Linux Analysis Report bin.sh

ID:	551039
Product:	CloudBasic
Start time:	18:58:52
Start date:	11.01.2022
Sample:	bin.sh
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:	a73ddd6ec22462db955439f665cad4e6
SHA1:	ac6962542a4b23ac13bddff22f8df9aeb702ef12
SHA256:	b5cf68c7cb5bb2d21d60bf6654926f61566d95bfd7c9f9e182d032f1da5b4605
Filetype:	ELF Executable and Linkable format (Linux) (4029/14) 50.16%

Name	Type	MD5	SHA1	SHA256

AV Detection:

Antivirus / Scanner detection for submitted sample

Source: bin.sh

Avira: detected

Multi AV Scanner detection for submitted file

Source: bin.sh	Metadefender: Detection: 18%			Perma Link
Source: bin.sh	ReversingLabs: Detection: 78%

Networking:

Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)

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

Uses HTTPS

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

Connects to IPs without corresponding DNS lookups

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

URLs found in memory or binary data

Source: bin.sh

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

System Summary:

Sample contains only a LOAD segment without any section mappings

Source: LOAD without section mappings

Program segment: 0x400000

Yara signature match

Source: bin.sh, 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, reference = Internal Research, score = 038ff8b2fef16f8ee9d70e6c219c5f380afe1a21761791e8cbda21fa4d09fdb4
Source: 5223.1.00000000b8716a1c.00000000a1a19d0b.r-x.sdmp, type: MEMORY	Matched rule: SUSP_ELF_LNX_UPX_Compressed_File date = 2018-12-12, author = Florian Roth, description = Detects a suspicious ELF binary with UPX compression, reference = Internal Research, score = 038ff8b2fef16f8ee9d70e6c219c5f380afe1a21761791e8cbda21fa4d09fdb4

Classification label

Source: classification engine

Classification label: mal60.evad.linSH@0/0@0/0

Data Obfuscation:

Sample is packed with UPX

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 3.95 Copyright (C) 1996-2018 the UPX Team. All Rights Reserved. $

Malware Analysis System Evasion:

Uses the "uname" system call to query kernel version information (possible evasion)

Source: /tmp/bin.sh (PID: 5223)

Queries kernel information via 'uname':

Jump to behavior

May try to detect the virtual machine to hinder analysis (VM artifact strings found in memory)

Source: bin.sh, 5223.1.00000000d4a45a57.00000000c8ab71bb.rw-.sdmp	Binary or memory string: 6Mx86_64/usr/bin/qemu-mips/tmp/bin.shSUDO_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/bin.sh
Source: bin.sh, 5223.1.000000008a8f7ef3.000000000141f8af.rw-.sdmp	Binary or memory string: U!/etc/qemu-binfmt/mips
Source: bin.sh, 5223.1.000000008a8f7ef3.000000000141f8af.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mips
Source: bin.sh, 5223.1.00000000d4a45a57.00000000c8ab71bb.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mips
Source: bin.sh, 5223.1.00000000d4a45a57.00000000c8ab71bb.rw-.sdmp	Binary or memory string: qemu: uncaught target signal 5 (Trace/breakpoint trap) - core dumped