Joe Sandbox Cloud Basic Analysis Report
Edit tour

Linux Analysis Report
frosty.arm6.elf

Overview

General Information

Sample name:frosty.arm6.elf
Analysis ID:1648908
MD5:6c920bb1f0a2c4a5d55e27a08e905fe6
SHA1:3ec149e88af307440196c3b8d11ffae77f5d26e0
SHA256:e956e184d5165da610dd63bd960909a988f5483b2861dfee3e986c9296d38066
Tags:elfuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100

Signatures

Multi AV Scanner detection for submitted file
Sample has stripped symbol table
Uses the "uname" system call to query kernel version information (possible evasion)

Classification

RansomwareSpreadingPhishingBankerTrojan / BotAdwareSpywareExploiterEvaderMinercleansuspiciousmalicious

General Information

Joe Sandbox version:42.0.0 Malachite
Analysis ID:1648908
Start date and time:2025-03-26 10:21:44 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 39s
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:frosty.arm6.elf
Detection:MAL
Classification:mal48.linELF@0/0@2/0
  • VT rate limit hit for: http://154.213.189.145/icy.sh

Runtime Messages

Command:/tmp/frosty.arm6.elf
PID:5490
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

Process Tree

  • system is lnxubuntu20
  • frosty.arm6.elf (PID: 5490, Parent: 5409, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/frosty.arm6.elf
  • cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

  • • AV Detection
  • • Networking
  • • System Summary
  • • Malware Analysis System Evasion

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: frosty.arm6.elfVirustotal: Detection: 54%Perma Link
Source: frosty.arm6.elfReversingLabs: Detection: 58%
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: frosty.arm6.elfString found in binary or memory: http://154.213.189.145/icy.sh
Source: frosty.arm6.elfString found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
Source: frosty.arm6.elfString found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/
Source: ELF static info symbol of initial sample.symtab present: no
Source: classification engineClassification label: mal48.linELF@0/0@2/0
Source: /tmp/frosty.arm6.elf (PID: 5490)Queries kernel information via 'uname': Jump to behavior
Source: frosty.arm6.elf, 5490.1.00007fffe1d2f000.00007fffe1d50000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/frosty.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/frosty.arm6.elf
Source: frosty.arm6.elf, 5490.1.0000559457cbb000.0000559457de9000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: frosty.arm6.elf, 5490.1.0000559457cbb000.0000559457de9000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: frosty.arm6.elf, 5490.1.00007fffe1d2f000.00007fffe1d50000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: frosty.arm6.elf, 5490.1.00007fffe1d2f000.00007fffe1d50000.rw-.sdmpBinary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Mitre Att&ck Matrix

ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
Gather Victim Identity InformationAcquire InfrastructureValid AccountsWindows Management InstrumentationPath InterceptionPath InterceptionDirect Volume AccessOS 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

Malware Configuration

⊘No configs have been found

Behavior Graph

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: 1648908 Sample: frosty.arm6.elf Startdate: 26/03/2025 Architecture: LINUX Score: 48 8 daisy.ubuntu.com 2->8 10 Multi AV Scanner detection for submitted file 2->10 6 frosty.arm6.elf 2->6         started        signatures3 process4

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

SourceDetectionScannerLabelLink
frosty.arm6.elf55%VirustotalBrowse
frosty.arm6.elf58%ReversingLabsLinux.Trojan.Mirai

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Download Network PCAP: filtered – full

Contacted Domains

NameIPActiveMaliciousAntivirus DetectionReputation
daisy.ubuntu.com
162.213.35.24
truefalse
    		high
    NameSourceMaliciousAntivirus DetectionReputation
    http://154.213.189.145/icy.shfrosty.arm6.elffalse
      		unknown
      http://schemas.xmlsoap.org/soap/encoding/frosty.arm6.elffalse
        		high
        http://schemas.xmlsoap.org/soap/envelope/frosty.arm6.elffalse
          		high

          World Map of Contacted IPs

          ⊘No contacted IP infos

          Joe Sandbox View / Context

          IPs

          ⊘No context

          Domains

          MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
          daisy.ubuntu.comfrosty.arm7.elfGet hashmaliciousUnknownBrowse
          • 162.213.35.24
          GoldAge3ATOppc.elfGet hashmaliciousUnknownBrowse
          • 162.213.35.25
          GoldAge3ATOx86.elfGet hashmaliciousUnknownBrowse
          • 162.213.35.25
          GoldAge3ATOx64.elfGet hashmaliciousUnknownBrowse
          • 162.213.35.24
          boatnet.arm7.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.25
          boatnet.m68k.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.24
          boatnet.mpsl.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.25
          boatnet.spc.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.24
          boatnet.ppc.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.25
          boatnet.sh4.elfGet hashmaliciousMiraiBrowse
          • 162.213.35.25

          ASNs

          ⊘No context

          JA3 Fingerprints

          ⊘No context

          Dropped Files

          ⊘No context

          Created / dropped Files

          ⊘No created / dropped files found

          Static File Info

          General

          File type:ELF 32-bit LSB executable, ARM, EABI4 version 1 (SYSV), statically linked, stripped
          Entropy (8bit):5.991440852128615
          TrID:
          • ELF Executable and Linkable format (generic) (4004/1) 100.00%
          File name:frosty.arm6.elf
          File size:58'668 bytes
          MD5:6c920bb1f0a2c4a5d55e27a08e905fe6
          SHA1:3ec149e88af307440196c3b8d11ffae77f5d26e0
          SHA256:e956e184d5165da610dd63bd960909a988f5483b2861dfee3e986c9296d38066
          SHA512:eb774987a145de980baf6f276cf604c2b46b91a694d54ac1fcbe4ff2441d86ec5fdbf9992611808ffa43e699da616ac2d279730e44b860645a3620b83ab95dcf
          SSDEEP:1536:Xxnk7Xrb6uBHH7Gdvp3G8RRIHiXyyBBFCAO:EruuBMvTyyBBF
          TLSH:7643F796BDC19F01D4C525BAFE1E118E331317A8E3DFB2135E14AF64678B82B0E7A415
          File Content Preview:.ELF..............(.....T...4...L.......4. ...(.....................................................................Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../...............-.@0....S

          Static ELF Info

          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:0x8154
          Flags:0x4000002
          ELF Header Size:52
          Program Header Offset:52
          Program Header Size:32
          Number of Program Headers:3
          Section Header Offset:58188
          Section Header Size:40
          Number of Section Headers:12
          Header String Table Index:11

          Sections

          NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
          NULL0x00x00x00x00x0000
          .initPROGBITS0x80940x940x100x00x6AX004
          .textPROGBITS0x80b00xb00xc4600x00x6AX0016
          .finiPROGBITS0x145100xc5100x100x00x6AX004
          .rodataPROGBITS0x145200xc5200x118c0x00x2A004
          .init_arrayINIT_ARRAY0x1e0040xe0080x40x00x3WA004
          .fini_arrayFINI_ARRAY0x1e0080xe00c0x40x00x3WA004
          .gotPROGBITS0x1e0100xe0140x740x40x3WA004
          .dataPROGBITS0x1e0840xe0880x2540x00x3WA004
          .bssNOBITS0x1e2d80xe2dc0x26f80x00x3WA004
          .ARM.attributesARM_ATTRIBUTES0x00xe2dc0x100x00x0001
          .shstrtabSTRTAB0x00xe2ec0x5d0x00x0001

          Program Segments

          TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
          LOAD0x00x80000x80000xd6ac0xd6ac6.17590x5R E0x8000.init .text .fini .rodata
          LOAD0xe0040x1e0040x1e0000x2d80xa9cc3.62500x6RW 0x8000.init_array .fini_array .got .data .bss
          GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

          Network Behavior

          Download Network PCAP: filtered – full

          TimestampSource PortDest PortSource IPDest IP
          Mar 26, 2025 10:22:48.188393116 CET5479353192.168.2.131.1.1.1
          Mar 26, 2025 10:22:48.188453913 CET6081153192.168.2.131.1.1.1
          Mar 26, 2025 10:22:48.313045979 CET53547931.1.1.1192.168.2.13
          Mar 26, 2025 10:22:48.329247952 CET53608111.1.1.1192.168.2.13

          DNS Queries

          TimestampSource IPDest IPTrans IDOP CodeNameTypeClassDNS over HTTPS
          Mar 26, 2025 10:22:48.188393116 CET192.168.2.131.1.1.10x5b43Standard query (0)daisy.ubuntu.comA (IP address)IN (0x0001)false
          Mar 26, 2025 10:22:48.188453913 CET192.168.2.131.1.1.10x6c3bStandard query (0)daisy.ubuntu.com28IN (0x0001)false

          DNS Answers

          TimestampSource IPDest IPTrans IDReply CodeNameCNameAddressTypeClassDNS over HTTPS
          Mar 26, 2025 10:22:48.313045979 CET1.1.1.1192.168.2.130x5b43No error (0)daisy.ubuntu.com162.213.35.24A (IP address)IN (0x0001)false
          Mar 26, 2025 10:22:48.313045979 CET1.1.1.1192.168.2.130x5b43No error (0)daisy.ubuntu.com162.213.35.25A (IP address)IN (0x0001)false

          System Behavior

          General

          Start time (UTC):09:22:46
          Start date (UTC):26/03/2025
          Path:/tmp/frosty.arm6.elf
          Arguments:/tmp/frosty.arm6.elf
          File size:4956856 bytes
          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1

          File Activities

          Process Activities

          System Activities