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Linux Analysis Report
arm.elf

Overview

General Information

Sample name:arm.elf
Analysis ID:1650378
MD5:9d1dc6a2d36e6aade47da49c0387008d
SHA1:956a3839aa95f09218cf0ea644a54dfa4decda52
SHA256:5233e430e0b60481e095fdea5faf6fd2d721e3a0ca3fce6d90b1826aaa5014c3
Tags:elfuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100

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

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious
Joe Sandbox version:42.0.0 Malachite
Analysis ID:1650378
Start date and time:2025-03-27 16:48:25 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 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:arm.elf
Detection:MAL
Classification:mal48.linELF@0/0@0/0
Command:/tmp/arm.elf
PID:6250
Exit Code:1
Exit Code Info:
Killed:False
Standard Output:

Standard Error:
  • system is lnxubuntu20
  • arm.elf (PID: 6250, Parent: 6175, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm.elf
  • dash New Fork (PID: 6312, Parent: 4331)
  • rm (PID: 6312, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.4YTMvL7yD2 /tmp/tmp.8fi2YRh9QT /tmp/tmp.MuMZe3HuzJ
  • dash New Fork (PID: 6313, Parent: 4331)
  • rm (PID: 6313, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.4YTMvL7yD2 /tmp/tmp.8fi2YRh9QT /tmp/tmp.MuMZe3HuzJ
  • 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: 19%
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: 34.249.145.219
Source: unknownTCP traffic detected without corresponding DNS query: 34.249.145.219
Source: unknownTCP traffic detected without corresponding DNS query: 34.249.145.219
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: 34.249.145.219
Source: unknownNetwork traffic detected: HTTP traffic on port 39246 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 443 -> 39246
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: 6312)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.4YTMvL7yD2 /tmp/tmp.8fi2YRh9QT /tmp/tmp.MuMZe3HuzJJump to behavior
Source: /usr/bin/dash (PID: 6313)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.4YTMvL7yD2 /tmp/tmp.8fi2YRh9QT /tmp/tmp.MuMZe3HuzJJump to behavior
Source: /tmp/arm.elf (PID: 6250)Queries kernel information via 'uname': Jump to behavior
Source: arm.elf, 6250.1.000055a498293000.000055a4983c1000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: arm.elf, 6250.1.00007ffe9b23e000.00007ffe9b25f000.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, 6250.1.000055a498293000.000055a4983c1000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: arm.elf, 6250.1.00007ffe9b23e000.00007ffe9b25f000.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: 1650378 Sample: arm.elf Startdate: 27/03/2025 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.elf19%ReversingLabsLinux.Trojan.Mirai
No Antivirus matches
No Antivirus matches
No Antivirus matches

Download Network PCAP: filteredfull

No contacted domains info
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs
IPDomainCountryFlagASNASN NameMalicious
34.249.145.219
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 context
                                                              No created / dropped files found
                                                              File type:ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, stripped
                                                              Entropy (8bit):6.007703529813226
                                                              TrID:
                                                              • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                                              File name:arm.elf
                                                              File size:46'184 bytes
                                                              MD5:9d1dc6a2d36e6aade47da49c0387008d
                                                              SHA1:956a3839aa95f09218cf0ea644a54dfa4decda52
                                                              SHA256:5233e430e0b60481e095fdea5faf6fd2d721e3a0ca3fce6d90b1826aaa5014c3
                                                              SHA512:2a1c71cfdce55e91f1b5c3f253e62e22df8f9cf7d33fcd083fb083114abe0f8a082d465cf841a117f9e5bbb1d064802a5c1909e69fb9c4778581672cfdf1e139
                                                              SSDEEP:768:CeCYlzMObxaMcywAPAsyH0F1cN9rgudj+mI7JSk96CH:CxYlzMObx10AosyHC+9Ecjpmnh
                                                              TLSH:3B232C06FC93D516CAC57276BB1E928D331623A8E2EB37039C15AFB577C74290E76884
                                                              File Content Preview:.ELF...a..........(.........4...........4. ...(.....................d...d...............................`...........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:45784
                                                              Section Header Size:40
                                                              Number of Section Headers:10
                                                              Header String Table Index:9
                                                              NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                                                              NULL0x00x00x00x00x0000
                                                              .initPROGBITS0x80940x940x180x00x6AX004
                                                              .textPROGBITS0x80b00xb00x9edc0x00x6AX0016
                                                              .finiPROGBITS0x11f8c0x9f8c0x140x00x6AX004
                                                              .rodataPROGBITS0x11fa00x9fa00xbc40x00x2A004
                                                              .ctorsPROGBITS0x1b0000xb0000x80x00x3WA004
                                                              .dtorsPROGBITS0x1b0080xb0080x80x00x3WA004
                                                              .dataPROGBITS0x1b0140xb0140x2840x00x3WA004
                                                              .bssNOBITS0x1b2980xb2980x13c80x00x3WA004
                                                              .shstrtabSTRTAB0x00xb2980x3e0x00x0001
                                                              TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                                                              LOAD0x00x80000x80000xab640xab646.12570x5R E0x8000.init .text .fini .rodata
                                                              LOAD0xb0000x1b0000x1b0000x2980x16603.79950x6RW 0x8000.ctors .dtors .data .bss
                                                              GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

                                                              Download Network PCAP: filteredfull

                                                              • Total Packets: 11
                                                              • 443 (HTTPS)
                                                              • 80 (HTTP)
                                                              TimestampSource PortDest PortSource IPDest IP
                                                              Mar 27, 2025 16:49:13.343724012 CET43928443192.168.2.2391.189.91.42
                                                              Mar 27, 2025 16:49:18.719218016 CET42836443192.168.2.2391.189.91.43
                                                              Mar 27, 2025 16:49:20.254822016 CET4251680192.168.2.23109.202.202.202
                                                              Mar 27, 2025 16:49:32.086796045 CET39246443192.168.2.2334.249.145.219
                                                              Mar 27, 2025 16:49:32.086828947 CET4433924634.249.145.219192.168.2.23
                                                              Mar 27, 2025 16:49:32.087013960 CET39246443192.168.2.2334.249.145.219
                                                              Mar 27, 2025 16:49:32.087238073 CET39246443192.168.2.2334.249.145.219
                                                              Mar 27, 2025 16:49:32.087253094 CET4433924634.249.145.219192.168.2.23
                                                              Mar 27, 2025 16:49:34.844800949 CET43928443192.168.2.2391.189.91.42
                                                              Mar 27, 2025 16:49:45.083432913 CET42836443192.168.2.2391.189.91.43
                                                              Mar 27, 2025 16:49:51.226622105 CET4251680192.168.2.23109.202.202.202
                                                              Mar 27, 2025 16:50:15.799180984 CET43928443192.168.2.2391.189.91.42
                                                              Mar 27, 2025 16:50:32.079010963 CET39246443192.168.2.2334.249.145.219
                                                              Mar 27, 2025 16:50:32.124269009 CET4433924634.249.145.219192.168.2.23
                                                              Mar 27, 2025 16:51:16.902415991 CET4433924634.249.145.219192.168.2.23

                                                              System Behavior

                                                              Start time (UTC):15:49:12
                                                              Start date (UTC):27/03/2025
                                                              Path:/tmp/arm.elf
                                                              Arguments:/tmp/arm.elf
                                                              File size:4956856 bytes
                                                              MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

                                                              Start time (UTC):15:50:31
                                                              Start date (UTC):27/03/2025
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):15:50:31
                                                              Start date (UTC):27/03/2025
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.4YTMvL7yD2 /tmp/tmp.8fi2YRh9QT /tmp/tmp.MuMZe3HuzJ
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                                              Start time (UTC):15:50:31
                                                              Start date (UTC):27/03/2025
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):15:50:31
                                                              Start date (UTC):27/03/2025
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.4YTMvL7yD2 /tmp/tmp.8fi2YRh9QT /tmp/tmp.MuMZe3HuzJ
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b