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Linux Analysis Report
Mozi.a.elf

Overview

General Information

Sample name:Mozi.a.elf
Analysis ID:1642323
MD5:c4c19826f88e5af0a384672134272847
SHA1:b05e4a626b26f4d0c3913d7070bbb7c8628fb79d
SHA256:29bdce4e474bab89840439c46d736728597692006a92ad231501f350e557fdaa
Tags:elfuser-abuse_ch
Infos:

Detection

Score:68
Range:0 - 100

Signatures

Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
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)
Yara signature match

Classification

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious
Joe Sandbox version:42.0.0 Malachite
Analysis ID:1642323
Start date and time:2025-03-19 02:05:40 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 31s
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:Mozi.a.elf
Detection:MAL
Classification:mal68.evad.linELF@0/0@2/0
Command:/tmp/Mozi.a.elf
PID:5438
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
  • Mozi.a.elf (PID: 5438, Parent: 5355, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/Mozi.a.elf
  • cleanup
SourceRuleDescriptionAuthorStrings
Mozi.a.elfLinux_Packer_Patched_UPX_62e11c64unknownunknown
  • 0x78:$a: 55 50 58 21 0A 58 0D 89 00 00 00 00 00 00 00 00 00 00 00 00
SourceRuleDescriptionAuthorStrings
5438.1.00007fd09c400000.00007fd09c421000.r-x.sdmpLinux_Packer_Patched_UPX_62e11c64unknownunknown
  • 0x78:$a: 55 50 58 21 0A 58 0D 89 00 00 00 00 00 00 00 00 00 00 00 00
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: Mozi.a.elfAvira: detected
Source: Mozi.a.elfVirustotal: Detection: 59%Perma Link
Source: Mozi.a.elfReversingLabs: Detection: 32%
Source: global trafficDNS traffic detected: DNS query: daisy.ubuntu.com
Source: Mozi.a.elfString found in binary or memory: http://upx.sf.net

System Summary

barindex
Source: Mozi.a.elf, type: SAMPLEMatched rule: Linux_Packer_Patched_UPX_62e11c64 Author: unknown
Source: 5438.1.00007fd09c400000.00007fd09c421000.r-x.sdmp, type: MEMORYMatched rule: Linux_Packer_Patched_UPX_62e11c64 Author: unknown
Source: LOAD without section mappingsProgram segment: 0x400000
Source: Mozi.a.elf, type: SAMPLEMatched rule: Linux_Packer_Patched_UPX_62e11c64 reference_sample = 02f81a1e1edcb9032a1d7256a002b11e1e864b2e9989f5d24ea1c9b507895669, os = linux, severity = x86, creation_date = 2021-06-08, scan_context = file, reference = https://cujo.com/upx-anti-unpacking-techniques-in-iot-malware/, license = Elastic License v2, threat_name = Linux.Packer.Patched_UPX, fingerprint = 3297b5c63e70c557e71b739428b453039b142e1e04c2ab15eea4627d023b686d, id = 62e11c64-fc7d-4a0a-9d72-ad53ec3987ff, last_modified = 2021-07-28
Source: 5438.1.00007fd09c400000.00007fd09c421000.r-x.sdmp, type: MEMORYMatched rule: Linux_Packer_Patched_UPX_62e11c64 reference_sample = 02f81a1e1edcb9032a1d7256a002b11e1e864b2e9989f5d24ea1c9b507895669, os = linux, severity = x86, creation_date = 2021-06-08, scan_context = file, reference = https://cujo.com/upx-anti-unpacking-techniques-in-iot-malware/, license = Elastic License v2, threat_name = Linux.Packer.Patched_UPX, fingerprint = 3297b5c63e70c557e71b739428b453039b142e1e04c2ab15eea4627d023b686d, id = 62e11c64-fc7d-4a0a-9d72-ad53ec3987ff, last_modified = 2021-07-28
Source: classification engineClassification label: mal68.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 3.95 Copyright (C) 1996-2018 the UPX Team. All Rights Reserved. $
Source: Mozi.a.elfSubmission file: segment LOAD with 7.8131 entropy (max. 8.0)
Source: /tmp/Mozi.a.elf (PID: 5438)Queries kernel information via 'uname': Jump to behavior
Source: Mozi.a.elf, 5438.1.000055b371ff9000.000055b372080000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/mips
Source: Mozi.a.elf, 5438.1.000055b371ff9000.000055b372080000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/mips
Source: Mozi.a.elf, 5438.1.00007ffcb7e5b000.00007ffcb7e7c000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-mips/tmp/Mozi.a.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/Mozi.a.elf
Source: Mozi.a.elf, 5438.1.00007ffcb7e5b000.00007ffcb7e7c000.rw-.sdmpBinary or memory string: /usr/bin/qemu-mips
Source: Mozi.a.elf, 5438.1.00007ffcb7e5b000.00007ffcb7e7c000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 5 (Trace/breakpoint trap) - 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
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: 1642323 Sample: Mozi.a.elf Startdate: 19/03/2025 Architecture: LINUX Score: 68 8 daisy.ubuntu.com 2->8 10 Malicious sample detected (through community Yara rule) 2->10 12 Antivirus / Scanner detection for submitted sample 2->12 14 Multi AV Scanner detection for submitted file 2->14 16 Sample is packed with UPX 2->16 6 Mozi.a.elf 2->6         started        signatures3 process4

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


windows-stand
SourceDetectionScannerLabelLink
Mozi.a.elf59%VirustotalBrowse
Mozi.a.elf32%ReversingLabsLinux.Trojan.Mirai
Mozi.a.elf100%AviraLINUX/Mirai.ecrbv
No Antivirus matches
No Antivirus matches
No Antivirus matches

Download Network PCAP: filteredfull

NameIPActiveMaliciousAntivirus DetectionReputation
daisy.ubuntu.com
162.213.35.25
truefalse
    high
    NameSourceMaliciousAntivirus DetectionReputation
    http://upx.sf.netMozi.a.elffalse
      high
      No contacted IP infos
      No context
      MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
      daisy.ubuntu.comboatnet.m68k.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.25
      boatnet.arm6.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.25
      boatnet.mpsl.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.24
      boatnet.spc.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.25
      boatnet.arm.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.24
      boatnet.mips.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.24
      boatnet.x86.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.25
      boatnet.ppc.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.25
      FederalmpslAgent.elfGet hashmaliciousMiraiBrowse
      • 162.213.35.24
      FederalppcAgent.elfGet hashmaliciousMiraiBrowse
      • 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):7.808297571402914
      TrID:
      • ELF Executable and Linkable format (Linux) (4029/14) 50.16%
      • ELF Executable and Linkable format (generic) (4004/1) 49.84%
      File name:Mozi.a.elf
      File size:137'480 bytes
      MD5:c4c19826f88e5af0a384672134272847
      SHA1:b05e4a626b26f4d0c3913d7070bbb7c8628fb79d
      SHA256:29bdce4e474bab89840439c46d736728597692006a92ad231501f350e557fdaa
      SHA512:66b2e60b739097844e1cae4e27ed6e5394bbb4a175aa75b1a7acbddc58508105a231e9a6d38662cc3f7fae830ae45291e41afc741725eea39ed33dbceaa2fad0
      SSDEEP:3072:Nc4i0agsmw3Py5CP5HM8EVLUuYtgB5H6oC:Nc/0aNPy54EVAhOaH
      TLSH:39D3128EE926ED95E11B9AF11B3B89947DF5399E81E4D4A8A1CF534323CC343F540B0A
      File Content Preview:.ELF.....................A.X...4.........4. ...(.............@...@...........................C...C...................*.*UPX!.X.....................\....|.$..ELF..........@.`....4..^H... ...(......<...@......ll.....H.W.`.t.T.t..dt.Q.....].M............(...

      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:0x41fb58
      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
      LOAD0x00x4000000x4000000x205a20x205a27.81310x5R E0x10000
      LOAD0x00x4300000x4300000x00x8abf80.00000x6RW 0x10000

      Download Network PCAP: filteredfull

      TimestampSource PortDest PortSource IPDest IP
      Mar 19, 2025 02:06:34.855087042 CET3963053192.168.2.138.8.8.8
      Mar 19, 2025 02:06:34.855145931 CET5420553192.168.2.138.8.8.8
      Mar 19, 2025 02:06:34.861068964 CET53396308.8.8.8192.168.2.13
      Mar 19, 2025 02:06:34.861248016 CET53542058.8.8.8192.168.2.13
      TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
      Mar 19, 2025 02:06:34.855087042 CET192.168.2.138.8.8.80xbb67Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
      Mar 19, 2025 02:06:34.855145931 CET192.168.2.138.8.8.80x4341Standard query (0)daisy.ubuntu.com28IN (0x0001)false
      TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
      Mar 19, 2025 02:06:34.861068964 CET8.8.8.8192.168.2.130xbb67No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false
      Mar 19, 2025 02:06:34.861068964 CET8.8.8.8192.168.2.130xbb67No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false

      System Behavior

      Start time (UTC):01:06:32
      Start date (UTC):19/03/2025
      Path:/tmp/Mozi.a.elf
      Arguments:/tmp/Mozi.a.elf
      File size:5777432 bytes
      MD5 hash:0083f1f0e77be34ad27f849842bbb00c