Linux Analysis Report
RJ93lr3oq2.elf

Overview

General Information

Sample name: RJ93lr3oq2.elf
renamed because original name is a hash value
Original sample name: 9363e31f6a3cc4562b85a88d51cb4aa6.elf
Analysis ID: 1431963
MD5: 9363e31f6a3cc4562b85a88d51cb4aa6
SHA1: 4636d64fab27064aaf165844fb8cd9a0c9bcb917
SHA256: c401fb37ba661c8e0806530b55de040743048d23035be6694b841c9c69a427ab
Tags: 32elfintelmirai
Infos:

Detection

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

Signatures

Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Okiru
Machine Learning detection for sample
Reads CPU information from /proc indicative of miner or evasive malware
Reads system information from the proc file system
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample contains strings that are user agent strings indicative of HTTP manipulation
Sample has stripped symbol table
Sample tries to kill a process (SIGKILL)
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Yara signature match

Classification

AV Detection
barindex
Multi AV Scanner detection for submitted file
Source: RJ93lr3oq2.elf Virustotal: Detection: 23% Perma Link
Machine Learning detection for sample
Source: RJ93lr3oq2.elf Joe Sandbox ML: detected
Reads CPU information from /proc indicative of miner or evasive malware
Source: /tmp/RJ93lr3oq2.elf (PID: 5438) Reads CPU info from proc file: /proc/cpuinfo Jump to behavior
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Source: global traffic TCP traffic: 192.168.2.13:48202 -> 185.125.190.26:443
Source: unknown TCP traffic detected without corresponding DNS query: 185.125.190.26
Source: unknown TCP traffic detected without corresponding DNS query: 185.125.190.26
Source: global traffic DNS traffic detected: DNS query: daisy.ubuntu.com
Source: unknown Network traffic detected: HTTP traffic on port 48202 -> 443

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: RJ93lr3oq2.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_aa39fb02 Author: unknown
Source: RJ93lr3oq2.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_3a56423b Author: unknown
Source: RJ93lr3oq2.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_d18b3463 Author: unknown
Source: RJ93lr3oq2.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_dab39a25 Author: unknown
Source: 5435.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_aa39fb02 Author: unknown
Source: 5435.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_3a56423b Author: unknown
Source: 5435.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_d18b3463 Author: unknown
Source: 5435.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_dab39a25 Author: unknown
Source: 5437.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_aa39fb02 Author: unknown
Source: 5437.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_3a56423b Author: unknown
Source: 5437.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_d18b3463 Author: unknown
Source: 5437.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_dab39a25 Author: unknown
Source: 5438.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_aa39fb02 Author: unknown
Source: 5438.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_3a56423b Author: unknown
Source: 5438.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_d18b3463 Author: unknown
Source: 5438.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_dab39a25 Author: unknown
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Source: Initial sample String containing 'busybox' found: /bin/busybox
Source: Initial sample String containing 'busybox' found: /proc/proc/%s/exe/var/Challenge/app/hi3511/gmDVR/ibox/usr/dvr_main _8182T_1108/mnt/mtd/app/gui/var/Kylin/l0 c/udevd/var/tmp/sonia/hicore/stm_hi3511_dvr/bin/busybox/usr/lib/systemd/systemd/shell/mnt//sys//boot//media//srv//var/run//sbin//lib//etc//dev//home/Davinci/telnet/ssh/var/spool/var/Sofia/sshd/usr/compress/bin//compress/bin/compress/usr//bash/httpd/telnetd/dropbear/ropbear/encoder/system/root/dvr_gui//root/dvr_app//anko-app//opt//softbot.arm/softbot.arm6/softbot.dbg/softbot.mpsl/softbot.x86/softbot.arm5/softbot.arm7/softbot.mips/softbot.sh4/bin/sh/anko-app/ankosample _8182T_1104/usr/libexec/openssh/sftp-server3s
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Sample tries to kill a process (SIGKILL)
Source: /tmp/RJ93lr3oq2.elf (PID: 5436) SIGKILL sent: pid: 5438, result: successful Jump to behavior
Yara signature match
Source: RJ93lr3oq2.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_aa39fb02 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = b136ba6496816ba9737a3eb0e633c28a337511a97505f06e52f37b38599587cb, id = aa39fb02-ca7e-4809-ab5d-00e92763f7ec, last_modified = 2021-09-16
Source: RJ93lr3oq2.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_3a56423b os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 117d6eb47f000c9d475119ca0e6a1b49a91bbbece858758aaa3d7f30d0777d75, id = 3a56423b-c0cf-4483-87e3-552beb40563a, last_modified = 2021-09-16
Source: RJ93lr3oq2.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_d18b3463 reference_sample = cd86534d709877ec737ceb016b2a5889d2e3562ffa45a278bc615838c2e9ebc3, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 4b3d3bb65db2cdb768d91c50928081780f206208e952c74f191d8bc481ce19c6, id = d18b3463-1b5e-49e1-9ae8-1d63a10a1ccc, last_modified = 2021-09-16
Source: RJ93lr3oq2.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_dab39a25 reference_sample = 3e02fb63803110cabde08e809cf4acc1b8fb474ace531959a311858fdd578bab, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 5a628d9af9d6dccf29e78f780bb74a2fa25167954c34d4a1529bdea5ea891ac0, id = dab39a25-852b-441f-86ab-23d945daa62c, last_modified = 2022-01-26
Source: 5435.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_aa39fb02 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = b136ba6496816ba9737a3eb0e633c28a337511a97505f06e52f37b38599587cb, id = aa39fb02-ca7e-4809-ab5d-00e92763f7ec, last_modified = 2021-09-16
Source: 5435.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_3a56423b os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 117d6eb47f000c9d475119ca0e6a1b49a91bbbece858758aaa3d7f30d0777d75, id = 3a56423b-c0cf-4483-87e3-552beb40563a, last_modified = 2021-09-16
Source: 5435.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_d18b3463 reference_sample = cd86534d709877ec737ceb016b2a5889d2e3562ffa45a278bc615838c2e9ebc3, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 4b3d3bb65db2cdb768d91c50928081780f206208e952c74f191d8bc481ce19c6, id = d18b3463-1b5e-49e1-9ae8-1d63a10a1ccc, last_modified = 2021-09-16
Source: 5435.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_dab39a25 reference_sample = 3e02fb63803110cabde08e809cf4acc1b8fb474ace531959a311858fdd578bab, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 5a628d9af9d6dccf29e78f780bb74a2fa25167954c34d4a1529bdea5ea891ac0, id = dab39a25-852b-441f-86ab-23d945daa62c, last_modified = 2022-01-26
Source: 5437.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_aa39fb02 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = b136ba6496816ba9737a3eb0e633c28a337511a97505f06e52f37b38599587cb, id = aa39fb02-ca7e-4809-ab5d-00e92763f7ec, last_modified = 2021-09-16
Source: 5437.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_3a56423b os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 117d6eb47f000c9d475119ca0e6a1b49a91bbbece858758aaa3d7f30d0777d75, id = 3a56423b-c0cf-4483-87e3-552beb40563a, last_modified = 2021-09-16
Source: 5437.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_d18b3463 reference_sample = cd86534d709877ec737ceb016b2a5889d2e3562ffa45a278bc615838c2e9ebc3, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 4b3d3bb65db2cdb768d91c50928081780f206208e952c74f191d8bc481ce19c6, id = d18b3463-1b5e-49e1-9ae8-1d63a10a1ccc, last_modified = 2021-09-16
Source: 5437.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_dab39a25 reference_sample = 3e02fb63803110cabde08e809cf4acc1b8fb474ace531959a311858fdd578bab, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 5a628d9af9d6dccf29e78f780bb74a2fa25167954c34d4a1529bdea5ea891ac0, id = dab39a25-852b-441f-86ab-23d945daa62c, last_modified = 2022-01-26
Source: 5438.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_aa39fb02 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = b136ba6496816ba9737a3eb0e633c28a337511a97505f06e52f37b38599587cb, id = aa39fb02-ca7e-4809-ab5d-00e92763f7ec, last_modified = 2021-09-16
Source: 5438.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_3a56423b os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 117d6eb47f000c9d475119ca0e6a1b49a91bbbece858758aaa3d7f30d0777d75, id = 3a56423b-c0cf-4483-87e3-552beb40563a, last_modified = 2021-09-16
Source: 5438.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_d18b3463 reference_sample = cd86534d709877ec737ceb016b2a5889d2e3562ffa45a278bc615838c2e9ebc3, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 4b3d3bb65db2cdb768d91c50928081780f206208e952c74f191d8bc481ce19c6, id = d18b3463-1b5e-49e1-9ae8-1d63a10a1ccc, last_modified = 2021-09-16
Source: 5438.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_dab39a25 reference_sample = 3e02fb63803110cabde08e809cf4acc1b8fb474ace531959a311858fdd578bab, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 5a628d9af9d6dccf29e78f780bb74a2fa25167954c34d4a1529bdea5ea891ac0, id = dab39a25-852b-441f-86ab-23d945daa62c, last_modified = 2022-01-26
Source: classification engine Classification label: mal68.troj.linELF@0/0@2/0
Reads system information from the proc file system
Source: /tmp/RJ93lr3oq2.elf (PID: 5438) Reads from proc file: /proc/cpuinfo Jump to behavior
Reads CPU information from /proc indicative of miner or evasive malware
Source: /tmp/RJ93lr3oq2.elf (PID: 5438) Reads CPU info from proc file: /proc/cpuinfo Jump to behavior

Stealing of Sensitive Information
barindex
Yara detected Okiru
Source: Yara match File source: RJ93lr3oq2.elf, type: SAMPLE
Source: Yara match File source: 5435.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5437.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5438.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: RJ93lr3oq2.elf PID: 5435, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: RJ93lr3oq2.elf PID: 5437, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: RJ93lr3oq2.elf PID: 5438, type: MEMORYSTR
Sample contains strings that are user agent strings indicative of HTTP manipulation
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:100.0) Gecko/20100101 Firefox/100.0
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.64 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (X11; Linux x86_64; rv:100.0) Gecko/20100101 Firefox/100.0
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Firefox/91.0
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.63 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:101.0) Gecko/20100101 Firefox/101.0
Source: Initial sample User agent string found: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.67 Safari/537.36Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:100.0) Gecko/20100101 Firefox/100.0Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.64 Safari/537.36Mozilla/5.0 (X11; Linux x86_64; rv:100.0) Gecko/20100101 Firefox/100.0Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Firefox/91.0Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.63 Safari/537.36Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:101.0) Gecko/20100101 Firefox/101.0

Remote Access Functionality
barindex
Yara detected Okiru
Source: Yara match File source: RJ93lr3oq2.elf, type: SAMPLE
Source: Yara match File source: 5435.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5437.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 5438.1.0000000008048000.0000000008059000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: RJ93lr3oq2.elf PID: 5435, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: RJ93lr3oq2.elf PID: 5437, type: MEMORYSTR
Source: Yara match File source: Process Memory Space: RJ93lr3oq2.elf PID: 5438, type: MEMORYSTR

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
185.125.190.26
 unknown United Kingdom
41231 CANONICAL-ASGB false

Contacted Domains

Name IP Active
daisy.ubuntu.com 162.213.35.25 true