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Linux Analysis Report
x86.elf

Overview

General Information

Sample name:	x86.elf
Analysis ID:	1649503
MD5:	1cd5db1748782990c8ae4b906fef45c0
SHA1:	35e72fde35ed4b3a551f1faaa605d2217763f93e
SHA256:	a9ecbd80c1567e1bd92683051fa33b45289e769613bb47923703244835bde5a5
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	56
Range:	0 - 100

Signatures

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

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

Sample has stripped symbol table

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

Yara signature match

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1649503
Start date and time:	2025-03-26 20:53:15 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 34s
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:	x86.elf
Detection:	MAL
Classification:	mal56.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/x86.elf
PID:	6261
Exit Code:	1
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

dash New Fork (PID: 6224, Parent: 4331)

rm (PID: 6224, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.MY9uKuyUPF /tmp/tmp.UJCjuL7U55 /tmp/tmp.SDfZmI8j0h

dash New Fork (PID: 6225, Parent: 4331)

cat (PID: 6225, Parent: 4331, MD5: 7e9d213e404ad3bb82e4ebb2e1f2c1b3) Arguments: cat /tmp/tmp.MY9uKuyUPF

dash New Fork (PID: 6226, Parent: 4331)

head (PID: 6226, Parent: 4331, MD5: fd96a67145172477dd57131396fc9608) Arguments: head -n 10

dash New Fork (PID: 6227, Parent: 4331)

tr (PID: 6227, Parent: 4331, MD5: fbd1402dd9f72d8ebfff00ce7c3a7bb5) Arguments: tr -d \\000-\\011\\013\\014\\016-\\037

dash New Fork (PID: 6228, Parent: 4331)

cut (PID: 6228, Parent: 4331, MD5: d8ed0ea8f22c0de0f8692d4d9f1759d3) Arguments: cut -c -80

dash New Fork (PID: 6229, Parent: 4331)

cat (PID: 6229, Parent: 4331, MD5: 7e9d213e404ad3bb82e4ebb2e1f2c1b3) Arguments: cat /tmp/tmp.MY9uKuyUPF

dash New Fork (PID: 6230, Parent: 4331)

head (PID: 6230, Parent: 4331, MD5: fd96a67145172477dd57131396fc9608) Arguments: head -n 10

dash New Fork (PID: 6231, Parent: 4331)

tr (PID: 6231, Parent: 4331, MD5: fbd1402dd9f72d8ebfff00ce7c3a7bb5) Arguments: tr -d \\000-\\011\\013\\014\\016-\\037

dash New Fork (PID: 6232, Parent: 4331)

cut (PID: 6232, Parent: 4331, MD5: d8ed0ea8f22c0de0f8692d4d9f1759d3) Arguments: cut -c -80

dash New Fork (PID: 6233, Parent: 4331)

rm (PID: 6233, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.MY9uKuyUPF /tmp/tmp.UJCjuL7U55 /tmp/tmp.SDfZmI8j0h

x86.elf (PID: 6261, Parent: 6152, MD5: 1cd5db1748782990c8ae4b906fef45c0) Arguments: /tmp/x86.elf

cleanup

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
x86.elf	Linux_Trojan_Gafgyt_9e9530a7	unknown	unknown	0x689c:$a: F6 48 63 FF B8 36 00 00 00 0F 05 48 3D 00 F0 FF FF 48 89 C3
x86.elf	Linux_Trojan_Gafgyt_807911a2	unknown	unknown	0x7053:$a: FE 48 39 F3 0F 94 C2 48 83 F9 FF 0F 94 C0 84 D0 74 16 4B 8D
x86.elf	Linux_Trojan_Gafgyt_d4227dbf	unknown	unknown	0x5c7a:$a: FF 48 81 EC D0 00 00 00 48 8D 84 24 E0 00 00 00 48 89 54 24 30 C7 04 24 18 00
x86.elf	Linux_Trojan_Gafgyt_620087b9	unknown	unknown	0x6c13:$a: 48 89 D8 48 83 C8 01 EB 04 48 8B 76 10 48 3B 46 08 72 F6 48 8B
x86.elf	Linux_Trojan_Gafgyt_33b4111a	unknown	unknown	0x6ede:$a: C1 83 E1 0F 74 1A B8 10 00 00 00 48 29 C8 48 8D 0C 02 48 89 DA 48
x86.elf	Linux_Trojan_Mirai_6a77af0f	unknown	unknown	0x420f:$a: 31 D1 89 0F 48 83 C7 04 85 F6 7E 3B 44 89 C8 45 89 D1 45 89 C2 41
x86.elf	Linux_Trojan_Mirai_e0cf29e2	unknown	unknown	0x18f2:$a: 83 FE 01 76 12 0F B7 07 83 EE 02 48 83 C7 02 48 01 C2 83 FE 01
Click to see the 2 entries

Memory Dumps

Source	Rule	Description	Author	Strings
6261.1.0000000000400000.000000000040b000.r-x.sdmp	Linux_Trojan_Gafgyt_9e9530a7	unknown	unknown	0x689c:$a: F6 48 63 FF B8 36 00 00 00 0F 05 48 3D 00 F0 FF FF 48 89 C3
6261.1.0000000000400000.000000000040b000.r-x.sdmp	Linux_Trojan_Gafgyt_807911a2	unknown	unknown	0x7053:$a: FE 48 39 F3 0F 94 C2 48 83 F9 FF 0F 94 C0 84 D0 74 16 4B 8D
6261.1.0000000000400000.000000000040b000.r-x.sdmp	Linux_Trojan_Gafgyt_d4227dbf	unknown	unknown	0x5c7a:$a: FF 48 81 EC D0 00 00 00 48 8D 84 24 E0 00 00 00 48 89 54 24 30 C7 04 24 18 00
6261.1.0000000000400000.000000000040b000.r-x.sdmp	Linux_Trojan_Gafgyt_620087b9	unknown	unknown	0x6c13:$a: 48 89 D8 48 83 C8 01 EB 04 48 8B 76 10 48 3B 46 08 72 F6 48 8B
6261.1.0000000000400000.000000000040b000.r-x.sdmp	Linux_Trojan_Gafgyt_33b4111a	unknown	unknown	0x6ede:$a: C1 83 E1 0F 74 1A B8 10 00 00 00 48 29 C8 48 8D 0C 02 48 89 DA 48
6261.1.0000000000400000.000000000040b000.r-x.sdmp	Linux_Trojan_Mirai_6a77af0f	unknown	unknown	0x420f:$a: 31 D1 89 0F 48 83 C7 04 85 F6 7E 3B 44 89 C8 45 89 D1 45 89 C2 41
6261.1.0000000000400000.000000000040b000.r-x.sdmp	Linux_Trojan_Mirai_e0cf29e2	unknown	unknown	0x18f2:$a: 83 FE 01 76 12 0F B7 07 83 EE 02 48 83 C7 02 48 01 C2 83 FE 01
Click to see the 2 entries

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Persistence and Installation Behavior

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: x86.elf

ReversingLabs: Detection: 22%

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

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: x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_9e9530a7 Author: unknown
Source: x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_807911a2 Author: unknown
Source: x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_d4227dbf Author: unknown
Source: x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_620087b9 Author: unknown
Source: x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_33b4111a Author: unknown
Source: x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_6a77af0f Author: unknown
Source: x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_e0cf29e2 Author: unknown
Source: 6261.1.0000000000400000.000000000040b000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_9e9530a7 Author: unknown
Source: 6261.1.0000000000400000.000000000040b000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_807911a2 Author: unknown
Source: 6261.1.0000000000400000.000000000040b000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_d4227dbf Author: unknown
Source: 6261.1.0000000000400000.000000000040b000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_620087b9 Author: unknown
Source: 6261.1.0000000000400000.000000000040b000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_33b4111a Author: unknown
Source: 6261.1.0000000000400000.000000000040b000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_6a77af0f Author: unknown
Source: 6261.1.0000000000400000.000000000040b000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_e0cf29e2 Author: unknown

Source: ELF static info symbol of initial sample

.symtab present: no

Source: x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_9e9530a7 reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = d6ad6512051e87c8c35dc168d82edd071b122d026dce21d39b9782b3d6a01e50, id = 9e9530a7-ad4d-4a44-b764-437b7621052f, last_modified = 2021-09-16
Source: x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_807911a2 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = f409037091b7372f5a42bbe437316bd11c655e7a5fe1fcf83d1981cb5c4a389f, id = 807911a2-f6ec-4e65-924f-61cb065dafc6, last_modified = 2021-09-16
Source: x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_d4227dbf reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 58c4b1d4d167876b64cfa10f609911a80284180e4db093917fea16fae8ccd4e3, id = d4227dbf-6ab4-4637-a6ba-0e604acaafb4, last_modified = 2021-09-16
Source: x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_620087b9 reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 06cd7e6eb62352ec2ccb9ed48e58c0583c02fefd137cd048d053ab30b5330307, id = 620087b9-c87d-4752-89e8-ca1c16486b28, last_modified = 2021-09-16
Source: x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Gafgyt_33b4111a reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 9c3b63b9a0f54006bae12abcefdb518904a85f78be573f0780f0a265b12d2d6e, id = 33b4111a-e59e-48db-9d74-34ca44fcd9f5, last_modified = 2021-09-16
Source: x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_6a77af0f os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 4e436f509e7e732e3d0326bcbdde555bba0653213ddf31b43cfdfbe16abb0016, id = 6a77af0f-31fa-4793-82aa-10b065ba1ec0, last_modified = 2021-09-16
Source: x86.elf, type: SAMPLE	Matched rule: Linux_Trojan_Mirai_e0cf29e2 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 3f124c3c9f124264dfbbcca1e4b4d7cfcf3274170d4bf8966b6559045873948f, id = e0cf29e2-88d7-4aa4-b60a-c24626f2b246, last_modified = 2021-09-16
Source: 6261.1.0000000000400000.000000000040b000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_9e9530a7 reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = d6ad6512051e87c8c35dc168d82edd071b122d026dce21d39b9782b3d6a01e50, id = 9e9530a7-ad4d-4a44-b764-437b7621052f, last_modified = 2021-09-16
Source: 6261.1.0000000000400000.000000000040b000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_807911a2 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = f409037091b7372f5a42bbe437316bd11c655e7a5fe1fcf83d1981cb5c4a389f, id = 807911a2-f6ec-4e65-924f-61cb065dafc6, last_modified = 2021-09-16
Source: 6261.1.0000000000400000.000000000040b000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_d4227dbf reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 58c4b1d4d167876b64cfa10f609911a80284180e4db093917fea16fae8ccd4e3, id = d4227dbf-6ab4-4637-a6ba-0e604acaafb4, last_modified = 2021-09-16
Source: 6261.1.0000000000400000.000000000040b000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_620087b9 reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 06cd7e6eb62352ec2ccb9ed48e58c0583c02fefd137cd048d053ab30b5330307, id = 620087b9-c87d-4752-89e8-ca1c16486b28, last_modified = 2021-09-16
Source: 6261.1.0000000000400000.000000000040b000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Gafgyt_33b4111a reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 9c3b63b9a0f54006bae12abcefdb518904a85f78be573f0780f0a265b12d2d6e, id = 33b4111a-e59e-48db-9d74-34ca44fcd9f5, last_modified = 2021-09-16
Source: 6261.1.0000000000400000.000000000040b000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_6a77af0f os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 4e436f509e7e732e3d0326bcbdde555bba0653213ddf31b43cfdfbe16abb0016, id = 6a77af0f-31fa-4793-82aa-10b065ba1ec0, last_modified = 2021-09-16
Source: 6261.1.0000000000400000.000000000040b000.r-x.sdmp, type: MEMORY	Matched rule: Linux_Trojan_Mirai_e0cf29e2 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 3f124c3c9f124264dfbbcca1e4b4d7cfcf3274170d4bf8966b6559045873948f, id = e0cf29e2-88d7-4aa4-b60a-c24626f2b246, last_modified = 2021-09-16

Source: classification engine

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

Source: /usr/bin/dash (PID: 6224)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.MY9uKuyUPF /tmp/tmp.UJCjuL7U55 /tmp/tmp.SDfZmI8j0h			Jump to behavior
Source: /usr/bin/dash (PID: 6233)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.MY9uKuyUPF /tmp/tmp.UJCjuL7U55 /tmp/tmp.SDfZmI8j0h			Jump to behavior

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	OS Credential Dumping	System Service 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 Application Layer Protocol	Exfiltration Over Bluetooth	Network Denial of Service

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
x86.elf	22%	ReversingLabs	Linux.Backdoor.Mirai

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
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
91.189.91.43	na.elf	Get hash	malicious	Prometei	Browse
	rjfe686.elf	Get hash	malicious	Unknown	Browse
	sshd.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	drea4.elf	Get hash	malicious	Unknown	Browse
	efjepc.elf	Get hash	malicious	Unknown	Browse
	bejv86.elf	Get hash	malicious	Unknown	Browse
	weje64.elf	Get hash	malicious	Unknown	Browse
	hanoi.x86_64.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
91.189.91.42	na.elf	Get hash	malicious	Prometei	Browse
	rjfe686.elf	Get hash	malicious	Unknown	Browse
	sshd.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	drea4.elf	Get hash	malicious	Unknown	Browse
	efjepc.elf	Get hash	malicious	Unknown	Browse
	bejv86.elf	Get hash	malicious	Unknown	Browse
	weje64.elf	Get hash	malicious	Unknown	Browse
	hanoi.x86_64.elf	Get hash	malicious	Unknown	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	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	rjfe686.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	sshd.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	drea4.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	efjepc.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	bejv86.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	weje64.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	hanoi.x86_64.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
CANONICAL-ASGB	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	rjfe686.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	sshd.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	drea4.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	efjepc.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	bejv86.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	weje64.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	hanoi.x86_64.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
INIT7CH	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	rjfe686.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	sshd.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	drea4.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	efjepc.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	bejv86.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	weje64.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	hanoi.x86_64.elf	Get hash	malicious	Unknown	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 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.8777328278095045
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	x86.elf
File size:	46'432 bytes
MD5:	1cd5db1748782990c8ae4b906fef45c0
SHA1:	35e72fde35ed4b3a551f1faaa605d2217763f93e
SHA256:	a9ecbd80c1567e1bd92683051fa33b45289e769613bb47923703244835bde5a5
SHA512:	da6ef5ad29cb4ecbbfa34708c550dedfc29ab5cbcb1f47688a8a26b2ef6000357f3d0547258fd170523de5396ad9eea592468086be624b0eab995e28cbe95742
SSDEEP:	768:Ly+dWFwXZS1Kd4JlgXPtKeJt/MUpcS6oq0dtgzUcaoCWu2RRRRRRRRRRRRRRRR:D4CglGJtZT6oq06URo82RRRRRRRRRRRZ
TLSH:	8D232C07AC9184FCC484C2784676E53AD932B9BD2335FF6837C8FA3A7A196111E7DA41
File Content Preview:	.ELF..............>.......@.....@...................@.8...@.......................@.......@...............................................P.......P.............................Q.td....................................................H...._........H........

Static ELF Info

ELF header
Class:	ELF64
Data:	2's complement, little endian
Version:	1 (current)
Machine:	Advanced Micro Devices X86-64
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x400194
Flags:	0x0
ELF Header Size:	64
Program Header Offset:	64
Program Header Size:	56
Number of Program Headers:	3
Section Header Offset:	45792
Section Header Size:	64
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	0x4000e8	0xe8	0x13	0x0	0x6	AX	1
.text	PROGBITS	0x400100	0x100	0x9116	0x0	0x6	AX	16
.fini	PROGBITS	0x409216	0x9216	0xe	0x0	0x6	AX	1
.rodata	PROGBITS	0x409240	0x9240	0x1060	0x0	0x2	A	32
.ctors	PROGBITS	0x50b000	0xb000	0x10	0x0	0x3	WA	8
.dtors	PROGBITS	0x50b010	0xb010	0x10	0x0	0x3	WA	8
.data	PROGBITS	0x50b040	0xb040	0x260	0x0	0x3	WA	32
.bss	NOBITS	0x50b2a0	0xb2a0	0x1b28	0x0	0x3	WA	32
.shstrtab	STRTAB	0x0	0xb2a0	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	0x400000	0x400000	0xa2a0	0xa2a0	6.2452	0x5	R E	0x100000	.init .text .fini .rodata
LOAD	0xb000	0x50b000	0x50b000	0x2a0	0x1dc8	3.8079	0x6	RW	0x100000	.ctors .dtors .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x8

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 8
• 443 (HTTPS)
• 80 (HTTP)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 26, 2025 20:54:02.100095987 CET	43928	443	192.168.2.23	91.189.91.42
Mar 26, 2025 20:54:07.475492954 CET	42836	443	192.168.2.23	91.189.91.43
Mar 26, 2025 20:54:08.755207062 CET	42516	80	192.168.2.23	109.202.202.202
Mar 26, 2025 20:54:23.089145899 CET	43928	443	192.168.2.23	91.189.91.42
Mar 26, 2025 20:54:33.327686071 CET	42836	443	192.168.2.23	91.189.91.43
Mar 26, 2025 20:54:39.470803976 CET	42516	80	192.168.2.23	109.202.202.202
Mar 26, 2025 20:55:04.043258905 CET	43928	443	192.168.2.23	91.189.91.42
Mar 26, 2025 20:55:24.520462990 CET	42836	443	192.168.2.23	91.189.91.43

System Behavior

Analysis Process: dash PID: 6224, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6224, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.MY9uKuyUPF /tmp/tmp.UJCjuL7U55 /tmp/tmp.SDfZmI8j0h
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 6225, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: cat PID: 6225, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/cat
Arguments:	cat /tmp/tmp.MY9uKuyUPF
File size:	43416 bytes
MD5 hash:	7e9d213e404ad3bb82e4ebb2e1f2c1b3

File Activities

File Opened

File Read

Chronological Activities

Analysis Process: dash PID: 6226, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: head PID: 6226, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/head
Arguments:	head -n 10
File size:	47480 bytes
MD5 hash:	fd96a67145172477dd57131396fc9608

File Activities

File Opened

File Read

Chronological Activities

Analysis Process: dash PID: 6227, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: tr PID: 6227, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/tr
Arguments:	tr -d \\000-\\011\\013\\014\\016-\\037
File size:	51544 bytes
MD5 hash:	fbd1402dd9f72d8ebfff00ce7c3a7bb5

File Activities

File Opened

File Read

Chronological Activities

Analysis Process: dash PID: 6228, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: cut PID: 6228, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/cut
Arguments:	cut -c -80
File size:	47480 bytes
MD5 hash:	d8ed0ea8f22c0de0f8692d4d9f1759d3

File Activities

File Opened

File Read

Chronological Activities

Analysis Process: dash PID: 6229, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: cat PID: 6229, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/cat
Arguments:	cat /tmp/tmp.MY9uKuyUPF
File size:	43416 bytes
MD5 hash:	7e9d213e404ad3bb82e4ebb2e1f2c1b3

File Activities

File Opened

File Read

Chronological Activities

Analysis Process: dash PID: 6230, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: head PID: 6230, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/head
Arguments:	head -n 10
File size:	47480 bytes
MD5 hash:	fd96a67145172477dd57131396fc9608

File Activities

File Opened

File Read

Chronological Activities

Analysis Process: dash PID: 6231, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: tr PID: 6231, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/tr
Arguments:	tr -d \\000-\\011\\013\\014\\016-\\037
File size:	51544 bytes
MD5 hash:	fbd1402dd9f72d8ebfff00ce7c3a7bb5

File Activities

File Opened

File Read

Chronological Activities

Analysis Process: dash PID: 6232, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: cut PID: 6232, Parent PID: 4331

General

Start time (UTC):	19:53:55
Start date (UTC):	26/03/2025
Path:	/usr/bin/cut
Arguments:	cut -c -80
File size:	47480 bytes
MD5 hash:	d8ed0ea8f22c0de0f8692d4d9f1759d3

File Activities

File Opened

File Read

Chronological Activities

Analysis Process: dash PID: 6233, Parent PID: 4331

General

Start time (UTC):	19:53:56
Start date (UTC):	26/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6233, Parent PID: 4331

General

Start time (UTC):	19:53:56
Start date (UTC):	26/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.MY9uKuyUPF /tmp/tmp.UJCjuL7U55 /tmp/tmp.SDfZmI8j0h
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: x86.elf PID: 6261, Parent PID: 6152

General

Start time (UTC):	19:54:02
Start date (UTC):	26/03/2025
Path:	/tmp/x86.elf
Arguments:	/tmp/x86.elf
File size:	46432 bytes
MD5 hash:	1cd5db1748782990c8ae4b906fef45c0

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 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 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 x86.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

Persistence and Installation Behavior

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: dash PID: 6224, Parent PID: 4331

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6224, Parent PID: 4331

General

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 6225, Parent PID: 4331

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: cat PID: 6225, Parent PID: 4331

General

File Activities

File Opened

File Read

Chronological Activities

Analysis Process: dash PID: 6226, Parent PID: 4331

General

Process Activities

Linux Analysis Report
x86.elf