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Linux Analysis Report
t4.elf

Overview

General Information

Sample name:t4.elf
Analysis ID:1589540
MD5:167038cccce15429ec6043aae913663c
SHA1:9c87473a1d79b7bd479f4cc72ce498447a85d8db
SHA256:d7266f63e70572eb1e38c57638af1358a36551c234537a2021df3badb6482ef7
Tags:elfuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100
Whitelisted:false

Signatures

Multi AV Scanner detection for submitted file
Enumerates processes within the "proc" file system
Sample has stripped symbol table
Sample tries to kill a process (SIGKILL)
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

Joe Sandbox version:42.0.0 Malachite
Analysis ID:1589540
Start date and time:2025-01-12 19:30:13 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 45s
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:t4.elf
Detection:MAL
Classification:mal48.linELF@0/0@0/0
Command:/tmp/t4.elf
PID:6255
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
  • t4.elf (PID: 6255, Parent: 6180, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/t4.elf
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: t4.elfVirustotal: Detection: 34%Perma Link
Source: t4.elfReversingLabs: Detection: 50%
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: t4.elf, 6255.1.00007fd208033000.00007fd208037000.rw-.sdmpString found in binary or memory: http://1/wget.sh
Source: t4.elf, 6255.1.00007fd208033000.00007fd208037000.rw-.sdmpString found in binary or memory: http://9/curl.sh
Source: t4.elf, 6255.1.00007fd208033000.00007fd208037000.rw-.sdmpString found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
Source: t4.elf, 6255.1.00007fd208033000.00007fd208037000.rw-.sdmpString found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/
Source: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 42836 -> 443
Source: ELF static info symbol of initial sample.symtab present: no
Source: /tmp/t4.elf (PID: 6255)SIGKILL sent: pid: 884, result: successfulJump to behavior
Source: classification engineClassification label: mal48.linELF@0/0@0/0
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/6255/statusJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/491/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/491/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/1/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/1/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/793/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/793/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/761/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/761/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/772/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/772/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/774/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/774/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/785/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/785/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/796/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/796/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/884/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/884/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/720/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/720/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/797/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/797/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/721/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/721/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/777/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/777/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/788/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/788/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/799/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/799/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/789/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/789/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/800/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/800/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/658/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/658/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/801/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/801/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/759/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/759/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/847/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)File opened: /proc/847/cmdlineJump to behavior
Source: /tmp/t4.elf (PID: 6255)Queries kernel information via 'uname': Jump to behavior
Source: t4.elf, 6255.1.00005594777e4000.0000559477935000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: t4.elf, 6255.1.00005594777e4000.0000559477935000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: t4.elf, 6255.1.00007ffcc9462000.00007ffcc9483000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: t4.elf, 6255.1.00007ffcc9462000.00007ffcc9483000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Source: t4.elf, 6255.1.00007ffcc9462000.00007ffcc9483000.rw-.sdmpBinary or memory string: ?Gx86_64/usr/bin/qemu-arm/tmp/t4.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/t4.elf
ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath InterceptionDirect Volume Access1
OS Credential Dumping
11
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
SourceDetectionScannerLabelLink
t4.elf35%VirustotalBrowse
t4.elf50%ReversingLabsLinux.Backdoor.Mirai
No Antivirus matches
No Antivirus matches
No Antivirus matches
No contacted domains info
NameSourceMaliciousAntivirus DetectionReputation
http://1/wget.sht4.elf, 6255.1.00007fd208033000.00007fd208037000.rw-.sdmpfalse
    high
    http://schemas.xmlsoap.org/soap/encoding/t4.elf, 6255.1.00007fd208033000.00007fd208037000.rw-.sdmpfalse
      high
      http://9/curl.sht4.elf, 6255.1.00007fd208033000.00007fd208037000.rw-.sdmpfalse
        high
        http://schemas.xmlsoap.org/soap/envelope/t4.elf, 6255.1.00007fd208033000.00007fd208037000.rw-.sdmpfalse
          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
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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):5.959072604133158
                                                  TrID:
                                                  • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                                  File name:t4.elf
                                                  File size:79'764 bytes
                                                  MD5:167038cccce15429ec6043aae913663c
                                                  SHA1:9c87473a1d79b7bd479f4cc72ce498447a85d8db
                                                  SHA256:d7266f63e70572eb1e38c57638af1358a36551c234537a2021df3badb6482ef7
                                                  SHA512:f0c44880dcb9c10f75a15b84b61185af75bf5110352f91583ef499b9a1a26801ce51b074d2135e94d77cf695ff3056f0e780eb5586ef28c89d8ef1033311f16b
                                                  SSDEEP:1536:XbSnRbmEe6U+9I0MYQIzcCgWQ9MjiCU033lHqnvIZgTeg:L5H0SuU033lHqvJT
                                                  TLSH:CD730956F9818A42C5D042BB792E569E33076BB8E3DE3313DD241B25778B62F0F27906
                                                  File Content Preview:.ELF..............(.....T...4....5......4. ...(......................!...!...............0...0...0..................Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../..5.......0....-.@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:79244
                                                  Section Header Size:40
                                                  Number of Section Headers:13
                                                  Header String Table Index:12
                                                  NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                                                  NULL0x00x00x00x00x0000
                                                  .initPROGBITS0x80940x940x100x00x6AX004
                                                  .textPROGBITS0x80b00xb00x108e40x00x6AX0016
                                                  .finiPROGBITS0x189940x109940x100x00x6AX004
                                                  .rodataPROGBITS0x189a40x109a40x181c0x00x2A004
                                                  .eh_framePROGBITS0x230000x130000x40x00x3WA004
                                                  .init_arrayINIT_ARRAY0x230040x130040x40x00x3WA004
                                                  .fini_arrayFINI_ARRAY0x230080x130080x40x00x3WA004
                                                  .gotPROGBITS0x230100x130100x740x40x3WA004
                                                  .dataPROGBITS0x230840x130840x4900x00x3WA004
                                                  .bssNOBITS0x235140x135140x29700x00x3WA004
                                                  .ARM.attributesARM_ATTRIBUTES0x00x135140x100x00x0001
                                                  .shstrtabSTRTAB0x00x135240x670x00x0001
                                                  TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                                                  LOAD0x00x80000x80000x121c00x121c06.11990x5R E0x8000.init .text .fini .rodata
                                                  LOAD0x130000x230000x230000x5140x2e846.02280x6RW 0x8000.eh_frame .init_array .fini_array .got .data .bss
                                                  GNU_STACK0x00x00x00x00x00.00000x7RWE0x4
                                                  TimestampSource PortDest PortSource IPDest IP
                                                  Jan 12, 2025 19:31:06.014518976 CET43928443192.168.2.2391.189.91.42
                                                  Jan 12, 2025 19:31:11.389800072 CET42836443192.168.2.2391.189.91.43
                                                  Jan 12, 2025 19:31:12.669692039 CET4251680192.168.2.23109.202.202.202
                                                  Jan 12, 2025 19:31:25.979744911 CET43928443192.168.2.2391.189.91.42
                                                  Jan 12, 2025 19:31:38.265988111 CET42836443192.168.2.2391.189.91.43
                                                  Jan 12, 2025 19:31:42.361454964 CET4251680192.168.2.23109.202.202.202
                                                  Jan 12, 2025 19:32:06.934012890 CET43928443192.168.2.2391.189.91.42

                                                  System Behavior

                                                  Start time (UTC):18:31:06
                                                  Start date (UTC):12/01/2025
                                                  Path:/tmp/t4.elf
                                                  Arguments:/tmp/t4.elf
                                                  File size:4956856 bytes
                                                  MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1