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Linux Analysis Report
mipsel.elf

Overview

General Information

Sample name:	mipsel.elf
Analysis ID:	1581135
MD5:	e6ef7bd0b355ee2f5810ab2a955c2066
SHA1:	0e672248ee36a32053148d48da91bb6f4c76d0ad
SHA256:	358ae8f9b931fd7ada8c54e558e16f2db7400f85a0c6215f1ff36f6c13ea300f
Tags:	elfuser-abuse_ch
Infos:

Detection

Score:	48
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

Sample has stripped symbol table

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)

Classification

General Information

Joe Sandbox version:	41.0.0 Charoite
Analysis ID:	1581135
Start date and time:	2024-12-27 04:52:07 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 39s
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:	mipsel.elf
Detection:	MAL
Classification:	mal48.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/mipsel.elf
PID:	6237
Exit Code:	2
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:	fatal error: sigaction failed runtime stack: runtime.throw({0x382b3f, 0x10}) C:/Program Files/Go/src/runtime/panic.go:1077 +0x54 fp=0x7ffffce4 sp=0x7ffffcd0 pc=0x5a40c runtime.sysSigaction.func1() C:/Program Files/Go/src/runtime/os_linux.go:560 +0x4c fp=0x7ffffcf0 sp=0x7ffffce4 pc=0x95d64 runtime.sysSigaction(0x41, 0x7ffffd18, 0x0) C:/Program Files/Go/src/runtime/os_linux.go:559 +0x7c fp=0x7ffffd08 sp=0x7ffffcf0 pc=0x569dc runtime.sigaction(...) C:/Program Files/Go/src/runtime/sigaction.go:15 runtime.setsig(0x41, 0x78f80) C:/Program Files/Go/src/runtime/os_linux.go:507 +0xbc fp=0x7ffffd34 sp=0x7ffffd08 pc=0x568a8 runtime.initsig(0x0) C:/Program Files/Go/src/runtime/signal_unix.go:148 +0x2c0 fp=0x7ffffd70 sp=0x7ffffd34 pc=0x785cc runtime.mstartm0() C:/Program Files/Go/src/runtime/proc.go:1624 +0x70 fp=0x7ffffd78 sp=0x7ffffd70 pc=0x62394 runtime.mstart1() C:/Program Files/Go/src/runtime/proc.go:1596 +0x94 fp=0x7ffffd88 sp=0x7ffffd78 pc=0x6228c runtime.mstart0() C:/Program Files/Go/src/runtime/proc.go:1557 +0x7c fp=0x7ffffd9c sp=0x7ffffd88 pc=0x621d8 runtime.mstart() C:/Program Files/Go/src/runtime/asm_mipsx.s:89 +0x14 fp=0x7ffffda0 sp=0x7ffffd9c pc=0x9d424 goroutine 1 [runnable]: runtime.main() C:/Program Files/Go/src/runtime/proc.go:144 fp=0x8227ec sp=0x8227ec pc=0x5e2f0 runtime.goexit() C:/Program Files/Go/src/runtime/asm_mipsx.s:641 +0x4 fp=0x8227ec sp=0x8227ec pc=0x9f858

Process Tree

system is lnxubuntu20

mipsel.elf (PID: 6237, Parent: 6160, MD5: 0d6f61f82cf2f781c6eb0661071d42d9) Arguments: /tmp/mipsel.elf

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

Multi AV Scanner detection for submitted file

Source: mipsel.elf

ReversingLabs: Detection: 26%

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: mipsel.elf	String found in binary or memory: http://.css
Source: mipsel.elf	String found in binary or memory: http://.jpg
Source: mipsel.elf	String found in binary or memory: http://html4/loose.dtd

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

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

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

Source: ELF file section

Submission: mipsel.elf

Source: /tmp/mipsel.elf (PID: 6237)

Queries kernel information via 'uname':

Jump to behavior

Source: mipsel.elf, 6237.1.000055d4226b2000.000055d4229b7000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mipsel
Source: mipsel.elf, 6237.1.00007ffe433cc000.00007ffe433ed000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-mipsel/tmp/mipsel.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/mipsel.elf
Source: mipsel.elf, 6237.1.000055d4226b2000.000055d4229b7000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/mipsel
Source: mipsel.elf, 6237.1.00007ffe433cc000.00007ffe433ed000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mipsel

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 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
mipsel.elf	26%	ReversingLabs	Linux.Trojan.Kaiji

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	Reputation
http://html4/loose.dtd	mipsel.elf	false	high
http://.css	mipsel.elf	false	high
http://.jpg	mipsel.elf	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	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	.i.elf	Get hash	malicious	Unknown	Browse
	db0fa4b8db0333367e9bda3ab68b8042.mips.elf	Get hash	malicious	Unknown	Browse
	db0fa4b8db0333367e9bda3ab68b8042.arm6.elf	Get hash	malicious	Unknown	Browse
	feiwbps.elf	Get hash	malicious	Mirai	Browse
	most-mips.elf	Get hash	malicious	Unknown	Browse
	boatnet.mips.elf	Get hash	malicious	Mirai	Browse
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse
	boatnet.spc.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse
91.189.91.42	.i.elf	Get hash	malicious	Unknown	Browse
	db0fa4b8db0333367e9bda3ab68b8042.mips.elf	Get hash	malicious	Unknown	Browse
	db0fa4b8db0333367e9bda3ab68b8042.arm6.elf	Get hash	malicious	Unknown	Browse
	feiwbps.elf	Get hash	malicious	Mirai	Browse
	most-mips.elf	Get hash	malicious	Unknown	Browse
	boatnet.mips.elf	Get hash	malicious	Mirai	Browse
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse
	boatnet.spc.elf	Get hash	malicious	Mirai	Browse
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	.i.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	db0fa4b8db0333367e9bda3ab68b8042.mips.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	db0fa4b8db0333367e9bda3ab68b8042.arm6.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	feiwbps.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	most-mips.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	boatnet.mips.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.spc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
CANONICAL-ASGB	.i.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	db0fa4b8db0333367e9bda3ab68b8042.mips.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	db0fa4b8db0333367e9bda3ab68b8042.arm6.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	feiwbps.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	most-mips.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	boatnet.mips.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.spc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.ppc.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
INIT7CH	.i.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	db0fa4b8db0333367e9bda3ab68b8042.mips.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	db0fa4b8db0333367e9bda3ab68b8042.arm6.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	feiwbps.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	most-mips.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	boatnet.mips.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.spc.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.ppc.elf	Get hash	malicious	Mirai	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, MIPS, MIPS32 version 1 (SYSV), statically linked, Go BuildID=QE4pk8R3EUTJX7Ebl539/vbV9DA8vxdH59ZldxCXf/c2z7fQ7clfsJ1ESK65aY/d6Lnh7amz82XZM0sa_F7, stripped
Entropy (8bit):	5.605444160105548
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	mipsel.elf
File size:	5'767'168 bytes
MD5:	e6ef7bd0b355ee2f5810ab2a955c2066
SHA1:	0e672248ee36a32053148d48da91bb6f4c76d0ad
SHA256:	358ae8f9b931fd7ada8c54e558e16f2db7400f85a0c6215f1ff36f6c13ea300f
SHA512:	a7888ad1dc90fa4cf4c6179399fd13deea186b6146f0adfab0d539bb08f709ff02a801b8ddd0415d5eb643af6ee5b4bd84cf93e5cf9894092c58872ba55d1ef1
SSDEEP:	49152:YzYDt2QsZfbpswDWv/96InSJQ3JljeVOl:Qsw6FnoAH
TLSH:	2D46F705AD842BE7C42C4F7495E6CD6522B01E140AF14B3A26A5FFE9BCB62747F0399C
File Content Preview:	.ELF........................4..........P4. ...(.........4...4...4...................................d...d.............................0...0...............1...2...2.t.!.t.!...............S...T...T......h..........Q.td...............................p.......

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:	0x9ffcc
Flags:	0x50001004
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	7
Section Header Offset:	276
Section Header Size:	40
Number of Section Headers:	16
Header String Table Index:	4

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.text	PROGBITS	0x11000	0x1000	0x308ffc	0x0	0x6	AX	4
.rodata	PROGBITS	0x320000	0x310000	0xcfa54	0x0	0x2	A	32
.gnu.attributes	GNU_ATTRIBUTES	0x0	0x3dfa60	0x10	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x3dfa80	0xb7	0x0	0x0		1
.typelink	PROGBITS	0x3efb40	0x3dfb40	0x16fc	0x0	0x2	A	32
.itablink	PROGBITS	0x3f1240	0x3e1240	0x48c	0x0	0x2	A	32
.gosymtab	PROGBITS	0x3f16cc	0x3e16cc	0x0	0x0	0x2	A	1
.gopclntab	PROGBITS	0x3f16e0	0x3e16e0	0x14bc94	0x0	0x2	A	32
.go.buildinfo	PROGBITS	0x540000	0x530000	0x150	0x0	0x3	WA	16
.noptrdata	PROGBITS	0x540160	0x530160	0x469e0	0x0	0x3	WA	32
.data	PROGBITS	0x586b40	0x576b40	0x6cb0	0x0	0x3	WA	32
.bss	NOBITS	0x58d800	0x57d800	0x11df8	0x0	0x3	WA	32
.noptrbss	NOBITS	0x59f600	0x58f600	0x72e8	0x0	0x3	WA	32
.note.go.buildid	NOTE	0x10f9c	0xf9c	0x64	0x0	0x2	A	4
.MIPS.abiflags	MIPS_ABIFLAGS	0x10f84	0xf84	0x18	0x0	0x2	A	8

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
PHDR	0x34	0x10034	0x10034	0xe0	0xe0	2.4224	0x4	R	0x10000
NOTE	0xf9c	0x10f9c	0x10f9c	0x64	0x64	5.3096	0x4	R	0x4	.note.go.buildid
LOAD	0x0	0x10000	0x10000	0x309ffc	0x309ffc	5.1585	0x5	R E	0x10000	.text .note.go.buildid .MIPS.abiflags
LOAD	0x310000	0x320000	0x320000	0x21d374	0x21d374	5.5795	0x4	R	0x10000	.rodata .typelink .itablink .gosymtab .gopclntab
LOAD	0x530000	0x540000	0x540000	0x4d800	0x668e8	6.3485	0x6	RW	0x10000	.go.buildinfo .noptrdata .data .bss .noptrbss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x4
ABIFLAGS	0xf84	0x10f84	0x10f84	0x18	0x18	1.0239	0x4	R	0x8	.MIPS.abiflags

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Dec 27, 2024 04:52:53.077306032 CET	43928	443	192.168.2.23	91.189.91.42
Dec 27, 2024 04:52:58.708554983 CET	42836	443	192.168.2.23	91.189.91.43
Dec 27, 2024 04:52:59.988349915 CET	42516	80	192.168.2.23	109.202.202.202
Dec 27, 2024 04:53:14.578397036 CET	43928	443	192.168.2.23	91.189.91.42
Dec 27, 2024 04:53:24.817030907 CET	42836	443	192.168.2.23	91.189.91.43
Dec 27, 2024 04:53:30.960237026 CET	42516	80	192.168.2.23	109.202.202.202
Dec 27, 2024 04:53:55.532833099 CET	43928	443	192.168.2.23	91.189.91.42

System Behavior

Analysis Process: mipsel.elf PID: 6237, Parent PID: 6160

General

Start time (UTC):	03:52:51
Start date (UTC):	27/12/2024
Path:	/tmp/mipsel.elf
Arguments:	/tmp/mipsel.elf
File size:	5773336 bytes
MD5 hash:	0d6f61f82cf2f781c6eb0661071d42d9

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

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report mipsel.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Yara Signatures

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

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

Sections

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: mipsel.elf PID: 6237, Parent PID: 6160

General

Chronological Activities

Linux Analysis Report
mipsel.elf