Linux Analysis Report
bin.sh.elf

Overview

General Information

Sample name: bin.sh.elf
Analysis ID: 1561512
MD5: ac8dc686374f36fd1e0d1b680b201af5
SHA1: 23e3dba72ecd2f468d1b80914d3968cebf79f5cd
SHA256: d1bf56cfc7191084fe938da61077120f6c3abf27231f36befaf50f9c24a4d511
Tags: elfuser-abuse_ch
Infos:

Detection

Score: 64
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus / Scanner detection for submitted sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
ELF contains segments with high entropy indicating compressed/encrypted content
Sample contains only a LOAD segment without any section mappings
Uses the "uname" system call to query kernel version information (possible evasion)
Yara signature match

Classification

AV Detection
barindex
Antivirus / Scanner detection for submitted sample
Source: bin.sh.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: bin.sh.elf ReversingLabs: Detection: 52%
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: bin.sh.elf, type: SAMPLE Matched rule: Linux_Packer_Patched_UPX_62e11c64 Author: unknown
Source: 5488.1.00007f4864400000.00007f4864422000.r-x.sdmp, type: MEMORY Matched rule: Linux_Packer_Patched_UPX_62e11c64 Author: unknown
Sample contains only a LOAD segment without any section mappings
Source: LOAD without section mappings Program segment: 0x400000
Yara signature match
Source: bin.sh.elf, type: SAMPLE Matched rule: Linux_Packer_Patched_UPX_62e11c64 reference_sample = 02f81a1e1edcb9032a1d7256a002b11e1e864b2e9989f5d24ea1c9b507895669, os = linux, severity = x86, creation_date = 2021-06-08, scan_context = file, reference = https://cujo.com/upx-anti-unpacking-techniques-in-iot-malware/, license = Elastic License v2, threat_name = Linux.Packer.Patched_UPX, fingerprint = 3297b5c63e70c557e71b739428b453039b142e1e04c2ab15eea4627d023b686d, id = 62e11c64-fc7d-4a0a-9d72-ad53ec3987ff, last_modified = 2021-07-28
Source: 5488.1.00007f4864400000.00007f4864422000.r-x.sdmp, type: MEMORY Matched rule: Linux_Packer_Patched_UPX_62e11c64 reference_sample = 02f81a1e1edcb9032a1d7256a002b11e1e864b2e9989f5d24ea1c9b507895669, os = linux, severity = x86, creation_date = 2021-06-08, scan_context = file, reference = https://cujo.com/upx-anti-unpacking-techniques-in-iot-malware/, license = Elastic License v2, threat_name = Linux.Packer.Patched_UPX, fingerprint = 3297b5c63e70c557e71b739428b453039b142e1e04c2ab15eea4627d023b686d, id = 62e11c64-fc7d-4a0a-9d72-ad53ec3987ff, last_modified = 2021-07-28
Source: classification engine Classification label: mal64.linELF@0/0@2/0
ELF contains segments with high entropy indicating compressed/encrypted content
Source: bin.sh.elf Submission file: segment LOAD with 7.8186 entropy (max. 8.0)
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/bin.sh.elf (PID: 5488) Queries kernel information via 'uname': Jump to behavior
Source: bin.sh.elf, 5488.1.00005563c58a7000.00005563c592e000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/mips
Source: bin.sh.elf, 5488.1.00005563c58a7000.00005563c592e000.rw-.sdmp Binary or memory string: cU!/etc/qemu-binfmt/mips
Source: bin.sh.elf, 5488.1.00007ffc7159b000.00007ffc715bc000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-mips/tmp/bin.sh.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/bin.sh.elf
Source: bin.sh.elf, 5488.1.00007ffc7159b000.00007ffc715bc000.rw-.sdmp Binary or memory string: /usr/bin/qemu-mips
Source: bin.sh.elf, 5488.1.00007ffc7159b000.00007ffc715bc000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped
windows-stand
⊘No contacted IP infos

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.25 true