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Linux Analysis Report
arm.elf

Overview

General Information

Sample name:arm.elf
Analysis ID:1541685
MD5:ec869a125d00ee57bfc7767c0a51fddf
SHA1:7e8d0f337fce03ca868641c6bd7e63d15553276d
SHA256:b6eb5b4e461cddae47439b32ce4e13b84abe0c1b8adf87d32221db00ff2924a7
Tags:elfuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100
Whitelisted:false

Signatures

Multi AV Scanner detection for submitted file
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

Joe Sandbox version:41.0.0 Charoite
Analysis ID:1541685
Start date and time:2024-10-25 01:58:04 +02:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 31s
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:arm.elf
Detection:MAL
Classification:mal48.linELF@0/0@0/0
Command:/tmp/arm.elf
PID:6232
Exit Code:0
Exit Code Info:
Killed:False
Standard Output:

Standard Error:
  • system is lnxubuntu20
  • arm.elf (PID: 6232, Parent: 6155, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm.elf
  • dash New Fork (PID: 6270, Parent: 4331)
  • rm (PID: 6270, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.guAAbcHO6N /tmp/tmp.A0Y4Rkcdj4 /tmp/tmp.ryPMB3Bbgr
  • dash New Fork (PID: 6271, Parent: 4331)
  • rm (PID: 6271, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.guAAbcHO6N /tmp/tmp.A0Y4Rkcdj4 /tmp/tmp.ryPMB3Bbgr
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: arm.elfReversingLabs: Detection: 13%
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknownTCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknownTCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknownTCP traffic detected without corresponding DNS query: 54.171.230.55
Source: unknownTCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknownNetwork traffic detected: HTTP traffic on port 443 -> 33606
Source: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 33606 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 42836 -> 443
Source: ELF static info symbol of initial sample.symtab present: no
Source: classification engineClassification label: mal48.linELF@0/0@0/0
Source: /usr/bin/dash (PID: 6270)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.guAAbcHO6N /tmp/tmp.A0Y4Rkcdj4 /tmp/tmp.ryPMB3BbgrJump to behavior
Source: /usr/bin/dash (PID: 6271)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.guAAbcHO6N /tmp/tmp.A0Y4Rkcdj4 /tmp/tmp.ryPMB3BbgrJump to behavior
Source: /tmp/arm.elf (PID: 6232)Queries kernel information via 'uname': Jump to behavior
Source: arm.elf, 6232.1.0000562274b0b000.0000562274c39000.rw-.sdmpBinary or memory string: t"V!/etc/qemu-binfmt/arm
Source: arm.elf, 6232.1.00007fffc432b000.00007fffc434c000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/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/arm.elf
Source: arm.elf, 6232.1.0000562274b0b000.0000562274c39000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: arm.elf, 6232.1.00007fffc432b000.00007fffc434c000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath Interception1
File Deletion
OS Credential Dumping11
Security Software Discovery
Remote ServicesData from Local System1
Encrypted Channel
Exfiltration Over Other Network MediumAbuse Accessibility Features
CredentialsDomainsDefault AccountsScheduled Task/JobBoot or Logon Initialization ScriptsBoot or Logon Initialization ScriptsRootkitLSASS MemoryApplication Window DiscoveryRemote Desktop ProtocolData from Removable Media1
Application Layer Protocol
Exfiltration Over BluetoothNetwork Denial of Service
No configs have been found
Hide Legend

Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Number of created Files
  • Is malicious
  • Internet
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1541685 Sample: arm.elf Startdate: 25/10/2024 Architecture: LINUX Score: 48 12 109.202.202.202, 80 INIT7CH Switzerland 2->12 14 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->14 16 2 other IPs or domains 2->16 18 Multi AV Scanner detection for submitted file 2->18 6 dash rm 2->6         started        8 dash rm 2->8         started        10 arm.elf 2->10         started        signatures3 process4
SourceDetectionScannerLabelLink
arm.elf13%ReversingLabs
No Antivirus matches
No Antivirus matches
No Antivirus matches
No contacted domains info
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs
IPDomainCountryFlagASNASN NameMalicious
54.171.230.55
unknownUnited States
16509AMAZON-02USfalse
109.202.202.202
unknownSwitzerland
13030INIT7CHfalse
91.189.91.43
unknownUnited Kingdom
41231CANONICAL-ASGBfalse
91.189.91.42
unknownUnited Kingdom
41231CANONICAL-ASGBfalse
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                                                              No context
                                                              No created / dropped files found
                                                              File type:ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, stripped
                                                              Entropy (8bit):5.847023992610634
                                                              TrID:
                                                              • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                                              File name:arm.elf
                                                              File size:38'024 bytes
                                                              MD5:ec869a125d00ee57bfc7767c0a51fddf
                                                              SHA1:7e8d0f337fce03ca868641c6bd7e63d15553276d
                                                              SHA256:b6eb5b4e461cddae47439b32ce4e13b84abe0c1b8adf87d32221db00ff2924a7
                                                              SHA512:329ccaac14d5c449767cc587f2c62461448aad7318218fe2b5c57084add043064a871161d8ceb1335af5f60c0fd903186bd12a34e28bf203b927102e4aa002a4
                                                              SSDEEP:768:VCQF+D8SJ+JdPHU6tlEDFQRvBXzrS2MBwRq6EefxUnv6q:rskV06cFeBXvpMBrefxOv
                                                              TLSH:9203E7C5B8845B13C5C551BBFF1E828DBA3B471CE1FA73466A2A6F2133D74160E3A246
                                                              File Content Preview:.ELF...a..........(.........4...........4. ...(.....................t...t...........................l...P&..........Q.td..................................-...L."....!..........0@-.\P...0....S.0...P@...0... ....R......0...0...........0... ....R..... 0....S

                                                              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:0x8190
                                                              Flags:0x202
                                                              ELF Header Size:52
                                                              Program Header Offset:52
                                                              Program Header Size:32
                                                              Number of Program Headers:3
                                                              Section Header Offset:37584
                                                              Section Header Size:40
                                                              Number of Section Headers:11
                                                              Header String Table Index:10
                                                              NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                                                              NULL0x00x00x00x00x0000
                                                              .initPROGBITS0x80940x940x180x00x6AX004
                                                              .textPROGBITS0x80b00xb00x87e40x00x6AX0016
                                                              .finiPROGBITS0x108940x88940x140x00x6AX004
                                                              .rodataPROGBITS0x108a80x88a80x4cc0x00x2A004
                                                              .ctorsPROGBITS0x190040x90040x80x00x3WA004
                                                              .dtorsPROGBITS0x1900c0x900c0x80x00x3WA004
                                                              .dataPROGBITS0x190180x90180x2580x00x3WA004
                                                              .bssNOBITS0x192700x92700x23e40x00x3WA004
                                                              .ARM.attributesARM_ATTRIBUTES0x00x92700x100x00x0001
                                                              .shstrtabSTRTAB0x00x92800x4e0x00x0001
                                                              TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                                                              LOAD0x00x80000x80000x8d740x8d745.94700x5R E0x8000.init .text .fini .rodata
                                                              LOAD0x90040x190040x190040x26c0x26503.42710x6RW 0x8000.ctors .dtors .data .bss
                                                              GNU_STACK0x00x00x00x00x00.00000x7RWE0x4
                                                              TimestampSource PortDest PortSource IPDest IP
                                                              Oct 25, 2024 01:58:51.138452053 CEST43928443192.168.2.2391.189.91.42
                                                              Oct 25, 2024 01:58:56.769778013 CEST42836443192.168.2.2391.189.91.43
                                                              Oct 25, 2024 01:58:57.537862062 CEST4251680192.168.2.23109.202.202.202
                                                              Oct 25, 2024 01:59:11.616080999 CEST43928443192.168.2.2391.189.91.42
                                                              Oct 25, 2024 01:59:23.902209044 CEST42836443192.168.2.2391.189.91.43
                                                              Oct 25, 2024 01:59:26.308809996 CEST33606443192.168.2.2354.171.230.55
                                                              Oct 25, 2024 01:59:26.314555883 CEST4433360654.171.230.55192.168.2.23
                                                              Oct 25, 2024 01:59:26.314634085 CEST33606443192.168.2.2354.171.230.55
                                                              Oct 25, 2024 01:59:27.997428894 CEST4251680192.168.2.23109.202.202.202
                                                              Oct 25, 2024 01:59:52.570262909 CEST43928443192.168.2.2391.189.91.42

                                                              System Behavior

                                                              Start time (UTC):23:58:51
                                                              Start date (UTC):24/10/2024
                                                              Path:/tmp/arm.elf
                                                              Arguments:/tmp/arm.elf
                                                              File size:4956856 bytes
                                                              MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

                                                              Start time (UTC):23:59:25
                                                              Start date (UTC):24/10/2024
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):23:59:25
                                                              Start date (UTC):24/10/2024
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.guAAbcHO6N /tmp/tmp.A0Y4Rkcdj4 /tmp/tmp.ryPMB3Bbgr
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                                              Start time (UTC):23:59:25
                                                              Start date (UTC):24/10/2024
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):23:59:25
                                                              Start date (UTC):24/10/2024
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.guAAbcHO6N /tmp/tmp.A0Y4Rkcdj4 /tmp/tmp.ryPMB3Bbgr
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b