Linux Analysis Report
KlSEdcox0E

Overview

General Information

Sample Name: KlSEdcox0E
Analysis ID: 680652
MD5: 0e06af9c65c55a33b511790474a694a2
SHA1: 619c6a5363b87332dd94f70dd2cdc363b83169c5
SHA256: d18b6b21df1debcd89b26f432f5f95707991b651c64dbc8bfc9738d38ce9768c
Tags: 32armelfmirai
Infos:

Detection

Mirai
Score: 68
Range: 0 - 100
Whitelisted: false

Signatures

Malicious sample detected (through community Yara rule)
Yara detected Mirai
Multi AV Scanner detection for submitted file
Sample is packed with UPX
Sample contains only a LOAD segment without any section mappings
Yara signature match
Uses the "uname" system call to query kernel version information (possible evasion)
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
ELF contains segments with high entropy indicating compressed/encrypted content

Classification

AV Detection
barindex
Multi AV Scanner detection for submitted file
Source: KlSEdcox0E Virustotal: Detection: 37% Perma Link
Source: KlSEdcox0E ReversingLabs: Detection: 37%
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
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: 112.169.130.98
Source: unknown TCP traffic detected without corresponding DNS query: 112.169.130.98
Source: unknown TCP traffic detected without corresponding DNS query: 201.48.164.246
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: 217.21.43.86
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: 68.131.95.76
Source: KlSEdcox0E String found in binary or memory: http://upx.sf.net

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: 6221.1.00007fae54017000.00007fae5402b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 6221.1.00007fae54017000.00007fae5402b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Source: Process Memory Space: KlSEdcox0E PID: 6221, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: Process Memory Space: KlSEdcox0E PID: 6221, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_ea92cca8 Author: unknown
Sample contains only a LOAD segment without any section mappings
Source: LOAD without section mappings Program segment: 0x8000
Yara signature match
Source: KlSEdcox0E, 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: 6221.1.00007fae54017000.00007fae5402b000.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: 6221.1.00007fae54017000.00007fae5402b000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16
Source: Process Memory Space: KlSEdcox0E PID: 6221, 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: Process Memory Space: KlSEdcox0E PID: 6221, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_ea92cca8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = aa4aee9f3d6bedd8234eaf8778895a0f5d71c42b21f2a428f01f121e85704e8e, id = ea92cca8-bba7-4a1c-9b88-a2d051ad0021, last_modified = 2021-09-16
Source: classification engine Classification label: mal68.troj.evad.lin@0/0@0/0

Data Obfuscation
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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 3.94 Copyright (C) 1996-2017 the UPX Team. All Rights Reserved. $
ELF contains segments with high entropy indicating compressed/encrypted content
Source: KlSEdcox0E Submission file: segment LOAD with 7.956 entropy (max. 8.0)
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/KlSEdcox0E (PID: 6221) Queries kernel information via 'uname': Jump to behavior
Source: KlSEdcox0E, 6221.1.000055eb3ffa6000.000055eb40174000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: KlSEdcox0E, 6221.1.00007ffd19091000.00007ffd190b2000.rw-.sdmp Binary or memory string: %x86_64/usr/bin/qemu-arm/tmp/KlSEdcox0ESUDO_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/KlSEdcox0E
Source: KlSEdcox0E, 6221.1.000055eb3ffa6000.000055eb40174000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: KlSEdcox0E, 6221.1.00007ffd19091000.00007ffd190b2000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: KlSEdcox0E, 6221.1.00007ffd19091000.00007ffd190b2000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information
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Yara detected Mirai
Source: Yara match File source: 6221.1.00007fae54017000.00007fae5402b000.r-x.sdmp, type: MEMORY

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: 6221.1.00007fae54017000.00007fae5402b000.r-x.sdmp, type: MEMORY

No Screenshots

  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
112.169.130.98
 unknown Korea Republic of
4766 KIXS-AS-KRKoreaTelecomKR false
68.131.95.76
 unknown United States
701 UUNETUS false
201.48.164.246
 unknown Brazil
16735 ALGARTELECOMSABR false
109.202.202.202
 unknown Switzerland
13030 INIT7CH false
91.189.91.43
 unknown United Kingdom
41231 CANONICAL-ASGB false
91.189.91.42
 unknown United Kingdom
41231 CANONICAL-ASGB false
217.21.43.86
 unknown Belarus
13171 BSUBY false