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Linux Analysis Report
arm.nn.elf

Overview

General Information

Sample name:	arm.nn.elf
Analysis ID:	1522871
MD5:	f89b296713d8e794e07147262967410d
SHA1:	faf84941b55ab9a9a24f81da43b3daca7ddc261e
SHA256:	ca663b76e00341b7346a238c8c8815f25b8f0004526dd00a97f3a93a704e6590
Tags:	elfGorillaGorillaBotnetMiraiuser-abuse_ch
Infos:

Detection

Okiru

Score:	56
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

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

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

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1522871
Start date and time:	2024-09-30 19:26:05 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 16s
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:	arm.nn.elf
Detection:	MAL
Classification:	mal56.troj.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/arm.nn.elf
PID:	5483
Exit Code:	255
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:	/tmp/arm.nn.elf: Invalid ELF image for this architecture

Process Tree

system is lnxubuntu20

arm.nn.elf (PID: 5483, Parent: 5409, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm.nn.elf

cleanup

Yara Signatures

Initial Sample

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

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: arm.nn.elf

ReversingLabs: Detection: 36%

Source: arm.nn.elf

String: Found And Killed Process: PID=%d, Realpath=%s7815351681972surf2/proc/self/exe/proc/%s/exe/.(deleted)/fd/socket/tmp/usr/lib/systemd/*/usr/sbin/*/usr/sbin/agetty/usr/sbin/cron/usr/lib/policykit-1/polkitd/snap/snapd/15534/usr/lib/snapd/snapd/usr/bin/dbus-daemon/usr/lib/openssh/sftp-server-sshd**deamon*/usr/libexec/openssh/sftp-server/opt/app/monitor/z/secom//usr/lib/usr/mnt/sys/bin/boot/media/srv/sbin/lib/etc/dev/telnetbashhttpdtelnetddropbearropbearencodersystem/var/tmp/wlancontwlancontarm.nnarm5.nnarm6.nnm68k.nnmips.nnmipsel.nnpowerpc.nnsparc.nnx86_32.nnx86_64.nn/initvar/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/systemdshellvar/run/home/Davincisshwatchdog/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr//root/dvr_gui//root/dvr_app//anko-app//opt/wgetcurlping/pswiresharktcpdumpnetstatpythonbusyboxiptablesnanonvimvimgdbpkillkillallapt487154914:1553<41<515791446<614561;814994;8153;148;14<5which gdb > /dev/null 2>&1Debugger (gdb) detected. Exiting. gorilla botnet didnt like this honeypot....which lldb > /dev/null 2>&1Debugger (lldb) detected. Exiting. gorilla botnet didnt like this honeypot....which dtrace > /dev/null 2>&1Debugger (dtrace) detected. Exiting. gorilla botnet didnt like this honeypot....which truss > /dev/null 2>&1Debugger (truss) detected. Exiting. gorilla botnet didnt like this honeypot....which ptrace > /dev/null 2>&1Debugger (ptrace) detected. Exiting. gorilla botnet didnt like this honeypot....LD_PRELOADSandbox detected (LD_PRELOAD). Exiting. gorilla botnet didnt like this honeypot....LD_LIBRARY_PATHSandbox detected (LD_LIBRARY_PATH). Exiting. gorilla botnet didnt like this honeypot....LD_AUDITSandbox detected (LD_AUDIT). Exiting. gorilla botnet didnt like this honeypot..../proc/proc filesystem not found. Exiting. gorilla botnet didnt like this honeypot..../etc/motdw%s

Source: Initial sample	String containing 'busybox' found: /bin/busybox
Source: Initial sample	String containing 'busybox' found: busybox
Source: Initial sample	String containing 'busybox' found: Found And Killed Process: PID=%d, Realpath=%s7815351681972surf2/proc/self/exe/proc/%s/exe/.(deleted)/fd/socket/tmp/usr/lib/systemd//usr/sbin//usr/sbin/agetty/usr/sbin/cron/usr/lib/policykit-1/polkitd/snap/snapd/15534/usr/lib/snapd/snapd/usr/bin/dbus-daemon/usr/lib/openssh/sftp-server-sshd*deamon/usr/libexec/openssh/sftp-server/opt/app/monitor/z/secom//usr/lib/usr/mnt/sys/bin/boot/media/srv/sbin/lib/etc/dev/telnetbashhttpdtelnetddropbearropbearencodersystem/var/tmp/wlancontwlancontarm.nnarm5.nnarm6.nnm68k.nnmips.nnmipsel.nnpowerpc.nnsparc.nnx86_32.nnx86_64.nn/initvar/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/systemdshellvar/run/home/Davincisshwatchdog/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr//root/dvr_gui//root/dvr_app//anko-app//opt/wgetcurlping/pswiresharktcpdumpnetstatpythonbusyboxiptablesnanonvimvimgdbpkillkillallapt487154914:1553<41<5157914

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal56.troj.linELF@0/0@0/0

Source: /tmp/arm.nn.elf (PID: 5483)

Queries kernel information via 'uname':

Jump to behavior

Source: arm.nn.elf, 5483.1.000055b7fac40000.000055b7fad4c000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: arm.nn.elf, 5483.1.00007ffd9420c000.00007ffd9422d000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/arm.nn.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/arm.nn.elf
Source: arm.nn.elf, 5483.1.00007ffd9420c000.00007ffd9422d000.rw-.sdmp	Binary or memory string: qemu: %s: %s
Source: arm.nn.elf, 5483.1.00007ffd9420c000.00007ffd9422d000.rw-.sdmp	Binary or memory string: leqemu: %s: %s
Source: arm.nn.elf, 5483.1.000055b7fac40000.000055b7fad4c000.rw-.sdmp	Binary or memory string: Urg.qemu.gdb.arm.sys.regs">
Source: arm.nn.elf, 5483.1.000055b7fac40000.000055b7fad4c000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: arm.nn.elf, 5483.1.00007ffd9420c000.00007ffd9422d000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: arm.nn.elf, 5483.1.000055b7fac40000.000055b7fad4c000.rw-.sdmp	Binary or memory string: rg.qemu.gdb.arm.sys.regs">

Stealing of Sensitive Information

Yara detected Okiru

Source: Yara match

File source: arm.nn.elf, type: SAMPLE

Remote Access Functionality

Yara detected Okiru

Source: Yara match

File source: arm.nn.elf, type: SAMPLE

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	Data Obfuscation	Exfiltration Over Other Network Medium	Abuse Accessibility Features

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
arm.nn.elf	37%	ReversingLabs	Linux.Backdoor.Mirai

File type:	ELF 32-bit LSB executable, ARM, version 1 (ARM), no program header, corrupted section header size
Entropy (8bit):	6.101669975017757
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	arm.nn.elf
File size:	83'564 bytes
MD5:	f89b296713d8e794e07147262967410d
SHA1:	faf84941b55ab9a9a24f81da43b3daca7ddc261e
SHA256:	ca663b76e00341b7346a238c8c8815f25b8f0004526dd00a97f3a93a704e6590
SHA512:	c0ab62ac35d3a2fc48b720c440d98a6334c24a298d92bac3e5c196ad9741aa09cdb8fdf08287826383470fb572ee0b9774c05d40c9a8faf3150854e4f6abb4ca
SSDEEP:	1536:KZTFjULrpzCB9ZM6Xi+yHFmiT2OuqvT9pj9mvNa+ToN:KZTFRZty+yHFf/BpiN9ToN
TLSH:	76833A51B9819A23C6D022BBF76E028D371613E8E2EE3217DD21AF2137C696F0D77645
File Content Preview:	.ELF...a..........(.........4....D..................................0<..0<...............@...@...@.......%..........Q.td..................................-...L."....C..........0@-.\P...0....S.0...P@...0... ....R......0...0...........0... ....R..... 0....S

Static ELF Info

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:	0
Program Header Offset:	52
Program Header Size:	0
Number of Program Headers:	0
Section Header Offset:	83164
Section Header Size:	0
Number of Section Headers:	10
Header String Table Index:	9

Sections

Name	Type	Address	Offset	Size	EntSize	Flags
ELFa	NULL	0x0	0x0	0x0	0x0	0x0
ELFa	NULL	0x0	0x0	0x0	0x0	0x0
ELFa	NULL	0x0	0x0	0x0	0x0	0x0
ELFa	NULL	0x0	0x0	0x0	0x0	0x0
ELFa	NULL	0x0	0x0	0x0	0x0	0x0
ELFa	NULL	0x0	0x0	0x0	0x0	0x0
ELFa	NULL	0x0	0x0	0x0	0x0	0x0
ELFa	NULL	0x0	0x0	0x0	0x0	0x0
ELFa	NULL	0x0	0x0	0x0	0x0	0x0
ELFa	NULL	0x0	0x0	0x0	0x0	0x0

Network Behavior

⊘No network behavior found

System Behavior

Analysis Process: arm.nn.elf PID: 5483, Parent PID: 5409

General

Start time (UTC):	17:26:50
Start date (UTC):	30/09/2024
Path:	/tmp/arm.nn.elf
Arguments:	/tmp/arm.nn.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

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

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Linux Analysis Report arm.nn.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

Runtime Messages

Process Tree

Yara Signatures

Initial Sample

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Spreading

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

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

Static ELF Info

ELF header

Sections

Network Behavior

System Behavior

Analysis Process: arm.nn.elf PID: 5483, Parent PID: 5409

General

Chronological Activities

Linux Analysis Report
arm.nn.elf