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Linux Analysis Report
xd.arm5.elf

Overview

General Information

Sample name:	xd.arm5.elf
Analysis ID:	1675171
MD5:	9f9dbd2740b97612ccd361a4489f59ed
SHA1:	a8c522bf2988b5e5519505fe5b03b0995ba3261a
SHA256:	783a682adce49f47e8ccdfef73d09e71c42ecd0072dfffb47ff88171ec48e3cf
Tags:	elfupx-decuser-abuse_ch
Infos:

Detection

Score:	64
Range:	0 - 100

Signatures

Antivirus / Scanner detection for submitted sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Detected TCP or UDP traffic on non-standard ports

Sample has stripped symbol table

Sample listens on a socket

Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)

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

Yara signature match

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1675171
Start date and time:	2025-04-26 23:01:33 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 37s
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:	xd.arm5.elf
Detection:	MAL
Classification:	mal64.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/xd.arm5.elf
PID:	6253
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:	connecterror
Standard Error:

Process Tree

system is lnxubuntu20

xd.arm5.elf (PID: 6253, Parent: 6177, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/xd.arm5.elf

xd.arm5.elf New Fork (PID: 6255, Parent: 6253)

cleanup

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
xd.arm5.elf	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0xac94:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xaca8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xacbc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xacd0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xace4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xacf8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad0c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad20:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad34:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad48:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad5c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad70:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad84:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad98:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xadac:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xadc0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xadd4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xade8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xadfc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xae10:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xae24:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F

Memory Dumps

Source	Rule	Description	Author	Strings
6253.1.00007febec017000.00007febec023000.r-x.sdmp	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0xac94:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xaca8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xacbc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xacd0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xace4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xacf8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad0c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad20:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad34:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad48:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad5c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad70:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad84:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xad98:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xadac:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xadc0:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xadd4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xade8:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xadfc:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xae10:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xae24:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
6253.1.00007febec02a000.00007febec02b000.rw-.sdmp	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0x4:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x18:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x2c:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x40:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x54:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0x68:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F
Process Memory Space: xd.arm5.elf PID: 6253	Linux_Trojan_Gafgyt_28a2fe0c	unknown	unknown	0xe5f6:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe60a:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe61e:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe632:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe646:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe65a:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe66e:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe682:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe696:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe6aa:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe6be:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe6d2:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe6e6:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe6fa:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe70e:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe722:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe736:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe74a:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe75e:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe772:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F 0xe786:$a: 2F 78 33 38 2F 78 46 4A 2F 78 39 33 2F 78 49 44 2F 78 39 41 2F 78 33 38 2F 78 46 4A 2F

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Malware Analysis System Evasion

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus / Scanner detection for submitted sample

Source: xd.arm5.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: xd.arm5.elf	Virustotal: Detection: 57%			Perma Link
Source: xd.arm5.elf	ReversingLabs: Detection: 58%

Source: global traffic

TCP traffic: 192.168.2.23:41594 -> 213.209.129.89:5538

Source: /tmp/xd.arm5.elf (PID: 6253)

Socket: 127.0.0.1:9473

Jump to behavior

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

Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89
Source: unknown	TCP traffic detected without corresponding DNS query: 213.209.129.89

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

System Summary

Malicious sample detected (through community Yara rule)

Source: xd.arm5.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6253.1.00007febec017000.00007febec023000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6253.1.00007febec02a000.00007febec02b000.rw-.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: xd.arm5.elf PID: 6253, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown

Source: ELF static info symbol of initial sample

.symtab present: no

Source: xd.arm5.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: 6253.1.00007febec017000.00007febec023000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: 6253.1.00007febec02a000.00007febec02b000.rw-.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: Process Memory Space: xd.arm5.elf PID: 6253, type: MEMORYSTR	Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16

Source: classification engine

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

Source: /tmp/xd.arm5.elf (PID: 6253)

Queries kernel information via 'uname':

Jump to behavior

Source: xd.arm5.elf, 6253.1.000055ebccf09000.000055ebcd037000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: xd.arm5.elf, 6253.1.00007ffd4337b000.00007ffd4339c000.rw-.sdmp	Binary or memory string: 8x86_64/usr/bin/qemu-arm/tmp/xd.arm5.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/xd.arm5.elf
Source: xd.arm5.elf, 6253.1.000055ebccf09000.000055ebcd037000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: xd.arm5.elf, 6253.1.00007ffd4337b000.00007ffd4339c000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm

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	Direct Volume Access	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	1 Encrypted Channel	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Rootkit	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	1 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 Application Layer Protocol	Automated Exfiltration	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
xd.arm5.elf	57%	Virustotal		Browse
xd.arm5.elf	58%	ReversingLabs	Linux.Worm.Mirai
xd.arm5.elf	100%	Avira	EXP/ELF.Mirai.Z.D

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

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
109.202.202.202	unknown	Switzerland	13030	INIT7CH	false
213.209.129.89	unknown	Germany	42821	RAPIDNET-DEHaunstetterStr19DE	false
91.189.91.43	unknown	United Kingdom	41231	CANONICAL-ASGB	false
91.189.91.42	unknown	United Kingdom	41231	CANONICAL-ASGB	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
109.202.202.202	kpLwzBouH4.elf	Get hash	malicious	Unknown	Browse	ch.archive.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_92.0%2bbuild3-0ubuntu0.20.04.1_amd64.deb
213.209.129.89	xd.arm5.elf	Get hash	malicious	Unknown	Browse
	xd.i686.elf	Get hash	malicious	Unknown	Browse
	xd.arm7.elf	Get hash	malicious	Unknown	Browse
	xd.x86.elf	Get hash	malicious	Unknown	Browse
	xd.mpsl.elf	Get hash	malicious	Unknown	Browse
	xd.mpsl.elf	Get hash	malicious	Unknown	Browse
	xd.spc.elf	Get hash	malicious	Unknown	Browse
	xd.arm.elf	Get hash	malicious	Unknown	Browse
	xd.mips.elf	Get hash	malicious	Unknown	Browse
	xd.arm.elf	Get hash	malicious	Unknown	Browse
91.189.91.43	xd.arm7.elf	Get hash	malicious	Unknown	Browse
	Aqua.sh4.elf	Get hash	malicious	Unknown	Browse
	nut.elf	Get hash	malicious	Unknown	Browse
	pftp.elf	Get hash	malicious	Gafgyt	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	boatnet.arm6.elf	Get hash	malicious	Mirai	Browse
	boatnet.sh4.elf	Get hash	malicious	Mirai	Browse
	boatnet.mips.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm6.elf	Get hash	malicious	Mirai	Browse
91.189.91.42	xd.i686.elf	Get hash	malicious	Unknown	Browse
	xd.arm7.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	Aqua.sh4.elf	Get hash	malicious	Unknown	Browse
	Aqua.arm7.elf	Get hash	malicious	Mirai	Browse
	xd.x86.elf	Get hash	malicious	Unknown	Browse
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse
	nut.elf	Get hash	malicious	Unknown	Browse
	pftp.elf	Get hash	malicious	Gafgyt	Browse
	na.elf	Get hash	malicious	Prometei	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	xd.i686.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	xd.arm7.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	Aqua.sh4.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	Aqua.arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	xd.x86.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	sshd.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	nut.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	apache2.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
CANONICAL-ASGB	xd.i686.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	xd.arm7.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	Aqua.sh4.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	Aqua.arm7.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	xd.x86.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	sshd.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	nut.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	apache2.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
RAPIDNET-DEHaunstetterStr19DE	xd.arm5.elf	Get hash	malicious	Unknown	Browse	213.209.129.89
	xd.i686.elf	Get hash	malicious	Unknown	Browse	213.209.129.89
	xd.arm7.elf	Get hash	malicious	Unknown	Browse	213.209.129.89
	xd.x86.elf	Get hash	malicious	Unknown	Browse	213.209.129.89
	xd.mpsl.elf	Get hash	malicious	Unknown	Browse	213.209.129.89
	xd.mpsl.elf	Get hash	malicious	Unknown	Browse	213.209.129.89
	xd.spc.elf	Get hash	malicious	Unknown	Browse	213.209.129.89
	xd.arm.elf	Get hash	malicious	Unknown	Browse	213.209.129.89
	xd.mips.elf	Get hash	malicious	Unknown	Browse	213.209.129.89
	xd.arm.elf	Get hash	malicious	Unknown	Browse	213.209.129.89
INIT7CH	xd.i686.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	xd.arm7.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	Aqua.sh4.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	Aqua.arm7.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	xd.x86.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	nut.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	pftp.elf	Get hash	malicious	Gafgyt	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202

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, version 1 (ARM), statically linked, stripped
Entropy (8bit):	6.0397218537766895
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	xd.arm5.elf
File size:	48'912 bytes
MD5:	9f9dbd2740b97612ccd361a4489f59ed
SHA1:	a8c522bf2988b5e5519505fe5b03b0995ba3261a
SHA256:	783a682adce49f47e8ccdfef73d09e71c42ecd0072dfffb47ff88171ec48e3cf
SHA512:	a53748e1c34b4cb067470c985f21a4e9b45e151571a28babbda556f30d0ef1b31ab9a2b8be84ec70a876e6b97f227afd2781f7d08e02ec429d148de1f1b0adba
SSDEEP:	768:vD39kxUIyiGdYJi3/BA/Tbv/68W9DFwqC/VyujS13bi2jpsGI1w:T9kkiU0vSRFwqCdy6SxF
TLSH:	57231952B8828617C5D4137BF6AD468D3B2063E9E2CF72179E226F113AC691F0C77E84
File Content Preview:	.ELF...a..........(.........4...........4. ...(.....................................................8....D..........Q.td..................................-...L."....*..........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:	0x2
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	48512
Section Header Size:	40
Number of Section Headers:	10
Header String Table Index:	9

Sections

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	0xabd0	0x0	0x6	AX	16
.fini	PROGBITS	0x12c80	0xac80	0x14	0x0	0x6	AX	4
.rodata	PROGBITS	0x12c94	0xac94	0xe70	0x0	0x2	A	4
.ctors	PROGBITS	0x1bb08	0xbb08	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x1bb10	0xbb10	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x1bb1c	0xbb1c	0x224	0x0	0x3	WA	4
.bss	NOBITS	0x1bd40	0xbd40	0x427c	0x0	0x3	WA	4
.shstrtab	STRTAB	0x0	0xbd40	0x3e	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	0xbb04	0xbb04	6.0694	0x5	R E	0x8000	.init .text .fini .rodata
LOAD	0xbb08	0x1bb08	0x1bb08	0x238	0x44b4	2.9996	0x6	RW	0x8000	.ctors .dtors .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: 28
• 5538 undefined
• 443 (HTTPS)
• 80 (HTTP)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 26, 2025 23:02:19.816262007 CEST	41594	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:02:20.134470940 CEST	5538	41594	213.209.129.89	192.168.2.23
Apr 26, 2025 23:02:22.687207937 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 26, 2025 23:02:28.318335056 CEST	42836	443	192.168.2.23	91.189.91.43
Apr 26, 2025 23:02:29.854125977 CEST	42516	80	192.168.2.23	109.202.202.202
Apr 26, 2025 23:02:30.135242939 CEST	41596	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:02:30.451297998 CEST	5538	41596	213.209.129.89	192.168.2.23
Apr 26, 2025 23:02:32.452634096 CEST	41598	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:02:32.771378994 CEST	5538	41598	213.209.129.89	192.168.2.23
Apr 26, 2025 23:02:37.772559881 CEST	41600	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:02:38.091106892 CEST	5538	41600	213.209.129.89	192.168.2.23
Apr 26, 2025 23:02:42.652448893 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 26, 2025 23:02:43.092519045 CEST	41602	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:02:43.408827066 CEST	5538	41602	213.209.129.89	192.168.2.23
Apr 26, 2025 23:02:49.410337925 CEST	41604	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:02:49.728162050 CEST	5538	41604	213.209.129.89	192.168.2.23
Apr 26, 2025 23:02:51.729995966 CEST	41606	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:02:52.048897982 CEST	5538	41606	213.209.129.89	192.168.2.23
Apr 26, 2025 23:02:54.938679934 CEST	42836	443	192.168.2.23	91.189.91.43
Apr 26, 2025 23:02:57.050199032 CEST	41608	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:02:57.368421078 CEST	5538	41608	213.209.129.89	192.168.2.23
Apr 26, 2025 23:03:01.081861973 CEST	42516	80	192.168.2.23	109.202.202.202
Apr 26, 2025 23:03:07.369302988 CEST	41610	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:03:07.687091112 CEST	5538	41610	213.209.129.89	192.168.2.23
Apr 26, 2025 23:03:16.687777042 CEST	41612	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:03:17.009321928 CEST	5538	41612	213.209.129.89	192.168.2.23
Apr 26, 2025 23:03:18.010582924 CEST	41614	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:03:18.328619003 CEST	5538	41614	213.209.129.89	192.168.2.23
Apr 26, 2025 23:03:21.329761028 CEST	41616	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:03:21.647838116 CEST	5538	41616	213.209.129.89	192.168.2.23
Apr 26, 2025 23:03:22.650346994 CEST	41618	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:03:22.968173027 CEST	5538	41618	213.209.129.89	192.168.2.23
Apr 26, 2025 23:03:23.606920958 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 26, 2025 23:03:30.969280958 CEST	41620	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:03:31.287724972 CEST	5538	41620	213.209.129.89	192.168.2.23
Apr 26, 2025 23:03:41.288091898 CEST	41622	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:03:41.604330063 CEST	5538	41622	213.209.129.89	192.168.2.23
Apr 26, 2025 23:03:42.606285095 CEST	41624	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:03:42.925230026 CEST	5538	41624	213.209.129.89	192.168.2.23
Apr 26, 2025 23:03:51.925573111 CEST	41626	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:03:52.243185997 CEST	5538	41626	213.209.129.89	192.168.2.23
Apr 26, 2025 23:03:59.244488955 CEST	41628	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:03:59.560928106 CEST	5538	41628	213.209.129.89	192.168.2.23
Apr 26, 2025 23:04:04.562242985 CEST	41630	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:04:04.880490065 CEST	5538	41630	213.209.129.89	192.168.2.23
Apr 26, 2025 23:04:10.881524086 CEST	41632	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:04:11.197427034 CEST	5538	41632	213.209.129.89	192.168.2.23
Apr 26, 2025 23:04:21.197902918 CEST	41634	5538	192.168.2.23	213.209.129.89
Apr 26, 2025 23:04:21.516124964 CEST	5538	41634	213.209.129.89	192.168.2.23

System Behavior

Analysis Process: xd.arm5.elf PID: 6253, Parent PID: 6177

General

Start time (UTC):	21:02:18
Start date (UTC):	26/04/2025
Path:	/tmp/xd.arm5.elf
Arguments:	/tmp/xd.arm5.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

File Activities

File Opened

File Read

Process Activities

Process Forked

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Listening

Socket Connecting

Chronological Activities

Analysis Process: xd.arm5.elf PID: 6255, Parent PID: 6253

General

Start time (UTC):	21:02:18
Start date (UTC):	26/04/2025
Path:	/tmp/xd.arm5.elf
Arguments:	-
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:	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 communicate using OSI application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report xd.arm5.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

Initial Sample

Memory Dumps

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Malware Analysis System Evasion

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

World Map of Contacted IPs

Public IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: xd.arm5.elf PID: 6253, Parent PID: 6177

General

File Activities

File Opened

File Read

Process Activities

Process Forked

Prctl Requested

Thread Sleep

System Activities

Query System Information (uname)

Network Activities

Socket Listening

Socket Connecting

Chronological Activities

Analysis Process: xd.arm5.elf PID: 6255, Parent PID: 6253

General

Process Activities

Thread Sleep

Network Activities

Socket Connecting

Chronological Activities

Linux Analysis Report
xd.arm5.elf