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Linux Analysis Report
GbY7rLP11G.elf

Overview

General Information

Sample name:GbY7rLP11G.elf
renamed because original name is a hash value
Original sample name:dea610cf2658555f03c4a87d3d554f4f.elf
Analysis ID:1468067
MD5:dea610cf2658555f03c4a87d3d554f4f
SHA1:2197ba7d8f7c9db1f1ecac89233b5784152fdc89
SHA256:77ec9c5279ecc1997e20079554d929f3b87e946933e542698f4516506c5b143a
Tags:32armelfmirai
Infos:

Detection

Score:52
Range:0 - 100
Whitelisted:false

Signatures

Multi AV Scanner detection for submitted file
Sample is packed with UPX
ELF contains segments with high entropy indicating compressed/encrypted content
Executes the "rm" command used to delete files or directories
Sample contains only a LOAD segment without any section mappings
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:40.0.0 Tourmaline
Analysis ID:1468067
Start date and time:2024-07-05 09:53:05 +02:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 27s
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:GbY7rLP11G.elf
renamed because original name is a hash value
Original Sample Name:dea610cf2658555f03c4a87d3d554f4f.elf
Detection:MAL
Classification:mal52.evad.linELF@0/0@0/0
Command:/tmp/GbY7rLP11G.elf
PID:6214
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: 6202, Parent: 4331)
  • rm (PID: 6202, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.6H7I0iaIFI /tmp/tmp.cvE0P4snFx /tmp/tmp.B7wEQI0wtu
  • dash New Fork (PID: 6203, Parent: 4331)
  • rm (PID: 6203, Parent: 4331, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.6H7I0iaIFI /tmp/tmp.cvE0P4snFx /tmp/tmp.B7wEQI0wtu
  • GbY7rLP11G.elf (PID: 6214, Parent: 6127, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/GbY7rLP11G.elf
  • cleanup
No yara matches
No Snort rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: GbY7rLP11G.elfVirustotal: Detection: 19%Perma Link
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: GbY7rLP11G.elfString found in binary or memory: http://upx.sf.net
Source: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 42836 -> 443
Source: LOAD without section mappingsProgram segment: 0x8000
Source: classification engineClassification label: mal52.evad.linELF@0/0@0/0

Data Obfuscation

barindex
Source: initial sampleString containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sampleString containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sampleString containing UPX found: $Id: UPX 3.95 Copyright (C) 1996-2018 the UPX Team. All Rights Reserved. $
Source: /usr/bin/dash (PID: 6202)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.6H7I0iaIFI /tmp/tmp.cvE0P4snFx /tmp/tmp.B7wEQI0wtuJump to behavior
Source: /usr/bin/dash (PID: 6203)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.6H7I0iaIFI /tmp/tmp.cvE0P4snFx /tmp/tmp.B7wEQI0wtuJump to behavior
Source: GbY7rLP11G.elfSubmission file: segment LOAD with 7.937 entropy (max. 8.0)
Source: /tmp/GbY7rLP11G.elf (PID: 6214)Queries kernel information via 'uname': Jump to behavior
Source: GbY7rLP11G.elf, 6214.1.000055738f20c000.000055738f33a000.rw-.sdmpBinary or memory string: sU!/etc/qemu-binfmt/arm
Source: GbY7rLP11G.elf, 6214.1.000055738f20c000.000055738f33a000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: GbY7rLP11G.elf, 6214.1.00007ffeeff97000.00007ffeeffb8000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: GbY7rLP11G.elf, 6214.1.00007ffeeff97000.00007ffeeffb8000.rw-.sdmpBinary or memory string: ]vx86_64/usr/bin/qemu-arm/tmp/GbY7rLP11G.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/GbY7rLP11G.elf
Source: GbY7rLP11G.elf, 6214.1.00007ffeeff97000.00007ffeeffb8000.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 Interception11
Obfuscated Files or Information
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 Scripts1
File Deletion
LSASS 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

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


windows-stand
SourceDetectionScannerLabelLink
GbY7rLP11G.elf20%VirustotalBrowse
No Antivirus matches
No Antivirus matches
SourceDetectionScannerLabelLink
http://upx.sf.net0%URL Reputationsafe
No contacted domains info
NameSourceMaliciousAntivirus DetectionReputation
http://upx.sf.netGbY7rLP11G.elftrue
  • URL Reputation: safe
unknown
  • 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
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                                                              No created / dropped files found
                                                              File type:ELF 32-bit LSB executable, ARM, EABI4 version 1 (GNU/Linux), statically linked, no section header
                                                              Entropy (8bit):7.9683562089979105
                                                              TrID:
                                                              • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                                              File name:GbY7rLP11G.elf
                                                              File size:41'480 bytes
                                                              MD5:dea610cf2658555f03c4a87d3d554f4f
                                                              SHA1:2197ba7d8f7c9db1f1ecac89233b5784152fdc89
                                                              SHA256:77ec9c5279ecc1997e20079554d929f3b87e946933e542698f4516506c5b143a
                                                              SHA512:2233b72f8aa44d1f18f89587d6acdd59da6ead97640967996cbc77684cde4ac175912b87e57d474a1b2f3bf0c93fa322a46662501eb6b31cb2744772cf553131
                                                              SSDEEP:768:tl+BA+heMr8nYMITRrGQms+rOq3UIg1j9ayiYalbsR:KA+UnYM2SQmxrh8ZMY+bq
                                                              TLSH:4213F171C55293B9DAA20F30EAFB5C83629537E8ECF7BAC44A1C4615AAD5705887A043
                                                              File Content Preview:.ELF..............(.........4...........4. ...(......................h...h..........................................Q.td............................x.?.UPX!....................h..........?.E.h;....#..$...o...w.;.....*).......X..2.,....EAC...`..}........ .

                                                              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 - Linux
                                                              ABI Version:0
                                                              Entry Point Address:0xd6cc
                                                              Flags:0x4000002
                                                              ELF Header Size:52
                                                              Program Header Offset:52
                                                              Program Header Size:32
                                                              Number of Program Headers:3
                                                              Section Header Offset:0
                                                              Section Header Size:40
                                                              Number of Section Headers:0
                                                              Header String Table Index:0
                                                              TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                                                              LOAD0x00x80000x80000x68cf0x68cf7.93700x5R E0x8000
                                                              LOAD0x00x100000x100000x00x108a80.00000x6RW 0x8000
                                                              GNU_STACK0x00x00x00x00x00.00000x7RWE0x4
                                                              TimestampSource PortDest PortSource IPDest IP
                                                              Jul 5, 2024 09:53:43.597121000 CEST43928443192.168.2.2391.189.91.42
                                                              Jul 5, 2024 09:53:48.972318888 CEST42836443192.168.2.2391.189.91.43
                                                              Jul 5, 2024 09:53:50.764044046 CEST4251680192.168.2.23109.202.202.202
                                                              Jul 5, 2024 09:54:04.074166059 CEST43928443192.168.2.2391.189.91.42
                                                              Jul 5, 2024 09:54:16.360411882 CEST42836443192.168.2.2391.189.91.43
                                                              Jul 5, 2024 09:54:20.455837965 CEST4251680192.168.2.23109.202.202.202
                                                              Jul 5, 2024 09:54:45.028470039 CEST43928443192.168.2.2391.189.91.42

                                                              System Behavior

                                                              Start time (UTC):07:53:35
                                                              Start date (UTC):05/07/2024
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):07:53:35
                                                              Start date (UTC):05/07/2024
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.6H7I0iaIFI /tmp/tmp.cvE0P4snFx /tmp/tmp.B7wEQI0wtu
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                                              Start time (UTC):07:53:35
                                                              Start date (UTC):05/07/2024
                                                              Path:/usr/bin/dash
                                                              Arguments:-
                                                              File size:129816 bytes
                                                              MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                                              Start time (UTC):07:53:35
                                                              Start date (UTC):05/07/2024
                                                              Path:/usr/bin/rm
                                                              Arguments:rm -f /tmp/tmp.6H7I0iaIFI /tmp/tmp.cvE0P4snFx /tmp/tmp.B7wEQI0wtu
                                                              File size:72056 bytes
                                                              MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                                              Start time (UTC):07:53:40
                                                              Start date (UTC):05/07/2024
                                                              Path:/tmp/GbY7rLP11G.elf
                                                              Arguments:/tmp/GbY7rLP11G.elf
                                                              File size:4956856 bytes
                                                              MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1