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Linux Analysis Report
morte.arm5.elf

Overview

General Information

Sample name:morte.arm5.elf
Analysis ID:1646183
MD5:60b1394f6911153c8e00c3c8131ff8a8
SHA1:f55827f439d4cc0886fb813b9520d690504d730b
SHA256:b3b975934a900255b3a9e3eb66261b186420c43c1d40c0e9464988944985360f
Tags:elfuser-abuse_ch
Infos:

Detection

Okiru
Score:60
Range:0 - 100

Signatures

Multi AV Scanner detection for submitted file
Yara detected Okiru
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
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:1646183
Start date and time:2025-03-23 15:07:14 +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:morte.arm5.elf
Detection:MAL
Classification:mal60.troj.evad.linELF@0/0@0/0
Command:/tmp/morte.arm5.elf
PID:6241
Exit Code:127
Exit Code Info:
Killed:False
Standard Output:

Standard Error:
  • system is lnxubuntu20
  • morte.arm5.elf (PID: 6241, Parent: 6163, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/morte.arm5.elf
  • cleanup
SourceRuleDescriptionAuthorStrings
6241.1.00007f2f1c017000.00007f2f1c021000.r-x.sdmpJoeSecurity_OkiruYara detected OkiruJoe Security
    Process Memory Space: morte.arm5.elf PID: 6241JoeSecurity_OkiruYara detected OkiruJoe Security
      No Suricata rule has matched

      Click to jump to signature section

      Show All Signature Results

      AV Detection

      barindex
      Source: morte.arm5.elfVirustotal: Detection: 23%Perma Link
      Source: morte.arm5.elfReversingLabs: Detection: 27%
      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: morte.arm5.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: mal60.troj.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 3.94 Copyright (C) 1996-2017 the UPX Team. All Rights Reserved. $
      Source: morte.arm5.elfSubmission file: segment LOAD with 7.907 entropy (max. 8.0)
      Source: /tmp/morte.arm5.elf (PID: 6241)Queries kernel information via 'uname': Jump to behavior
      Source: morte.arm5.elf, 6241.1.00007fff797ba000.00007fff797db000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/morte.arm5.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/morte.arm5.elf
      Source: morte.arm5.elf, 6241.1.00005610e8994000.00005610e8be2000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
      Source: morte.arm5.elf, 6241.1.00005610e8994000.00005610e8be2000.rw-.sdmpBinary or memory string: V!/etc/qemu-binfmt/arm
      Source: morte.arm5.elf, 6241.1.00007fff797ba000.00007fff797db000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm

      Stealing of Sensitive Information

      barindex
      Source: Yara matchFile source: 6241.1.00007f2f1c017000.00007f2f1c021000.r-x.sdmp, type: MEMORY
      Source: Yara matchFile source: Process Memory Space: morte.arm5.elf PID: 6241, type: MEMORYSTR

      Remote Access Functionality

      barindex
      Source: Yara matchFile source: 6241.1.00007f2f1c017000.00007f2f1c021000.r-x.sdmp, type: MEMORY
      Source: Yara matchFile source: Process Memory Space: morte.arm5.elf PID: 6241, type: MEMORYSTR
      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 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: 1646183 Sample: morte.arm5.elf Startdate: 23/03/2025 Architecture: LINUX Score: 60 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 16 Yara detected Okiru 2->16 18 Sample is packed with UPX 2->18 6 morte.arm5.elf 2->6         started        signatures3 process4
      SourceDetectionScannerLabelLink
      morte.arm5.elf23%VirustotalBrowse
      morte.arm5.elf28%ReversingLabsLinux.Backdoor.Bushido
      No Antivirus matches
      No Antivirus matches
      No Antivirus matches

      Download Network PCAP: filteredfull

      No contacted domains info
      NameSourceMaliciousAntivirus DetectionReputation
      http://upx.sf.netmorte.arm5.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
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                                                No context
                                                No context
                                                No created / dropped files found
                                                File type:ELF 32-bit LSB executable, ARM, version 1 (ARM), statically linked, no section header
                                                Entropy (8bit):7.9042674175753636
                                                TrID:
                                                • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                                File name:morte.arm5.elf
                                                File size:20'544 bytes
                                                MD5:60b1394f6911153c8e00c3c8131ff8a8
                                                SHA1:f55827f439d4cc0886fb813b9520d690504d730b
                                                SHA256:b3b975934a900255b3a9e3eb66261b186420c43c1d40c0e9464988944985360f
                                                SHA512:4f3a40a0b07e117fde3d8ba812fc6a4dd7cfe859ef8fe5a49ee66afe53e5d59db40d896a6cbe7d249bfcfd27ea182a919807f04a9aa5dacbea8ed3101dc33376
                                                SSDEEP:384:3b6xzPrHJfWroGzhQDodnUM2UfCtQPc1f0vzPjLIRby+YMMhymdGUop5hVy:3b67fYpaDod7/CtR1faIRm+8s3Uoz7y
                                                TLSH:B192C034050EA070CE58A234DE7DC2C3A7A9137BE5FD72A56F044E7C9AC5505A7F91E2
                                                File Content Preview:.ELF...a..........(.........4...........4. ...(......................N...N..............(-..(...(...................Q.td..............................CvUPX!........\...\.......o..........?.E.h;.}...^......7......./...\..,...=.-.....8.t.|.j...H0!.2K_u3....

                                                ELF header

                                                Class:ELF32
                                                Data:2's complement, little endian
                                                Version:1 (current)
                                                Machine:ARM
                                                Version Number:0x1
                                                Type:EXEC (Executable file)
                                                OS/ABI:ARM - ABI
                                                ABI Version:0
                                                Entry Point Address:0xbd08
                                                Flags:0x2
                                                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
                                                LOAD0x00x80000x80000x4eb70x4eb77.90700x5R E0x8000
                                                LOAD0x2d280x1ad280x1ad280x00x00.00000x6RW 0x8000
                                                GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

                                                Download Network PCAP: filteredfull

                                                • Total Packets: 7
                                                • 443 (HTTPS)
                                                • 80 (HTTP)
                                                TimestampSource PortDest PortSource IPDest IP
                                                Mar 23, 2025 15:08:03.688615084 CET43928443192.168.2.2391.189.91.42
                                                Mar 23, 2025 15:08:09.063868999 CET42836443192.168.2.2391.189.91.43
                                                Mar 23, 2025 15:08:09.831809044 CET4251680192.168.2.23109.202.202.202
                                                Mar 23, 2025 15:08:25.189687014 CET43928443192.168.2.2391.189.91.42
                                                Mar 23, 2025 15:08:35.428317070 CET42836443192.168.2.2391.189.91.43
                                                Mar 23, 2025 15:08:39.523675919 CET4251680192.168.2.23109.202.202.202
                                                Mar 23, 2025 15:09:06.144248962 CET43928443192.168.2.2391.189.91.42

                                                System Behavior

                                                Start time (UTC):14:08:03
                                                Start date (UTC):23/03/2025
                                                Path:/tmp/morte.arm5.elf
                                                Arguments:/tmp/morte.arm5.elf
                                                File size:4956856 bytes
                                                MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1