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Linux Analysis Report
linux_mips64_softfloat.elf

Overview

General Information

Sample name:	linux_mips64_softfloat.elf
Analysis ID:	1645853
MD5:	74584601708b6c164e40f65ee192c904
SHA1:	5cec8b28584057a5cc534fc64437fdaf5c642fea
SHA256:	7d5e654215256114c7b415f624763f1d4b492443c31efc7b984363142a28f15e
Tags:	elfuser-abuse_ch
Infos:

Detection

Chaos

Score:	56
Range:	0 - 100

Signatures

Multi AV Scanner detection for submitted file

Yara detected Chaos

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

Sample has stripped symbol table

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

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1645853
Start date and time:	2025-03-22 18:47:12 +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:	linux_mips64_softfloat.elf
Detection:	MAL
Classification:	mal56.troj.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/linux_mips64_softfloat.elf
PID:	6250
Exit Code:	135
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

linux_mips64_softfloat.elf (PID: 6250, Parent: 6173, MD5: 801a06b4e0ed2dca89cbfa1f900a483d) Arguments: /tmp/linux_mips64_softfloat.elf

dash New Fork (PID: 6329, Parent: 4339)

rm (PID: 6329, Parent: 4339, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.JNw8JeMLdc /tmp/tmp.rPLBV88Jvo /tmp/tmp.sibktvM7ZU

dash New Fork (PID: 6330, Parent: 4339)

rm (PID: 6330, Parent: 4339, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.JNw8JeMLdc /tmp/tmp.rPLBV88Jvo /tmp/tmp.sibktvM7ZU

cleanup

Malware Threat Intel

Provided by

Name	Description	Attribution	Blogpost URLs	Link
Chaos	Multi-functional malware written in Go, targeting both Linux and Windows, evolved from elf.kaiji.	No Attribution	https://blog.lumen.com/chaos-is-a-go-based-swiss-army-knife-of-malware/ https://www.trendmicro.com/en_us/research/22/l/linux-cryptomining-enhanced-via-chaos-rat-.html	https://malpedia.caad.fkie.fraunhofer.de/details/elf.chaos

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
linux_mips64_softfloat.elf	JoeSecurity_ChaosGo	Yara detected Chaos	Joe Security

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Persistence and Installation Behavior
• Malware Analysis System Evasion
• Stealing of Sensitive Information
• Remote Access Functionality

Click to jump to signature section

Show All Signature Results

AV Detection

Multi AV Scanner detection for submitted file

Source: linux_mips64_softfloat.elf	Virustotal: Detection: 45%			Perma Link
Source: linux_mips64_softfloat.elf	ReversingLabs: Detection: 38%

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: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknown	TCP traffic detected without corresponding DNS query: 34.249.145.219
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: 34.249.145.219

Source: linux_mips64_softfloat.elf	String found in binary or memory: http2: Transport conn %p received error from processing frame %v: %vhttp2: Transport received unsolicited DATA frame; closing connectionhttp: message cannot contain multiple Content-Length headers; got %qpadding bytes must all be zeros unless AllowIllegalWrites is enabledreflect: reflect.Value.UnsafePointer on an invalid notinheap pointerhttp2: Transport closing idle conn %p (forSingleUse=%v, maxStream=%v)tls: handshake message of length %d bytes exceeds maximum of %d bytestls: peer doesn't support the certificate custom signature algorithmsbytes.Buffer: UnreadByte: previous operation was not a successful readcannot convert slice with length %y to pointer to array with length %xgot %s for stream %d; expected CONTINUATION following %s for stream %dx509: PKCS#8 wrapping contained private key with unknown algorithm: %vx509: certificate relies on legacy Common Name field, use SANs insteadMozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)Sogou Pic Spider/3.0(+http://www.sogou.com/docs/help/webmasters.htm#07)Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)dynamic table size update MUST occur at the beginning of a header blockssh: no common algorithm for %s; client offered: %v, server offered: %vtls: peer doesn't support any of the certificate's signature algorithmstoo many concurrent operations on a single file or socket (max 1048575)x509: issuer has name constraints but leaf doesn't have a SAN extensionMozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)tls: server's certificate contains an unsupported type of public key: %Ttls: received unexpected handshake message of type %T when waiting for %T91289437fa036b34da55d57af6192768c27bd433fa012169d626d934e0051b24dd67dd3cf49d7cc827bc012d259d7ac226e70829239d7ac226e7082968de60d520eb433722c07fd236f6crypto/elliptic: internal error: Unmarshal rejected a valid point encodingmalformed response from server: malformed non-numeric status pseudo headernet/http: server replied with more than declared Content-Length; truncatedtls: certificate RSA key size too small for supported signature algorithmsUnsolicited response received on idle HTTP channel starting with %q; err=%vtls: internal error: attempted to read record with pending application datatls: failed to send closeNotify alert (but connection was closed anyway): %wtls: server certificate contains incorrect key type for selected ciphersuite((2(5[0-5]\|[0-4]\d))\|[0-1]?\d{1,2})(\.((2(5[0-5]\|[0-4]\d))\|[0-1]?\d{1,2})){3}MapIter.Next called on an iterator that does not have an associated map Valuecrypto/tls: ExportKeyingMaterial is unavailable when renegotiation is enabled115792089210356248762697446949407573529996955224135760342422259061068512044369115792089210356248762697446949407573530086143415290314195533631308867097853951ssh: internal error: algorithmSignerWrapper invoked with non-default algorithmssh: unable to authenticate, attempted methods %v, no supported methods remainx509: signature check attempt
Source: linux_mips64_softfloat.elf	String found in binary or memory: http: RoundTripper implementation (%T) returned a nil Response with a nil errortls: either ServerName or InsecureSkipVerify must be specified in the tls.Configx509: invalid signature: parent certificate cannot sign this kind of certificaterefusing to use HTTP_PROXY value in CGI environment; see golang.org/s/cgihttpproxyx509: a root or intermediate certificate is not authorized to sign for this name: (possibly because of %q while trying to verify candidate authority certificate %q)Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)x509: issuer has name constraints but leaf contains unknown or unconstrained name: tls: downgrade attempt detected, possibly due to a MitM attack or a broken middleboxx509: signature algorithm specifies an %s public key, but have public key of type %Treflect.Value.Interface: cannot return value obtained from unexported field or methodx509: failed to parse private key (use ParseECPrivateKey instead for this key format)Mozilla/5.0 (compatible; YoudaoBot/1.0; http://www.youdao.com/help/webmaster/spider/;)reflect: New of type that may not be allocated in heap (possibly undefined cgo C type)x509: a root or intermediate certificate is not authorized for an extended key usage: fxfzUc6gtMGc/i26ld3KydGKy1k7QqyMMyxjbU1Rlk+F9LQxnaTeCHGHsDUpaBeOWDeY6l+2kHlB7EWTLcGwfg==whv+Kf1cEtOXzr+zuvmef2as0WfbUDm8l2LMWBMel10NDnbShg9CsMUt327VJhOTbXLoPYJVTKy8MBPCVwoT8A==x509: failed to parse private key (use ParsePKCS1PrivateKey instead for this key format)x509: failed to parse private key (use ParsePKCS8PrivateKey instead for this key format)Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)http2: server sent GOAWAY and closed the connection; LastStreamID=%v, ErrCode=%v, debug=%qapplication/xml,application/xhtml+xml,text/html;q=0.9, text/plain;q=0.8,image/png,/;q=0.5tls: handshake hash for a client certificate requested after discarding the handshake buffertls: unsupported certificate: private key is ed25519.PrivateKey, expected ed25519.PrivateKey3617de4a96262c6f5d9e98bf9292dc29f8f41dbd289a147ce9da3113b5f0b8c00a60b1ce1d7e819d7a431d7c90ea0e5faa87ca22be8b05378eb1c71ef320ad746e1d3b628ba79b9859f741e082542a385502f25dbf55296c3a545e3872760ab7b3312fa7e23ee7e4988e056be3f82d19181d9c6efe8141120314088f5013875ac656398d8a2ed19d2a85c8edd3ec2aefhttp: RoundTripper implementation (%T) returned a *Response with content length %d but a nil BodyNoClientCertRequestClientCertRequireAnyClientCertVerifyClientCertIfGivenRequireAndVerifyClientCertcipher: the nonce can't have zero length, or the security of the key will be immediately compromised1.0.3<<RMS>> equals www.yahoo.com (Yahoo)

Source: linux_mips64_softfloat.elf	String found in binary or memory: http://help.yahoo.com/help/us/ysearch/slurp)x509:
Source: linux_mips64_softfloat.elf	String found in binary or memory: http://search.msn.com/msnbot.htm
Source: linux_mips64_softfloat.elf	String found in binary or memory: http://www.baidu.com/search/spider.html)
Source: linux_mips64_softfloat.elf	String found in binary or memory: http://www.baidu.com/search/spider.html)000102030405060708091011121314151617181920212223242526272829
Source: linux_mips64_softfloat.elf	String found in binary or memory: http://www.baidu.com/search/spider.html)Mozilla/5.0
Source: linux_mips64_softfloat.elf	String found in binary or memory: http://www.baidu.com/search/spider.html)http2:
Source: linux_mips64_softfloat.elf	String found in binary or memory: http://www.entireweb.com/about/search_tech/speedy_spider/)text/html
Source: linux_mips64_softfloat.elf	String found in binary or memory: http://www.google.com/mobile/adsbot.html)
Source: linux_mips64_softfloat.elf	String found in binary or memory: http://www.haosou.com/help/help_3_2.htmlMozilla/5.0
Source: linux_mips64_softfloat.elf	String found in binary or memory: http://www.huaweisymantec.com/cn/IRL/spider)Mozilla/5.0
Source: linux_mips64_softfloat.elf	String found in binary or memory: http://www.youdao.com/help/webmaster/spider/;)reflect:
Source: linux_mips64_softfloat.elf	String found in binary or memory: http://yandex.com/bots)http:
Source: linux_mips64_softfloat.elf	String found in binary or memory: https://search.yahoo.com/search?p=illegal
Source: linux_mips64_softfloat.elf	String found in binary or memory: https://www.baidu.com/s?wd=insufficient
Source: linux_mips64_softfloat.elf	String found in binary or memory: https://www.so.com/s?q=index

Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 39256
Source: unknown	Network traffic detected: HTTP traffic on port 39256 -> 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: mal56.troj.linELF@0/0@0/0

Source: ELF file section

Submission: linux_mips64_softfloat.elf

Source: /usr/bin/dash (PID: 6329)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.JNw8JeMLdc /tmp/tmp.rPLBV88Jvo /tmp/tmp.sibktvM7ZU			Jump to behavior
Source: /usr/bin/dash (PID: 6330)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.JNw8JeMLdc /tmp/tmp.rPLBV88Jvo /tmp/tmp.sibktvM7ZU			Jump to behavior

Source: /tmp/linux_mips64_softfloat.elf (PID: 6250)

Queries kernel information via 'uname':

Jump to behavior

Source: linux_mips64_softfloat.elf, 6250.1.00007fff2f161000.00007fff2f182000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mips64
Source: linux_mips64_softfloat.elf, 6250.1.000055e8ec7ac000.000055e8ec832000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/mips641RelativeDistinguishedName
Source: linux_mips64_softfloat.elf, 6250.1.00007fff2f161000.00007fff2f182000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-mips64/tmp/linux_mips64_softfloat.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/linux_mips64_softfloat.elf
Source: linux_mips64_softfloat.elf, 6250.1.000055e8ec7ac000.000055e8ec832000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mips64

Stealing of Sensitive Information

Yara detected Chaos

Source: Yara match

File source: linux_mips64_softfloat.elf, type: SAMPLE

Remote Access Functionality

Yara detected Chaos

Source: Yara match

File source: linux_mips64_softfloat.elf, type: SAMPLE

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
linux_mips64_softfloat.elf	45%	Virustotal		Browse
linux_mips64_softfloat.elf	39%	ReversingLabs	Linux.Trojan.Multiverze

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

URLs from Memory and Binaries

Name	Source	Malicious	Reputation
http://www.baidu.com/search/spider.html)	linux_mips64_softfloat.elf	false	high
http://search.msn.com/msnbot.htm	linux_mips64_softfloat.elf	false	high
http://www.baidu.com/search/spider.html)000102030405060708091011121314151617181920212223242526272829	linux_mips64_softfloat.elf	false	high
https://www.so.com/s?q=index	linux_mips64_softfloat.elf	false	high
http://help.yahoo.com/help/us/ysearch/slurp)x509:	linux_mips64_softfloat.elf	false	high
http://www.google.com/mobile/adsbot.html)	linux_mips64_softfloat.elf	false	high
http://www.huaweisymantec.com/cn/IRL/spider)Mozilla/5.0	linux_mips64_softfloat.elf	false	high
http://www.baidu.com/search/spider.html)http2:	linux_mips64_softfloat.elf	false	high
http://yandex.com/bots)http:	linux_mips64_softfloat.elf	false	high
http://www.baidu.com/search/spider.html)Mozilla/5.0	linux_mips64_softfloat.elf	false	high
http://www.entireweb.com/about/search_tech/speedy_spider/)text/html	linux_mips64_softfloat.elf	false	high
http://www.haosou.com/help/help_3_2.htmlMozilla/5.0	linux_mips64_softfloat.elf	false	high
https://www.baidu.com/s?wd=insufficient	linux_mips64_softfloat.elf	false	high
http://www.youdao.com/help/webmaster/spider/;)reflect:	linux_mips64_softfloat.elf	false	high
https://search.yahoo.com/search?p=illegal	linux_mips64_softfloat.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
34.249.145.219	unknown	United States	16509	AMAZON-02US	false
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
34.249.145.219	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
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
	na.elf	Get hash	malicious	Prometei	Browse
	galt.arm4.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
91.189.91.42	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	galt.arm4.elf	Get hash	malicious	Unknown	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	Browse
	na.elf	Get hash	malicious	Prometei	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
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	galt.arm4.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	galt.arm7.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	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
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	galt.arm4.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	galt.arm7.elf	Get hash	malicious	Unknown	Browse	185.125.190.26
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	Browse	91.189.91.42
	na.elf	Get hash	malicious	Prometei	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
	pp.pd.exe	Get hash	malicious	Unknown	Browse	77.109.152.87
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	galt.arm4.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
	na.elf	Get hash	malicious	Prometei	Browse	109.202.202.202
AMAZON-02US	na.elf	Get hash	malicious	Prometei	Browse	52.212.150.54
	na.elf	Get hash	malicious	Prometei	Browse	52.212.150.54
	random.exe1.exe	Get hash	malicious	Credential Flusher	Browse	52.35.133.144
	random.exe1.exe	Get hash	malicious	Credential Flusher	Browse	44.240.131.83
	na.elf	Get hash	malicious	Prometei	Browse	52.212.150.54
	na.elf	Get hash	malicious	Prometei	Browse	52.212.150.54
	na.elf	Get hash	malicious	Prometei	Browse	52.212.150.54
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219
	na.elf	Get hash	malicious	Prometei	Browse	52.212.150.54
	na.elf	Get hash	malicious	Prometei	Browse	34.249.145.219

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 MSB executable, MIPS, MIPS-III version 1 (SYSV), statically linked, Go BuildID=531EpRgthPZPt3knqoKK/ayf51kNy_prNzbkXr_MN/zxjogFIOCYVVIxufPI04/tQgJURn6GO8NPfNwspcu, stripped
Entropy (8bit):	5.399309489926398
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	linux_mips64_softfloat.elf
File size:	4'928'000 bytes
MD5:	74584601708b6c164e40f65ee192c904
SHA1:	5cec8b28584057a5cc534fc64437fdaf5c642fea
SHA256:	7d5e654215256114c7b415f624763f1d4b492443c31efc7b984363142a28f15e
SHA512:	c3ad7865a61ddef5225cc7974818c2c80fbb634801ec094dcb6f0a60308efaf402374790a660c6b01dcc42b734f713ffb2bdce8b280ec97a08ea8542007ce355
SSDEEP:	49152:XralYsYZ/MjJ7fhG2pCQLg1xbnZdY3MniR:Xr9lMjJ7f9jr
TLSH:	9336F812FF98ED2FD694213187B7C23033D5391481E07533AA96E71E2EAE275991BDC8
File Content Preview:	.ELF...................................@........ ....@.8...@...................@.......@.......@...............................................................d.......d.............................................0.......0.......................1.......2.

Static ELF Info

ELF header
Class:	ELF64
Data:	2's complement, big 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:	0x90000
Flags:	0x20000004
ELF Header Size:	64
Program Header Offset:	64
Program Header Size:	56
Number of Program Headers:	7
Section Header Offset:	456
Section Header Size:	64
Number of Section Headers:	14
Header String Table Index:	3

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.text	PROGBITS	0x11000	0x1000	0x30dbf0	0x0	0x6	AX	8
.rodata	PROGBITS	0x320000	0x310000	0xf9134	0x0	0x2	A	32
.shstrtab	STRTAB	0x0	0x409140	0xa5	0x0	0x0		1
.typelink	PROGBITS	0x419200	0x409200	0x17c8	0x0	0x2	A	32
.itablink	PROGBITS	0x41a9e0	0x40a9e0	0x948	0x0	0x2	A	32
.gosymtab	PROGBITS	0x41b328	0x40b328	0x0	0x0	0x2	A	1
.gopclntab	PROGBITS	0x41b340	0x40b340	0x14bcb8	0x0	0x2	A	32
.go.buildinfo	PROGBITS	0x570000	0x560000	0xf0	0x0	0x3	WA	16
.noptrdata	PROGBITS	0x570100	0x560100	0x31e18	0x0	0x3	WA	32
.data	PROGBITS	0x5a1f20	0x591f20	0xfe80	0x0	0x3	WA	32
.bss	NOBITS	0x5b1da0	0x5a1da0	0x30100	0x0	0x3	WA	32
.noptrbss	NOBITS	0x5e1ea0	0x5d1ea0	0xf570	0x0	0x3	WA	32
.note.go.buildid	NOTE	0x10f9c	0xf9c	0x64	0x0	0x2	A	4

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
PHDR	0x40	0x10040	0x10040	0x188	0x188	1.5030	0x4	R	0x10000
NOTE	0xf9c	0x10f9c	0x10f9c	0x64	0x64	5.3172	0x4	R	0x4	.note.go.buildid
LOAD	0x0	0x10000	0x10000	0x30ebf0	0x30ebf0	5.1371	0x5	R E	0x10000	.text .note.go.buildid
LOAD	0x310000	0x320000	0x320000	0x246ff8	0x246ff8	5.3518	0x4	R	0x10000	.rodata .typelink .itablink .gosymtab .gopclntab
LOAD	0x560000	0x570000	0x570000	0x41da0	0x81410	0.0000	0x6	RW	0x10000	.go.buildinfo .noptrdata .data .bss .noptrbss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x8
LOOS+5041580	0x0	0x0	0x0	0x0	0x0	0.0000	0x2a00		0x8

Network Behavior

Download Network PCAP: filtered – full

Network Port Distribution

Total Packets: 11
• 443 (HTTPS)
• 80 (HTTP)

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Mar 22, 2025 18:48:00.901818037 CET	43928	443	192.168.2.23	91.189.91.42
Mar 22, 2025 18:48:06.277138948 CET	42836	443	192.168.2.23	91.189.91.43
Mar 22, 2025 18:48:07.044970036 CET	42516	80	192.168.2.23	109.202.202.202
Mar 22, 2025 18:48:19.341866970 CET	39256	443	192.168.2.23	34.249.145.219
Mar 22, 2025 18:48:19.341934919 CET	443	39256	34.249.145.219	192.168.2.23
Mar 22, 2025 18:48:19.342062950 CET	39256	443	192.168.2.23	34.249.145.219
Mar 22, 2025 18:48:19.342715025 CET	39256	443	192.168.2.23	34.249.145.219
Mar 22, 2025 18:48:19.342730999 CET	443	39256	34.249.145.219	192.168.2.23
Mar 22, 2025 18:48:22.403070927 CET	43928	443	192.168.2.23	91.189.91.42
Mar 22, 2025 18:48:32.641457081 CET	42836	443	192.168.2.23	91.189.91.43
Mar 22, 2025 18:48:36.736834049 CET	42516	80	192.168.2.23	109.202.202.202
Mar 22, 2025 18:49:03.357294083 CET	43928	443	192.168.2.23	91.189.91.42
Mar 22, 2025 18:49:19.334486008 CET	39256	443	192.168.2.23	34.249.145.219
Mar 22, 2025 18:49:19.376377106 CET	443	39256	34.249.145.219	192.168.2.23
Mar 22, 2025 18:50:04.687792063 CET	443	39256	34.249.145.219	192.168.2.23

System Behavior

Analysis Process: linux_mips64_softfloat.elf PID: 6250, Parent PID: 6173

General

Start time (UTC):	17:48:00
Start date (UTC):	22/03/2025
Path:	/tmp/linux_mips64_softfloat.elf
Arguments:	/tmp/linux_mips64_softfloat.elf
File size:	5830456 bytes
MD5 hash:	801a06b4e0ed2dca89cbfa1f900a483d

File Activities

File Opened

File Read

Process Activities

Thread Sleep

System Activities

Query System Information (uname)

Chronological Activities

Analysis Process: dash PID: 6329, Parent PID: 4339

General

Start time (UTC):	17:49:18
Start date (UTC):	22/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6329, Parent PID: 4339

General

Start time (UTC):	17:49:18
Start date (UTC):	22/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.JNw8JeMLdc /tmp/tmp.rPLBV88Jvo /tmp/tmp.sibktvM7ZU
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Analysis Process: dash PID: 6330, Parent PID: 4339

General

Start time (UTC):	17:49:18
Start date (UTC):	22/03/2025
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6330, Parent PID: 4339

General

Start time (UTC):	17:49:18
Start date (UTC):	22/03/2025
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.JNw8JeMLdc /tmp/tmp.rPLBV88Jvo /tmp/tmp.sibktvM7ZU
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

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report linux_mips64_softfloat.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Persistence and Installation Behavior

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

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: linux_mips64_softfloat.elf PID: 6250, Parent PID: 6173

General

File Activities

File Opened

File Read

Process Activities

Thread Sleep

System Activities

Query System Information (uname)

Chronological Activities

Analysis Process: dash PID: 6329, Parent PID: 4339

General

Process Activities

Process Overlayed (Exec)

Chronological Activities

Analysis Process: rm PID: 6329, Parent PID: 4339

General

File Activities

File Opened

File Deleted

File Read

Chronological Activities

Linux Analysis Report
linux_mips64_softfloat.elf