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Linux Analysis Report
arm6.elf

Overview

General Information

Sample name:arm6.elf
Analysis ID:1615797
MD5:41a27d8ad493086089578ed33870e7cd
SHA1:c7ec415f6c3d0e5fc7f36e742a42381e789f57c8
SHA256:83b899e70d4616f3a8a0ae24aa3966d80df41b7610eac13e91e87a2c1c204caf
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
Found strings indicative of a multi-platform dropper
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:1615797
Start date and time:2025-02-15 14:41:25 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 51s
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:arm6.elf
Detection:MAL
Classification:mal48.linELF@0/0@0/0
Command:/tmp/arm6.elf
PID:6276
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
  • dash New Fork (PID: 6251, Parent: 4331)
  • rm (PID: 6251, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.Yn6Yk3g532 /tmp/tmp.3MNxUwak3e /tmp/tmp.JdpytBogfv
  • dash New Fork (PID: 6253, Parent: 4331)
  • rm (PID: 6253, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.Yn6Yk3g532 /tmp/tmp.3MNxUwak3e /tmp/tmp.JdpytBogfv
  • arm6.elf (PID: 6276, Parent: 6177, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/arm6.elf
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: arm6.elfVirustotal: Detection: 20%Perma Link
Source: arm6.elfReversingLabs: Detection: 29%
Source: arm6.elfString: (deleted)/proc/self/exe/proc//exe/proc/proc/%s/cmdlineerrwgetcurltftpftpget/.
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: 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: 6251)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.Yn6Yk3g532 /tmp/tmp.3MNxUwak3e /tmp/tmp.JdpytBogfvJump to behavior
Source: /usr/bin/dash (PID: 6253)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.Yn6Yk3g532 /tmp/tmp.3MNxUwak3e /tmp/tmp.JdpytBogfvJump to behavior
Source: /tmp/arm6.elf (PID: 6276)Queries kernel information via 'uname': Jump to behavior
Source: arm6.elf, 6276.1.00007ffe2f6f7000.00007ffe2f718000.rw-.sdmpBinary or memory string: ikx86_64/usr/bin/qemu-arm/tmp/arm6.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/arm6.elf
Source: arm6.elf, 6276.1.0000557d7799c000.0000557d77aca000.rw-.sdmpBinary or memory string: w}U!/etc/qemu-binfmt/arm
Source: arm6.elf, 6276.1.0000557d7799c000.0000557d77aca000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: arm6.elf, 6276.1.00007ffe2f6f7000.00007ffe2f718000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: arm6.elf, 6276.1.00007ffe2f6f7000.00007ffe2f718000.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 Information1
Scripting
Valid AccountsWindows Management Instrumentation1
Scripting
Path 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: 1615797 Sample: arm6.elf Startdate: 15/02/2025 Architecture: LINUX Score: 48 10 109.202.202.202, 80 INIT7CH Switzerland 2->10 12 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->12 14 2 other IPs or domains 2->14 16 Multi AV Scanner detection for submitted file 2->16 6 dash rm arm6.elf 2->6         started        8 dash rm 2->8         started        signatures3 process4
SourceDetectionScannerLabelLink
arm6.elf21%VirustotalBrowse
arm6.elf30%ReversingLabsLinux.Backdoor.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
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 created / dropped files found
                                                              File type:ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
                                                              Entropy (8bit):6.034600114674715
                                                              TrID:
                                                              • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                                              File name:arm6.elf
                                                              File size:67'016 bytes
                                                              MD5:41a27d8ad493086089578ed33870e7cd
                                                              SHA1:c7ec415f6c3d0e5fc7f36e742a42381e789f57c8
                                                              SHA256:83b899e70d4616f3a8a0ae24aa3966d80df41b7610eac13e91e87a2c1c204caf
                                                              SHA512:3c48c2ac1b7bda53144e6495b4e72c76f87269c86a30521a35c69e18a05340e5f74ad659486e37dab1307a1d923882c6eeacf86ce11787e6a182b0cadb890eb8
                                                              SSDEEP:1536:zEnDGrzxV98eHQw5cvaL2y5Q1OMOiuxefo5dYb2:pHmeHN5cvaLGAxefovg2
                                                              TLSH:53631856B8819B11D5C512BAFE1E128E3313177CE3DE73129E20AF24778B96B0E3B915
                                                              File Content Preview:.ELF..............(.....T...4...........4. ...(..................... ... ...........................t...............Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../.t.............-.@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:66536
                                                              Section Header Size:40
                                                              Number of Section Headers:12
                                                              Header String Table Index:11
                                                              NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                                                              NULL0x00x00x00x00x0000
                                                              .initPROGBITS0x80940x940x100x00x6AX004
                                                              .textPROGBITS0x80b00xb00xe94c0x00x6AX0016
                                                              .finiPROGBITS0x169fc0xe9fc0x100x00x6AX004
                                                              .rodataPROGBITS0x16a100xea100x13100x00x2A008
                                                              .init_arrayINIT_ARRAY0x180040x100080x40x00x3WA004
                                                              .fini_arrayFINI_ARRAY0x180080x1000c0x40x00x3WA004
                                                              .gotPROGBITS0x180100x100140x780x40x3WA004
                                                              .dataPROGBITS0x180880x1008c0x2ec0x00x3WA004
                                                              .bssNOBITS0x183740x103780x64a80x00x3WA004
                                                              .ARM.attributesARM_ATTRIBUTES0x00x103780x100x00x0001
                                                              .shstrtabSTRTAB0x00x103880x5d0x00x0001
                                                              TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                                                              LOAD0x00x80000x80000xfd200xfd206.09250x5R E0x8000.init .text .fini .rodata
                                                              LOAD0x100040x180040x180000x3740xe8184.52770x6RW 0x8000.init_array .fini_array .got .data .bss
                                                              GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

                                                              Download Network PCAP: filteredfull

                                                              • Total Packets: 9
                                                              • 443 (HTTPS)
                                                              • 80 (HTTP)
                                                              TimestampSource PortDest PortSource IPDest IP
                                                              Feb 15, 2025 14:42:25.063576937 CET43928443192.168.2.2391.189.91.42
                                                              Feb 15, 2025 14:42:25.709913969 CET4433360654.171.230.55192.168.2.23
                                                              Feb 15, 2025 14:42:25.710139036 CET33606443192.168.2.2354.171.230.55
                                                              Feb 15, 2025 14:42:25.715049028 CET4433360654.171.230.55192.168.2.23
                                                              Feb 15, 2025 14:42:28.135020971 CET4251680192.168.2.23109.202.202.202
                                                              Feb 15, 2025 14:42:30.438724995 CET42836443192.168.2.2391.189.91.43
                                                              Feb 15, 2025 14:42:45.796789885 CET43928443192.168.2.2391.189.91.42
                                                              Feb 15, 2025 14:42:56.035331011 CET42836443192.168.2.2391.189.91.43
                                                              Feb 15, 2025 14:42:58.082886934 CET4251680192.168.2.23109.202.202.202
                                                              Feb 15, 2025 14:43:26.751123905 CET43928443192.168.2.2391.189.91.42
                                                              Feb 15, 2025 14:43:47.228601933 CET42836443192.168.2.2391.189.91.43

                                                              System Behavior

                                                              Start time (UTC):13:42:24
                                                              Start date (UTC):15/02/2025
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):13:42:24
                                                              Start date (UTC):15/02/2025
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.Yn6Yk3g532 /tmp/tmp.3MNxUwak3e /tmp/tmp.JdpytBogfv
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                                              Start time (UTC):13:42:24
                                                              Start date (UTC):15/02/2025
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):13:42:24
                                                              Start date (UTC):15/02/2025
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.Yn6Yk3g532 /tmp/tmp.3MNxUwak3e /tmp/tmp.JdpytBogfv
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                                              Start time (UTC):13:42:24
                                                              Start date (UTC):15/02/2025
                                                              Path:/tmp/arm6.elf
                                                              Arguments:/tmp/arm6.elf
                                                              File size:4956856 bytes
                                                              MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1