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Linux Analysis Report
linux_mips64el_softfloat.elf

Overview

General Information

Sample name:	linux_mips64el_softfloat.elf
Analysis ID:	1546468
MD5:	006fe86e7c4b72bd8625d87b69d5ffe6
SHA1:	f56e08fd9b40da25535fa6e38e1fc97914999bdd
SHA256:	a5ad53df08876877c86a4044b1662770570cfedb87f27ff15aa0c2f65650ed7e
Tags:	elfuser-abuse_ch
Infos:

Detection

Chaos

Score:	56
Range:	0 - 100
Whitelisted:	false

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:	41.0.0 Charoite
Analysis ID:	1546468
Start date and time:	2024-11-01 00:02:07 +01:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 37s
Hypervisor based Inspection enabled:	false
Report type:	full
Cookbook file name:	defaultlinuxfilecookbook.jbs
Analysis system description:	Ubuntu Linux 20.04 x64 (Kernel 5.4.0-72, Firefox 91.0, Evince Document Viewer 3.36.10, LibreOffice 6.4.7.2, OpenJDK 11.0.11)
Analysis Mode:	default
Sample name:	linux_mips64el_softfloat.elf
Detection:	MAL
Classification:	mal56.troj.linELF@0/2@0/0

Warnings

VT rate limit hit for: linux_mips64el_softfloat.elf

Runtime Messages

Command:	/tmp/linux_mips64el_softfloat.elf
PID:	6229
Exit Code:	2
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:	fatal error: sigaction failed runtime stack: runtime.throw({0x39ae60, 0x10}) /usr/lib/go-1.18/src/runtime/panic.go:992 +0x6c runtime.sysSigaction.func1() /usr/lib/go-1.18/src/runtime/os_linux.go:529 +0x4c runtime.sysSigaction(0x41, 0x4000800ba0, 0x0) /usr/lib/go-1.18/src/runtime/os_linux.go:528 +0x88 runtime.sigaction(0x41, 0x4000800ba0, 0x0) /usr/lib/go-1.18/src/runtime/sigaction.go:15 +0x28 runtime.setsig(0x41, 0x6ecf0) /usr/lib/go-1.18/src/runtime/os_linux.go:478 +0xb0 runtime.initsig(0x0) /usr/lib/go-1.18/src/runtime/signal_unix.go:147 +0x348 runtime.mstartm0() /usr/lib/go-1.18/src/runtime/proc.go:1442 +0x78 runtime.mstart1() /usr/lib/go-1.18/src/runtime/proc.go:1414 +0x94 runtime.mstart0() /usr/lib/go-1.18/src/runtime/proc.go:1376 +0x74 runtime.mstart() /usr/lib/go-1.18/src/runtime/asm_mips64x.s:88 +0x10 goroutine 1 [runnable]: runtime.main() /usr/lib/go-1.18/src/runtime/proc.go:145 runtime.goexit() /usr/lib/go-1.18/src/runtime/asm_mips64x.s:617 +0x4

Process Tree

system is lnxubuntu20

linux_mips64el_softfloat.elf (PID: 6229, Parent: 6154, MD5: bba92fd1c51079d6ff2478396026936a) Arguments: /tmp/linux_mips64el_softfloat.elf

dash New Fork (PID: 6263, Parent: 4331)

rm (PID: 6263, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.LkCmKdQBBO /tmp/tmp.MMImyIRFhD /tmp/tmp.7Yjo1CueSR

dash New Fork (PID: 6264, Parent: 4331)

rm (PID: 6264, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.LkCmKdQBBO /tmp/tmp.MMImyIRFhD /tmp/tmp.7Yjo1CueSR

sshd New Fork (PID: 6286, Parent: 936)

sshd (PID: 6286, Parent: 936, MD5: dbca7a6bbf7bf57fedac243d4b2cb340) Arguments: /usr/sbin/sshd -D -R

sshd New Fork (PID: 6293, Parent: 936)

sshd (PID: 6293, Parent: 936, MD5: dbca7a6bbf7bf57fedac243d4b2cb340) Arguments: /usr/sbin/sshd -D -R

sshd New Fork (PID: 6294, Parent: 6293)

sshd New Fork (PID: 6297, Parent: 936)

sshd (PID: 6297, Parent: 936, MD5: dbca7a6bbf7bf57fedac243d4b2cb340) Arguments: /usr/sbin/sshd -D -R

sshd New Fork (PID: 6298, Parent: 6297)

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_mips64el_softfloat.elf	JoeSecurity_ChaosGo	Yara detected Chaos	Joe Security

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: linux_mips64el_softfloat.elf

ReversingLabs: Detection: 52%

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: 54.171.230.55
Source: unknown	TCP traffic detected without corresponding DNS query: 54.171.230.55
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: linux_mips64el_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_mips64el_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_mips64el_softfloat.elf	String found in binary or memory: http://help.yahoo.com/help/us/ysearch/slurp)x509:
Source: linux_mips64el_softfloat.elf	String found in binary or memory: http://search.msn.com/msnbot.htm
Source: linux_mips64el_softfloat.elf	String found in binary or memory: http://www.baidu.com/search/spider.html)
Source: linux_mips64el_softfloat.elf	String found in binary or memory: http://www.baidu.com/search/spider.html)000102030405060708091011121314151617181920212223242526272829
Source: linux_mips64el_softfloat.elf	String found in binary or memory: http://www.baidu.com/search/spider.html)Mozilla/5.0
Source: linux_mips64el_softfloat.elf	String found in binary or memory: http://www.baidu.com/search/spider.html)http2:
Source: linux_mips64el_softfloat.elf	String found in binary or memory: http://www.entireweb.com/about/search_tech/speedy_spider/)text/html
Source: linux_mips64el_softfloat.elf	String found in binary or memory: http://www.google.com/mobile/adsbot.html)
Source: linux_mips64el_softfloat.elf	String found in binary or memory: http://www.haosou.com/help/help_3_2.htmlMozilla/5.0
Source: linux_mips64el_softfloat.elf	String found in binary or memory: http://www.huaweisymantec.com/cn/IRL/spider)Mozilla/5.0
Source: linux_mips64el_softfloat.elf	String found in binary or memory: http://www.youdao.com/help/webmaster/spider/;)reflect:
Source: linux_mips64el_softfloat.elf	String found in binary or memory: http://yandex.com/bots)http:
Source: linux_mips64el_softfloat.elf	String found in binary or memory: https://search.yahoo.com/search?p=illegal
Source: linux_mips64el_softfloat.elf	String found in binary or memory: https://www.baidu.com/s?wd=insufficient
Source: linux_mips64el_softfloat.elf	String found in binary or memory: https://www.so.com/s?q=index

Source: unknown	Network traffic detected: HTTP traffic on port 443 -> 33606
Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 33606 -> 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@0/2@0/0

Source: ELF file section

Submission: linux_mips64el_softfloat.elf

Source: /usr/bin/dash (PID: 6263)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.LkCmKdQBBO /tmp/tmp.MMImyIRFhD /tmp/tmp.7Yjo1CueSR			Jump to behavior
Source: /usr/bin/dash (PID: 6264)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.LkCmKdQBBO /tmp/tmp.MMImyIRFhD /tmp/tmp.7Yjo1CueSR			Jump to behavior

Source: /tmp/linux_mips64el_softfloat.elf (PID: 6229)

Queries kernel information via 'uname':

Jump to behavior

Source: linux_mips64el_softfloat.elf, 6229.1.00007ffc29f90000.00007ffc29fb1000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-mips64el/tmp/linux_mips64el_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_mips64el_softfloat.elf
Source: linux_mips64el_softfloat.elf, 6229.1.00007ffc29f90000.00007ffc29fb1000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mips64el
Source: linux_mips64el_softfloat.elf, 6229.1.000055d30fbdd000.000055d30ff52000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mips64el
Source: linux_mips64el_softfloat.elf, 6229.1.000055d30fbdd000.000055d30ff52000.rw-.sdmp	Binary or memory string: U1MIPS64R2-generic-mips64-cpu1/etc/qemu-binfmt/mips64elu

Stealing of Sensitive Information

Yara detected Chaos

Source: Yara match

File source: linux_mips64el_softfloat.elf, type: SAMPLE

Remote Access Functionality

Yara detected Chaos

Source: Yara match

File source: linux_mips64el_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_mips64el_softfloat.elf	53%	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://www.baidu.com/search/spider.html)	linux_mips64el_softfloat.elf	false	unknown
http://search.msn.com/msnbot.htm	linux_mips64el_softfloat.elf	false	unknown
http://www.baidu.com/search/spider.html)000102030405060708091011121314151617181920212223242526272829	linux_mips64el_softfloat.elf	false	unknown
https://www.so.com/s?q=index	linux_mips64el_softfloat.elf	false	unknown
http://help.yahoo.com/help/us/ysearch/slurp)x509:	linux_mips64el_softfloat.elf	false	unknown
http://www.google.com/mobile/adsbot.html)	linux_mips64el_softfloat.elf	false	unknown
http://www.huaweisymantec.com/cn/IRL/spider)Mozilla/5.0	linux_mips64el_softfloat.elf	false	unknown
http://www.baidu.com/search/spider.html)http2:	linux_mips64el_softfloat.elf	false	unknown
http://yandex.com/bots)http:	linux_mips64el_softfloat.elf	false	unknown
http://www.baidu.com/search/spider.html)Mozilla/5.0	linux_mips64el_softfloat.elf	false	unknown
http://www.entireweb.com/about/search_tech/speedy_spider/)text/html	linux_mips64el_softfloat.elf	false	unknown
http://www.haosou.com/help/help_3_2.htmlMozilla/5.0	linux_mips64el_softfloat.elf	false	unknown
https://www.baidu.com/s?wd=insufficient	linux_mips64el_softfloat.elf	false	unknown
http://www.youdao.com/help/webmaster/spider/;)reflect:	linux_mips64el_softfloat.elf	false	unknown
https://search.yahoo.com/search?p=illegal	linux_mips64el_softfloat.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	ASN	ASN Name	Malicious
54.171.230.55	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
54.171.230.55	x.rar.elf	Get hash	malicious	Xmrig	Browse
	tyo2831qq.arm7.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	tyo2831qq.m68k.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	.i.elf	Get hash	malicious	Unknown	Browse
	la.bot.sh4.elf	Get hash	malicious	Unknown	Browse
	la.bot.mipsel.elf	Get hash	malicious	Unknown	Browse
	ppc.elf	Get hash	malicious	Unknown	Browse
	zmap.x86_64.elf	Get hash	malicious	Okiru	Browse
	na.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	qkehusl.elf	Get hash	malicious	Gafgyt, Mirai, Okiru	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	linux_amd64.elf	Get hash	malicious	Chaos	Browse
	.i.elf	Get hash	malicious	Unknown	Browse
	linux_arm6.elf	Get hash	malicious	Chaos	Browse
	linux_mips64.elf	Get hash	malicious	Chaos	Browse
	linux_arm5.elf	Get hash	malicious	Chaos	Browse
	Mozi.m.elf	Get hash	malicious	Unknown	Browse
	x.rar.elf	Get hash	malicious	Xmrig	Browse
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse
	boatnet.m68k.elf	Get hash	malicious	Mirai	Browse
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse
91.189.91.42	linux_amd64.elf	Get hash	malicious	Chaos	Browse
	.i.elf	Get hash	malicious	Unknown	Browse
	linux_arm6.elf	Get hash	malicious	Chaos	Browse
	linux_mips64.elf	Get hash	malicious	Chaos	Browse
	linux_arm5.elf	Get hash	malicious	Chaos	Browse
	Mozi.m.elf	Get hash	malicious	Unknown	Browse
	x.rar.elf	Get hash	malicious	Xmrig	Browse
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse
	boatnet.m68k.elf	Get hash	malicious	Mirai	Browse
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	linux_amd64.elf	Get hash	malicious	Chaos	Browse	91.189.91.42
	.i.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	linux_arm6.elf	Get hash	malicious	Chaos	Browse	91.189.91.42
	linux_mips64.elf	Get hash	malicious	Chaos	Browse	91.189.91.42
	linux_arm5.elf	Get hash	malicious	Chaos	Browse	91.189.91.42
	Mozi.m.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	x.rar.elf	Get hash	malicious	Xmrig	Browse	91.189.91.42
	boatnet.arm6.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.mpsl.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
CANONICAL-ASGB	linux_amd64.elf	Get hash	malicious	Chaos	Browse	91.189.91.42
	.i.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	linux_arm6.elf	Get hash	malicious	Chaos	Browse	91.189.91.42
	linux_mips64.elf	Get hash	malicious	Chaos	Browse	91.189.91.42
	linux_arm5.elf	Get hash	malicious	Chaos	Browse	91.189.91.42
	Mozi.m.elf	Get hash	malicious	Unknown	Browse	91.189.91.42
	x.rar.elf	Get hash	malicious	Xmrig	Browse	91.189.91.42
	boatnet.arm6.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	boatnet.mpsl.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
AMAZON-02US	https://www.dropbox.com/l/scl/AAATBuomd5HmxEQWOFFl7juYr5pumA9OT78	Get hash	malicious	Unknown	Browse	34.249.87.52
	https://www.dropbox.com/l/scl/AAATBuomd5HmxEQWOFFl7juYr5pumA9OT78	Get hash	malicious	Unknown	Browse	143.204.95.12
	https://www.dropbox.com/l/scl/AAATBuomd5HmxEQWOFFl7juYr5pumA9OT78	Get hash	malicious	Unknown	Browse	143.204.95.12
	https://www.dropbox.com/scl/fi/ghbickob35cseupehrevo/A-file-has-been-sent-to-you-via-DROPBOX.pdf?oref=e&r=ACTqvRbsSp0aGfWJ258Mnmig2JSiZYPEXawWQbeoOGqhLQ0A_g08q_6x9uCS3GDD06X2I92wp1DOmKpzocpy-33mPeFHFTHNUnOplz6Tt7UNKnGCY5hdeIU9t4fHEX4CzcseX3o9vxkcg76RpGddDTfgU6DIWzrB6Y3NN3SHwd0oXjHE8-2WVTMkcFhAlN56hFRzwFRs7uWEYIbpWWN2yfXr&sm=1&dl=0	Get hash	malicious	Unknown	Browse	143.204.95.12
	https://www.phsinc.com/?bwfan-track-action=click&bwfan-track-id=0ecdd1bdf2276cad3fa2d27ffa918e84&bwfan-uid=e2dffed46dd69d19d18bc527d6255bd5&bwfan-link=%68%74%74%70%73%3A%2F%2F%6D%61%69%6C%2E%72%69%67%6F%74%69%6C%65%73%2E%63%6F%6D%2F%6A%50%73%51%57%55%63%42	Get hash	malicious	HTMLPhisher, ReCaptcha Phish	Browse	3.132.253.175
	file.exe	Get hash	malicious	Stealc, Vidar	Browse	18.238.171.119
	https://hotmail.pizza4you.com.br/	Get hash	malicious	Mamba2FA	Browse	13.227.219.11
	x.rar.elf	Get hash	malicious	Xmrig	Browse	54.171.230.55
	file.exe	Get hash	malicious	Stealc, Vidar	Browse	18.244.18.32
	El9HaBFrFM.exe	Get hash	malicious	Blank Grabber	Browse	54.170.20.205
INIT7CH	linux_amd64.elf	Get hash	malicious	Chaos	Browse	109.202.202.202
	.i.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	linux_arm6.elf	Get hash	malicious	Chaos	Browse	109.202.202.202
	linux_mips64.elf	Get hash	malicious	Chaos	Browse	109.202.202.202
	linux_arm5.elf	Get hash	malicious	Chaos	Browse	109.202.202.202
	Mozi.m.elf	Get hash	malicious	Unknown	Browse	109.202.202.202
	x.rar.elf	Get hash	malicious	Xmrig	Browse	109.202.202.202
	boatnet.arm.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.m68k.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	boatnet.x86.elf	Get hash	malicious	Mirai	Browse	109.202.202.202

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

/var/log/btmp

Download File

Process:	/usr/sbin/sshd
File Type:	data
Category:	dropped
Size (bytes):	384
Entropy (8bit):	0.8735982127940438
Encrypted:	false
SSDEEP:	3:SXNfuaDLwbUylPCXlN4lt:wNfPMbUyl61GX
MD5:	F77A67AFC5BD1B697C7AEDB43A8C0D0C
SHA1:	C9C3B4CB3A852C8DAEC7EBAD597D1CBD9772C852
SHA-256:	68F912A0ED073455B16DC5E894EFB02D40CBE933D2B7EB2C6DAC62DC25F82799
SHA-512:	D29AADB9A85086822F4C9450B8CBCA1EB67270A897C95930BD7063E33EE6095F6518E00CBC3BE1DA2182F5DBA2202346E1B4C0C54D58F11CF217D4E30C821631
Malicious:	false
Reputation:	low
Preview:	........ssh:notty...........................root............................192.168.2.13..............................................................................................................................................................................................................................................................$g........................................

Static File Info

General

File type:	ELF 64-bit LSB executable, MIPS, MIPS-III version 1 (SYSV), statically linked, Go BuildID=OV9vJ_v-2bk2dNGiGNDb/tPrAvdGyl8BJf7x33Esm/iDXarW29IcMj1bLws34V/gUJG7wBB8_mq3uT_Ccfc, stripped
Entropy (8bit):	5.374974260830418
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	linux_mips64el_softfloat.elf
File size:	5'963'776 bytes
MD5:	006fe86e7c4b72bd8625d87b69d5ffe6
SHA1:	f56e08fd9b40da25535fa6e38e1fc97914999bdd
SHA256:	a5ad53df08876877c86a4044b1662770570cfedb87f27ff15aa0c2f65650ed7e
SHA512:	31a03189512ca40f5ed45725bca728a63f8cfddea51068eadaeece42175e9c1a46250350840585f8f3a2eed090e65f023948ee65f90c349eebb15ab21116d11a
SSDEEP:	98304:Z9mVusEEQ4kVIb0IamIIkmrIGDeII8jOSPWo:bu8VIb0IamIIkmrIGDeII8HWo
TLSH:	CF560902EEC26E66C5CC037485FE979672507E085B951B2313A8EBA8397773DEF4684C
File Content Preview:	.ELF............................@.................. @.8...@.............@.......@.......@...............................................................d.......d...............................................@.0.....@.0.......................1.......2....

Static ELF Info

ELF header
Class:	ELF64
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:	0x8ffe0
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	0x30db40	0x0	0x6	AX	8
.rodata	PROGBITS	0x320000	0x310000	0xf9114	0x0	0x2	A	32
.shstrtab	STRTAB	0x0	0x409120	0xa5	0x0	0x0		1
.typelink	PROGBITS	0x4191e0	0x4091e0	0x17c8	0x0	0x2	A	32
.itablink	PROGBITS	0x41a9c0	0x40a9c0	0x948	0x0	0x2	A	32
.gosymtab	PROGBITS	0x41b308	0x40b308	0x0	0x0	0x2	A	1
.gopclntab	PROGBITS	0x41b320	0x40b320	0x14bc20	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	1.4752	0x4	R	0x10000
NOTE	0xf9c	0x10f9c	0x10f9c	0x64	0x64	5.3572	0x4	R	0x4	.note.go.buildid
LOAD	0x0	0x10000	0x10000	0x30eb40	0x30eb40	5.1362	0x5	R E	0x10000	.text .note.go.buildid
LOAD	0x310000	0x320000	0x320000	0x246f40	0x246f40	5.3992	0x4	R	0x10000	.rodata .typelink .itablink .gosymtab .gopclntab
LOAD	0x560000	0x570000	0x570000	0x41da0	0x81410	5.0495	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

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Nov 1, 2024 00:02:53.300358057 CET	43928	443	192.168.2.23	91.189.91.42
Nov 1, 2024 00:02:58.931689978 CET	42836	443	192.168.2.23	91.189.91.43
Nov 1, 2024 00:02:59.955355883 CET	42516	80	192.168.2.23	109.202.202.202
Nov 1, 2024 00:03:14.545411110 CET	43928	443	192.168.2.23	91.189.91.42
Nov 1, 2024 00:03:22.585812092 CET	33606	443	192.168.2.23	54.171.230.55
Nov 1, 2024 00:03:22.591968060 CET	443	33606	54.171.230.55	192.168.2.23
Nov 1, 2024 00:03:22.592056990 CET	33606	443	192.168.2.23	54.171.230.55
Nov 1, 2024 00:03:24.783896923 CET	42836	443	192.168.2.23	91.189.91.43
Nov 1, 2024 00:03:30.927160978 CET	42516	80	192.168.2.23	109.202.202.202
Nov 1, 2024 00:03:55.499670982 CET	43928	443	192.168.2.23	91.189.91.42
Nov 1, 2024 00:04:15.977229118 CET	42836	443	192.168.2.23	91.189.91.43

System Behavior

Analysis Process: linux_mips64el_softfloat.elf PID: 6229, Parent PID: 6154

General

Start time (UTC):	23:02:49
Start date (UTC):	31/10/2024
Path:	/tmp/linux_mips64el_softfloat.elf
Arguments:	/tmp/linux_mips64el_softfloat.elf
File size:	5822264 bytes
MD5 hash:	bba92fd1c51079d6ff2478396026936a

Chronological Activities

Analysis Process: dash PID: 6263, Parent PID: 4331

General

Start time (UTC):	23:03:21
Start date (UTC):	31/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 6263, Parent PID: 4331

General

Start time (UTC):	23:03:21
Start date (UTC):	31/10/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.LkCmKdQBBO /tmp/tmp.MMImyIRFhD /tmp/tmp.7Yjo1CueSR
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: dash PID: 6264, Parent PID: 4331

General

Start time (UTC):	23:03:21
Start date (UTC):	31/10/2024
Path:	/usr/bin/dash
Arguments:	-
File size:	129816 bytes
MD5 hash:	1e6b1c887c59a315edb7eb9a315fc84c

Chronological Activities

Analysis Process: rm PID: 6264, Parent PID: 4331

General

Start time (UTC):	23:03:21
Start date (UTC):	31/10/2024
Path:	/usr/bin/rm
Arguments:	rm -f /tmp/tmp.LkCmKdQBBO /tmp/tmp.MMImyIRFhD /tmp/tmp.7Yjo1CueSR
File size:	72056 bytes
MD5 hash:	aa2b5496fdbfd88e38791ab81f90b95b

Chronological Activities

Analysis Process: sshd PID: 6286, Parent PID: 936

General

Start time (UTC):	23:03:25
Start date (UTC):	31/10/2024
Path:	/usr/sbin/sshd
Arguments:	-
File size:	876328 bytes
MD5 hash:	dbca7a6bbf7bf57fedac243d4b2cb340

Chronological Activities

Analysis Process: sshd PID: 6286, Parent PID: 936

General

Start time (UTC):	23:03:25
Start date (UTC):	31/10/2024
Path:	/usr/sbin/sshd
Arguments:	/usr/sbin/sshd -D -R
File size:	876328 bytes
MD5 hash:	dbca7a6bbf7bf57fedac243d4b2cb340

Chronological Activities

Analysis Process: sshd PID: 6293, Parent PID: 936

General

Start time (UTC):	23:03:25
Start date (UTC):	31/10/2024
Path:	/usr/sbin/sshd
Arguments:	-
File size:	876328 bytes
MD5 hash:	dbca7a6bbf7bf57fedac243d4b2cb340

Chronological Activities

Analysis Process: sshd PID: 6293, Parent PID: 936

General

Start time (UTC):	23:03:25
Start date (UTC):	31/10/2024
Path:	/usr/sbin/sshd
Arguments:	/usr/sbin/sshd -D -R
File size:	876328 bytes
MD5 hash:	dbca7a6bbf7bf57fedac243d4b2cb340

Chronological Activities

Analysis Process: sshd PID: 6294, Parent PID: 6293

General

Start time (UTC):	23:03:25
Start date (UTC):	31/10/2024
Path:	/usr/sbin/sshd
Arguments:	-
File size:	876328 bytes
MD5 hash:	dbca7a6bbf7bf57fedac243d4b2cb340

Chronological Activities

Analysis Process: sshd PID: 6297, Parent PID: 936

General

Start time (UTC):	23:03:28
Start date (UTC):	31/10/2024
Path:	/usr/sbin/sshd
Arguments:	-
File size:	876328 bytes
MD5 hash:	dbca7a6bbf7bf57fedac243d4b2cb340

Chronological Activities

Analysis Process: sshd PID: 6297, Parent PID: 936

General

Start time (UTC):	23:03:28
Start date (UTC):	31/10/2024
Path:	/usr/sbin/sshd
Arguments:	/usr/sbin/sshd -D -R
File size:	876328 bytes
MD5 hash:	dbca7a6bbf7bf57fedac243d4b2cb340

Chronological Activities

Analysis Process: sshd PID: 6298, Parent PID: 6297

General

Start time (UTC):	23:03:28
Start date (UTC):	31/10/2024
Path:	/usr/sbin/sshd
Arguments:	-
File size:	876328 bytes
MD5 hash:	dbca7a6bbf7bf57fedac243d4b2cb340

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_mips64el_softfloat.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Warnings

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

/var/log/btmp

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: linux_mips64el_softfloat.elf PID: 6229, Parent PID: 6154

General

Chronological Activities

Analysis Process: dash PID: 6263, Parent PID: 4331

General

Chronological Activities

Analysis Process: rm PID: 6263, Parent PID: 4331

General

Chronological Activities

Analysis Process: dash PID: 6264, Parent PID: 4331

General

Chronological Activities

Analysis Process: rm PID: 6264, Parent PID: 4331

General

Chronological Activities

Analysis Process: sshd PID: 6286, Parent PID: 936

General

Chronological Activities

Analysis Process: sshd PID: 6286, Parent PID: 936

General

Linux Analysis Report
linux_mips64el_softfloat.elf