Joe Sandbox Cloud Basic Analysis Report

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Linux Analysis Report
sshd.elf

Overview

General Information

Sample name:sshd.elf
Analysis ID:1565524
MD5:b485b17e86ac65004dad2eea947c43a7
SHA1:5f5a65f7916c8610b6a0e087babeb093a0a21c01
SHA256:25276149acd4378f9a2214f43a2075b1dd3ecd6904894097c03f7a80cfb1acae
Tags:elfuser-abuse_ch
Infos:

Detection

Score:48
Range:0 - 100
Whitelisted:false

Signatures

Multi AV Scanner detection for submitted file
Contains symbols related to standard C library sleeps (sometimes used to evade sandboxing)
Sample contains strings that are potentially command strings
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

General Information

Joe Sandbox version:41.0.0 Charoite
Analysis ID:1565524
Start date and time:2024-11-30 04:57:06 +01:00
Joe Sandbox product:CloudBasic
Overall analysis duration:0h 10m 28s
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:sshd.elf
Detection:MAL
Classification:mal48.linELF@0/0@0/0
Cookbook Comments:
  • Analysis time extended to 480s due to sleep detection in submitted sample

Runtime Messages

Command:/tmp/sshd.elf
PID:6236
Exit Code:255
Exit Code Info:
Killed:False
Standard Output:

Standard Error:/lib/ld-linux-armhf.so.3: No such file or directory

Process Tree

  • system is lnxubuntu20
  • sshd.elf (PID: 6236, Parent: 6158, MD5: 5ebfcae4fe2471fcc5695c2394773ff1) Arguments: /tmp/sshd.elf
  • cleanup

Yara Signatures

⊘No yara matches

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

barindex
Multi AV Scanner detection for submitted file
Source: sshd.elfReversingLabs: Detection: 26%
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: sshd.elfELF static info symbol of initial sample: freeaddrinfo
Source: sshd.elfELF static info symbol of initial sample: gai_strerror
Source: sshd.elfELF static info symbol of initial sample: getaddrinfo
Source: sshd.elfELF static info symbol of initial sample: getnameinfo
Source: sshd.elfString found in binary or memory: http://www.openssl.org/support/faq.html
Source: sshd.elfString found in binary or memory: http://www.openssl.org/support/faq.htmlmd_rand.c
Source: unknownNetwork traffic detected: HTTP traffic on port 43928 -> 443
Source: unknownNetwork traffic detected: HTTP traffic on port 42836 -> 443
Source: Initial samplePotential command found: ssh server is locked, please try again %dmin after !!!
Source: Initial samplePotential command found: X11 forwarding
Source: Initial samplePotential command found: X11 forwarding disabled in user configuration file.
Source: Initial samplePotential command found: X11 forwarding disabled in server configuration file.
Source: Initial samplePotential command found: X11 display already set.
Source: Initial samplePotential command found: X11 connection requested.
Source: Initial samplePotential command found: X11 connection from %.200s port %d
Source: Initial samplePotential command found: X11 connection rejected because of wrong authentication.
Source: Initial samplePotential command found: X11 rejected %d i%d/o%d
Source: Initial samplePotential command found: X11 closed %d i%d/o%d
Source: Initial samplePotential command found: X11 inet listener
Source: Initial samplePotential command found: X11 connection uses different authentication protocol.
Source: Initial samplePotential command found: X11 auth data does not match fake data.
Source: Initial samplePotential command found: X11 fake_data_len %d != saved_data_len %d
Source: ELF static info symbol of initial sample.symtab present: no
Source: classification engineClassification label: mal48.linELF@0/0@0/0
Source: ELF symbol in initial sampleSymbol name: usleep
Source: /tmp/sshd.elf (PID: 6236)Queries kernel information via 'uname': Jump to behavior
Source: sshd.elf, 6236.1.0000555ce4ed8000.0000555ce5006000.rw-.sdmpBinary or memory string: \U!/etc/qemu-binfmt/arm
Source: sshd.elf, 6236.1.00007ffec2ecf000.00007ffec2ef0000.rw-.sdmpBinary or memory string: x86_64/usr/bin/qemu-arm/tmp/sshd.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/sshd.elf
Source: sshd.elf, 6236.1.00007ffec2ecf000.00007ffec2ef0000.rw-.sdmpBinary or memory string: qemu: %s: %s
Source: sshd.elf, 6236.1.00007ffec2ecf000.00007ffec2ef0000.rw-.sdmpBinary or memory string: leqemu: %s: %s
Source: sshd.elf, 6236.1.0000555ce4ed8000.0000555ce5006000.rw-.sdmpBinary or memory string: /etc/qemu-binfmt/arm
Source: sshd.elf, 6236.1.00007ffec2ecf000.00007ffec2ef0000.rw-.sdmpBinary or memory string: /usr/bin/qemu-arm
Source: sshd.elf, 6236.1.0000555ce4ed8000.0000555ce5006000.rw-.sdmpBinary or memory string: rg.qemu.gdb.arm.sys.regs">
Source: sshd.elf, 6236.1.0000555ce4ed8000.0000555ce5006000.rw-.sdmpBinary or memory string: \Urg.qemu.gdb.arm.sys.regs">

Mitre Att&ck Matrix

ReconnaissanceResource DevelopmentInitial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionCommand and ControlExfiltrationImpact
Gather Victim Identity InformationAcquire InfrastructureValid Accounts1
Command and Scripting Interpreter		Path InterceptionPath Interception1
Virtualization/Sandbox Evasion		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 Memory1
Virtualization/Sandbox Evasion		Remote 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

Screenshots

Thumbnails

This section contains all screenshots as thumbnails, including those not shown in the slideshow.