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Linux Analysis Report
covid.arm.elf

Overview

General Information

Sample name:covid.arm.elf
Analysis ID:1584858
MD5:6883bc3d8bd940222d2dfd9426ca9f7c
SHA1:91ac3bd690a2e8df76e9ec78adfb2be1c1607a89
SHA256:fcde946cdd49c5fcb1f0002eb7651c76d603a4e38ee5e57ba84de7c9e26bd623
Tags:elfuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100
Whitelisted:false

Signatures

Multi AV Scanner detection for submitted file
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

Joe Sandbox version:41.0.0 Charoite
Analysis ID:1584858
Start date and time:2025-01-06 16:36:01 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 4m 47s
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:covid.arm.elf
Detection:MAL
Classification:mal48.linELF@0/0@0/0
Command:/tmp/covid.arm.elf
PID:6256
Exit Code:139
Exit Code Info:SIGSEGV (11) Segmentation fault invalid memory reference
Killed:False
Standard Output:

Standard Error:
  • system is lnxubuntu20
  • covid.arm.elf (PID: 6256, Parent: 6180, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/covid.arm.elf
  • cleanup
No yara matches
No Suricata rule has matched

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Source: covid.arm.elfReversingLabs: Detection: 44%
Source: global trafficTCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global trafficTCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
Source: global trafficTCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknownTCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknownTCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknownTCP traffic detected without corresponding DNS query: 91.189.91.43
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: /tmp/covid.arm.elf (PID: 6256)Queries kernel information via 'uname': Jump to behavior
Source: covid.arm.elf, 6256.1.000055d5b4fcb000.000055d5b50d7000.rw-.sdmpBinary or memory string: U!/etc/qemu-binfmt/arm
Source: covid.arm.elf, 6256.1.000055d5b4fcb000.000055d5b50d7000.rw-.sdmpBinary or memory string: Urg.qemu.gdb.arm.sys.regs">
Source: covid.arm.elf, 6256.1.00007fffbc6bc000.00007fffbc6dd000.rw-.sdmpBinary or memory string: *x86_64/usr/bin/qemu-arm/tmp/covid.arm.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/covid.arm.elf
Source: covid.arm.elf, 6256.1.000055d5b4fcb000.000055d5b50d7000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: covid.arm.elf, 6256.1.00007fffbc6bc000.00007fffbc6dd000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: covid.arm.elf, 6256.1.000055d5b4fcb000.000055d5b50d7000.rw-.sdmpBinary or memory string: rg.qemu.gdb.arm.sys.regs">
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
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
SourceDetectionScannerLabelLink
covid.arm.elf45%ReversingLabsLinux.Trojan.Mirai
No Antivirus matches
No Antivirus matches
No Antivirus matches
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
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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, stripped
                                          Entropy (8bit):5.037788987803164
                                          TrID:
                                          • ELF Executable and Linkable format (generic) (4004/1) 100.00%
                                          File name:covid.arm.elf
                                          File size:1'168 bytes
                                          MD5:6883bc3d8bd940222d2dfd9426ca9f7c
                                          SHA1:91ac3bd690a2e8df76e9ec78adfb2be1c1607a89
                                          SHA256:fcde946cdd49c5fcb1f0002eb7651c76d603a4e38ee5e57ba84de7c9e26bd623
                                          SHA512:18901939debff650ce78d96eacb97f2995d615891606d24e58297a44cb3f9479d93ae04536e7c6076c03ee5bc1297c6be05301418d771df39d2e69379b7a8cfc
                                          SSDEEP:24:JKR4llMRgP9qD0at6EoWGfrUlFSs0VzLCkIdhUgHgQIU1RmNfW:JKqTFqDPtirkFSsCzLwIUuNu
                                          TLSH:7121C9A697E65E26CD941677DCEF5B00E321BA44819EB403E32202190C3F21A0F2215A
                                          File Content Preview:.ELF...a..........(.........4...........4. ...(..................................................................................0...$.......,... ...<.......4.. ..."....<.......................................................0... ............-...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:ARM - ABI
                                          ABI Version:0
                                          Entry Point Address:0x831c
                                          Flags:0x202
                                          ELF Header Size:52
                                          Program Header Offset:52
                                          Program Header Size:32
                                          Number of Program Headers:2
                                          Section Header Offset:968
                                          Section Header Size:40
                                          Number of Section Headers:5
                                          Header String Table Index:4
                                          NameTypeAddressOffsetSizeEntSizeFlagsFlags DescriptionLinkInfoAlign
                                          NULL0x00x00x00x00x0000
                                          .textPROGBITS0x80740x740x2e80x00x6AX004
                                          .rodataPROGBITS0x835c0x35c0x4c0x10x32AMS004
                                          .bssNOBITS0x103a80x3a80x80x00x3WA004
                                          .shstrtabSTRTAB0x00x3a80x1e0x00x0001
                                          TypeOffsetVirtual AddressPhysical AddressFile SizeMemory SizeEntropyFlagsFlags DescriptionAlignProg InterpreterSection Mappings
                                          LOAD0x00x80000x80000x3a80x3a85.44610x5R E0x8000.text .rodata
                                          LOAD0x3a80x103a80x103a80x00x80.00000x6RW 0x8000.bss
                                          TimestampSource PortDest PortSource IPDest IP
                                          Jan 6, 2025 16:37:02.519740105 CET43928443192.168.2.2391.189.91.42
                                          Jan 6, 2025 16:37:03.031594038 CET4251680192.168.2.23109.202.202.202
                                          Jan 6, 2025 16:37:08.150959969 CET42836443192.168.2.2391.189.91.43
                                          Jan 6, 2025 16:37:22.740869999 CET43928443192.168.2.2391.189.91.42
                                          Jan 6, 2025 16:37:32.979408026 CET4251680192.168.2.23109.202.202.202
                                          Jan 6, 2025 16:37:35.027146101 CET42836443192.168.2.2391.189.91.43
                                          Jan 6, 2025 16:38:03.695157051 CET43928443192.168.2.2391.189.91.42

                                          System Behavior

                                          Start time (UTC):15:37:00
                                          Start date (UTC):06/01/2025
                                          Path:/tmp/covid.arm.elf
                                          Arguments:/tmp/covid.arm.elf
                                          File size:4956856 bytes
                                          MD5 hash:5ebfcae4fe2471fcc5695c2394773ff1