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Linux Analysis Report
zerarm6.elf

Overview

General Information

Sample name:zerarm6.elf
Analysis ID:1580169
MD5:35539a09a225a83c4230796aa2f9be8d
SHA1:6b33f1bea0a84c923c12df4189d8781a7c6c2479
SHA256:005fcdddd39c1f2e8ed89927323a154667bca9ec6ed5d0c7d1359b317a5b2cda
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 contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
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:1580169
Start date and time:2024-12-24 03:39:09 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 48s
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:zerarm6.elf
Detection:MAL
Classification:mal48.linELF@0/0@0/0
Command:/tmp/zerarm6.elf
PID:6284
Exit Code:139
Exit Code Info:SIGSEGV (11) Segmentation fault invalid memory reference
Killed:False
Standard Output:

Standard Error:qemu: uncaught target signal 11 (Segmentation fault) - core dumped
  • system is lnxubuntu20
  • zerarm6.elf (PID: 6284, Parent: 6207, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/zerarm6.elf
  • dash New Fork (PID: 6310, Parent: 4331)
  • rm (PID: 6310, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.1hkBUTUO9L /tmp/tmp.SDjGL7IOnG /tmp/tmp.hxqvQ0DjqI
  • dash New Fork (PID: 6311, Parent: 4331)
  • rm (PID: 6311, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.1hkBUTUO9L /tmp/tmp.SDjGL7IOnG /tmp/tmp.hxqvQ0DjqI
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: zerarm6.elfReversingLabs: Detection: 31%
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: 109.202.202.202
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.43
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: 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: Initial sampleString containing 'busybox' found: /bin/busybox echo -ne
Source: Initial sampleString containing 'busybox' found: /bin/busybox echo -ne >> > .d
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: 6310)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.1hkBUTUO9L /tmp/tmp.SDjGL7IOnG /tmp/tmp.hxqvQ0DjqIJump to behavior
Source: /usr/bin/dash (PID: 6311)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.1hkBUTUO9L /tmp/tmp.SDjGL7IOnG /tmp/tmp.hxqvQ0DjqIJump to behavior
Source: /tmp/zerarm6.elf (PID: 6284)Queries kernel information via 'uname': Jump to behavior
Source: zerarm6.elf, 6284.1.000055f794a3b000.000055f794b69000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: zerarm6.elf, 6284.1.000055f794a3b000.000055f794b69000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: zerarm6.elf, 6284.1.00007fff41008000.00007fff41029000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: zerarm6.elf, 6284.1.00007fff41008000.00007fff41029000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/zerarm6.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/zerarm6.elf
Source: zerarm6.elf, 6284.1.00007fff41008000.00007fff41029000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
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: 1580169 Sample: zerarm6.elf Startdate: 24/12/2024 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 zerarm6.elf 2->10         started        signatures3 process4

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


windows-stand
SourceDetectionScannerLabelLink
zerarm6.elf32%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 context
                                          No created / dropped files found
                                          File type:ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
                                          Entropy (8bit):5.927989948445224
                                          TrID:
                                          • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                          File name:zerarm6.elf
                                          File size:58'552 bytes
                                          MD5:35539a09a225a83c4230796aa2f9be8d
                                          SHA1:6b33f1bea0a84c923c12df4189d8781a7c6c2479
                                          SHA256:005fcdddd39c1f2e8ed89927323a154667bca9ec6ed5d0c7d1359b317a5b2cda
                                          SHA512:71c016170e18143ec5a8e83603e11316161b04b01682485d3fdae83271c110cb85cb5cfb31dd59be4d7762afdb446b6538b591f93a6f73113b119e2f8cdf8e05
                                          SSDEEP:1536:PRnVHdruEq4qqQH3iwUa5PRIfiCUz0+P4T:v9u0tQHyw+Uz0+P4T
                                          TLSH:7A43F945BC918B11C5D412BEF92E118E33272778E3DFB212DD106F24778A96B0E7BA06
                                          File Content Preview:.ELF..............(.....T...4...........4. ...(.....................................................8...............Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../.8.............-.@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:0x8154
                                          Flags:0x4000002
                                          ELF Header Size:52
                                          Program Header Offset:52
                                          Program Header Size:32
                                          Number of Program Headers:3
                                          Section Header Offset:58032
                                          Section Header Size:40
                                          Number of Section Headers:13
                                          Header String Table Index:12
                                          NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                                          NULL0x00x00x00x00x0000
                                          .initPROGBITS0x80940x940x100x00x6AX004
                                          .textPROGBITS0x80b00xb00xd3fc0x00x6AX0016
                                          .finiPROGBITS0x154ac0xd4ac0x100x00x6AX004
                                          .rodataPROGBITS0x154bc0xd4bc0x8140x00x2A004
                                          .init_arrayINIT_ARRAY0x1e0040xe0080x40x00x3WA004
                                          .fini_arrayFINI_ARRAY0x1e0080xe00c0x40x00x3WA004
                                          .jcrPROGBITS0x1e00c0xe0100x40x00x3WA004
                                          .gotPROGBITS0x1e0100xe0140x740x40x3WA004
                                          .dataPROGBITS0x1e0840xe0880x1b40x00x3WA004
                                          .bssNOBITS0x1e2380xe23c0x244c0x00x3WA004
                                          .ARM.attributesARM_ATTRIBUTES0x00xe23c0x100x00x0001
                                          .shstrtabSTRTAB0x00xe24c0x620x00x0001
                                          TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                                          LOAD0x00x80000x80000xdcd00xdcd06.01100x5R E0x8000.init .text .fini .rodata
                                          LOAD0xe0040x1e0040x1e0000x2380xa6802.34090x6RW 0x8000.init_array .fini_array .jcr .got .data .bss
                                          GNU_STACK0x00x00x00x00x00.00000x7RWE0x4
                                          TimestampSource PortDest PortSource IPDest IP
                                          Dec 24, 2024 03:40:06.825285912 CET43928443192.168.2.2391.189.91.42
                                          Dec 24, 2024 03:40:09.917176962 CET4433360654.171.230.55192.168.2.23
                                          Dec 24, 2024 03:40:09.917411089 CET33606443192.168.2.2354.171.230.55
                                          Dec 24, 2024 03:40:10.036927938 CET4433360654.171.230.55192.168.2.23
                                          Dec 24, 2024 03:40:11.944587946 CET4251680192.168.2.23109.202.202.202
                                          Dec 24, 2024 03:40:12.200552940 CET42836443192.168.2.2391.189.91.43
                                          Dec 24, 2024 03:40:27.558378935 CET43928443192.168.2.2391.189.91.42
                                          Dec 24, 2024 03:40:37.797004938 CET42836443192.168.2.2391.189.91.43
                                          Dec 24, 2024 03:40:41.892400026 CET4251680192.168.2.23109.202.202.202
                                          Dec 24, 2024 03:41:08.512542009 CET43928443192.168.2.2391.189.91.42
                                          Dec 24, 2024 03:41:28.989835978 CET42836443192.168.2.2391.189.91.43

                                          System Behavior

                                          Start time (UTC):02:40:05
                                          Start date (UTC):24/12/2024
                                          Path:/tmp/zerarm6.elf
                                          Arguments:/tmp/zerarm6.elf
                                          File size:4956856 bytes
                                          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

                                          Start time (UTC):02:40:08
                                          Start date (UTC):24/12/2024
                                          Path:/usr/bin/dash
                                          Arguments:-
                                          File size:129816 bytes
                                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                          Start time (UTC):02:40:08
                                          Start date (UTC):24/12/2024
                                          Path:/usr/bin/rm
                                          Arguments:rm -f /tmp/tmp.1hkBUTUO9L /tmp/tmp.SDjGL7IOnG /tmp/tmp.hxqvQ0DjqI
                                          File size:72056 bytes
                                          MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                          Start time (UTC):02:40:08
                                          Start date (UTC):24/12/2024
                                          Path:/usr/bin/dash
                                          Arguments:-
                                          File size:129816 bytes
                                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                          Start time (UTC):02:40:08
                                          Start date (UTC):24/12/2024
                                          Path:/usr/bin/rm
                                          Arguments:rm -f /tmp/tmp.1hkBUTUO9L /tmp/tmp.SDjGL7IOnG /tmp/tmp.hxqvQ0DjqI
                                          File size:72056 bytes
                                          MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b