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Linux Analysis Report
skid.arm.elf

Overview

General Information

Sample name:	skid.arm.elf
Analysis ID:	1427745
MD5:	e7b4850c359b3f0f0533ee006d8f94db
SHA1:	bfd586e31122c1502f02db0161bc849490c39737
SHA256:	9a1e3e788306a30291cab8bf763b78f65ab8c9fc728145ad65cde2ccd0e0c103
Infos:

Detection

Score:	48
Range:	0 - 100
Whitelisted:	false

Signatures

Multi AV Scanner detection for submitted file

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

Analysis Advice

Static ELF header machine description suggests that the sample might not execute correctly on this machine.

All HTTP servers contacted by the sample do not answer. The sample is likely an old dropper which does no longer work.

Non-zero exit code suggests an error during the execution. Lookup the error code for hints.

Static ELF header machine description suggests that the sample might only run correctly on MIPS or ARM architectures.

General Information

Joe Sandbox version:	40.0.0 Tourmaline
Analysis ID:	1427745
Start date and time:	2024-04-18 03:51:04 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 10m 42s
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:	skid.arm.elf
Detection:	MAL
Classification:	mal48.linELF@0/0@0/0
Cookbook Comments:	Analysis time extended to 480s due to sleep detection in submitted sample

Runtime Messages

Command:	/tmp/skid.arm.elf
PID:	6240
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

skid.arm.elf (PID: 6240, Parent: 6160, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/skid.arm.elf

cleanup

Yara Signatures

⊘No yara matches

Snort Signatures

⊘No Snort 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: skid.arm.elf

Virustotal: Detection: 8%

Perma Link

Source: global traffic	TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global traffic	TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic	TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80

Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42

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

Source: classification engine

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

Source: skid.arm.elf	ELF static info symbol of initial sample: libc/sysdeps/linux/arm/crt1.S
Source: skid.arm.elf	ELF static info symbol of initial sample: libc/sysdeps/linux/arm/crti.S
Source: skid.arm.elf	ELF static info symbol of initial sample: libc/sysdeps/linux/arm/crtn.S

Source: /tmp/skid.arm.elf (PID: 6240)

Queries kernel information via 'uname':

Jump to behavior

Source: skid.arm.elf, 6240.1.00007ffde6b1b000.00007ffde6b3c000.rw-.sdmp	Binary or memory string: qemu: %s: %s
Source: skid.arm.elf, 6240.1.00007ffde6b1b000.00007ffde6b3c000.rw-.sdmp	Binary or memory string: leqemu: %s: %s
Source: skid.arm.elf, 6240.1.0000555d3b697000.0000555d3b7c5000.rw-.sdmp	Binary or memory string: pi;]Urg.qemu.gdb.arm.sys.regs">
Source: skid.arm.elf, 6240.1.0000555d3b697000.0000555d3b7c5000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: skid.arm.elf, 6240.1.00007ffde6b1b000.00007ffde6b3c000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: skid.arm.elf, 6240.1.00007ffde6b1b000.00007ffde6b3c000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/skid.arm.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/skid.arm.elf
Source: skid.arm.elf, 6240.1.0000555d3b697000.0000555d3b7c5000.rw-.sdmp	Binary or memory string: j;]U!/etc/qemu-binfmt/arm
Source: skid.arm.elf, 6240.1.0000555d3b697000.0000555d3b7c5000.rw-.sdmp	Binary or memory string: rg.qemu.gdb.arm.sys.regs">

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

Screenshots

Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
skid.arm.elf	8%	ReversingLabs	Linux.Trojan.ReverseShell
skid.arm.elf	8%	Virustotal		Browse

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

⊘No contacted domains info

World Map of Contacted IPs

No. of IPs < 25%
25% < No. of IPs < 50%
50% < No. of IPs < 75%
75% < No. of IPs

Public IPs

IP	Domain	Country	ASN	ASN Name	Malicious
109.202.202.202	unknown	Switzerland	13030	INIT7CH	false
91.189.91.43	unknown	United Kingdom	41231	CANONICAL-ASGB	false
91.189.91.42	unknown	United Kingdom	41231	CANONICAL-ASGB	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
109.202.202.202	dQV40zAvGT.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	YgpPblX7Ct.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	epLN92K8RM.elf	Get hash	malicious	Mirai	Browse
	LJTtnwewUQ.elf	Get hash	malicious	Mirai	Browse
	NvmCe2XrqN.elf	Get hash	malicious	Mirai	Browse
	FwLad7Fxwv.elf	Get hash	malicious	Mirai	Browse
	aNeRrtorRm.elf	Get hash	malicious	Mirai	Browse
	8BNqPPgBFn.elf	Get hash	malicious	Mirai	Browse
	yVsyTd2tDQ.elf	Get hash	malicious	Mirai	Browse
	nD1z4HgXaM.elf	Get hash	malicious	Gafgyt, Mirai	Browse
91.189.91.43	YgpPblX7Ct.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	epLN92K8RM.elf	Get hash	malicious	Mirai	Browse
	LJTtnwewUQ.elf	Get hash	malicious	Mirai	Browse
	NvmCe2XrqN.elf	Get hash	malicious	Mirai	Browse
	FwLad7Fxwv.elf	Get hash	malicious	Mirai	Browse
	aNeRrtorRm.elf	Get hash	malicious	Mirai	Browse
	8BNqPPgBFn.elf	Get hash	malicious	Mirai	Browse
	yVsyTd2tDQ.elf	Get hash	malicious	Mirai	Browse
	nD1z4HgXaM.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	wUxE90cdjt.elf	Get hash	malicious	Gafgyt, Mirai	Browse
91.189.91.42	dQV40zAvGT.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	YgpPblX7Ct.elf	Get hash	malicious	Gafgyt, Mirai	Browse
	epLN92K8RM.elf	Get hash	malicious	Mirai	Browse
	LJTtnwewUQ.elf	Get hash	malicious	Mirai	Browse
	NvmCe2XrqN.elf	Get hash	malicious	Mirai	Browse
	FwLad7Fxwv.elf	Get hash	malicious	Mirai	Browse
	aNeRrtorRm.elf	Get hash	malicious	Mirai	Browse
	8BNqPPgBFn.elf	Get hash	malicious	Mirai	Browse
	yVsyTd2tDQ.elf	Get hash	malicious	Mirai	Browse
	nD1z4HgXaM.elf	Get hash	malicious	Gafgyt, Mirai	Browse

Domains

⊘No context

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	dQV40zAvGT.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	YgpPblX7Ct.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	epLN92K8RM.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	LJTtnwewUQ.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	NvmCe2XrqN.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	AkV7DALWTe.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	FwLad7Fxwv.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	n3l6rOHrCy.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	aNeRrtorRm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	8BNqPPgBFn.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
CANONICAL-ASGB	dQV40zAvGT.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	YgpPblX7Ct.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	epLN92K8RM.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	LJTtnwewUQ.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	NvmCe2XrqN.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	AkV7DALWTe.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	FwLad7Fxwv.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	n3l6rOHrCy.elf	Get hash	malicious	Mirai	Browse	185.125.190.26
	aNeRrtorRm.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
	8BNqPPgBFn.elf	Get hash	malicious	Mirai	Browse	91.189.91.42
INIT7CH	dQV40zAvGT.elf	Get hash	malicious	Gafgyt, Mirai	Browse	109.202.202.202
	YgpPblX7Ct.elf	Get hash	malicious	Gafgyt, Mirai	Browse	109.202.202.202
	epLN92K8RM.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	LJTtnwewUQ.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	NvmCe2XrqN.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	FwLad7Fxwv.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	aNeRrtorRm.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	8BNqPPgBFn.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	yVsyTd2tDQ.elf	Get hash	malicious	Mirai	Browse	109.202.202.202
	nD1z4HgXaM.elf	Get hash	malicious	Gafgyt, 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, ARM, version 1 (ARM), dynamically linked, interpreter /lib/ld-uClibc.so.0, not stripped
Entropy (8bit):	4.383021780003098
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	skid.arm.elf
File size:	5'677 bytes
MD5:	e7b4850c359b3f0f0533ee006d8f94db
SHA1:	bfd586e31122c1502f02db0161bc849490c39737
SHA256:	9a1e3e788306a30291cab8bf763b78f65ab8c9fc728145ad65cde2ccd0e0c103
SHA512:	6d0afb5a18878726e1f8f954b52d25589a5c62b6a2ec619b4be0b8ee840035f268a346a5928b3a4b69960cdac16353ee9bd446149aa48863438d2b4f588b157e
SSDEEP:	96:CAXuHBuYrTt/GRURVH/BZQ7zpkAveed0MSc:CSWBuUomVVy0MSc
TLSH:	D0C1124A96D28D2BDCD1233D62DF4F6C7331E88666164727930C98A06E332D55E3374E
File Content Preview:	.ELF...a..........(.....(...4...........4. ...(.........4...4...4...................................................................................................................................................Q.td............................/lib/ld-uCl

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	ARM
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	ARM - ABI
ABI Version:	0
Entry Point Address:	0x8528
Flags:	0x202
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	6
Section Header Offset:	2324
Section Header Size:	40
Number of Section Headers:	23
Header String Table Index:	20

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Link	Info	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0	0	0
.interp	PROGBITS	0x80f4	0xf4	0x14	0x0	0x2	A	0	0	1
.hash	HASH	0x8108	0x108	0x98	0x4	0x2	A	3	0	4
.dynsym	DYNSYM	0x81a0	0x1a0	0x130	0x10	0x2	A	4	1	4
.dynstr	STRTAB	0x82d0	0x2d0	0x98	0x0	0x2	A	0	0	1
.rel.plt	REL	0x8368	0x368	0x48	0x8	0x2	A	3	7	4
.init	PROGBITS	0x83b0	0x3b0	0x18	0x0	0x6	AX	0	0	4
.plt	PROGBITS	0x83c8	0x3c8	0x80	0x4	0x6	AX	0	0	4
.text	PROGBITS	0x8448	0x448	0x260	0x0	0x6	AX	0	0	4
.fini	PROGBITS	0x86a8	0x6a8	0x14	0x0	0x6	AX	0	0	4
.rodata	PROGBITS	0x86bc	0x6bc	0x20	0x0	0x2	A	0	0	4
.eh_frame	PROGBITS	0x86dc	0x6dc	0x4	0x0	0x2	A	0	0	4
.ctors	PROGBITS	0x106e0	0x6e0	0x8	0x0	0x3	WA	0	0	4
.dtors	PROGBITS	0x106e8	0x6e8	0x8	0x0	0x3	WA	0	0	4
.jcr	PROGBITS	0x106f0	0x6f0	0x4	0x0	0x3	WA	0	0	4
.dynamic	DYNAMIC	0x106f4	0x6f4	0x98	0x8	0x3	WA	4	0	4
.got	PROGBITS	0x1078c	0x78c	0x30	0x4	0x3	WA	0	0	4
.data	PROGBITS	0x107bc	0x7bc	0x14	0x0	0x3	WA	0	0	4
.bss	NOBITS	0x107d0	0x7d0	0x1c	0x0	0x3	WA	0	0	4
.comment	PROGBITS	0x0	0x7d0	0xa6	0x0	0x0		0	0	1
.shstrtab	STRTAB	0x0	0x876	0x9b	0x0	0x0		0	0	1
.symtab	SYMTAB	0x0	0xcac	0x6a0	0x10	0x0		22	79	4
.strtab	STRTAB	0x0	0x134c	0x2e1	0x0	0x0		0	0	1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Prog Interpreter	Section Mappings
PHDR	0x34	0x8034	0x8034	0xc0	0xc0	2.1327	0x5	R E	0x4
INTERP	0xf4	0x80f4	0x80f4	0x14	0x14	3.6842	0x4	R	0x1	/lib/ld-uClibc.so.0	.interp
LOAD	0x0	0x8000	0x8000	0x6e0	0x6e0	5.0125	0x5	R E	0x8000		.interp .hash .dynsym .dynstr .rel.plt .init .plt .text .fini .rodata .eh_frame
LOAD	0x6e0	0x106e0	0x106e0	0xf0	0x10c	2.0198	0x6	RW	0x8000		.ctors .dtors .jcr .dynamic .got .data .bss
DYNAMIC	0x6f4	0x106f4	0x106f4	0x98	0x98	1.7924	0x6	RW	0x4		.dynamic
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Dynamic Tags

Type	Meta	Value	Tag
DT_NEEDED	sharedlib	libc.so.0	0x1
DT_INIT	value	0x83b0	0xc
DT_FINI	value	0x86a8	0xd
DT_HASH	value	0x8108	0x4
DT_STRTAB	value	0x82d0	0x5
DT_SYMTAB	value	0x81a0	0x6
DT_STRSZ	bytes	152	0xa
DT_SYMENT	bytes	16	0xb
DT_DEBUG	value	0x0	0x15
DT_PLTGOT	value	0x1078c	0x3
DT_PLTRELSZ	bytes	72	0x2
DT_PLTREL	pltrel	DT_REL	0x14
DT_JMPREL	value	0x8368	0x17
DT_NULL	value	0x0	0x0

Symbols

Name	Section Name	Value	Size	Symbol Type	Symbol Bind	Symbol Visibility	Ndx
	.dynsym	0x0	0	NOTYPE	<unknown>	DEFAULT	SHN_UNDEF
__bss_end__	.dynsym	0x107ec	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__bss_start	.dynsym	0x107d0	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__bss_start__	.dynsym	0x107d0	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__data_start	.dynsym	0x107bc	0	NOTYPE	<unknown>	DEFAULT	17
__end__	.dynsym	0x107ec	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__uClibc_main	.dynsym	0x8430	488	FUNC	<unknown>	DEFAULT	SHN_UNDEF
_bss_end__	.dynsym	0x107ec	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
_edata	.dynsym	0x107d0	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
_end	.dynsym	0x107ec	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
_start	.dynsym	0x8528	80	FUNC	<unknown>	DEFAULT	8
abort	.dynsym	0x8418	352	FUNC	<unknown>	DEFAULT	SHN_UNDEF
connect	.dynsym	0x83dc	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
dup2	.dynsym	0x8400	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
execve	.dynsym	0x83f4	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
htons	.dynsym	0x843c	20	FUNC	<unknown>	DEFAULT	SHN_UNDEF
inet_addr	.dynsym	0x8424	36	FUNC	<unknown>	DEFAULT	SHN_UNDEF
socket	.dynsym	0x840c	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
usleep	.dynsym	0x83e8	76	FUNC	<unknown>	DEFAULT	SHN_UNDEF
	.symtab	0x0	0	NOTYPE	<unknown>	DEFAULT	SHN_UNDEF
	.symtab	0x80f4	0	SECTION	<unknown>	DEFAULT	1
	.symtab	0x8108	0	SECTION	<unknown>	DEFAULT	2
	.symtab	0x81a0	0	SECTION	<unknown>	DEFAULT	3
	.symtab	0x82d0	0	SECTION	<unknown>	DEFAULT	4
	.symtab	0x8368	0	SECTION	<unknown>	DEFAULT	5
	.symtab	0x83b0	0	SECTION	<unknown>	DEFAULT	6
	.symtab	0x83c8	0	SECTION	<unknown>	DEFAULT	7
	.symtab	0x8448	0	SECTION	<unknown>	DEFAULT	8
	.symtab	0x86a8	0	SECTION	<unknown>	DEFAULT	9
	.symtab	0x86bc	0	SECTION	<unknown>	DEFAULT	10
	.symtab	0x86dc	0	SECTION	<unknown>	DEFAULT	11
	.symtab	0x106e0	0	SECTION	<unknown>	DEFAULT	12
	.symtab	0x106e8	0	SECTION	<unknown>	DEFAULT	13
	.symtab	0x106f0	0	SECTION	<unknown>	DEFAULT	14
	.symtab	0x106f4	0	SECTION	<unknown>	DEFAULT	15
	.symtab	0x1078c	0	SECTION	<unknown>	DEFAULT	16
	.symtab	0x107bc	0	SECTION	<unknown>	DEFAULT	17
	.symtab	0x107d0	0	SECTION	<unknown>	DEFAULT	18
	.symtab	0x0	0	SECTION	<unknown>	DEFAULT	19
	.symtab	0x0	0	SECTION	<unknown>	DEFAULT	20
	.symtab	0x0	0	SECTION	<unknown>	DEFAULT	21
	.symtab	0x0	0	SECTION	<unknown>	DEFAULT	22
$a	.symtab	0x83b0	0	NOTYPE	<unknown>	DEFAULT	6
$a	.symtab	0x86a8	0	NOTYPE	<unknown>	DEFAULT	9
$a	.symtab	0x8448	0	NOTYPE	<unknown>	DEFAULT	8
$a	.symtab	0x84c0	0	NOTYPE	<unknown>	DEFAULT	8
$a	.symtab	0x86b4	0	NOTYPE	<unknown>	DEFAULT	9
$a	.symtab	0x8520	0	NOTYPE	<unknown>	DEFAULT	8
$a	.symtab	0x83bc	0	NOTYPE	<unknown>	DEFAULT	6
$a	.symtab	0x866c	0	NOTYPE	<unknown>	DEFAULT	8
$a	.symtab	0x86a0	0	NOTYPE	<unknown>	DEFAULT	8
$a	.symtab	0x83c0	0	NOTYPE	<unknown>	DEFAULT	6
$a	.symtab	0x83c4	0	NOTYPE	<unknown>	DEFAULT	6
$a	.symtab	0x86b8	0	NOTYPE	<unknown>	DEFAULT	9
$a	.symtab	0x8528	0	NOTYPE	<unknown>	DEFAULT	8
$a	.symtab	0x8564	0	NOTYPE	<unknown>	DEFAULT	8
$a	.symtab	0x864c	0	NOTYPE	<unknown>	DEFAULT	8
$d	.symtab	0x106e0	0	NOTYPE	<unknown>	DEFAULT	12
$d	.symtab	0x106e8	0	NOTYPE	<unknown>	DEFAULT	13
$d	.symtab	0x107c4	0	NOTYPE	<unknown>	DEFAULT	17
$d	.symtab	0x84b0	0	NOTYPE	<unknown>	DEFAULT	8
$d	.symtab	0x850c	0	NOTYPE	<unknown>	DEFAULT	8
$d	.symtab	0x869c	0	NOTYPE	<unknown>	DEFAULT	8
$d	.symtab	0x107c8	0	NOTYPE	<unknown>	DEFAULT	17
$d	.symtab	0x8558	0	NOTYPE	<unknown>	DEFAULT	8
$d	.symtab	0x86c4	0	NOTYPE	<unknown>	DEFAULT	10
$d	.symtab	0x8640	0	NOTYPE	<unknown>	DEFAULT	8
C.1.3111	.symtab	0x86c4	8	OBJECT	<unknown>	DEFAULT	10
_DYNAMIC	.symtab	0x106f4	0	OBJECT	<unknown>	HIDDEN	15
_GLOBAL_OFFSET_TABLE_	.symtab	0x1078c	0	OBJECT	<unknown>	HIDDEN	16
_Jv_RegisterClasses	.symtab	0x0	0	NOTYPE	<unknown>	DEFAULT	SHN_UNDEF
__CTOR_END__	.symtab	0x106e4	0	OBJECT	<unknown>	DEFAULT	12
__CTOR_LIST__	.symtab	0x106e0	0	OBJECT	<unknown>	DEFAULT	12
__DTOR_END__	.symtab	0x106ec	0	OBJECT	<unknown>	DEFAULT	13
__DTOR_LIST__	.symtab	0x106e8	0	OBJECT	<unknown>	DEFAULT	13
__EH_FRAME_BEGIN__	.symtab	0x86dc	0	OBJECT	<unknown>	DEFAULT	11
__FRAME_END__	.symtab	0x86dc	0	OBJECT	<unknown>	DEFAULT	11
__JCR_END__	.symtab	0x106f0	0	OBJECT	<unknown>	DEFAULT	14
__JCR_LIST__	.symtab	0x106f0	0	OBJECT	<unknown>	DEFAULT	14
__bss_end__	.symtab	0x107ec	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__bss_start	.symtab	0x107d0	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__bss_start__	.symtab	0x107d0	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__data_start	.symtab	0x107bc	0	NOTYPE	<unknown>	DEFAULT	17
__deregister_frame_info	.symtab	0x0	0	NOTYPE	<unknown>	DEFAULT	SHN_UNDEF
__do_global_ctors_aux	.symtab	0x866c	0	FUNC	<unknown>	DEFAULT	8
__do_global_dtors_aux	.symtab	0x8448	0	FUNC	<unknown>	DEFAULT	8
__dso_handle	.symtab	0x107c0	0	OBJECT	<unknown>	HIDDEN	17
__end__	.symtab	0x107ec	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
__register_frame_info	.symtab	0x0	0	NOTYPE	<unknown>	DEFAULT	SHN_UNDEF
__uClibc_main	.symtab	0x8430	488	FUNC	<unknown>	DEFAULT	SHN_UNDEF
_bss_end__	.symtab	0x107ec	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
_edata	.symtab	0x107d0	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
_end	.symtab	0x107ec	0	NOTYPE	<unknown>	DEFAULT	SHN_ABS
_fini	.symtab	0x86a8	4	FUNC	<unknown>	DEFAULT	9
_init	.symtab	0x83b0	4	FUNC	<unknown>	DEFAULT	6
_start	.symtab	0x8528	80	FUNC	<unknown>	DEFAULT	8
abort	.symtab	0x8418	352	FUNC	<unknown>	DEFAULT	SHN_UNDEF
call___do_global_ctors_aux	.symtab	0x86a0	0	FUNC	<unknown>	DEFAULT	8
call___do_global_dtors_aux	.symtab	0x84c0	0	FUNC	<unknown>	DEFAULT	8
call_frame_dummy	.symtab	0x8520	0	FUNC	<unknown>	DEFAULT	8
completed.2555	.symtab	0x107d0	1	OBJECT	<unknown>	DEFAULT	18
connect	.symtab	0x83dc	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
crtstuff.c	.symtab	0x0	0	FILE	<unknown>	DEFAULT	SHN_ABS
crtstuff.c	.symtab	0x0	0	FILE	<unknown>	DEFAULT	SHN_ABS
data_start	.symtab	0x107c8	0	NOTYPE	<unknown>	DEFAULT	17
dup2	.symtab	0x8400	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
execve	.symtab	0x83f4	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
force_to_data	.symtab	0x107bc	0	OBJECT	<unknown>	DEFAULT	17
force_to_data	.symtab	0x107cc	0	OBJECT	<unknown>	DEFAULT	17
frame_dummy	.symtab	0x84c8	0	FUNC	<unknown>	DEFAULT	8
htons	.symtab	0x843c	20	FUNC	<unknown>	DEFAULT	SHN_UNDEF
inet_addr	.symtab	0x8424	36	FUNC	<unknown>	DEFAULT	SHN_UNDEF
initfini.c	.symtab	0x0	0	FILE	<unknown>	DEFAULT	SHN_ABS
initfini.c	.symtab	0x0	0	FILE	<unknown>	DEFAULT	SHN_ABS
libc/sysdeps/linux/arm/crt1.S	.symtab	0x0	0	FILE	<unknown>	DEFAULT	SHN_ABS
libc/sysdeps/linux/arm/crti.S	.symtab	0x0	0	FILE	<unknown>	DEFAULT	SHN_ABS
libc/sysdeps/linux/arm/crtn.S	.symtab	0x0	0	FILE	<unknown>	DEFAULT	SHN_ABS
main	.symtab	0x864c	32	FUNC	<unknown>	DEFAULT	8
main.c	.symtab	0x0	0	FILE	<unknown>	DEFAULT	SHN_ABS
object.2636	.symtab	0x107d4	24	OBJECT	<unknown>	DEFAULT	18
p.2553	.symtab	0x107c4	0	OBJECT	<unknown>	DEFAULT	17
rev_shell.c	.symtab	0x0	0	FILE	<unknown>	DEFAULT	SHN_ABS
shell	.symtab	0x8564	232	FUNC	<unknown>	DEFAULT	8
socket	.symtab	0x840c	44	FUNC	<unknown>	DEFAULT	SHN_UNDEF
usleep	.symtab	0x83e8	76	FUNC	<unknown>	DEFAULT	SHN_UNDEF

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 18, 2024 03:51:52.246522903 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 18, 2024 03:51:57.621834993 CEST	42836	443	192.168.2.23	91.189.91.43
Apr 18, 2024 03:51:58.389694929 CEST	42516	80	192.168.2.23	109.202.202.202
Apr 18, 2024 03:52:12.468211889 CEST	43928	443	192.168.2.23	91.189.91.42
Apr 18, 2024 03:52:24.754456043 CEST	42836	443	192.168.2.23	91.189.91.43
Apr 18, 2024 03:52:28.849968910 CEST	42516	80	192.168.2.23	109.202.202.202
Apr 18, 2024 03:52:53.422574043 CEST	43928	443	192.168.2.23	91.189.91.42

System Behavior

Analysis Process: skid.arm.elf PID: 6240, Parent PID: 6160

General

Start time (UTC):	01:51:52
Start date (UTC):	18/04/2024
Path:	/tmp/skid.arm.elf
Arguments:	/tmp/skid.arm.elf
File size:	4956856 bytes
MD5 hash:	5ebfcae4fe2471fcc5695c2394773ff1

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 skid.arm.elf

Overview

General Information

Detection

Signatures

Classification

Analysis Advice

General Information

Runtime Messages

Process Tree

Yara Signatures

Snort Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Malware Analysis System Evasion

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Screenshots

Thumbnails

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

World Map of Contacted IPs

Public IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Dynamic Tags

Symbols

Network Behavior

Network Port Distribution

TCP Packets

System Behavior

Analysis Process: skid.arm.elf PID: 6240, Parent PID: 6160

General

Chronological Activities

Linux Analysis Report
skid.arm.elf