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Linux Analysis Report
arm5.elf

Overview

General Information

Sample name:arm5.elf
Analysis ID:1542672
MD5:b899844cddaafc13618a6f364b66ddb9
SHA1:16c5105040d33d01dd95539b5a8901c93cfae65d
SHA256:37d106fb16860543d9ad64dcac76d12911612f170823825ee9b5df6b4a64a580
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:1542672
Start date and time:2024-10-26 06:07:09 +02:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 33s
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:arm5.elf
Detection:MAL
Classification:mal48.linELF@0/0@0/0
Command:/tmp/arm5.elf
PID:6208
Exit Code:0
Exit Code Info:
Killed:False
Standard Output:

Standard Error:
  • system is lnxubuntu20
  • arm5.elf (PID: 6208, Parent: 6127, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm5.elf
  • dash New Fork (PID: 6240, Parent: 4331)
  • rm (PID: 6240, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.hr7Lm3IAiC /tmp/tmp.jF60PzXONv /tmp/tmp.4jx8MJ2nKS
  • dash New Fork (PID: 6241, Parent: 4331)
  • rm (PID: 6241, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.hr7Lm3IAiC /tmp/tmp.jF60PzXONv /tmp/tmp.4jx8MJ2nKS
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: arm5.elfReversingLabs: Detection: 15%
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: 54.171.230.55
Source: unknownTCP traffic detected without corresponding DNS query: 54.171.230.55
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: 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: 6240)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.hr7Lm3IAiC /tmp/tmp.jF60PzXONv /tmp/tmp.4jx8MJ2nKSJump to behavior
Source: /usr/bin/dash (PID: 6241)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.hr7Lm3IAiC /tmp/tmp.jF60PzXONv /tmp/tmp.4jx8MJ2nKSJump to behavior
Source: /tmp/arm5.elf (PID: 6208)Queries kernel information via 'uname': Jump to behavior
Source: arm5.elf, 6208.1.000055cf895ba000.000055cf896e8000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: arm5.elf, 6208.1.00007fff4f206000.00007fff4f227000.rw-.sdmpBinary or memory string: 0x86_64/usr/bin/qemu-arm/tmp/arm5.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/arm5.elf
Source: arm5.elf, 6208.1.000055cf895ba000.000055cf896e8000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: arm5.elf, 6208.1.00007fff4f206000.00007fff4f227000.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: 1542672 Sample: arm5.elf Startdate: 26/10/2024 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 arm5.elf 2->10         started        signatures3 process4
SourceDetectionScannerLabelLink
arm5.elf16%ReversingLabsLinux.Backdoor.Mirai
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, EABI4 version 1 (SYSV), statically linked, stripped
                                                              Entropy (8bit):6.047642965798143
                                                              TrID:
                                                              • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                                              File name:arm5.elf
                                                              File size:64'508 bytes
                                                              MD5:b899844cddaafc13618a6f364b66ddb9
                                                              SHA1:16c5105040d33d01dd95539b5a8901c93cfae65d
                                                              SHA256:37d106fb16860543d9ad64dcac76d12911612f170823825ee9b5df6b4a64a580
                                                              SHA512:59fd235fb3dd274e7dd7983b4572f87ad725b33277ece7bc5d51b6580adb1ea82e0b075706f210fbae34140ccca9d24e9434e23f9ef47a057122c0030454a89e
                                                              SSDEEP:1536:flncvaZ4BQ9DbQjqC82lauijYlL2Ujx+hQdZmCYWnh:+va+BQ9iqCSzYlL2Ujx+8bLh
                                                              TLSH:6253195AF9806F11D8D525BEFE0E014933534B6CE3FE7212AD249B2523C7A6B0F7A415
                                                              File Content Preview:.ELF..............(.........4...T.......4. ...(........p.....t...t.......................................................................1..........................................Q.td..................................-...L..................@-.,@...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:UNIX - System V
                                                              ABI Version:0
                                                              Entry Point Address:0x8194
                                                              Flags:0x4000002
                                                              ELF Header Size:52
                                                              Program Header Offset:52
                                                              Program Header Size:32
                                                              Number of Program Headers:5
                                                              Section Header Offset:63828
                                                              Section Header Size:40
                                                              Number of Section Headers:17
                                                              Header String Table Index:16
                                                              NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                                                              NULL0x00x00x00x00x0000
                                                              .initPROGBITS0x80d40xd40x100x00x6AX004
                                                              .textPROGBITS0x80f00xf00xe2a40x00x6AX0016
                                                              .finiPROGBITS0x163940xe3940x100x00x6AX004
                                                              .rodataPROGBITS0x163a80xe3a80x11280x00x2A008
                                                              .ARM.extabPROGBITS0x174d00xf4d00x180x00x2A004
                                                              .ARM.exidxARM_EXIDX0x174e80xf4e80x1180x00x82AL204
                                                              .eh_framePROGBITS0x186000xf6000x40x00x3WA004
                                                              .tbssNOBITS0x186040xf6040x80x00x403WAT004
                                                              .init_arrayINIT_ARRAY0x186040xf6040x40x00x3WA004
                                                              .fini_arrayFINI_ARRAY0x186080xf6080x40x00x3WA004
                                                              .jcrPROGBITS0x1860c0xf60c0x40x00x3WA004
                                                              .gotPROGBITS0x186100xf6100xa80x40x3WA004
                                                              .dataPROGBITS0x186b80xf6b80x1fc0x00x3WA004
                                                              .bssNOBITS0x188b40xf8b40x2f000x00x3WA004
                                                              .ARM.attributesARM_ATTRIBUTES0x00xf8b40x160x00x0001
                                                              .shstrtabSTRTAB0x00xf8ca0x880x00x0001
                                                              TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                                                              EXIDX0xf4e80x174e80x174e80x1180x1184.41880x4R 0x4.ARM.exidx
                                                              LOAD0x00x80000x80000xf6000xf6006.07420x5R E0x1000.init .text .fini .rodata .ARM.extab .ARM.exidx
                                                              LOAD0xf6000x186000x186000x2b40x31b43.85320x6RW 0x1000.eh_frame .tbss .init_array .fini_array .jcr .got .data .bss
                                                              TLS0xf6040x186040x186040x00x80.00000x4R 0x4.tbss
                                                              GNU_STACK0x00x00x00x00x00.00000x7RWE0x4
                                                              TimestampSource PortDest PortSource IPDest IP
                                                              Oct 26, 2024 06:07:56.284375906 CEST42836443192.168.2.2391.189.91.43
                                                              Oct 26, 2024 06:07:57.052231073 CEST4251680192.168.2.23109.202.202.202
                                                              Oct 26, 2024 06:08:10.874569893 CEST43928443192.168.2.2391.189.91.42
                                                              Oct 26, 2024 06:08:19.263854027 CEST33606443192.168.2.2354.171.230.55
                                                              Oct 26, 2024 06:08:19.270204067 CEST4433360654.171.230.55192.168.2.23
                                                              Oct 26, 2024 06:08:19.270279884 CEST33606443192.168.2.2354.171.230.55
                                                              Oct 26, 2024 06:08:23.160722971 CEST42836443192.168.2.2391.189.91.43
                                                              Oct 26, 2024 06:08:27.256197929 CEST4251680192.168.2.23109.202.202.202
                                                              Oct 26, 2024 06:08:51.829668999 CEST43928443192.168.2.2391.189.91.42

                                                              System Behavior

                                                              Start time (UTC):04:07:51
                                                              Start date (UTC):26/10/2024
                                                              Path:/tmp/arm5.elf
                                                              Arguments:/tmp/arm5.elf
                                                              File size:4956856 bytes
                                                              MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

                                                              Start time (UTC):04:08:18
                                                              Start date (UTC):26/10/2024
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):04:08:18
                                                              Start date (UTC):26/10/2024
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.hr7Lm3IAiC /tmp/tmp.jF60PzXONv /tmp/tmp.4jx8MJ2nKS
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                                              Start time (UTC):04:08:18
                                                              Start date (UTC):26/10/2024
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):04:08:18
                                                              Start date (UTC):26/10/2024
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.hr7Lm3IAiC /tmp/tmp.jF60PzXONv /tmp/tmp.4jx8MJ2nKS
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b