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Linux Analysis Report
sync.arm6.elf

Overview

General Information

Sample name:sync.arm6.elf
Analysis ID:1641099
MD5:264325e573dfe829c8ca4f0e76b9610d
SHA1:08aeb83a777ea4bc11a3629d31ddd8ed6cca071c
SHA256:2e512260d7dac846590b91b1e0656be9681a05dc68b1dab0ddb2c7b07925ecfe
Tags:elfMiraiuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100

Signatures

Multi AV Scanner detection for submitted file
Executes the "rm" command used to delete files or directories
Sample has stripped symbol table
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:1641099
Start date and time:2025-03-18 02:57:52 +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:sync.arm6.elf
Detection:MAL
Classification:mal48.linELF@0/0@0/0
Command:/tmp/sync.arm6.elf
PID:6208
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
  • dash New Fork (PID: 6196, Parent: 4332)
  • rm (PID: 6196, Parent: 4332, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.VGBOZc10rf /tmp/tmp.EPy4Ox0JPF /tmp/tmp.lwXJX0r4c9
  • dash New Fork (PID: 6197, Parent: 4332)
  • rm (PID: 6197, Parent: 4332, MD5: aa2b5496fdbfd88e38791ab81f90b95b) Arguments: rm -f /tmp/tmp.VGBOZc10rf /tmp/tmp.EPy4Ox0JPF /tmp/tmp.lwXJX0r4c9
  • sync.arm6.elf (PID: 6208, Parent: 6123, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/sync.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: sync.arm6.elfVirustotal: Detection: 46%Perma Link
Source: sync.arm6.elfReversingLabs: Detection: 44%
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: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 42836 -> 443
Source: ELF static info symbol of initial sample.symtab present: no
Source: classification engineClassification label: mal48.linELF@0/0@0/0
Source: /usr/bin/dash (PID: 6196)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.VGBOZc10rf /tmp/tmp.EPy4Ox0JPF /tmp/tmp.lwXJX0r4c9Jump to behavior
Source: /usr/bin/dash (PID: 6197)Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.VGBOZc10rf /tmp/tmp.EPy4Ox0JPF /tmp/tmp.lwXJX0r4c9Jump to behavior
Source: /tmp/sync.arm6.elf (PID: 6208)Queries kernel information via 'uname': Jump to behavior
Source: sync.arm6.elf, 6208.1.000055d85e9e0000.000055d85eb0e000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: sync.arm6.elf, 6208.1.00007ffd862ea000.00007ffd8630b000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/sync.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/sync.arm6.elf
Source: sync.arm6.elf, 6208.1.000055d85e9e0000.000055d85eb0e000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: sync.arm6.elf, 6208.1.00007ffd862ea000.00007ffd8630b000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: sync.arm6.elf, 6208.1.00007ffd862ea000.00007ffd8630b000.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 Interception1
File Deletion
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: 1641099 Sample: sync.arm6.elf Startdate: 18/03/2025 Architecture: LINUX Score: 48 10 109.202.202.202, 80 INIT7CH Switzerland 2->10 12 91.189.91.42, 443 CANONICAL-ASGB United Kingdom 2->12 14 91.189.91.43, 443 CANONICAL-ASGB United Kingdom 2->14 16 Multi AV Scanner detection for submitted file 2->16 6 dash rm sync.arm6.elf 2->6         started        8 dash rm 2->8         started        signatures3 process4
SourceDetectionScannerLabelLink
sync.arm6.elf47%VirustotalBrowse
sync.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
109.202.202.202
unknownSwitzerland
13030INIT7CHfalse
91.189.91.43
unknownUnited Kingdom
41231CANONICAL-ASGBfalse
91.189.91.42
unknownUnited Kingdom
41231CANONICAL-ASGBfalse
MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
109.202.202.202kpLwzBouH4.elfGet hashmaliciousUnknownBrowse
  • ch.archive.ubuntu.com/ubuntu/pool/main/f/firefox/firefox_92.0%2bbuild3-0ubuntu0.20.04.1_amd64.deb
91.189.91.43sync.mips.elfGet hashmaliciousUnknownBrowse
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                      91.189.91.42sync.mips.elfGet hashmaliciousUnknownBrowse
                        gigab.mips.elfGet hashmaliciousUnknownBrowse
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                                    na.elfGet hashmaliciousPrometeiBrowse
                                      na.elfGet hashmaliciousPrometeiBrowse
                                        na.elfGet hashmaliciousPrometeiBrowse
                                          No context
                                          MatchAssociated Sample Name / URLSHA 256DetectionThreat NameLinkContext
                                          CANONICAL-ASGBna.elfGet hashmaliciousPrometeiBrowse
                                          • 185.125.190.26
                                          sync.mips.elfGet hashmaliciousUnknownBrowse
                                          • 91.189.91.42
                                          gigab.mips.elfGet hashmaliciousUnknownBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          CANONICAL-ASGBna.elfGet hashmaliciousPrometeiBrowse
                                          • 185.125.190.26
                                          sync.mips.elfGet hashmaliciousUnknownBrowse
                                          • 91.189.91.42
                                          gigab.mips.elfGet hashmaliciousUnknownBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 91.189.91.42
                                          INIT7CHsync.mips.elfGet hashmaliciousUnknownBrowse
                                          • 109.202.202.202
                                          gigab.mips.elfGet hashmaliciousUnknownBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          na.elfGet hashmaliciousPrometeiBrowse
                                          • 109.202.202.202
                                          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):6.065925993116229
                                          TrID:
                                          • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                          File name:sync.arm6.elf
                                          File size:75'124 bytes
                                          MD5:264325e573dfe829c8ca4f0e76b9610d
                                          SHA1:08aeb83a777ea4bc11a3629d31ddd8ed6cca071c
                                          SHA256:2e512260d7dac846590b91b1e0656be9681a05dc68b1dab0ddb2c7b07925ecfe
                                          SHA512:a432da44eed4938b35f83e871dc09cd80415ae94e244825f5db120a081e32639a91ed6e4477335abd4fef68229848deefc25275bf1288a4fc7d2e38c97685b29
                                          SSDEEP:1536:/gnN8KKTKIDKhKIKLKE2ww6Jo+TOLKa+f5FjI1iq4lAHFUxYl5AY6J:BKKTKIDKhKIKLKEDJoIDah4lAHFUxYl4
                                          TLSH:CC731846F8C15B11D4C5167AFE0E218E331317BDE3DE72239E245B207B9B56B0E7A912
                                          File Content Preview:.ELF..............(.....T...4....#......4. ...(.......................................... ... ... ..h...8)..........Q.td..................................-...L..................@-.,@...0....S..... 0....S.........../..0...0...@..../.h#....... ....-.@0....S

                                          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:74684
                                          Section Header Size:40
                                          Number of Section Headers:11
                                          Header String Table Index:10
                                          NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                                          NULL0x00x00x00x00x0000
                                          .initPROGBITS0x80940x940x100x00x6AX004
                                          .textPROGBITS0x80b00xb00x1001c0x00x6AX0016
                                          .finiPROGBITS0x180cc0x100cc0x100x00x6AX004
                                          .rodataPROGBITS0x180e00x100e00x1b200x00x2A008
                                          .init_arrayINIT_ARRAY0x220040x120080x40x00x3WA004
                                          .fini_arrayFINI_ARRAY0x220080x1200c0x40x00x3WA004
                                          .gotPROGBITS0x220100x120140x740x40x3WA004
                                          .dataPROGBITS0x220840x120880x2e40x00x3WA004
                                          .bssNOBITS0x223680x1236c0xa5d40x00x3WA004
                                          .shstrtabSTRTAB0x00x1236c0x4d0x00x0001
                                          TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                                          LOAD0x00x80000x80000x11c000x11c006.13110x5R E0x8000.init .text .fini .rodata
                                          LOAD0x120040x220040x220000x3680x129384.47460x6RW 0x8000.init_array .fini_array .got .data .bss
                                          GNU_STACK0x00x00x00x00x00.00000x7RWE0x4

                                          Download Network PCAP: filteredfull

                                          • Total Packets: 7
                                          • 443 (HTTPS)
                                          • 80 (HTTP)
                                          TimestampSource PortDest PortSource IPDest IP
                                          Mar 18, 2025 02:58:33.803291082 CET43928443192.168.2.2391.189.91.42
                                          Mar 18, 2025 02:58:39.178524017 CET42836443192.168.2.2391.189.91.43
                                          Mar 18, 2025 02:58:40.714262962 CET4251680192.168.2.23109.202.202.202
                                          Mar 18, 2025 02:58:55.560197115 CET43928443192.168.2.2391.189.91.42
                                          Mar 18, 2025 02:59:05.798810005 CET42836443192.168.2.2391.189.91.43
                                          Mar 18, 2025 02:59:11.941994905 CET4251680192.168.2.23109.202.202.202
                                          Mar 18, 2025 02:59:36.514530897 CET43928443192.168.2.2391.189.91.42

                                          System Behavior

                                          Start time (UTC):01:58:26
                                          Start date (UTC):18/03/2025
                                          Path:/usr/bin/dash
                                          Arguments:-
                                          File size:129816 bytes
                                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                          Start time (UTC):01:58:26
                                          Start date (UTC):18/03/2025
                                          Path:/usr/bin/rm
                                          Arguments:rm -f /tmp/tmp.VGBOZc10rf /tmp/tmp.EPy4Ox0JPF /tmp/tmp.lwXJX0r4c9
                                          File size:72056 bytes
                                          MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                          Start time (UTC):01:58:27
                                          Start date (UTC):18/03/2025
                                          Path:/usr/bin/dash
                                          Arguments:-
                                          File size:129816 bytes
                                          MD5 hash:1e6b1c887c59a315edb7eb9a315fc84c

                                          Start time (UTC):01:58:27
                                          Start date (UTC):18/03/2025
                                          Path:/usr/bin/rm
                                          Arguments:rm -f /tmp/tmp.VGBOZc10rf /tmp/tmp.EPy4Ox0JPF /tmp/tmp.lwXJX0r4c9
                                          File size:72056 bytes
                                          MD5 hash:aa2b5496fdbfd88e38791ab81f90b95b

                                          Start time (UTC):01:58:33
                                          Start date (UTC):18/03/2025
                                          Path:/tmp/sync.arm6.elf
                                          Arguments:/tmp/sync.arm6.elf
                                          File size:4956856 bytes
                                          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1