Edit tour

Linux Analysis Report
efea6.elf

Overview

General Information

Sample name:	efea6.elf
Analysis ID:	1654433
MD5:	09545845744e99b17f132d879cdad27a
SHA1:	95379864179db5a9bbf3c1801258c404895351cd
SHA256:	0d49952f76ba068b3ff00a848edd1ef0580c52dab241359d79b2dcab517d3b34
Tags:	elfMiraiuser-abuse_ch
Infos:

Detection

Score:	48
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

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

Found strings indicative of a multi-platform dropper

Sample has stripped symbol table

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1654433
Start date and time:	2025-04-02 11:18:12 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 26s
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:	efea6.elf
Detection:	MAL
Classification:	mal48.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/efea6.elf
PID:	5481
Exit Code:	139
Exit Code Info:	SIGSEGV (11) Segmentation fault invalid memory reference
Killed:	False
Standard Output:
Standard Error:	qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Process Tree

system is lnxubuntu20

efea6.elf (PID: 5481, Parent: 5405, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/efea6.elf

dash New Fork (PID: 5552, Parent: 3633)

rm (PID: 5552, Parent: 3633, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.8HtBcK8riz /tmp/tmp.INdVsfDvuv /tmp/tmp.VmWAtGbadJ

dash New Fork (PID: 5553, Parent: 3633)

cat (PID: 5553, Parent: 3633, MD5: 7e9d213e404ad3bb82e4ebb2e1f2c1b3) Arguments: cat /tmp/tmp.8HtBcK8riz

dash New Fork (PID: 5554, Parent: 3633)

head (PID: 5554, Parent: 3633, MD5: fd96a67145172477dd57131396fc9608) Arguments: head -n 10

dash New Fork (PID: 5555, Parent: 3633)

tr (PID: 5555, Parent: 3633, MD5: fbd1402dd9f72d8ebfff00ce7c3a7bb5) Arguments: tr -d \\000-\\011\\013\\014\\016-\\037

dash New Fork (PID: 5556, Parent: 3633)

cut (PID: 5556, Parent: 3633, MD5: d8ed0ea8f22c0de0f8692d4d9f1759d3) Arguments: cut -c -80

dash New Fork (PID: 5557, Parent: 3633)

cat (PID: 5557, Parent: 3633, MD5: 7e9d213e404ad3bb82e4ebb2e1f2c1b3) Arguments: cat /tmp/tmp.8HtBcK8riz

dash New Fork (PID: 5558, Parent: 3633)

head (PID: 5558, Parent: 3633, MD5: fd96a67145172477dd57131396fc9608) Arguments: head -n 10

dash New Fork (PID: 5559, Parent: 3633)

tr (PID: 5559, Parent: 3633, MD5: fbd1402dd9f72d8ebfff00ce7c3a7bb5) Arguments: tr -d \\000-\\011\\013\\014\\016-\\037

dash New Fork (PID: 5560, Parent: 3633)

cut (PID: 5560, Parent: 3633, MD5: d8ed0ea8f22c0de0f8692d4d9f1759d3) Arguments: cut -c -80

dash New Fork (PID: 5561, Parent: 3633)

rm (PID: 5561, Parent: 3633, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.8HtBcK8riz /tmp/tmp.INdVsfDvuv /tmp/tmp.VmWAtGbadJ

cleanup

String: /lib/systemd//usr/lib/systemd/system/system/bin//gm/bin//home/process//home/helper/home/davinci/z/bin//usr/libexec//usr/sbin//z/zbin//usr/bin/bin//tmp/var/mnt/root/boot/home/dev/media/opt/../(deleted)x86armarm7mipsmpslsh4wgetcurlkillallpkillaptyumiftopdmesgps auxhtopchkrootkitrkhuntercrontabmpstattopdpkgclamavfreshclampstreelsmodfilelddaideinitfindyarar2iSidat64peidfirejailauditdauditctltripwirezeeksnortaideclamscanaflreadelfizsnapstracelsofgdbltraceptracewiresharktsharktcpdumpnetstatnmaptracerouteradare2ipsstracepathfakenet-nguptimeiostatvmstatjournalctllogwatchcuckooncatchkconfigobjdumpbinwalkghidraimmunitydebuggerollydbgpe-beardisassemblertdsskillergmerthehivemispdxlclientcortexsplunkkalitailsaircrack-ngvolatilityflarevmremnuxpeStudioCFF Explorerx32dbgx64dbgJDbgCutterdierekalltsk_recoverautopsytruecryptdockervirtualboxpythonpython3grepstringsbashsh[watcher] deleted file: %s%s/%s/data/local/tmp/sbin/dev/null/dev/console/var/lib/dockerkworker/u8:0raw.awaken-network.netabcdefghijklmnopqrstuvwxyz/proc/%d/cmdlineopen failedwrite failed/proc/self/cmdlineopen /proc/self/cmdline failedprctl PR_SET_NAME failedhttpd/proc/self/exe/usr/sbin/reboot/usr/bin/reboot/usr/sbin/shutdown/usr/bin/shutdown/usr/sbin/poweroff/usr/bin/poweroff/usr/sbin/halt/usr/bin/halt

Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknown	UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown	UDP traffic detected without corresponding DNS query: 1.1.1.1

Source: global traffic

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: global traffic

DNS traffic detected: DNS query: daisy.ubuntu.com

Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 37910
Source: unknown	Network traffic detected: HTTP traffic on port 37910 -> 443

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal48.linELF@0/0@2/0

Source: /usr/bin/dash (PID: 5552)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.8HtBcK8riz /tmp/tmp.INdVsfDvuv /tmp/tmp.VmWAtGbadJ			Jump to behavior
Source: /usr/bin/dash (PID: 5561)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.8HtBcK8riz /tmp/tmp.INdVsfDvuv /tmp/tmp.VmWAtGbadJ			Jump to behavior

Source: /tmp/efea6.elf (PID: 5481)

Queries kernel information via 'uname':

Jump to behavior

Source: efea6.elf, 5481.1.00007ffd4d782000.00007ffd4d7a3000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/efea6.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/efea6.elf
Source: efea6.elf, 5481.1.000056323d22c000.000056323d35a000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: efea6.elf, 5481.1.00007ffd4d782000.00007ffd4d7a3000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: efea6.elf, 5481.1.000056323d22c000.000056323d35a000.rw-.sdmp	Binary or memory string: 3$=2VP5$=2VP2$=2V!/etc/qemu-binfmt/arm
Source: efea6.elf, 5481.1.00007ffd4d782000.00007ffd4d7a3000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	1 Scripting	Valid Accounts	Windows Management Instrumentation	1 Scripting	Path Interception	1 File Deletion	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 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	2 Non-Application Layer Protocol	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	3 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	1 Ingress Tool Transfer	Traffic Duplication	Data Destruction

Malware Configuration

⊘No configs have been found

Behavior Graph

Hide Legend

Legend:

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

Source	Detection	Scanner	Label	Link
efea6.elf	21%	Virustotal		Browse
efea6.elf	33%	ReversingLabs	Linux.Backdoor.Mirai

Name	IP	Active	Malicious	Antivirus Detection	Reputation
daisy.ubuntu.com	162.213.35.25	true	false		high

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	Flag	ASN	ASN Name	Malicious
54.171.230.55	unknown	United States		16509	AMAZON-02US	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
54.171.230.55	rrrdsl.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	FederalAgent.i486.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	socat	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	killua.arm5.elf	Get hash	malicious	Unknown	Browse
	ub8ehJSePAfc9FYqZIT6.mips.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	xd.powerpc-440fp.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	xd.m68k.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	xd.ppc.elf	Get hash	malicious	Mirai	Browse	162.213.35.25
	xd.i686.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	xd.arm6.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	xd.arc.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	mpsl.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	sh4.elf	Get hash	malicious	Unknown	Browse	162.213.35.24
	s-h.4-.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.24
	x-8.6-.Sakura.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.24

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
AMAZON-02US	xd.powerpc-440fp.elf	Get hash	malicious	Mirai	Browse	44.239.245.251
	xd.m68k.elf	Get hash	malicious	Mirai	Browse	34.243.160.129
	xd.arm5.elf	Get hash	malicious	Mirai	Browse	34.254.182.186
	yuioiuy.txt.ps1	Get hash	malicious	Unknown	Browse	108.139.47.92
	xd.ppc.elf	Get hash	malicious	Mirai	Browse	18.138.41.48
	https://maxenerwellness.com/	Get hash	malicious	Unknown	Browse	13.127.204.192
	cfr4.txt.ps1	Get hash	malicious	Unknown	Browse	108.139.47.33
	xd.i686.elf	Get hash	malicious	Mirai	Browse	13.216.220.162
	xd.sh4.elf	Get hash	malicious	Mirai	Browse	18.148.60.32
	xd.spc.elf	Get hash	malicious	Mirai	Browse	34.217.111.235

File type:	ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.570224094232082
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	efea6.elf
File size:	167'868 bytes
MD5:	09545845744e99b17f132d879cdad27a
SHA1:	95379864179db5a9bbf3c1801258c404895351cd
SHA256:	0d49952f76ba068b3ff00a848edd1ef0580c52dab241359d79b2dcab517d3b34
SHA512:	33a52999a65dff43c210a662c83288e54bda3c7d6cd4f591de3e7cd37946350b9adbe74e46d4492617c646e7c0b1d4267f94ef4b3facfa2a537f8d0d8932abe9
SSDEEP:	3072:44HvgAaLQazXVdlAl2aaFoeizyvaYpaTBOGkx:44HvkL/X/lAMa+TvazTBON
TLSH:	50F30A56B8819F11D5D212BAFE1E128D33131B78E3EE72139D246F24778A86F0E3B516
File Content Preview:	.ELF..............(.....T...4...........4. ...(......................B...B...............B...B...B...J..............Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../.8........B....-.@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:	167348
Section Header Size:	40
Number of Section Headers:	13
Header String Table Index:	12

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	0x20218	0x0	0x6	AX	16
.fini	PROGBITS	0x282c8	0x202c8	0x10	0x0	0x6	AX	4
.rodata	PROGBITS	0x282d8	0x202d8	0x3fd8	0x0	0x2	A	8
.init_array	INIT_ARRAY	0x342b4	0x242b8	0x8	0x0	0x3	WA	4
.fini_array	FINI_ARRAY	0x342bc	0x242c0	0x4	0x0	0x3	WA	4
.data.rel.ro	PROGBITS	0x342c4	0x242c8	0x78	0x0	0x3	WA	4
.got	PROGBITS	0x3433c	0x24340	0x11c	0x4	0x3	WA	4
.data	PROGBITS	0x34460	0x24464	0x48d4	0x0	0x3	WA	32
.bss	NOBITS	0x38d38	0x28d38	0xc900	0x0	0x3	WA	8
.ARM.attributes	ARM_ATTRIBUTES	0x0	0x28d38	0x10	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x28d48	0x6a	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	0x242b0	0x242b0	5.9709	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0x242b4	0x342b4	0x342b0	0x4a84	0x11384	0.7431	0x6	RW	0x8000	.init_array .fini_array .data.rel.ro .got .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 15
• 443 (HTTPS)
• 53 (DNS)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 2, 2025 11:19:21.032768965 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 2, 2025 11:19:21.032861948 CEST	443	37910	54.171.230.55	192.168.2.14
Apr 2, 2025 11:19:21.032965899 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 2, 2025 11:19:21.034204960 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 2, 2025 11:19:21.034233093 CEST	443	37910	54.171.230.55	192.168.2.14
Apr 2, 2025 11:19:30.736701965 CEST	443	37910	54.171.230.55	192.168.2.14
Apr 2, 2025 11:19:30.737135887 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 2, 2025 11:19:30.737653971 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 2, 2025 11:19:30.737680912 CEST	443	37910	54.171.230.55	192.168.2.14
Apr 2, 2025 11:19:30.740767002 CEST	443	37910	54.171.230.55	192.168.2.14
Apr 2, 2025 11:19:30.740879059 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 2, 2025 11:19:30.742791891 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 2, 2025 11:19:30.742872000 CEST	443	37910	54.171.230.55	192.168.2.14
Apr 2, 2025 11:19:30.742950916 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 2, 2025 11:19:30.742966890 CEST	443	37910	54.171.230.55	192.168.2.14
Apr 2, 2025 11:19:30.743029118 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 2, 2025 11:19:30.743058920 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 2, 2025 11:19:30.784271955 CEST	443	37910	54.171.230.55	192.168.2.14
Apr 2, 2025 11:19:32.246849060 CEST	443	37910	54.171.230.55	192.168.2.14
Apr 2, 2025 11:19:32.246962070 CEST	443	37910	54.171.230.55	192.168.2.14
Apr 2, 2025 11:19:32.247057915 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 2, 2025 11:19:32.247466087 CEST	37910	443	192.168.2.14	54.171.230.55
Apr 2, 2025 11:19:32.247488976 CEST	443	37910	54.171.230.55	192.168.2.14
Apr 2, 2025 11:19:32.247526884 CEST	37910	443	192.168.2.14	54.171.230.55

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 2, 2025 11:18:59.011271000 CEST	40676	53	192.168.2.14	1.1.1.1
Apr 2, 2025 11:18:59.011322975 CEST	54432	53	192.168.2.14	1.1.1.1
Apr 2, 2025 11:18:59.108097076 CEST	53	54432	1.1.1.1	192.168.2.14
Apr 2, 2025 11:18:59.110088110 CEST	53	40676	1.1.1.1	192.168.2.14

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Apr 2, 2025 11:18:59.011271000 CEST	192.168.2.14	1.1.1.1	0xbb3d	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Apr 2, 2025 11:18:59.011322975 CEST	192.168.2.14	1.1.1.1	0xff00	Standard query (0)	daisy.ubuntu.com	28	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Apr 2, 2025 11:18:59.110088110 CEST	1.1.1.1	192.168.2.14	0xbb3d	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false
Apr 2, 2025 11:18:59.110088110 CEST	1.1.1.1	192.168.2.14	0xbb3d	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false

HTTP Request Dependency Graph

motd.ubuntu.com

HTTPS Proxied Packets

Session ID	Source IP	Source Port	Destination IP	Destination Port
0	192.168.2.14	37910	54.171.230.55	443

Timestamp	Bytes transferred	Direction	Data
2025-04-02 09:19:30 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
2025-04-02 09:19:32 UTC	271	IN	HTTP/1.1 200 OK Date: Wed, 02 Apr 2025 09:19:32 GMT Server: Apache/2.4.18 (Ubuntu) Last-Modified: Tue, 01 Apr 2025 23:00:38 GMT ETag: "d8-631bf8154209a" Accept-Ranges: bytes Content-Length: 216 Vary: Accept-Encoding Connection: close Content-Type: text/plain
2025-04-02 09:19:32 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

System Behavior

Analysis Process: efea6.elf PID: 5481, Parent PID: 5405

General

Start time (UTC):	09:18:56
Start date (UTC):	02/04/2025
Path:	/tmp/efea6.elf
Arguments:	/tmp/efea6.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.8HtBcK8riz /tmp/tmp.INdVsfDvuv /tmp/tmp.VmWAtGbadJ
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/cat
Arguments:	cat /tmp/tmp.8HtBcK8riz
File size:	43416 bytes
MD5 hash:	7e9d213e404ad3bb82e4ebb2e1f2c1b3

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/head
Arguments:	head -n 10
File size:	47480 bytes
MD5 hash:	fd96a67145172477dd57131396fc9608

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/tr
Arguments:	tr -d \\000-\\011\\013\\014\\016-\\037
File size:	51544 bytes
MD5 hash:	fbd1402dd9f72d8ebfff00ce7c3a7bb5

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/cut
Arguments:	cut -c -80
File size:	47480 bytes
MD5 hash:	d8ed0ea8f22c0de0f8692d4d9f1759d3

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/cat
Arguments:	cat /tmp/tmp.8HtBcK8riz
File size:	43416 bytes
MD5 hash:	7e9d213e404ad3bb82e4ebb2e1f2c1b3

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/head
Arguments:	head -n 10
File size:	47480 bytes
MD5 hash:	fd96a67145172477dd57131396fc9608

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/tr
Arguments:	tr -d \\000-\\011\\013\\014\\016-\\037
File size:	51544 bytes
MD5 hash:	fbd1402dd9f72d8ebfff00ce7c3a7bb5

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/cut
Arguments:	cut -c -80
File size:	47480 bytes
MD5 hash:	d8ed0ea8f22c0de0f8692d4d9f1759d3

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Start time (UTC):	09:19:31
Start date (UTC):	02/04/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.8HtBcK8riz /tmp/tmp.INdVsfDvuv /tmp/tmp.VmWAtGbadJ
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Source: efea6.elf	Virustotal: Detection: 21%			Perma Link
Source: efea6.elf	ReversingLabs: Detection: 33%

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

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

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

Description:	Adversaries may 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 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 efea6.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Spreading

Networking

System Summary

Persistence and Installation Behavior

Malware Analysis System Evasion

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Screenshots

Thumbnails

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

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

UDP Packets

DNS Queries

DNS Answers

HTTP Request Dependency Graph

HTTPS Proxied Packets

System Behavior

Analysis Process: efea6.elf PID: 5481, Parent PID: 5405

General

File Activities

File Opened

File Read

Process Activities

Signal Sent

Thread Sleep

System Activities

Query System Information (uname)

Chronological Activities

Analysis Process: dash PID: 5552, Parent PID: 3633

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 5552, Parent PID: 3633

General

Linux Analysis Report
efea6.elf