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Linux Analysis Report
file.elf

Overview

General Information

Sample name:	file.elf
Analysis ID:	1587488
MD5:	5c322610e1845d0be9ccfc8a8b6a4c4f
SHA1:	0958e8d071e83028805780cf697089666286add7
SHA256:	1138aaff88a60f99f80f3ae2cbb8447125f9904785c47c662266ddfd5f3916ed
Tags:	clelfPinkuser-Bitsight
Infos:

Detection

Score:	56
Range:	0 - 100
Whitelisted:	false

Signatures

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

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

Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1587488
Start date and time:	2025-01-10 13:03:08 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 27s
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:	file.elf
Detection:	MAL
Classification:	mal56.linELF@0/0@0/0

Warnings

VT rate limit hit for: http://%s:%d/d/index.html
VT rate limit hit for: http://%s:%d/d/index.htmlcnc.pinklander.com/tmp/pink/cache_finder_page_webhttp://%s//tmp/pink/fc_ip%

Runtime Messages

Command:	/tmp/file.elf
PID:	5423
Exit Code:	255
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:	/lib/ld-uClibc.so.0: No such file or directory

Process Tree

system is lnxubuntu20

file.elf (PID: 5423, Parent: 5348, MD5: 0d6f61f82cf2f781c6eb0661071d42d9) Arguments: /tmp/file.elf

dash New Fork (PID: 5470, Parent: 3577)

rm (PID: 5470, Parent: 3577, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.2OKGkk76tS /tmp/tmp.XjTroAZnDg /tmp/tmp.w1dveJcJVJ

dash New Fork (PID: 5471, Parent: 3577)

rm (PID: 5471, Parent: 3577, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.2OKGkk76tS /tmp/tmp.XjTroAZnDg /tmp/tmp.w1dveJcJVJ

cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus / Scanner detection for submitted sample

Source: file.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: file.elf	Virustotal: Detection: 62%			Perma Link
Source: file.elf	ReversingLabs: Detection: 65%

Source: file.elf	String found in binary or memory: http://%s:%d/d/index.html
Source: file.elf	String found in binary or memory: http://%s:%d/d/index.htmlcnc.pinklander.com/tmp/pink/cache_finder_page_webhttp://%s//tmp/pink/fc_ip%

Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 37680
Source: unknown	Network traffic detected: HTTP traffic on port 37680 -> 443

Source: Initial sample	String containing 'busybox' found: busybox killall -9 httpd
Source: Initial sample	String containing 'busybox' found: busybox killall -9 tr69c
Source: Initial sample	String containing 'busybox' found: busybox killall -9 lld2d
Source: Initial sample	String containing 'busybox' found: busybox killall -9 pptp
Source: Initial sample	String containing 'busybox' found: busybox killall -9 openl2tpd
Source: Initial sample	String containing 'busybox' found: rm -rf /tmp/mybin;rm -rf /tmp/mytool;mkdir /tmp/mybin;mkdir /tmp/mytool;cp -rf /bin/* /tmp/mybin/;cp /bin/busybox /tmp/mytool/mount;cp /bin/busybox /tmp/mytool/cp;chmod 777 /tmp/mytool/;rm -rf /tmp/mybin/tr69c;rm -rf /tmp/mybin/pptp;rm -rf /tmp/mybin/openl2tpd;rm -rf /tmp/mybin/lld2d;rm -rf /tmp/mybin/sntp;rm -rf /tmp/mybin/httpd;mount -t tmpfs -o size=40m tmpfs /bin;/tmp/mytool/cp -rf /tmp/mybin/ /bin/;rm -rf /tmp/mybin;rm -rf /tmp/mytool
Source: Initial sample	String containing 'busybox' found: rm -rf /tmp/mybin;rm -rf /tmp/mytool;mkdir /tmp/mybin;mkdir /tmp/mytool;cp -rf /bin/* /tmp/mybin/;cp /bin/busybox /tmp/mytool/mount;cp /bin/busybox /tmp/mytool/cp;chmod 777 /tmp/mytool/;rm -rf /tmp/mybin/tr69c;rm -rf /tmp/mybin/pptp;rm -rf /tmp/mybin/openl2tpd;rm -rf /tmp/mybin/lld2d;rm -rf /tmp/mybin/sntp;rm -rf /tmp/mybin/httpd;mount -t tmpfs -o size=40m tmpfs /bin;/tmp/mytool/cp -rf /tmp/mybin/ /bin/;rm -rf /tmp/mybin/;cp -rf /usr/bin/ /tmp/mybin/;mount -t tmpfs -o size=1m tmpfs /usr/bin;cp -rf /tmp/mybin/* /usr/bin/;rm -rf /tmp/mybin;mount -t tmpfs -o size=1 tmpfs /sbin;mv /usr/bin/wget /usr/bin/init;cp /usr/bin/init /usr/bin/ifconfig;rm -rf /usr/bin/killall;
Source: Initial sample	String containing 'busybox' found: busybox killall -9 sntp
Source: Initial sample	String containing 'busybox' found: :%04X /proc/net/tcp/proc/net/udp/proc//proc/%s/fd/proc/%s/fd/%s%dfilterINPUTTCPDROPUDPACCEPTupnptelnetdigdmptdr/bin/mdm getvalues %s.NameTR069VOIPVOICESIPINTERNETIPTV/bin/mdm getnames InternetGatewayDevice.WANDevice.1.WANConnectionDevice.%d.WANIPConnection./bin/mdm getnames InternetGatewayDevice.WANDevice.1.WANConnectionDevice.%d.WANIPConnectionInternetGatewayDevice.WANDevice.1.WANConnectionDevice.%d.WANIPConnection.%dWANPPPConnection./bin/mdm getnames InternetGatewayDevice.WANDevice.1.WANConnectionDevice.%d.WANPPPConnectionInternetGatewayDevice.WANDevice.1.WANConnectionDevice.%d.WANPPPConnection.%d/bin/mdm getnames InternetGatewayDevice.WANDevice.1InternetGatewayDevice.WANDevice.1.WANConnectionDevice/bin/mdm getnames InternetGatewayDevice.WANDevice.1.WANConnectionDeviceInternetGatewayDevice.WANDevice.1.WANConnectionDevice.%d/tmp/kt/bin/mdm delobject InternetGatewayDevice.WANDevice.1.WANConnectionDevice.%d/bin/mdm setvalues InternetGatewayDevice.X_CU_Function.Web.UserName "%s"/bin/mdm setvalues InternetGatewa

Source: classification engine

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

Source: /usr/bin/dash (PID: 5470)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.2OKGkk76tS /tmp/tmp.XjTroAZnDg /tmp/tmp.w1dveJcJVJ			Jump to behavior
Source: /usr/bin/dash (PID: 5471)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.2OKGkk76tS /tmp/tmp.XjTroAZnDg /tmp/tmp.w1dveJcJVJ			Jump to behavior

Source: /tmp/file.elf (PID: 5423)

Queries kernel information via 'uname':

Jump to behavior

Source: file.elf, 5423.1.000055f3471ad000.000055f347234000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mipsel
Source: file.elf, 5423.1.000055f3471ad000.000055f347234000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/mipsel
Source: file.elf, 5423.1.00007ffd88791000.00007ffd887b2000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mipsel
Source: file.elf, 5423.1.00007ffd88791000.00007ffd887b2000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-mipsel/tmp/file.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/file.elf

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	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 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
file.elf	63%	Virustotal		Browse
file.elf	66%	ReversingLabs	Linux.Trojan.Pinkbot
file.elf	100%	Avira	LINUX/Agent.zjpvv

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

⊘No contacted domains info

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://%s:%d/d/index.htmlcnc.pinklander.com/tmp/pink/cache_finder_page_webhttp://%s//tmp/pink/fc_ip%	file.elf	false		unknown
http://%s:%d/d/index.html	file.elf	false		unknown

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
54.217.10.153	unknown	United States		16509	AMAZON-02US	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
54.217.10.153	Space.arm6.elf	Get hash	malicious	Unknown	Browse
	RpcSecurity.mips.elf	Get hash	malicious	Unknown	Browse
	mips64.elf	Get hash	malicious	Mirai	Browse
	Space.ppc.elf	Get hash	malicious	Mirai	Browse
	.5r3fqt67ew531has4231.mpsl.elf	Get hash	malicious	Gafgyt, Mirai, Moobot, Okiru	Browse
	m68k.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	i686.elf	Get hash	malicious	Mirai, Gafgyt	Browse
	loligang.arm5.elf	Get hash	malicious	Mirai	Browse
	vqsjh4.elf	Get hash	malicious	Mirai	Browse
	x-3.2-.ISIS.elf	Get hash	malicious	Gafgyt	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
AMAZON-02US	https://app.planable.io/review/0OPaw36t6M_k	Get hash	malicious	HTMLPhisher	Browse	52.17.171.17
	https://we.tl/t-fnebgmrnYQ	Get hash	malicious	Unknown	Browse	18.245.46.98
	Undelivered Messages.htm	Get hash	malicious	Unknown	Browse	18.245.31.5
	arm7.elf	Get hash	malicious	Unknown	Browse	54.171.230.55
	Client.exe	Get hash	malicious	AsyncRAT	Browse	35.154.189.194
	1162-201.exe	Get hash	malicious	FormBook	Browse	76.223.67.189
	https://cdn.btmessage.com/	Get hash	malicious	HTMLPhisher	Browse	52.211.89.170
	3.elf	Get hash	malicious	Unknown	Browse	18.151.37.43
	http://www.jmclmedia.ph	Get hash	malicious	Unknown	Browse	13.32.121.98
	5.elf	Get hash	malicious	Unknown	Browse	34.248.106.44

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, MIPS, MIPS-I version 1 (SYSV), dynamically linked, interpreter /lib/ld-uClibc.so.0, no section header
Entropy (8bit):	5.304723125479465
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	file.elf
File size:	543'944 bytes
MD5:	5c322610e1845d0be9ccfc8a8b6a4c4f
SHA1:	0958e8d071e83028805780cf697089666286add7
SHA256:	1138aaff88a60f99f80f3ae2cbb8447125f9904785c47c662266ddfd5f3916ed
SHA512:	ff0596d12b9b3102a89e12de688ba77a79c7b3269d238e3274f9d34efffb5bea38a8779fb7c12a116d6f700b4c5334ede7b9a86d7d3bdeaf6517d2b4c551c5af
SSDEEP:	6144:O/nsi54s/8sSIbbHBtwjWqkVJh9heL8w0SXIPesuqv5bYB:anrzEIwjEhk0qpNX
TLSH:	9BC45FEEA7A12EBFE86E9E3201654582144C428A12D71B7FE1F6C518F78F90F49D3C58
File Content Preview:	.ELF.....................a@.4...........4. ...(.........4...4.@.4.@. ... ...............T...T.@.T.@....................ph...h.@.h.@...........................@...@..1...1...............1...1I..1I.$....V....................@...@.................P.td.1...1H

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	MIPS R3000
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x406100
Flags:	0x1007
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	9
Section Header Offset:	0
Section Header Size:	40
Number of Section Headers:	0
Header String Table Index:	0

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Prog Interpreter
PHDR	0x34	0x400034	0x400034	0x120	0x120	2.5477	0x5	R E	0x4
INTERP	0x154	0x400154	0x400154	0x14	0x14	3.6842	0x4	R	0x1	/lib/ld-uClibc.so.0
<unknown>	0x168	0x400168	0x400168	0x18	0x18	1.4575	0x4	R	0x4
LOAD	0x0	0x400000	0x400000	0x831a4	0x831a4	5.3017	0x5	R E	0x10000
LOAD	0x831a4	0x4931a4	0x4931a4	0x1b24	0x125618	4.6926	0x6	RW	0x10000
DYNAMIC	0x180	0x400180	0x400180	0xc0	0xc0	2.4323	0x7	RWE	0x4
GNU_EH_FRAME	0x83190	0x483190	0x483190	0x14	0x14	2.8394	0x4	R	0x4
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4
NULL	0x0	0x0	0x0	0x0	0x0	0.0000	0x0		0x4

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Jan 10, 2025 13:04:22.753211975 CET	37680	443	192.168.2.13	54.217.10.153
Jan 10, 2025 13:04:22.758332014 CET	443	37680	54.217.10.153	192.168.2.13
Jan 10, 2025 13:04:22.758397102 CET	37680	443	192.168.2.13	54.217.10.153

System Behavior

Analysis Process: file.elf PID: 5423, Parent PID: 5348

General

Start time (UTC):	12:03:54
Start date (UTC):	10/01/2025
Path:	/tmp/file.elf
Arguments:	/tmp/file.elf
File size:	5773336 bytes
MD5 hash:	0d6f61f82cf2f781c6eb0661071d42d9

Chronological Activities

Analysis Process: dash PID: 5470, Parent PID: 3577

General

Start time (UTC):	12:04:21
Start date (UTC):	10/01/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 5470, Parent PID: 3577

General

Start time (UTC):	12:04:21
Start date (UTC):	10/01/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.2OKGkk76tS /tmp/tmp.XjTroAZnDg /tmp/tmp.w1dveJcJVJ
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: dash PID: 5471, Parent PID: 3577

General

Start time (UTC):	12:04:21
Start date (UTC):	10/01/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 5471, Parent PID: 3577

General

Start time (UTC):	12:04:21
Start date (UTC):	10/01/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.2OKGkk76tS /tmp/tmp.XjTroAZnDg /tmp/tmp.w1dveJcJVJ
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

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 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

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Warning!

Linux Analysis Report file.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

Runtime Messages

Process Tree

Yara Signatures

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Persistence and Installation Behavior

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

URLs from Memory and Binaries

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

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: file.elf PID: 5423, Parent PID: 5348

General

Chronological Activities

Analysis Process: dash PID: 5470, Parent PID: 3577

General

Chronological Activities

Analysis Process: rm PID: 5470, Parent PID: 3577

General

Chronological Activities

Analysis Process: dash PID: 5471, Parent PID: 3577

General

Chronological Activities

Analysis Process: rm PID: 5471, Parent PID: 3577

General

Chronological Activities

Linux Analysis Report
file.elf