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Linux Analysis Report
8893Xmi39S.arm5.elf

Overview

General Information

Sample name:8893Xmi39S.arm5.elf
Analysis ID:1626037
MD5:7a9abb07a08c4ed4e185b4a35c4db88b
SHA1:7c9295076abaddd6b297bc47e79464a8b41d75ae
SHA256:477efe6e0ddee3084099b401852cd16cac775740ac409320fe6b585a5a9d0850
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
Executes the "rm" command used to delete files or directories
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:1626037
Start date and time:2025-02-27 22:16:51 +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:8893Xmi39S.arm5.elf
Detection:MAL
Classification:mal52.evad.linELF@0/0@2/0
Command:/tmp/8893Xmi39S.arm5.elf
PID:5521
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
  • 8893Xmi39S.arm5.elf (PID: 5521, Parent: 5440, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/8893Xmi39S.arm5.elf
  • dash New Fork (PID: 5584, Parent: 3675)
  • rm (PID: 5584, Parent: 3675, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.RGuBWzud3I /tmp/tmp.3cnTBr3gzN /tmp/tmp.32ESt0xzDe
  • dash New Fork (PID: 5585, Parent: 3675)
  • rm (PID: 5585, Parent: 3675, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.RGuBWzud3I /tmp/tmp.3cnTBr3gzN /tmp/tmp.32ESt0xzDe
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: 8893Xmi39S.arm5.elfReversingLabs: Detection: 47%
Source: unknownTCP traffic detected without corresponding DNS query: 34.254.182.186
Source: unknownTCP traffic detected without corresponding DNS query: 34.254.182.186
Source: global trafficDNS traffic detected: DNS query: daisy.ubuntu.com
Source: 8893Xmi39S.arm5.elfString found in binary or memory: http://upx.sf.net
Source: unknownNetwork traffic detected: HTTP traffic on port 44524 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 443 -> 44524
Source: LOAD without section mappingsProgram segment: 0x8000
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 3.95 Copyright (C) 1996-2018 the UPX Team. All Rights Reserved. $
Source: /usr/bin/dash (PID: 5584)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.RGuBWzud3I /tmp/tmp.3cnTBr3gzN /tmp/tmp.32ESt0xzDeJump to behavior
Source: /usr/bin/dash (PID: 5585)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.RGuBWzud3I /tmp/tmp.3cnTBr3gzN /tmp/tmp.32ESt0xzDeJump to behavior
Source: 8893Xmi39S.arm5.elfSubmission file: segment LOAD with 7.9644 entropy (max. 8.0)
Source: /tmp/8893Xmi39S.arm5.elf (PID: 5521)Queries kernel information via 'uname': Jump to behavior
Source: 8893Xmi39S.arm5.elf, 5521.1.000055c0ee7e4000.000055c0ee912000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: 8893Xmi39S.arm5.elf, 5521.1.00007ffe7d290000.00007ffe7d2b1000.rw-.sdmpBinary or memory string: unx86_64/usr/bin/qemu-arm/tmp/8893Xmi39S.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/8893Xmi39S.arm5.elf
Source: 8893Xmi39S.arm5.elf, 5521.1.000055c0ee7e4000.000055c0ee912000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: 8893Xmi39S.arm5.elf, 5521.1.00007ffe7d290000.00007ffe7d2b1000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: 8893Xmi39S.arm5.elf, 5521.1.00007ffe7d290000.00007ffe7d2b1000.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
Non-Application Layer Protocol
Exfiltration Over BluetoothNetwork Denial of Service
Email AddressesDNS ServerDomain AccountsAtLogon Script (Windows)Logon Script (Windows)Obfuscated Files or InformationSecurity Account ManagerQuery RegistrySMB/Windows Admin SharesData from Network Shared Drive2
Application Layer Protocol
Automated ExfiltrationData Encrypted for Impact
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: 1626037 Sample: 8893Xmi39S.arm5.elf Startdate: 27/02/2025 Architecture: LINUX Score: 52 12 34.254.182.186, 443, 44524 AMAZON-02US United States 2->12 14 daisy.ubuntu.com 2->14 16 Multi AV Scanner detection for submitted file 2->16 18 Sample is packed with UPX 2->18 6 dash rm 2->6         started        8 dash rm 2->8         started        10 8893Xmi39S.arm5.elf 2->10         started        signatures3 process4
SourceDetectionScannerLabelLink
8893Xmi39S.arm5.elf47%ReversingLabsLinux.Network.LightAidra
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.net8893Xmi39S.arm5.elffalse
      high
      • No. of IPs < 25%
      • 25% < No. of IPs < 50%
      • 50% < No. of IPs < 75%
      • 75% < No. of IPs
      IPDomainCountryFlagASNASN NameMalicious
      34.254.182.186
      unknownUnited States
      16509AMAZON-02USfalse
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                          • 143.204.98.43
                          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):7.971472994161156
                          TrID:
                          • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                          File name:8893Xmi39S.arm5.elf
                          File size:45'220 bytes
                          MD5:7a9abb07a08c4ed4e185b4a35c4db88b
                          SHA1:7c9295076abaddd6b297bc47e79464a8b41d75ae
                          SHA256:477efe6e0ddee3084099b401852cd16cac775740ac409320fe6b585a5a9d0850
                          SHA512:9ba44922480615eb6e32931b46dd65a29cb7fd80bd6c4b87b49cb5c9ea966c2f77088f4ba2f6eb55481d392a82fae4dbad7df9244e27611b7e89aad0f93943b8
                          SSDEEP:768:PUrTQ11NNwEB5HwjVGJ1MWNYdTKD8NEo5b+joy3UlGEeDuFf0S+Nz:P11BijVGJ2dTNQoGPDkC
                          TLSH:5B13F20B4344A530C1F46EB1821BD3893E291EF8E7C9215267C510BB7B490B9AF6B79B
                          File Content Preview:.ELF...a..........(.....\...4...........4. ...(.....................$...$...........................................Q.td............................K..gUPX!.........A...A......S..........?.E.h;.}...^..........e.;.P..%..9V...7.+]..R%..G..fW.1C......$..!I.,

                          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:0xff5c
                          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
                          LOAD0x00x80000x80000x91240x91247.96440x5R E0x8000
                          LOAD0x00x180000x180000x00x1a7e00.00000x6RW 0x8000
                          GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

                          Download Network PCAP: filteredfull

                          • Total Packets: 4
                          • 443 (HTTPS)
                          • 53 (DNS)
                          TimestampSource PortDest PortSource IPDest IP
                          Feb 27, 2025 22:18:12.321306944 CET44524443192.168.2.1534.254.182.186
                          Feb 27, 2025 22:18:12.327385902 CET4434452434.254.182.186192.168.2.15
                          Feb 27, 2025 22:18:12.327486992 CET44524443192.168.2.1534.254.182.186
                          TimestampSource PortDest PortSource IPDest IP
                          Feb 27, 2025 22:17:43.940277100 CET5634453192.168.2.158.8.8.8
                          Feb 27, 2025 22:17:43.940408945 CET5830553192.168.2.158.8.8.8
                          Feb 27, 2025 22:17:43.947021961 CET53563448.8.8.8192.168.2.15
                          Feb 27, 2025 22:17:43.947359085 CET53583058.8.8.8192.168.2.15
                          TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
                          Feb 27, 2025 22:17:43.940277100 CET192.168.2.158.8.8.80xa04eStandard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
                          Feb 27, 2025 22:17:43.940408945 CET192.168.2.158.8.8.80xd1d2Standard query (0)daisy.ubuntu.com28IN (0x0001)false
                          TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
                          Feb 27, 2025 22:17:43.947021961 CET8.8.8.8192.168.2.150xa04eNo error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
                          Feb 27, 2025 22:17:43.947021961 CET8.8.8.8192.168.2.150xa04eNo error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

                          System Behavior

                          Start time (UTC):21:17:42
                          Start date (UTC):27/02/2025
                          Path:/tmp/8893Xmi39S.arm5.elf
                          Arguments:/tmp/8893Xmi39S.arm5.elf
                          File size:4956856 bytes
                          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

                          Start time (UTC):21:18:11
                          Start date (UTC):27/02/2025
                          Path:/usr/bin/dash
                          Arguments:-
                          File size:129816 bytes
                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                          Start time (UTC):21:18:11
                          Start date (UTC):27/02/2025
                          Path:/usr/bin/rm
                          Arguments:rm -f /tmp/tmp.RGuBWzud3I /tmp/tmp.3cnTBr3gzN /tmp/tmp.32ESt0xzDe
                          File size:72056 bytes
                          MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                          Start time (UTC):21:18:11
                          Start date (UTC):27/02/2025
                          Path:/usr/bin/dash
                          Arguments:-
                          File size:129816 bytes
                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                          Start time (UTC):21:18:11
                          Start date (UTC):27/02/2025
                          Path:/usr/bin/rm
                          Arguments:rm -f /tmp/tmp.RGuBWzud3I /tmp/tmp.3cnTBr3gzN /tmp/tmp.32ESt0xzDe
                          File size:72056 bytes
                          MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b