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Linux Analysis Report
Nyx4r.arm.elf

Overview

General Information

Sample name:	Nyx4r.arm.elf
Analysis ID:	1644252
MD5:	f16c590b5da36ff2ac327f087025a412
SHA1:	a56041adc6ad856237da497ae85bd827eeeadd48
SHA256:	117e0db951bdab2caf45908b91fbab951f8d344a8b5a04b85f0c66609084bb98
Tags:	elfMiraiuser-abuse_ch
Infos:

Detection

Okiru

Score:	64
Range:	0 - 100

Signatures

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

Yara detected Okiru

Detected TCP or UDP traffic on non-standard ports

Enumerates processes within the "proc" file system

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

Sample listens on a socket

Sample tries to kill a process (SIGKILL)

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1644252
Start date and time:	2025-03-20 13:42:38 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 5m 5s
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:	Nyx4r.arm.elf
Detection:	MAL
Classification:	mal64.troj.linELF@0/0@0/0

Warnings

Report size exceeded maximum capacity and may have missing network information.

Runtime Messages

Command:	/tmp/Nyx4r.arm.elf
PID:	5424
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	[NightProjext]Killer_Instance_started
Standard Error:

Process Tree

system is lnxubuntu20

Nyx4r.arm.elf (PID: 5424, Parent: 5346, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/Nyx4r.arm.elf

Nyx4r.arm.elf New Fork (PID: 5426, Parent: 5424)

Nyx4r.arm.elf New Fork (PID: 5427, Parent: 5424)

Nyx4r.arm.elf New Fork (PID: 5429, Parent: 5424)

Nyx4r.arm.elf New Fork (PID: 5431, Parent: 5429)

Nyx4r.arm.elf New Fork (PID: 5433, Parent: 5429)

Nyx4r.arm.elf New Fork (PID: 5436, Parent: 5429)

Nyx4r.arm.elf New Fork (PID: 5437, Parent: 5429)

Nyx4r.arm.elf New Fork (PID: 5439, Parent: 5429)

Nyx4r.arm.elf New Fork (PID: 5441, Parent: 5429)

dash New Fork (PID: 5488, Parent: 3588)

rm (PID: 5488, Parent: 3588, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.YQg3YTRKMY /tmp/tmp.vHv5B74BMI /tmp/tmp.RjBbbVg8Zp

dash New Fork (PID: 5489, Parent: 3588)

cat (PID: 5489, Parent: 3588, MD5: 7e9d213e404ad3bb82e4ebb2e1f2c1b3) Arguments: cat /tmp/tmp.YQg3YTRKMY

dash New Fork (PID: 5490, Parent: 3588)

head (PID: 5490, Parent: 3588, MD5: fd96a67145172477dd57131396fc9608) Arguments: head -n 10

dash New Fork (PID: 5491, Parent: 3588)

tr (PID: 5491, Parent: 3588, MD5: fbd1402dd9f72d8ebfff00ce7c3a7bb5) Arguments: tr -d \\000-\\011\\013\\014\\016-\\037

dash New Fork (PID: 5492, Parent: 3588)

cut (PID: 5492, Parent: 3588, MD5: d8ed0ea8f22c0de0f8692d4d9f1759d3) Arguments: cut -c -80

dash New Fork (PID: 5493, Parent: 3588)

cat (PID: 5493, Parent: 3588, MD5: 7e9d213e404ad3bb82e4ebb2e1f2c1b3) Arguments: cat /tmp/tmp.YQg3YTRKMY

dash New Fork (PID: 5494, Parent: 3588)

head (PID: 5494, Parent: 3588, MD5: fd96a67145172477dd57131396fc9608) Arguments: head -n 10

dash New Fork (PID: 5495, Parent: 3588)

tr (PID: 5495, Parent: 3588, MD5: fbd1402dd9f72d8ebfff00ce7c3a7bb5) Arguments: tr -d \\000-\\011\\013\\014\\016-\\037

dash New Fork (PID: 5496, Parent: 3588)

cut (PID: 5496, Parent: 3588, MD5: d8ed0ea8f22c0de0f8692d4d9f1759d3) Arguments: cut -c -80

dash New Fork (PID: 5497, Parent: 3588)

rm (PID: 5497, Parent: 3588, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.YQg3YTRKMY /tmp/tmp.vHv5B74BMI /tmp/tmp.RjBbbVg8Zp

cleanup

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
Nyx4r.arm.elf	JoeSecurity_Okiru	Yara detected Okiru	Joe Security

Memory Dumps

Source	Rule	Description	Author
5427.1.00007f9ad0017000.00007f9ad0029000.r-x.sdmp	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
5436.1.00007f9ad0017000.00007f9ad0029000.r-x.sdmp	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
5424.1.00007f9ad0017000.00007f9ad0029000.r-x.sdmp	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
Process Memory Space: Nyx4r.arm.elf PID: 5424	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
Process Memory Space: Nyx4r.arm.elf PID: 5427	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
Process Memory Space: Nyx4r.arm.elf PID: 5436	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
Click to see the 1 entries

HTTP traffic detected: GET / HTTP/1.1User-Agent: wget/1.20.3-1ubuntu1 Ubuntu/20.04.2/LTS GNU/Linux/5.4.0-72-generic/x86_64 Intel(R)/Xeon(R)/Silver/4210/CPU/@/2.20GHz cloud_id/noneAccept: */*Accept-Encoding: identityHost: motd.ubuntu.comConnection: Keep-Alive

Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 50544
Source: unknown	Network traffic detected: HTTP traffic on port 50544 -> 443

Source: Initial sample	String containing 'busybox' found: /bin/busybox
Source: Initial sample	String containing 'busybox' found: var/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdanko-app/ankosample _8182T_1104var/tmp/soniahicorestm_hi3511_dvr/bin/busybox/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/SofiasshdbashhttpdtelnetddropbearropbearencodersystemNyx4ar/root/dvr_gui//root/dvr_app//anko-app//opt/157.245.200.182

Source: ELF static info symbol of initial sample

.symtab present: no

Source: /tmp/Nyx4r.arm.elf (PID: 5433)

SIGKILL sent: pid: 5426, result: successful

Jump to behavior

Source: classification engine

Classification label: mal64.troj.linELF@0/0@0/0

Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/5263/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3122/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3117/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3114/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/914/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/917/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3134/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3375/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3132/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3095/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1745/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1866/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1588/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/884/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1982/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/765/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3246/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/800/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/767/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1906/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/802/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/803/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3644/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/5426/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1748/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3420/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1482/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/490/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1480/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1755/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1875/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/2964/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3413/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1751/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1872/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/2961/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1475/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/778/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/936/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/816/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3778/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1879/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1891/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3310/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3153/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/780/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/660/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1921/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/783/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1765/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/2974/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1400/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1884/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3424/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/2972/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3147/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/2970/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1881/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3146/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3300/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1805/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1925/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1804/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1922/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3429/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3442/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3165/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3164/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3163/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3162/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/790/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3161/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/792/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/793/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1930/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/795/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3315/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1411/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/2984/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1410/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/797/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3434/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3158/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3676/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3170/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3208/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3327/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3448/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1940/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3203/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/726/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/727/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1946/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1944/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3209/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3181/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3100/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3342/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3220/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3185/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3183/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3182/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/1832/fd	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	File opened: /proc/3336/fd	Jump to behavior

Source: /usr/bin/dash (PID: 5488)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.YQg3YTRKMY /tmp/tmp.vHv5B74BMI /tmp/tmp.RjBbbVg8Zp			Jump to behavior
Source: /usr/bin/dash (PID: 5497)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.YQg3YTRKMY /tmp/tmp.vHv5B74BMI /tmp/tmp.RjBbbVg8Zp			Jump to behavior

Source: /tmp/Nyx4r.arm.elf (PID: 5424)

Queries kernel information via 'uname':

Jump to behavior

Source: Nyx4r.arm.elf, 5424.1.00007ffc1f068000.00007ffc1f089000.rw-.sdmp, Nyx4r.arm.elf, 5427.1.00007ffc1f068000.00007ffc1f089000.rw-.sdmp, Nyx4r.arm.elf, 5436.1.00007ffc1f068000.00007ffc1f089000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/Nyx4r.arm.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/Nyx4r.arm.elf
Source: Nyx4r.arm.elf, 5424.1.000055eb6d158000.000055eb6d286000.rw-.sdmp, Nyx4r.arm.elf, 5427.1.000055eb6d158000.000055eb6d286000.rw-.sdmp, Nyx4r.arm.elf, 5436.1.000055eb6d158000.000055eb6d286000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: Nyx4r.arm.elf, 5424.1.000055eb6d158000.000055eb6d286000.rw-.sdmp, Nyx4r.arm.elf, 5427.1.000055eb6d158000.000055eb6d286000.rw-.sdmp, Nyx4r.arm.elf, 5436.1.000055eb6d158000.000055eb6d286000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: Nyx4r.arm.elf, 5424.1.00007ffc1f068000.00007ffc1f089000.rw-.sdmp, Nyx4r.arm.elf, 5427.1.00007ffc1f068000.00007ffc1f089000.rw-.sdmp, Nyx4r.arm.elf, 5436.1.00007ffc1f068000.00007ffc1f089000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm

Stealing of Sensitive Information

Yara detected Okiru

Source: Yara match	File source: Nyx4r.arm.elf, type: SAMPLE
Source: Yara match	File source: 5427.1.00007f9ad0017000.00007f9ad0029000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5436.1.00007f9ad0017000.00007f9ad0029000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5424.1.00007f9ad0017000.00007f9ad0029000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: Nyx4r.arm.elf PID: 5424, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: Nyx4r.arm.elf PID: 5427, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: Nyx4r.arm.elf PID: 5436, type: MEMORYSTR

Remote Access Functionality

Yara detected Okiru

Source: Yara match	File source: Nyx4r.arm.elf, type: SAMPLE
Source: Yara match	File source: 5427.1.00007f9ad0017000.00007f9ad0029000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5436.1.00007f9ad0017000.00007f9ad0029000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: 5424.1.00007f9ad0017000.00007f9ad0029000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: Nyx4r.arm.elf PID: 5424, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: Nyx4r.arm.elf PID: 5427, type: MEMORYSTR
Source: Yara match	File source: Process Memory Space: Nyx4r.arm.elf PID: 5436, 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	Acquire Infrastructure	Valid Accounts	Windows Management Instrumentation	Path Interception	Path Interception	1 File Deletion	1 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 Non-Standard Port	Exfiltration Over Bluetooth	Network Denial of Service
Email Addresses	DNS Server	Domain Accounts	At	Logon Script (Windows)	Logon Script (Windows)	Obfuscated Files or Information	Security Account Manager	Query Registry	SMB/Windows Admin Shares	Data from Network Shared Drive	1 Non-Application Layer Protocol	Automated Exfiltration	Data Encrypted for Impact
Employee Names	Virtual Private Server	Local Accounts	Cron	Login Hook	Login Hook	Binary Padding	NTDS	System Network Configuration Discovery	Distributed Component Object Model	Input Capture	2 Application Layer Protocol	Traffic Duplication	Data Destruction
Gather Victim Network Information	Server	Cloud Accounts	Launchd	Network Logon Script	Network Logon Script	Software Packing	LSA Secrets	Internet Connection Discovery	SSH	Keylogging	1 Ingress Tool Transfer	Scheduled Transfer	Data Encrypted for Impact

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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
Nyx4r.arm.elf	54%	Virustotal		Browse
Nyx4r.arm.elf	61%	ReversingLabs	Linux.Trojan.Mirai
Nyx4r.arm.elf	100%	Avira	EXP/ELF.Mirai.Bootnet.o

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

⊘No contacted domains info

Contacted URLs

Name	Malicious	Antivirus Detection	Reputation
https://motd.ubuntu.com/	false		high

World Map of Contacted IPs

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
78.101.119.26	unknown	Qatar	42298	GCC-MPLS-PEERINGGCCMPLSpeeringQA	false
148.205.26.20	unknown	Mexico	21520	InstitutoTecnologicoAutonomodeMexicoITAMMX	false
60.243.230.224	unknown	India	17488	HATHWAY-NET-APHathwayIPOverCableInternetIN	false
78.109.3.133	unknown	Netherlands	13205	BTWWIDC-HAutonomousSystemGB	false
153.115.182.232	unknown	United States	12079	CELLCO-PARTUS	false
40.26.132.210	unknown	United States	4249	LILLY-ASUS	false
161.93.132.146	unknown	Japan	14298	EPA-NETUS	false
105.143.72.242	unknown	Morocco	6713	IAM-ASMA	false
66.16.127.134	unknown	United States	7029	WINDSTREAMUS	false
202.33.162.9	unknown	Japan	4725	ODNSoftBankMobileCorpJP	false
157.25.81.88	unknown	Poland	5588	GTSCEGTSCentralEuropeAntelGermanyCZ	false
172.208.75.230	unknown	United States	18747	IFX18747US	false
20.120.145.24	unknown	United States	8075	MICROSOFT-CORP-MSN-AS-BLOCKUS	false
172.211.10.49	unknown	United States	18747	IFX18747US	false
177.88.172.65	unknown	Brazil	53237	TELECOMUNICACOESBRASILEIRASSA-TELEBRASBR	false
98.74.118.35	unknown	United States	6389	BELLSOUTH-NET-BLKUS	false
109.146.97.97	unknown	United Kingdom	2856	BT-UK-ASBTnetUKRegionalnetworkGB	false
77.48.86.150	unknown	Czech Republic	6830	LIBERTYGLOBALLibertyGlobalformerlyUPCBroadbandHolding	false
206.148.112.45	unknown	United States	174	COGENT-174US	false
64.10.120.126	unknown	United States	701	UUNETUS	false
48.37.187.65	unknown	United States	2686	ATGS-MMD-ASUS	false
19.198.143.231	unknown	United States	3	MIT-GATEWAYSUS	false
161.23.201.132	unknown	United Kingdom	198864	QMW-AC-UK	false
245.2.135.217	unknown	Reserved	unknown	unknown	false
175.78.157.30	unknown	China	9394	CTTNETChinaTieTongTelecommunicationsCorporationCN	false
158.193.226.141	unknown	Slovakia (SLOVAK Republic)	2607	SANETSlovakAcademicNetworkSK	false
13.121.230.40	unknown	United States	16509	AMAZON-02US	false
65.86.111.0	unknown	United States	4565	MEGAPATH2-US	false
65.1.108.4	unknown	United States	16509	AMAZON-02US	false
201.6.129.128	unknown	Brazil	28573	CLAROSABR	false
186.203.31.21	unknown	Brazil	26615	TIMSABR	false
63.181.125.239	unknown	United States	1239	SPRINTLINKUS	false
80.207.151.13	unknown	Italy	20959	TELECOM-ITALIA-DATA-COMIT	false
174.147.157.112	unknown	United States	10507	SPCSUS	false
196.81.177.47	unknown	Morocco	6713	IAM-ASMA	false
221.210.146.171	unknown	China	4837	CHINA169-BACKBONECHINAUNICOMChina169BackboneCN	false
155.229.73.51	unknown	United States	18566	MEGAPATH5-US	false
88.28.26.207	unknown	Spain	3352	TELEFONICA_DE_ESPANAES	false
76.35.224.35	unknown	United States	18494	CENTURYLINK-LEGACY-EMBARQ-WRBGUS	false
218.48.37.107	unknown	Korea Republic of	9318	SKB-ASSKBroadbandCoLtdKR	false
156.133.93.245	unknown	Luxembourg	29975	VODACOM-ZA	false
92.227.202.196	unknown	Germany	6805	TDDE-ASN1DE	false
170.29.253.209	unknown	United States	33551	SISTERS-OF-MERCY-HEALTH-SYSTEMUS	false
223.233.54.253	unknown	India	45609	BHARTI-MOBILITY-AS-APBhartiAirtelLtdASforGPRSService	false
37.233.98.140	unknown	Poland	198717	TECHSTORAGEPL	false
168.86.99.7	unknown	United States	57717	FBX-ASNL	false
65.125.140.4	unknown	United States	27235	CVC-INET-33US	false
188.41.14.76	unknown	Turkey	20978	TT_MOBILIstanbulTR	false
186.150.162.49	unknown	Dominican Republic	28118	ALTICEDOMINICANASADO	false
248.136.65.101	unknown	Reserved	unknown	unknown	false
195.203.162.10	unknown	Germany	15854	HP_WEBSERVICESDE	false
213.190.39.179	unknown	Lithuania	8764	TELIA-LIETUVALT	false
46.169.96.209	unknown	Poland	8374	PLUSNETPlusnetworkoperatorinPolandPL	false
106.200.43.85	unknown	India	45609	BHARTI-MOBILITY-AS-APBhartiAirtelLtdASforGPRSService	false
123.130.86.250	unknown	China	4837	CHINA169-BACKBONECHINAUNICOMChina169BackboneCN	false
202.141.90.161	unknown	India	2697	ERX-ERNET-ASEducationandResearchNetworkIN	false
189.131.160.57	unknown	Mexico	8151	UninetSAdeCVMX	false
211.106.43.247	unknown	Korea Republic of	4766	KIXS-AS-KRKoreaTelecomKR	false
23.187.130.73	unknown	Reserved	395678	VC-AS-01US	false
85.34.205.24	unknown	Italy	3269	ASN-IBSNAZIT	false
209.33.50.96	unknown	United States	19108	SUDDENLINK-COMMUNICATIONSUS	false
94.204.154.128	unknown	United Arab Emirates	15802	DU-AS1AE	false
217.80.23.49	unknown	Germany	3320	DTAGInternetserviceprovideroperationsDE	false
23.69.75.116	unknown	United States	7922	COMCAST-7922US	false
210.85.191.233	unknown	Taiwan; Republic of China (ROC)	7482	APOL-ASAsiaPacificOn-lineServiceIncTW	false
151.5.73.231	unknown	Italy	1267	ASN-WINDTREIUNETEU	false
123.156.6.41	unknown	China	4837	CHINA169-BACKBONECHINAUNICOMChina169BackboneCN	false
2.230.214.30	unknown	Italy	12874	FASTWEBIT	false
168.146.249.227	unknown	United States	27435	OPSOURCE-INCUS	false
44.147.167.212	unknown	United States	62383	LDS-ASBE	false
77.147.255.203	unknown	France	15557	LDCOMNETFR	false
67.5.191.183	unknown	United States	209	CENTURYLINK-US-LEGACY-QWESTUS	false
45.219.30.130	unknown	Morocco	36925	ASMediMA	false
46.46.124.104	unknown	Ukraine	48045	FLAGMAN-ASUA	false
154.252.36.5	unknown	Algeria	36947	ALGTEL-ASDZ	false
108.225.227.15	unknown	United States	7018	ATT-INTERNET4US	false
149.189.128.225	unknown	United Kingdom	87	INDIANA-ASUS	false
138.227.8.44	unknown	Switzerland	12980	EMEAHostingAutonomousSystemEU	false
253.21.40.233	unknown	Reserved	unknown	unknown	false
63.152.59.105	unknown	United States	209	CENTURYLINK-US-LEGACY-QWESTUS	false
161.12.105.177	unknown	United Kingdom	61231	SSE-TELECOMSGB	false
17.88.42.150	unknown	United States	714	APPLE-ENGINEERINGUS	false
87.63.107.102	unknown	Denmark	3292	TDCTDCASDK	false
241.231.198.40	unknown	Reserved	unknown	unknown	false
88.39.151.22	unknown	Italy	3269	ASN-IBSNAZIT	false
174.116.98.198	unknown	Canada	812	ROGERS-COMMUNICATIONSCA	false
24.187.228.53	unknown	United States	6128	CABLE-NET-1US	false
159.175.94.59	unknown	Canada	26567	AS-LMGC-TOR-01CA	false
202.110.168.34	unknown	China	4134	CHINANET-BACKBONENo31Jin-rongStreetCN	false
154.48.159.33	unknown	United States	203499	WI-NET-SOLIS-ASES	false
64.61.240.52	unknown	United States	32946	RPU-1892US	false
255.167.240.67	unknown	Reserved	unknown	unknown	false
141.30.26.160	unknown	Germany	680	DFNVereinzurFoerderungeinesDeutschenForschungsnetzese	false
84.194.86.57	unknown	Belgium	6848	TELENET-ASBE	false
70.2.128.105	unknown	United States	10507	SPCSUS	false
65.197.77.170	unknown	United States	701	UUNETUS	false
94.151.120.63	unknown	Denmark	9158	TELENOR_DANMARK_ASDK	false
117.162.56.91	unknown	China	9808	CMNET-GDGuangdongMobileCommunicationCoLtdCN	false
156.15.144.93	unknown	United States	137	ASGARRConsortiumGARREU	false
65.79.21.218	unknown	United States	6325	ILLINOIS-CENTURYUS	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
19.198.143.231	Aqua.arm4-20231022-0333.elf	Get hash	malicious	Mirai	Browse
19.198.143.231	VJ11IcTTth	Get hash	malicious	Mirai	Browse
148.205.26.20	m68k.elf	Get hash	malicious	Unknown	Browse
66.16.127.134	RBsk5875Wv	Get hash	malicious	Mirai	Browse
78.109.3.133	7r792pU6AE.elf	Get hash	malicious	Unknown	Browse
157.25.81.88	fbot.arm.elf	Get hash	malicious	Mirai, Moobot	Browse
20.120.145.24	aINAxfu1PN.elf	Get hash	malicious	Mirai	Browse
153.115.182.232	g9hVd2UdvF	Get hash	malicious	Mirai	Browse
98.74.118.35	0DhzQiOnON.elf	Get hash	malicious	Mirai	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
InstitutoTecnologicoAutonomodeMexicoITAMMX	hgfs.mips.elf	Get hash	malicious	Unknown	Browse	148.205.126.53
	jklarm7.elf	Get hash	malicious	Unknown	Browse	148.205.74.106
	m68k.elf	Get hash	malicious	Unknown	Browse	148.205.26.20
	x86.elf	Get hash	malicious	Mirai, Moobot	Browse	148.205.74.115
	sora.mips.elf	Get hash	malicious	Mirai	Browse	148.205.51.47
	m68k.elf	Get hash	malicious	Mirai	Browse	148.205.74.110
	skid.mips.elf	Get hash	malicious	Mirai, Moobot	Browse	148.205.99.0
	xexngqLbiY.elf	Get hash	malicious	Gafgyt, Mirai	Browse	148.205.74.116
	9b7samXJWK.elf	Get hash	malicious	Mirai	Browse	148.205.51.10
	vd3Wm4qqIh.elf	Get hash	malicious	Mirai	Browse	148.205.26.14
GCC-MPLS-PEERINGGCCMPLSpeeringQA	mips.elf	Get hash	malicious	Unknown	Browse	176.202.64.25
	Owari.x86.elf	Get hash	malicious	Unknown	Browse	178.153.204.184
	star.ppc.elf	Get hash	malicious	Mirai, Moobot	Browse	176.202.29.145
	cbr.mips.elf	Get hash	malicious	Mirai	Browse	176.202.64.95
	mips.elf	Get hash	malicious	Mirai, Moobot	Browse	37.208.250.64
	splm68k.elf	Get hash	malicious	Unknown	Browse	178.153.204.193
	nabarm5.elf	Get hash	malicious	Unknown	Browse	89.211.206.115
	splspc.elf	Get hash	malicious	Unknown	Browse	37.208.250.93
	nklarm.elf	Get hash	malicious	Unknown	Browse	37.211.3.79
	nklmips.elf	Get hash	malicious	Unknown	Browse	37.208.129.6
CELLCO-PARTUS	Nyx4r.mpsl.elf	Get hash	malicious	Okiru	Browse	70.194.230.19
	sshd	Get hash	malicious	Unknown	Browse	63.54.18.114
	sshd	Get hash	malicious	Unknown	Browse	97.253.77.150
	jkse.ppc.elf	Get hash	malicious	Unknown	Browse	98.105.54.82
	jkse.arm5.elf	Get hash	malicious	Unknown	Browse	69.78.157.154
	jkse.arm5.elf	Get hash	malicious	Unknown	Browse	97.135.242.240
	jkse.arm.elf	Get hash	malicious	Unknown	Browse	70.198.124.247
	nklmpsl.elf	Get hash	malicious	Unknown	Browse	70.211.99.44
	nklspc.elf	Get hash	malicious	Unknown	Browse	97.251.90.108
	splsh4.elf	Get hash	malicious	Unknown	Browse	75.192.171.141
HATHWAY-NET-APHathwayIPOverCableInternetIN	hoho.i486.elf	Get hash	malicious	Unknown	Browse	115.99.154.248
	kaizen.ppc.elf	Get hash	malicious	Mirai	Browse	115.99.154.243
	x86.elf	Get hash	malicious	Unknown	Browse	115.106.223.188
	KKveTTgaAAsecNNaaaa.arm.elf	Get hash	malicious	Unknown	Browse	27.4.164.4
	splspc.elf	Get hash	malicious	Unknown	Browse	115.106.223.198
	jklarm7.elf	Get hash	malicious	Unknown	Browse	115.107.38.73
	rjfe686.elf	Get hash	malicious	Mirai	Browse	27.6.83.208
	nabarm7.elf	Get hash	malicious	Unknown	Browse	27.7.164.133
	splarm5.elf	Get hash	malicious	Unknown	Browse	27.6.83.240
	arm.elf	Get hash	malicious	Unknown	Browse	60.243.230.235
BTWWIDC-HAutonomousSystemGB	nklarm5.elf	Get hash	malicious	Unknown	Browse	193.37.190.63
	sora.arm.elf	Get hash	malicious	Unknown	Browse	78.109.3.180
	ughZ7R95TJ.elf	Get hash	malicious	Mirai	Browse	193.37.190.84
	Yui1pUgieI.elf	Get hash	malicious	Mirai	Browse	193.37.190.62
	oBnUnwroXT.elf	Get hash	malicious	Mirai	Browse	78.109.3.134
	pIDry4zybm.elf	Get hash	malicious	Mirai	Browse	78.109.3.177
	dYrp7L484w.elf	Get hash	malicious	Unknown	Browse	193.37.189.74
	TZDWxece6k.elf	Get hash	malicious	Mirai	Browse	78.109.3.124
	42GK8bXIF0.elf	Get hash	malicious	Mirai	Browse	193.37.189.78
	FtV0FviMeR.elf	Get hash	malicious	Mirai	Browse	78.109.3.170

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

⊘No created / dropped files found

Source: Nyx4r.arm.elf	Virustotal: Detection: 53%			Perma Link
Source: Nyx4r.arm.elf	ReversingLabs: Detection: 61%

Source: /tmp/Nyx4r.arm.elf (PID: 5426)	Socket: 0.0.0.0:0	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5426)	Socket: 0.0.0.0:53413	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	Socket: 0.0.0.0:0	Jump to behavior
Source: /tmp/Nyx4r.arm.elf (PID: 5433)	Socket: 0.0.0.0:53413	Jump to behavior

Source: unknown	TCP traffic detected without corresponding DNS query: 157.245.200.182
Source: unknown	TCP traffic detected without corresponding DNS query: 80.38.22.135
Source: unknown	TCP traffic detected without corresponding DNS query: 167.124.164.140
Source: unknown	TCP traffic detected without corresponding DNS query: 120.243.4.133
Source: unknown	TCP traffic detected without corresponding DNS query: 74.162.218.136
Source: unknown	TCP traffic detected without corresponding DNS query: 207.93.86.35
Source: unknown	TCP traffic detected without corresponding DNS query: 242.189.123.24
Source: unknown	TCP traffic detected without corresponding DNS query: 161.219.65.87
Source: unknown	TCP traffic detected without corresponding DNS query: 176.99.13.137
Source: unknown	TCP traffic detected without corresponding DNS query: 69.127.160.120
Source: unknown	TCP traffic detected without corresponding DNS query: 193.6.57.100
Source: unknown	TCP traffic detected without corresponding DNS query: 42.17.99.235
Source: unknown	TCP traffic detected without corresponding DNS query: 161.153.186.42
Source: unknown	TCP traffic detected without corresponding DNS query: 48.109.101.89
Source: unknown	TCP traffic detected without corresponding DNS query: 34.166.192.103
Source: unknown	TCP traffic detected without corresponding DNS query: 168.229.88.187
Source: unknown	TCP traffic detected without corresponding DNS query: 161.193.192.143
Source: unknown	TCP traffic detected without corresponding DNS query: 207.202.228.158
Source: unknown	TCP traffic detected without corresponding DNS query: 92.39.175.234
Source: unknown	TCP traffic detected without corresponding DNS query: 89.94.170.220
Source: unknown	TCP traffic detected without corresponding DNS query: 195.202.167.76
Source: unknown	TCP traffic detected without corresponding DNS query: 115.57.219.237
Source: unknown	TCP traffic detected without corresponding DNS query: 84.124.32.210
Source: unknown	TCP traffic detected without corresponding DNS query: 80.201.122.234
Source: unknown	TCP traffic detected without corresponding DNS query: 147.50.83.67
Source: unknown	TCP traffic detected without corresponding DNS query: 175.95.135.238
Source: unknown	TCP traffic detected without corresponding DNS query: 120.77.6.121
Source: unknown	TCP traffic detected without corresponding DNS query: 43.105.87.188
Source: unknown	TCP traffic detected without corresponding DNS query: 90.109.142.167
Source: unknown	TCP traffic detected without corresponding DNS query: 17.146.36.219
Source: unknown	TCP traffic detected without corresponding DNS query: 90.105.215.6
Source: unknown	TCP traffic detected without corresponding DNS query: 246.200.179.131
Source: unknown	TCP traffic detected without corresponding DNS query: 166.42.53.4
Source: unknown	TCP traffic detected without corresponding DNS query: 242.70.116.21
Source: unknown	TCP traffic detected without corresponding DNS query: 213.39.97.60
Source: unknown	TCP traffic detected without corresponding DNS query: 126.172.47.82
Source: unknown	TCP traffic detected without corresponding DNS query: 176.73.37.120
Source: unknown	TCP traffic detected without corresponding DNS query: 113.62.94.113
Source: unknown	TCP traffic detected without corresponding DNS query: 252.220.152.18
Source: unknown	TCP traffic detected without corresponding DNS query: 222.69.19.37
Source: unknown	TCP traffic detected without corresponding DNS query: 65.58.217.245
Source: unknown	TCP traffic detected without corresponding DNS query: 248.73.134.73
Source: unknown	TCP traffic detected without corresponding DNS query: 23.75.33.248
Source: unknown	TCP traffic detected without corresponding DNS query: 38.2.59.20
Source: unknown	TCP traffic detected without corresponding DNS query: 152.157.134.145
Source: unknown	TCP traffic detected without corresponding DNS query: 191.26.160.214
Source: unknown	TCP traffic detected without corresponding DNS query: 80.119.206.42
Source: unknown	TCP traffic detected without corresponding DNS query: 206.13.16.246
Source: unknown	TCP traffic detected without corresponding DNS query: 23.217.60.178
Source: unknown	TCP traffic detected without corresponding DNS query: 20.203.129.25

File type:	ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, stripped
Entropy (8bit):	6.069622408966299
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	Nyx4r.arm.elf
File size:	75'072 bytes
MD5:	f16c590b5da36ff2ac327f087025a412
SHA1:	a56041adc6ad856237da497ae85bd827eeeadd48
SHA256:	117e0db951bdab2caf45908b91fbab951f8d344a8b5a04b85f0c66609084bb98
SHA512:	fb36baac175dba6a5383356260870546fce386a9d6c67b992c98acb864da411036d03ea2734b4cfaaaf231c8fc250f9fd592f91831c4adfdfd48e3f5239ec8a1
SSDEEP:	1536:EST5U/JmFKMuFz+VmUaio05PX3OqoULx5C9vLn:ESTu/oiIew5/OE9WLn
TLSH:	C0732881B881AA26C3C153BBFF5F018D33159798D2EA33178D295F60778BD1B0D6B64A
File Content Preview:	.ELF...a..........(.........4....#......4. ...(.....................(...(................ ... ... ..p...x%..........Q.td..................................-...L."....B..........0@-.\P...0....S.0...P@...0... ....R......0...0...........0... ....R..... 0....S

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	ARM
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	ARM - ABI
ABI Version:	0
Entry Point Address:	0x8190
Flags:	0x202
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	74672
Section Header Size:	40
Number of Section Headers:	10
Header String Table Index:	9

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x8094	0x94	0x18	0x0	0x6	AX	4
.text	PROGBITS	0x80b0	0xb0	0x1087c	0x0	0x6	AX	16
.fini	PROGBITS	0x1892c	0x1092c	0x14	0x0	0x6	AX	4
.rodata	PROGBITS	0x18940	0x10940	0x14e8	0x0	0x2	A	4
.ctors	PROGBITS	0x22000	0x12000	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x22008	0x12008	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x22014	0x12014	0x35c	0x0	0x3	WA	4
.bss	NOBITS	0x22370	0x12370	0x2208	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0x12370	0x3e	0x0	0x0		1

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x8000	0x8000	0x11e28	0x11e28	6.1249	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0x12000	0x22000	0x22000	0x370	0x2578	2.2026	0x6	RW	0x8000	.ctors .dtors .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Timestamp	Bytes transferred	Direction	Data
2025-03-20 12:43:50 UTC	249	OUT	GET / HTTP/1.1 User-Agent: wget/1.20.3-1ubuntu1 Ubuntu/20.04.2/LTS GNU/Linux/5.4.0-72-generic/x86_64 Intel(R)/Xeon(R)/Silver/4210/CPU/@/2.20GHz cloud_id/none Accept: / Accept-Encoding: identity Host: motd.ubuntu.com Connection: Keep-Alive
2025-03-20 12:43:50 UTC	271	IN	HTTP/1.1 200 OK Date: Thu, 20 Mar 2025 12:43:50 GMT Server: Apache/2.4.18 (Ubuntu) Last-Modified: Thu, 20 Mar 2025 12:30:28 GMT ETag: "d8-630c54d92e43a" Accept-Ranges: bytes Content-Length: 216 Vary: Accept-Encoding Connection: close Content-Type: text/plain
2025-03-20 12:43:50 UTC	216	IN	Data Raw: 20 2a 20 53 74 72 69 63 74 6c 79 20 63 6f 6e 66 69 6e 65 64 20 4b 75 62 65 72 6e 65 74 65 73 20 6d 61 6b 65 73 20 65 64 67 65 20 61 6e 64 20 49 6f 54 20 73 65 63 75 72 65 2e 20 4c 65 61 72 6e 20 68 6f 77 20 4d 69 63 72 6f 4b 38 73 0a 20 20 20 6a 75 73 74 20 72 61 69 73 65 64 20 74 68 65 20 62 61 72 20 66 6f 72 20 65 61 73 79 2c 20 72 65 73 69 6c 69 65 6e 74 20 61 6e 64 20 73 65 63 75 72 65 20 4b 38 73 20 63 6c 75 73 74 65 72 20 64 65 70 6c 6f 79 6d 65 6e 74 2e 0a 0a 20 20 20 68 74 74 70 73 3a 2f 2f 75 62 75 6e 74 75 2e 63 6f 6d 2f 65 6e 67 61 67 65 2f 73 65 63 75 72 65 2d 6b 75 62 65 72 6e 65 74 65 73 2d 61 74 2d 74 68 65 2d 65 64 67 65 0a Data Ascii: * Strictly confined Kubernetes makes edge and IoT secure. Learn how MicroK8s just raised the bar for easy, resilient and secure K8s cluster deployment. https://ubuntu.com/engage/secure-kubernetes-at-the-edge

Start time (UTC):	12:43:21
Start date (UTC):	20/03/2025
Path:	/tmp/Nyx4r.arm.elf
Arguments:	/tmp/Nyx4r.arm.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Start time (UTC):	12:43:50
Start date (UTC):	20/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

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 dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password, from the operating system and software. Credentials can then be used to perform Lateral Movement and access restricted information.
Tactics:	Credential Access
Data Sources:	Active Directory: Active Directory Object Access, Command: Command Execution, File: File Access, Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow, Process: OS API Execution, Process: Process Access, Process: Process Creation, Windows Registry: Windows Registry Key Access
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 a protocol and port pairing that are typically not associated. For example, HTTPS over port 8088or port 587as opposed to the traditional port 443. Adversaries may make changes to the standard port used by a protocol to bypass filtering or muddle analysis/parsing of network data.
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

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

Description:	Adversaries may transfer tools or other files from an external system into a compromised environment. Tools or files may be copied from an external adversary-controlled system to the victim network through the command and control channel or through alternate protocols such as ftp . Once present, adversaries may also transfer/spread tools between victim devices within a compromised environment (i.e. Lateral Tool Transfer ).
Tactics:	Command and Control
Data Sources:	Command: Command Execution, File: File Creation, Network Traffic: Network Connection Creation, 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

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report Nyx4r.arm.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

Runtime Messages

Process Tree

Yara Signatures

Initial Sample

Memory Dumps

Suricata Signatures

Joe Sandbox Signatures

AV Detection

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

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

Contacted URLs

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

HTTPS Proxied Packets

System Behavior

Analysis Process: Nyx4r.arm.elf PID: 5424, Parent PID: 5346

General

File Activities

File Opened

File Read

Process Activities

Process Forked

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Connecting

Chronological Activities

Analysis Process: Nyx4r.arm.elf PID: 5426, Parent PID: 5424

General

File Activities

File Opened

File Read

Directory Enumerated

Linux Analysis Report
Nyx4r.arm.elf