Linux Analysis Report
na.elf

ID:	1531473
Product:	CloudBasic
Start time:	10:39:06
Start date:	11.10.2024
Sample:	na.elf
Cookbook:	defaultlinuxfilecookbook.jbs
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)
Architecture:	LINUX
MD5:	3feed654fb4b833d953d8bc87da72369
SHA1:	377ecd183fe2da294631b12d38417e4aadaed609
SHA256:	4afdfffb005da31d30874071bd95a7974dd388bd8552bd8e6890b38664189340
Filetype:	ELF Executable and Linkable format (generic) (4004/1) 100.00%

Name	Type	MD5	SHA1	SHA256

AV Detection

Source: na.elf	Virustotal: Detection: 21%			Perma Link
Source: na.elf	ReversingLabs: Detection: 56%

Networking

Source: global traffic	TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global traffic	TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic	TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80

Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43
Source: unknown	TCP traffic detected without corresponding DNS query: 109.202.202.202
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.43

Source: unknown	Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown	Network traffic detected: HTTP traffic on port 42836 -> 443

System Summary

Source: LOAD without section mappings

Program segment: 0x10000

Source: classification engine

Classification label: mal48.linELF@0/0@0/0

Persistence and Installation Behavior

Source: /usr/bin/dash (PID: 6233)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.b4IsJmMT26 /tmp/tmp.oYMsvJQLLd /tmp/tmp.IUZdjxDpIw			Jump to behavior
Source: /usr/bin/dash (PID: 6234)	Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.b4IsJmMT26 /tmp/tmp.oYMsvJQLLd /tmp/tmp.IUZdjxDpIw			Jump to behavior

Hooking and other Techniques for Hiding and Protection

Source: na.elf

Submission file: segment LOAD with 7.9962 entropy (max. 8.0)

Malware Analysis System Evasion

Source: /tmp/na.elf (PID: 6245)

Queries kernel information via 'uname':

Jump to behavior

Source: na.elf, 6245.1.00007ffc86b78000.00007ffc86b99000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/na.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/na.elf
Source: na.elf, 6245.1.0000564feb16d000.0000564feb29b000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: na.elf, 6245.1.0000564feb16d000.0000564feb29b000.rw-.sdmp	Binary or memory string: OV!/etc/qemu-binfmt/arm
Source: na.elf, 6245.1.00007ffc86b78000.00007ffc86b99000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: na.elf, 6245.1.00007ffc86b78000.00007ffc86b99000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped