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Linux Analysis Report
meihao.mips.elf

Overview

General Information

Sample name:meihao.mips.elf
Analysis ID:1671912
MD5:abe71a653717e4e81eb7ae59739d4704
SHA1:c0a14367a8d153b5fd937942005ac7c7e46d759b
SHA256:00ab855b892c1b35aaa81cb650d8bda5de5f4e51434a93272afd3d90c3a9723a
Tags:elfuser-abuse_ch
Infos:

Detection

Score:52
Range:0 - 100

Signatures

Multi AV Scanner detection for submitted file
Sample is packed with UPX
ELF contains segments with high entropy indicating compressed/encrypted content
Sample contains only a LOAD segment without any section mappings
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious
Joe Sandbox version:42.0.0 Malachite
Analysis ID:1671912
Start date and time:2025-04-23 12:12:30 +02:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 26s
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:meihao.mips.elf
Detection:MAL
Classification:mal52.evad.linELF@0/0@2/0
Command:/tmp/meihao.mips.elf
PID:5490
Exit Code:133
Exit Code Info:
Killed:False
Standard Output:

Standard Error:qemu: uncaught target signal 5 (Trace/breakpoint trap) - core dumped
  • system is lnxubuntu20
  • meihao.mips.elf (PID: 5490, Parent: 5412, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/meihao.mips.elf
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: meihao.mips.elfReversingLabs: Detection: 38%
Source: unknownUDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknownUDP traffic detected without corresponding DNS query: 1.1.1.1
Source: global trafficDNS traffic detected: DNS query: daisy.ubuntu.com
Source: meihao.mips.elfString found in binary or memory: http://upx.sf.net
Source: LOAD without section mappingsProgram segment: 0x400000
Source: classification engineClassification label: mal52.evad.linELF@0/0@2/0

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 3.96 Copyright (C) 1996-2020 the UPX Team. All Rights Reserved. $
Source: meihao.mips.elfSubmission file: segment LOAD with 7.9044 entropy (max. 8.0)
Source: /tmp/meihao.mips.elf (PID: 5490)Queries kernel information via 'uname': Jump to behavior
Source: meihao.mips.elf, 5490.1.0000565072676000.00005650726fd000.rw-.sdmpBinary or memory string: hrPV!/etc/qemu-binfmt/mips
Source: meihao.mips.elf, 5490.1.0000565072676000.00005650726fd000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/mips
Source: meihao.mips.elf, 5490.1.00007ffdcf9b0000.00007ffdcf9d1000.rw-.sdmpBinary or memory string: /usr/bin/qemu-mips
Source: meihao.mips.elf, 5490.1.00007ffdcf9b0000.00007ffdcf9d1000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 5 (Trace/breakpoint trap) - core dumped
Source: meihao.mips.elf, 5490.1.00007ffdcf9b0000.00007ffdcf9d1000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-mips/tmp/meihao.mips.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/meihao.mips.elf
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
Non-Application Layer Protocol
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: 1671912 Sample: meihao.mips.elf Startdate: 23/04/2025 Architecture: LINUX Score: 52 8 daisy.ubuntu.com 2->8 10 Multi AV Scanner detection for submitted file 2->10 12 Sample is packed with UPX 2->12 6 meihao.mips.elf 2->6         started        signatures3 process4

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


windows-stand
SourceDetectionScannerLabelLink
meihao.mips.elf39%ReversingLabsLinux.Worm.Mirai
No Antivirus matches
No Antivirus matches
No Antivirus matches

Download Network PCAP: filteredfull

NameIPActiveMaliciousAntivirus DetectionReputation
daisy.ubuntu.com
162.213.35.24
truefalse
    high
    NameSourceMaliciousAntivirus DetectionReputation
    http://upx.sf.netmeihao.mips.elffalse
      high
      No contacted IP infos
      No context
      MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
      daisy.ubuntu.commeihao.arm5.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.25
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      meihao.arm5.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.24
      meihao.x86.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.25
      sshd.elfGet hashmaliciousUnknownBrowse
      • 162.213.35.24
      Demon.arm4.elfGet hashmaliciousGafgyt, MiraiBrowse
      • 162.213.35.24
      Demon.x86.elfGet hashmaliciousGafgyt, MiraiBrowse
      • 162.213.35.24
      Demon.arm6.elfGet hashmaliciousGafgyt, MiraiBrowse
      • 162.213.35.24
      Demon.sparc.elfGet hashmaliciousGafgyt, MiraiBrowse
      • 162.213.35.25
      Demon.i686.elfGet hashmaliciousGafgyt, MiraiBrowse
      • 162.213.35.24
      No context
      No context
      No context
      No created / dropped files found
      File type:ELF 32-bit MSB executable, MIPS, MIPS-I version 1 (SYSV), statically linked, no section header
      Entropy (8bit):7.900672484287365
      TrID:
      • ELF Executable and Linkable format (Linux) (4029/14) 50.16%
      • ELF Executable and Linkable format (generic) (4004/1) 49.84%
      File name:meihao.mips.elf
      File size:32'032 bytes
      MD5:abe71a653717e4e81eb7ae59739d4704
      SHA1:c0a14367a8d153b5fd937942005ac7c7e46d759b
      SHA256:00ab855b892c1b35aaa81cb650d8bda5de5f4e51434a93272afd3d90c3a9723a
      SHA512:a6e64cc8c1a56d00fa88b801275599b56689c77158795fbd7bf55865e84f9c0d9a9d5e0145907ac1e089aae115d7a8b13e4caf83418e884491fd9d18c83f6557
      SSDEEP:768:SmbWj3sq3EkogqlowdITUIzkPFplFJgGlzDpuWTj:SmbWjFUgrwa4OKBVEWTj
      TLSH:E5E2E1386A0A15A1D8FBD1BC91690F413FB50BF1E127FF893C51C6578928797688ECE1
      File Content Preview:.ELF.....................@g....4.........4. ...(.............@...@....{...{..................A...A........{..........2).UPX!.X........yL..yL.......U.......?.E.h4...@b..) ..]....E..V(..j..y.r`.c.....}Cy..l9.....F5....Y-......T;.]..6.&......j\..ch..........

      ELF header

      Class:ELF32
      Data:2's complement, big endian
      Version:1 (current)
      Machine:MIPS R3000
      Version Number:0x1
      Type:EXEC (Executable file)
      OS/ABI:UNIX - System V
      ABI Version:0
      Entry Point Address:0x406798
      Flags:0x1007
      ELF Header Size:52
      Program Header Offset:52
      Program Header Size:32
      Number of Program Headers:2
      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
      LOAD0x00x4000000x4000000x7be10x7be17.90440x5R E0x10000
      LOAD0x00x4100000x4100000x00x47ba80.00000x6RW 0x10000

      Download Network PCAP: filteredfull

      TimestampSource PortDest PortSource IPDest IP
      Apr 23, 2025 12:13:18.761079073 CEST3925953192.168.2.141.1.1.1
      Apr 23, 2025 12:13:18.761147976 CEST3710453192.168.2.141.1.1.1
      Apr 23, 2025 12:13:18.901807070 CEST53392591.1.1.1192.168.2.14
      Apr 23, 2025 12:13:18.940309048 CEST53371041.1.1.1192.168.2.14
      TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
      Apr 23, 2025 12:13:18.761079073 CEST192.168.2.141.1.1.10xaa64Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
      Apr 23, 2025 12:13:18.761147976 CEST192.168.2.141.1.1.10x5434Standard query (0)daisy.ubuntu.com28IN (0x0001)false
      TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
      Apr 23, 2025 12:13:18.901807070 CEST1.1.1.1192.168.2.140xaa64No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
      Apr 23, 2025 12:13:18.901807070 CEST1.1.1.1192.168.2.140xaa64No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

      System Behavior

      Start time (UTC):10:13:16
      Start date (UTC):23/04/2025
      Path:/tmp/meihao.mips.elf
      Arguments:/tmp/meihao.mips.elf
      File size:5777432 bytes
      MD5 hash:0083f1f0e77be34ad27f849842bbb00c