 CEST	42836	443	192.168.2.23	91.189.91.43
Apr 24, 2024 10:11:34.209727049 CEST	42516	80	192.168.2.23	109.202.202.202
Apr 24, 2024 10:11:58.782341003 CEST	43928	443	192.168.2.23	91.189.91.42

System Behavior

Analysis Process: WINSx8yLsb.elf PID: 6239, Parent PID: 6164

General

Start time (UTC):	08:10:56
Start date (UTC):	24/04/2024
Path:	/tmp/WINSx8yLsb.elf
Arguments:	/tmp/WINSx8yLsb.elf
File size:	4379400 bytes
MD5 hash:	7dc1c0e23cd5e102bb12e5c29403410e

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 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 employ a known encryption algorithm to conceal command and control traffic rather than relying on any inherent protections provided by a communication protocol. Despite the use of a secure algorithm, these implementations may be vulnerable to reverse engineering if secret keys are encoded and/or generated within malware samples/configuration files.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content
Platforms:	Linux, macOS, 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 WINSx8yLsb.elf

Overview

General Information

Detection

Signatures

Classification

Analysis Advice

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

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

World Map of Contacted IPs

Public 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

TCP Packets

System Behavior

Analysis Process: WINSx8yLsb.elf PID: 6239, Parent PID: 6164

General

Chronological Activities

Linux Analysis Report
WINSx8yLsb.elf