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Linux Analysis Report mirai.arm7

Overview

General Information

Sample Name:	mirai.arm7
Analysis ID:	475747
MD5:	dfdb80157f894e6237903899333f4ea9
SHA1:	87de1cd84fab28404735503e005f2dfd23d5bc3d
SHA256:	7cc57bcffd201a2b49876d063765828a09f05dd9bd9c7d03bdd23c807706f863
Infos:

Detection

Mirai

Score:	80
Range:	0 - 100
Whitelisted:	false

Signatures

Malicious sample detected (through community Yara rule)

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

Yara detected Mirai

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

Yara signature match

Sample has stripped symbol table

Classification

Analysis Advice

Static ELF header machine description suggests that the sample might only run correctly on MIPS or ARM architectures

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

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

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

General Information

Joe Sandbox Version:	33.0.0 White Diamond
Analysis ID:	475747
Start date:	01.09.2021
Start time:	14:54:19
Joe Sandbox Product:	CloudBasic
Overall analysis duration:	0h 4m 34s
Hypervisor based Inspection enabled:	false
Report type:	full
Sample file name:	mirai.arm7
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
Detection:	MAL
Classification:	mal80.troj.linARM7@0/0@0/0

Process Tree

system is lnxubuntu20

mirai.arm7 (PID: 3502, Parent: 3391, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/mirai.arm7

cleanup

Yara Overview

Initial Sample

Source	Rule	Description	Author	Strings
mirai.arm7	SUSP_XORed_Mozilla	Detects suspicious XORed keyword - Mozilla/5.0	Florian Roth	0x10aec:$xo1: oMXKNNC\x0D\x17\x0C\x12 0x10b5c:$xo1: oMXKNNC\x0D\x17\x0C\x12 0x10bcc:$xo1: oMXKNNC\x0D\x17\x0C\x12 0x10c3c:$xo1: oMXKNNC\x0D\x17\x0C\x12 0x10cac:$xo1: oMXKNNC\x0D\x17\x0C\x12
mirai.arm7	Mirai_Botnet_Malware	Detects Mirai Botnet Malware	Florian Roth	0x104cc:$x1: POST /cdn-cgi/ 0x10570:$x2: /dev/misc/watchdog 0x10560:$x3: /dev/watchdog 0x1096c:$s1: LCOGQGPTGP 0x106e0:$s3: CFOKLKQVPCVMP 0x106c4:$s4: QWRGPTKQMP 0x10624:$s5: HWCLVGAJ 0x107f0:$s6: NKQVGLKLE
mirai.arm7	MAL_ELF_LNX_Mirai_Oct10_2	Detects ELF malware Mirai related	Florian Roth	0x104cc:$c01: 50 4F 53 54 20 2F 63 64 6E 2D 63 67 69 2F 00 00 20 48 54 54 50 2F 31 2E 31 0D 0A 55 73 65 72 2D ...
mirai.arm7	JoeSecurity_Mirai_5	Yara detected Mirai	Joe Security
mirai.arm7	JoeSecurity_Mirai_9	Yara detected Mirai	Joe Security

Jbx Signature Overview

Click to jump to signature section

Show All Signature Results

AV Detection:

Antivirus / Scanner detection for submitted sample

Show sources

Source: mirai.arm7

Avira: detected

Multi AV Scanner detection for submitted file

Show sources

Source: mirai.arm7

Virustotal: Detection: 56%

Perma Link

System Summary:

Malicious sample detected (through community Yara rule)

Show sources

Source: mirai.arm7, type: SAMPLE	Matched rule: Detects Mirai Botnet Malware Author: Florian Roth
Source: mirai.arm7, type: SAMPLE	Matched rule: Detects ELF malware Mirai related Author: Florian Roth

Source: mirai.arm7, type: SAMPLE	Matched rule: SUSP_XORed_Mozilla date = 2019-10-28, author = Florian Roth, description = Detects suspicious XORed keyword - Mozilla/5.0, reference = Internal Research, score =
Source: mirai.arm7, type: SAMPLE	Matched rule: Mirai_Botnet_Malware date = 2016-10-04, hash5 = 420bf9215dfb04e5008c5e522eee9946599e2b323b17f17919cd802ebb012175, hash4 = 2efa09c124f277be2199bee58f49fc0ce6c64c0bef30079dfb3d94a6de492a69, hash3 = 20683ff7a5fec1237fc09224af40be029b9548c62c693844624089af568c89d4, hash2 = 05c78c3052b390435e53a87e3d31e9fb17f7c76bb4df2814313bca24735ce81c, hash1 = 05c78c3052b390435e53a87e3d31e9fb17f7c76bb4df2814313bca24735ce81c, author = Florian Roth, description = Detects Mirai Botnet Malware, hash10 = c61bf95146c68bfbbe01d7695337ed0e93ea759f59f651799f07eecdb339f83f, hash11 = d9573c3850e2ae35f371dff977fc3e5282a5e67db8e3274fd7818e8273fd5c89, hash12 = f1100c84abff05e0501e77781160d9815628e7fd2de9e53f5454dbcac7c84ca5, hash9 = bf0471b37dba7939524a30d7d5afc8fcfb8d4a7c9954343196737e72ea4e2dc4, hash8 = 89570ae59462e6472b6769545a999bde8457e47ae0d385caaa3499ab735b8147, hash7 = 70bb0ec35dd9afcfd52ec4e1d920e7045dc51dca0573cd4c753987c9d79405c0, hash6 = 62cdc8b7fffbaf5683a466f6503c03e68a15413a90f6afd5a13ba027631460c6, reference = Internal Research, license = Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE, hash13 = fb713ccf839362bf0fbe01aedd6796f4d74521b133011b408e42c1fd9ab8246b
Source: mirai.arm7, type: SAMPLE	Matched rule: MAL_ELF_LNX_Mirai_Oct10_2 date = 2018-10-27, hash1 = fa0018e75f503f9748a5de0d14d4358db234f65e28c31c8d5878cc58807081c9, author = Florian Roth, description = Detects ELF malware Mirai related, reference = Internal Research

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal80.troj.linARM7@0/0@0/0

Source: /tmp/mirai.arm7 (PID: 3502)

Queries kernel information via 'uname':

Jump to behavior

Stealing of Sensitive Information:

Yara detected Mirai

Show sources

Source: Yara match

File source: mirai.arm7, type: SAMPLE

Remote Access Functionality:

Yara detected Mirai

Show sources

Source: Yara match

File source: mirai.arm7, type: SAMPLE

Mitre Att&ck Matrix

Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Exfiltration	Command and Control	Network Effects	Remote Service Effects	Impact
Valid Accounts	Windows Management Instrumentation	Path Interception	Path Interception	Direct Volume Access	OS Credential Dumping	Security Software Discovery1	Remote Services	Data from Local System	Exfiltration Over Other Network Medium	Data Obfuscation	Eavesdrop on Insecure Network Communication	Remotely Track Device Without Authorization	Modify System Partition

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
mirai.arm7	57%	Virustotal		Browse
mirai.arm7	100%	Avira	LINUX/Mirai.bonb

Dropped Files

No Antivirus matches

Domains

No Antivirus matches

URLs

No Antivirus matches

Domains and IPs

Contacted Domains

No contacted domains info

Contacted IPs

No contacted IP infos

Runtime Messages

Command:	/tmp/mirai.arm7
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

Joe Sandbox View / Context

IPs

No context

Domains

No context

ASN

No context

JA3 Fingerprints

No context

Dropped Files

No context

Created / dropped Files

No created / dropped files found

Static File Info

General
File type:	ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.069656272120174
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	mirai.arm7
File size:	70952
MD5:	dfdb80157f894e6237903899333f4ea9
SHA1:	87de1cd84fab28404735503e005f2dfd23d5bc3d
SHA256:	7cc57bcffd201a2b49876d063765828a09f05dd9bd9c7d03bdd23c807706f863
SHA512:	12a99bb8eeaae95357e61f2704023a9b584080abf22015b4222d5b8fe2dd46735753fda1cc946b7d889a43be006ead7c65bb3ab640e294e93c38b26644eeb16a
SSDEEP:	1536:+xngPBbNz9PLzyKSM90ViHAiczK7F+lVZ3ENBD/qrJhrsL4IviCci/ZWK:hbhpXyK36ihczKSV5ENBD/iJwci/ZWK
File Content Preview:	.ELF..............(.....T...4...H.......4. ...(.....................................................0...D...........Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../...............-.@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:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x8154
Flags:	0x4000002
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	70472
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	0x8094	0x94	0x10	0x0	0x6	AX	4
.text	PROGBITS	0x80b0	0xb0	0x1040c	0x0	0x6	AX	16
.fini	PROGBITS	0x184bc	0x104bc	0x10	0x0	0x6	AX	4
.rodata	PROGBITS	0x184cc	0x104cc	0xbd8	0x0	0x2	A	4
.init_array	INIT_ARRAY	0x210a8	0x110ac	0x4	0x0	0x3	WA	4
.fini_array	FINI_ARRAY	0x210ac	0x110b0	0x4	0x0	0x3	WA	4
.got	PROGBITS	0x210b4	0x110b8	0x74	0x4	0x3	WA	4
.data	PROGBITS	0x21128	0x1112c	0x1ac	0x0	0x3	WA	4
.bss	NOBITS	0x212d4	0x112d8	0x2618	0x0	0x3	WA	4
.ARM.attributes	ARM_ATTRIBUTES	0x0	0x112d8	0x10	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x112e8	0x5d	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x8000	0x8000	0x110a4	0x110a4	3.2504	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0x110a8	0x210a8	0x210a4	0x230	0xa844	1.7450	0x6	RW	0x8000	.init_array .fini_array .got .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

No network behavior found

System Behavior

Analysis Process: mirai.arm7 PID: 3502 Parent PID: 3391

General

Start time:	14:55:05
Start date:	01/09/2021
Path:	/tmp/mirai.arm7
Arguments:	/tmp/mirai.arm7
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

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:	AWS CloudTrail logs, Azure activity logs, File monitoring, Process command-line parameters, Process monitoring, Stackdriver logs
Platforms:	AWS, Azure, Azure AD, GCP, Linux, macOS, Office 365, SaaS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Warning!

Linux Analysis Report mirai.arm7

Overview

General Information

Detection

Signatures

Classification

Analysis Advice

General Information

Process Tree

Yara Overview

Initial Sample

Jbx Signature Overview

AV Detection:

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

Contacted IPs

Runtime Messages

Joe Sandbox View / Context

IPs

Domains

ASN

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

System Behavior

Analysis Process: mirai.arm7 PID: 3502 Parent PID: 3391

General

File Activities

File Opened

File Read

Process Activities

Signal sent

System Activities

Query System Information (uname)

Chronological Activities