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Linux Analysis Report
dlr.arm6.elf

Overview

General Information

Sample name:dlr.arm6.elf
Analysis ID:1644396
MD5:aac765f05eddd62c52ef3a5149dd2511
SHA1:eaef82a9d7e93becaaf210e1987a23af22e07850
SHA256:f234c78d12b3931142416895fb1e22a325cd8c65f3bb9bbd64cd80e4a9fc198c
Tags:elfuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100

Signatures

Multi AV Scanner detection for submitted file
Creates hidden files and/or directories
Creates hidden files without content (potentially used as a mutex)
HTTP GET or POST without a user agent
Sample has stripped symbol table
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious
Joe Sandbox version:42.0.0 Malachite
Analysis ID:1644396
Start date and time:2025-03-20 15:10:23 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 5m 5s
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:dlr.arm6.elf
Detection:MAL
Classification:mal48.linELF@0/0@0/0
Command:/tmp/dlr.arm6.elf
PID:5465
Exit Code:4
Exit Code Info:
Killed:False
Standard Output:
AAA
Standard Error:
  • system is lnxubuntu20
  • dlr.arm6.elf (PID: 5465, Parent: 5383, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/dlr.arm6.elf
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: dlr.arm6.elfVirustotal: Detection: 29%Perma Link
Source: dlr.arm6.elfReversingLabs: Detection: 44%
Source: global trafficHTTP traffic detected: GET /bins/arm6 HTTP/Data Raw: Data Ascii:
Source: unknownTCP traffic detected without corresponding DNS query: 156.253.227.12
Source: unknownTCP traffic detected without corresponding DNS query: 156.253.227.12
Source: unknownTCP traffic detected without corresponding DNS query: 156.253.227.12
Source: unknownTCP traffic detected without corresponding DNS query: 156.253.227.12
Source: unknownTCP traffic detected without corresponding DNS query: 156.253.227.12
Source: global trafficHTTP traffic detected: GET /bins/arm6 HTTP/Data Raw: Data Ascii:
Source: ELF static info symbol of initial sample.symtab present: no
Source: classification engineClassification label: mal48.linELF@0/0@0/0
Source: /tmp/dlr.arm6.elf (PID: 5465)File: /tmp/.2351Jump to behavior
Source: /tmp/dlr.arm6.elf (PID: 5465)Empty hidden file: /tmp/.2351Jump to behavior
Source: /tmp/dlr.arm6.elf (PID: 5465)Queries kernel information via 'uname': Jump to behavior
Source: dlr.arm6.elf, 5465.1.00007ffc2374f000.00007ffc23770000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/dlr.arm6.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/dlr.arm6.elf
Source: dlr.arm6.elf, 5465.1.000055eb4f6f5000.000055eb4f823000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: dlr.arm6.elf, 5465.1.000055eb4f6f5000.000055eb4f823000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: dlr.arm6.elf, 5465.1.00007ffc2374f000.00007ffc23770000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath Interception1
Hide Artifacts
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 Scripts1
Hidden Files and Directories
LSASS MemoryApplication Window DiscoveryRemote Desktop ProtocolData from Removable Media1
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 Drive1
Ingress Tool Transfer
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: 1644396 Sample: dlr.arm6.elf Startdate: 20/03/2025 Architecture: LINUX Score: 48 8 156.253.227.12, 57840, 80 POWERLINE-AS-APPOWERLINEDATACENTERHK Seychelles 2->8 10 Multi AV Scanner detection for submitted file 2->10 6 dlr.arm6.elf 2->6         started        signatures3 process4
SourceDetectionScannerLabelLink
dlr.arm6.elf30%VirustotalBrowse
dlr.arm6.elf44%ReversingLabsLinux.Backdoor.Mirai
No Antivirus matches
No Antivirus matches
No Antivirus matches

Download Network PCAP: filteredfull

No contacted domains info
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs
IPDomainCountryFlagASNASN NameMalicious
156.253.227.12
unknownSeychelles
132839POWERLINE-AS-APPOWERLINEDATACENTERHKfalse
MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
156.253.227.12dlr.mips.elfGet hashmaliciousUnknownBrowse
  • /bins/mips
No context
MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
POWERLINE-AS-APPOWERLINEDATACENTERHKdlr.mips.elfGet hashmaliciousUnknownBrowse
  • 156.253.227.12
hoho.sparc.elfGet hashmaliciousUnknownBrowse
  • 45.202.220.126
dokument wysy#U00c5 kowy faktury nr 52-FK-25.jsGet hashmaliciousFormBookBrowse
  • 45.202.215.236
dokument wysy#U00c5 kowy faktury nr 52-FK-25.jsGet hashmaliciousFormBookBrowse
  • 45.202.215.236
EU-Business-Register 2024-2025#U00b7pdf.vbsGet hashmaliciousFormBook, GuLoaderBrowse
  • 160.124.31.74
ID2025-019#U00b7pdf.vbsGet hashmaliciousFormBook, GuLoaderBrowse
  • 160.124.31.74
PE2025-019#U00b7pdf.vbsGet hashmaliciousFormBook, GuLoaderBrowse
  • 160.124.31.74
splspc.elfGet hashmaliciousUnknownBrowse
  • 154.193.113.237
http://www.go2-etax.saprosma.comGet hashmaliciousUnknownBrowse
  • 45.202.210.110
http://prim-loginetax.pedicsh.comGet hashmaliciousUnknownBrowse
  • 45.202.210.110
No context
No context
No created / dropped files found
File type:ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
Entropy (8bit):4.821209850798235
TrID:
  • ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:dlr.arm6.elf
File size:1'448 bytes
MD5:aac765f05eddd62c52ef3a5149dd2511
SHA1:eaef82a9d7e93becaaf210e1987a23af22e07850
SHA256:f234c78d12b3931142416895fb1e22a325cd8c65f3bb9bbd64cd80e4a9fc198c
SHA512:12f662dc66dedfa9f1c3dda76bef5db095bfd1487e12383d5871727132b533b4d4e28d6a740880a11b10e778dbdf216f74d5751528fd380fb7c0ea7a20be38fa
SSDEEP:24:lpKGpa7Urz/jlfdXK1hUVev3gRGaJ9iMPBBuk2nlxrR+zHGS90t:/KGpa7UrLZy/+JpBukulxrsHGS90
TLSH:F9312E9862D09EF8CC9491BEAD57032173689F80E0C733A3820C7715BD2AE3C5C27086
File Content Preview:.ELF..............(.........4...........4. ...(.....................@...@...............@...@...@...................Q.td.........................................8...<...4...........(.."...#...../...-.......M.................../...-.......M................

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 - System V
ABI Version:0
Entry Point Address:0x838c
Flags:0x4000002
ELF Header Size:52
Program Header Offset:52
Program Header Size:32
Number of Program Headers:3
Section Header Offset:1168
Section Header Size:40
Number of Section Headers:7
Header String Table Index:6
NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
NULL0x00x00x00x00x0000
.textPROGBITS0x80a00xa00x35c0x00x6AX0016
.rodataPROGBITS0x83fc0x3fc0x440x10x32AMS004
.gotPROGBITS0x104400x4400xc0x40x3WA004
.bssNOBITS0x1044c0x44c0x80x00x3WA004
.ARM.attributesARM_ATTRIBUTES0x00x44c0x100x00x0001
.shstrtabSTRTAB0x00x45c0x330x00x0001
TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
LOAD0x00x80000x80000x4400x4405.24420x5R E0x8000.text .rodata
LOAD0x4400x104400x104400xc0x140.00000x6RW 0x8000.got .bss
GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

Download Network PCAP: filteredfull

TimestampSource PortDest PortSource IPDest IP
Mar 20, 2025 15:11:26.527118921 CET5784080192.168.2.13156.253.227.12
Mar 20, 2025 15:11:26.719806910 CET8057840156.253.227.12192.168.2.13
Mar 20, 2025 15:11:26.720053911 CET5784080192.168.2.13156.253.227.12
Mar 20, 2025 15:11:26.721462965 CET5784080192.168.2.13156.253.227.12
Mar 20, 2025 15:11:26.929842949 CET8057840156.253.227.12192.168.2.13
Mar 20, 2025 15:11:46.942651987 CET8057840156.253.227.12192.168.2.13
Mar 20, 2025 15:11:46.946439028 CET5784080192.168.2.13156.253.227.12
Mar 20, 2025 15:11:47.107553005 CET5784080192.168.2.13156.253.227.12
Mar 20, 2025 15:11:47.310950994 CET8057840156.253.227.12192.168.2.13
Session IDSource IPSource PortDestination IPDestination Port
0192.168.2.1357840156.253.227.1280
TimestampBytes transferredDirectionData
Mar 20, 2025 15:11:26.721462965 CET33OUTGET /bins/arm6 HTTP/
Data Raw:
Data Ascii:


System Behavior

Start time (UTC):14:11:25
Start date (UTC):20/03/2025
Path:/tmp/dlr.arm6.elf
Arguments:/tmp/dlr.arm6.elf
File size:4956856 bytes
MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1