Linux Analysis Report
8LzAAQOA5F.elf

ID:	755691
Product:	CloudBasic
Start time:	02:16:05
Start date:	29.11.2022
Sample:	8LzAAQOA5F.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:	0654cfa752abc860f437ffd2d47829b0
SHA1:	e1b136b7457e5210de12822df56a8e4a276073b5
SHA256:	110f671bf87c7f2ff4baa1c4d7a560a98a53c3cf1449e099f00302a8a4cc5b31
Filetype:	ELF Executable and Linkable format (generic) (4004/1) 100.00%

Name	Type	MD5	SHA1	SHA256

AV Detection

Source: 8LzAAQOA5F.elf	ReversingLabs: Detection: 50%
Source: 8LzAAQOA5F.elf	Virustotal: Detection: 44%			Perma Link

Networking

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: global traffic	TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443

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

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: 119.139.3.57
Source: unknown	TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown	TCP traffic detected without corresponding DNS query: 125.41.80.140

Source: 8LzAAQOA5F.elf

String found in binary or memory: http://upx.sf.net

System Summary

Source: 6222.1.00007fee30017000.00007fee3002b000.r-x.sdmp, type: MEMORY

Matched rule: Detects ELF malware Mirai related Author: Florian Roth

Source: LOAD without section mappings

Program segment: 0x8000

Source: 8LzAAQOA5F.elf, type: SAMPLE	Matched rule: SUSP_ELF_LNX_UPX_Compressed_File date = 2018-12-12, author = Florian Roth, description = Detects a suspicious ELF binary with UPX compression, score = 038ff8b2fef16f8ee9d70e6c219c5f380afe1a21761791e8cbda21fa4d09fdb4, reference = Internal Research
Source: 6222.1.00007fee30017000.00007fee3002b000.r-x.sdmp, type: MEMORY	Matched rule: SUSP_XORed_Mozilla date = 2019-10-28, author = Florian Roth, description = Detects suspicious single byte XORed keyword \'Mozilla/5.0\' - it uses yara\'s XOR modifier and therefore cannot print the XOR key. You can use the CyberChef recipe linked in the reference field to brute force the used key., score = , reference = https://gchq.github.io/CyberChef/#recipe=XOR_Brute_Force(), modified = 2022-05-13
Source: 6222.1.00007fee30017000.00007fee3002b000.r-x.sdmp, type: MEMORY	Matched rule: MAL_ELF_LNX_Mirai_Oct10_2 date = 2018-10-27, hash1 = fa0018e75f503f9748a5de0d14d4358db234f65e28c31c8d5878cc58807081c9, author = Florian Roth, description = Detects ELF malware Mirai related, reference = Internal Research

Source: classification engine

Classification label: mal68.troj.evad.linELF@0/0@0/0

Data Obfuscation

Source: initial sample	String containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sample	String containing UPX found: $Info: This file is packed with the UPX executable packer http://upx.sf.net $
Source: initial sample	String containing UPX found: $Id: UPX 3.94 Copyright (C) 1996-2017 the UPX Team. All Rights Reserved. $

Hooking and other Techniques for Hiding and Protection

Source: 8LzAAQOA5F.elf

Submission file: segment LOAD with 7.9601 entropy (max. 8.0)

Malware Analysis System Evasion

Source: /tmp/8LzAAQOA5F.elf (PID: 6222)

Queries kernel information via 'uname':

Jump to behavior

Source: 8LzAAQOA5F.elf, 6222.1.000055cbcab0e000.000055cbcad3c000.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/arm
Source: 8LzAAQOA5F.elf, 6222.1.00007fff03edf000.00007fff03f00000.rw-.sdmp	Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/8LzAAQOA5F.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/8LzAAQOA5F.elf
Source: 8LzAAQOA5F.elf, 6222.1.000055cbcab0e000.000055cbcad3c000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/arm
Source: 8LzAAQOA5F.elf, 6222.1.00007fff03edf000.00007fff03f00000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-arm
Source: 8LzAAQOA5F.elf, 6222.1.00007fff03edf000.00007fff03f00000.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information

Source: Yara match

File source: 6222.1.00007fee30017000.00007fee3002b000.r-x.sdmp, type: MEMORY

Remote Access Functionality

Source: Yara match

File source: 6222.1.00007fee30017000.00007fee3002b000.r-x.sdmp, type: MEMORY