Linux Analysis Report
belks.arm5.elf

Overview

General Information

Sample name: belks.arm5.elf
Analysis ID: 1544886
MD5: fd83bb1c256c42f1b4dda3702dfae978
SHA1: 9d29b234f292b4114eb300366bcac79b431c0e34
SHA256: 0b8306c757da0b8157eac0aa9d255101aec908bef2d2a81c06b68d318b16acfa
Tags: belkselfuser-NDA0E
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
Sample has stripped symbol table
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: belks.arm5.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: belks.arm5.elf ReversingLabs: Detection: 68%
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: unknown UDP traffic detected without corresponding DNS query: 1.1.1.1
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: belks.arm5.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5523.1.00007f2e3802c000.00007f2e3802d000.rw-.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5523.1.00007f2e38017000.00007f2e38025000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: belks.arm5.elf PID: 5523, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Yara signature match
Source: belks.arm5.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: 5523.1.00007f2e3802c000.00007f2e3802d000.rw-.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: 5523.1.00007f2e38017000.00007f2e38025000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: Process Memory Space: belks.arm5.elf PID: 5523, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = a2c6beaec18ca876e8487c11bcc7a29279669588aacb7d3027d8d8df8f5bcead, id = 28a2fe0c-eed5-4c79-81e6-3b11b73a4ebd, last_modified = 2021-09-16
Source: classification engine Classification label: mal64.linELF@0/0@2/0
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/belks.arm5.elf (PID: 5523) Queries kernel information via 'uname': Jump to behavior
Source: belks.arm5.elf, 5523.1.0000558294a1d000.0000558294b4b000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: belks.arm5.elf, 5523.1.00007ffe7c745000.00007ffe7c766000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/belks.arm5.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/belks.arm5.elf
Source: belks.arm5.elf, 5523.1.00007ffe7c745000.00007ffe7c766000.rw-.sdmp Binary or memory string: qemu: %s: %s
Source: belks.arm5.elf, 5523.1.00007ffe7c745000.00007ffe7c766000.rw-.sdmp Binary or memory string: leqemu: %s: %s
Source: belks.arm5.elf, 5523.1.0000558294a1d000.0000558294b4b000.rw-.sdmp Binary or memory string: Urg.qemu.gdb.arm.sys.regs">
Source: belks.arm5.elf, 5523.1.0000558294a1d000.0000558294b4b000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: belks.arm5.elf, 5523.1.00007ffe7c745000.00007ffe7c766000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: belks.arm5.elf, 5523.1.0000558294a1d000.0000558294b4b000.rw-.sdmp Binary or memory string: rg.qemu.gdb.arm.sys.regs">
windows-stand
⊘No contacted IP infos

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.24 true