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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

Analysis Advice

All HTTP servers contacted by the sample do not answer. The sample is likely an old dropper which does no longer work.

General Information

Joe Sandbox version:	40.0.0 Tourmaline
Analysis ID:	1431963
Start date and time:	2024-04-26 04:56:08 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 52s
Hypervisor based Inspection enabled:	false
Report type:	full
Cookbook file name:	defaultlinuxfilecookbook.jbs
Analysis 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)
Analysis Mode:	default
Sample name:	RJ93lr3oq2.elf renamed because original name is a hash value
Original Sample Name:	9363e31f6a3cc4562b85a88d51cb4aa6.elf
Detection:	MAL
Classification:	mal68.troj.linELF@0/0@2/0

Runtime Messages

Command:	/tmp/RJ93lr3oq2.elf
PID:	5435
Exit Code:	0
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

RJ93lr3oq2.elf (PID: 5435, Parent: 5359, MD5: 9363e31f6a3cc4562b85a88d51cb4aa6) Arguments: /tmp/RJ93lr3oq2.elf

RJ93lr3oq2.elf New Fork (PID: 5436, Parent: 5435)

RJ93lr3oq2.elf New Fork (PID: 5437, Parent: 5435)

RJ93lr3oq2.elf New Fork (PID: 5438, Parent: 5437)

cleanup

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
RJ93lr3oq2.elf	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
RJ93lr3oq2.elf	Linux_Trojan_Mirai_aa39fb02	unknown	unknown	0x4800:$a: 74 DE 8D 40 F1 3C 01 76 D7 80 FA 38 74 D2 80 FA 0A 74 CD 80
RJ93lr3oq2.elf	Linux_Trojan_Mirai_3a56423b	unknown	unknown	0x83cf:$a: 24 1C 8B 44 24 20 0F B6 D0 C1 E8 08 89 54 24 24 89 44 24 20 BA 01 00
RJ93lr3oq2.elf	Linux_Trojan_Mirai_d18b3463	unknown	unknown	0x4848:$a: DF 77 95 8D 42 FA 3C 01 76 8E 80 FA 0B 74 89 80 FA 15 74 84 80
RJ93lr3oq2.elf	Linux_Trojan_Mirai_dab39a25	unknown	unknown	0x6b02:$a: 0E 75 20 50 6A 00 6A 00 6A 00 53 6A 0E FF 74 24 48 68 DD 00

Memory Dumps

Source	Rule	Description	Author	Strings
5435.1.0000000008048000.0000000008059000.r-x.sdmp	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
5435.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_aa39fb02	unknown	unknown	0x4800:$a: 74 DE 8D 40 F1 3C 01 76 D7 80 FA 38 74 D2 80 FA 0A 74 CD 80
5435.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_3a56423b	unknown	unknown	0x83cf:$a: 24 1C 8B 44 24 20 0F B6 D0 C1 E8 08 89 54 24 24 89 44 24 20 BA 01 00
5435.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_d18b3463	unknown	unknown	0x4848:$a: DF 77 95 8D 42 FA 3C 01 76 8E 80 FA 0B 74 89 80 FA 15 74 84 80
5435.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_dab39a25	unknown	unknown	0x6b02:$a: 0E 75 20 50 6A 00 6A 00 6A 00 53 6A 0E FF 74 24 48 68 DD 00
5437.1.0000000008048000.0000000008059000.r-x.sdmp	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
5437.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_aa39fb02	unknown	unknown	0x4800:$a: 74 DE 8D 40 F1 3C 01 76 D7 80 FA 38 74 D2 80 FA 0A 74 CD 80
5437.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_3a56423b	unknown	unknown	0x83cf:$a: 24 1C 8B 44 24 20 0F B6 D0 C1 E8 08 89 54 24 24 89 44 24 20 BA 01 00
5437.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_d18b3463	unknown	unknown	0x4848:$a: DF 77 95 8D 42 FA 3C 01 76 8E 80 FA 0B 74 89 80 FA 15 74 84 80
5437.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_dab39a25	unknown	unknown	0x6b02:$a: 0E 75 20 50 6A 00 6A 00 6A 00 53 6A 0E FF 74 24 48 68 DD 00
5438.1.0000000008048000.0000000008059000.r-x.sdmp	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
5438.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_aa39fb02	unknown	unknown	0x4800:$a: 74 DE 8D 40 F1 3C 01 76 D7 80 FA 38 74 D2 80 FA 0A 74 CD 80
5438.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_3a56423b	unknown	unknown	0x83cf:$a: 24 1C 8B 44 24 20 0F B6 D0 C1 E8 08 89 54 24 24 89 44 24 20 BA 01 00
5438.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_d18b3463	unknown	unknown	0x4848:$a: DF 77 95 8D 42 FA 3C 01 76 8E 80 FA 0B 74 89 80 FA 15 74 84 80
5438.1.0000000008048000.0000000008059000.r-x.sdmp	Linux_Trojan_Mirai_dab39a25	unknown	unknown	0x6b02:$a: 0E 75 20 50 6A 00 6A 00 6A 00 53 6A 0E FF 74 24 48 68 DD 00
Process Memory Space: RJ93lr3oq2.elf PID: 5435	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
Process Memory Space: RJ93lr3oq2.elf PID: 5437	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
Process Memory Space: RJ93lr3oq2.elf PID: 5438	JoeSecurity_Okiru	Yara detected Okiru	Joe Security
Click to see the 13 entries

Snort Signatures

⊘No Snort rule has matched

Joe Sandbox Signatures

Click to jump to signature section

Show All Signature Results

AV Detection

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

Source: /tmp/RJ93lr3oq2.elf (PID: 5438)

Reads CPU info from proc file: /proc/cpuinfo

Jump to 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

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

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

Source: ELF static info symbol of initial sample

.symtab present: no

Source: /tmp/RJ93lr3oq2.elf (PID: 5436)

SIGKILL sent: pid: 5438, result: successful

Jump to behavior

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

Source: /tmp/RJ93lr3oq2.elf (PID: 5438)

Reads from proc file: /proc/cpuinfo

Jump to behavior

Source: /tmp/RJ93lr3oq2.elf (PID: 5438)

Reads CPU info from proc file: /proc/cpuinfo

Jump to behavior

Stealing of Sensitive Information

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

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

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

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	Acquire Infrastructure	Valid Accounts	Windows Management Instrumentation	Path Interception	Path Interception	Direct Volume Access	OS Credential Dumping	2 System Information Discovery	Remote Services	Data from Local System	1 Data Obfuscation	Exfiltration Over Other Network Medium	Abuse Accessibility Features
Credentials	Domains	Default Accounts	Scheduled Task/Job	Boot or Logon Initialization Scripts	Boot or Logon Initialization Scripts	Rootkit	LSASS Memory	Application Window Discovery	Remote Desktop Protocol	Data from Removable Media	1 Encrypted Channel	Exfiltration Over Bluetooth	Network Denial of Service
Email Addresses	DNS Server	Domain Accounts	At	Logon Script (Windows)	Logon Script (Windows)	Obfuscated Files or Information	Security Account Manager	Query Registry	SMB/Windows Admin Shares	Data from Network Shared Drive	1 Non-Application Layer Protocol	Automated Exfiltration	Data Encrypted for Impact
Employee Names	Virtual Private Server	Local Accounts	Cron	Login Hook	Login Hook	Binary Padding	NTDS	System Network Configuration Discovery	Distributed Component Object Model	Input Capture	2 Application Layer Protocol	Traffic Duplication	Data Destruction

Malware Configuration

⊘No configs have been found

Behavior Graph

Hide Legend

Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Number of created Files
Is malicious
Internet

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
RJ93lr3oq2.elf	23%	Virustotal		Browse
RJ93lr3oq2.elf	100%	Joe Sandbox ML

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

Name	IP	Active	Malicious	Antivirus Detection	Reputation
daisy.ubuntu.com	162.213.35.25	true	false		high

World Map of Contacted IPs

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

Public IPs

IP	Domain	Country	Flag	ASN	ASN Name	Malicious
185.125.190.26	unknown	United Kingdom		41231	CANONICAL-ASGB	false

Joe Sandbox View / Context

IPs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link
185.125.190.26	aZxA9dZCxS.elf	Get hash	malicious	Mirai, Okiru	Browse
	cR7iTvKIZm.elf	Get hash	malicious	Mirai, Okiru	Browse
	aMTecZscrq.elf	Get hash	malicious	Unknown	Browse
	ldCdti5sRA.elf	Get hash	malicious	Mirai, Okiru	Browse
	vlxx.x86_64.elf	Get hash	malicious	Mirai, Okiru	Browse
	gCqnbN34QY.elf	Get hash	malicious	Unknown	Browse
	PylIt4izlJ.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.Trojan.Linux.GenericKD.24576.11147.21229.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.Trojan.Linux.GenericKD.24541.15958.30966.elf	Get hash	malicious	Unknown	Browse
	SecuriteInfo.com.Other.Malware-gen.31307.16494.elf	Get hash	malicious	Mirai	Browse

Domains

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
daisy.ubuntu.com	0tfJECfbEP.elf	Get hash	malicious	Mirai	Browse	162.213.35.24
	wve8oHXj1h.elf	Get hash	malicious	Mirai, Okiru	Browse	162.213.35.24
	o4883TEQGB.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.25
	Y4pblBbDQc.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.24
	WIen6fj9bO.elf	Get hash	malicious	Mirai, Okiru	Browse	162.213.35.24
	LmwJkVcLpC.elf	Get hash	malicious	Mirai, Okiru	Browse	162.213.35.24
	6fV4tfoJp2.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.24
	hz2ffABF7w.elf	Get hash	malicious	Mirai, Okiru	Browse	162.213.35.25
	fqEpqMWF6r.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.24
	D0dhEeGfv4.elf	Get hash	malicious	Gafgyt, Mirai	Browse	162.213.35.25

ASNs

Match	Associated Sample Name / URL	SHA 256	Detection	Threat Name	Link	Context
CANONICAL-ASGB	93dYAEq6GA.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	TCke75ESG2.elf	Get hash	malicious	Gafgyt	Browse	91.189.91.42
	OTpMIf3qBf.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	aZxA9dZCxS.elf	Get hash	malicious	Mirai, Okiru	Browse	185.125.190.26
	Pb7emU2ZDo.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	EQYrfnHzXO.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42
	Id2uxwyyf8.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	cR7iTvKIZm.elf	Get hash	malicious	Mirai, Okiru	Browse	185.125.190.26
	C5fMgX1ZyY.elf	Get hash	malicious	Gafgyt, Mirai	Browse	91.189.91.42
	U4EnIo30QR.elf	Get hash	malicious	Mirai, Okiru	Browse	91.189.91.42

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

⊘No created / dropped files found

Static File Info

General

File type:	ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, stripped
Entropy (8bit):	6.345361568996568
TrID:	ELF Executable and Linkable format (Linux) (4029/14) 50.16% ELF Executable and Linkable format (generic) (4004/1) 49.84%
File name:	RJ93lr3oq2.elf
File size:	72'380 bytes
MD5:	9363e31f6a3cc4562b85a88d51cb4aa6
SHA1:	4636d64fab27064aaf165844fb8cd9a0c9bcb917
SHA256:	c401fb37ba661c8e0806530b55de040743048d23035be6694b841c9c69a427ab
SHA512:	614787798a0f09773fbae4684de088257a75c439480c83d793f82c6d887af4df86203a47ac0fea2be57f1d23fae14a31d379023832bf853f123e9a66513b175b
SSDEEP:	1536:oDzmIr9EhaLzh/dNKt7K+WgAWuIFUN31gGkMGBgyr:gV6haLzgt2lWqKGob
TLSH:	7D630949E753D0F1EC074970019BFABF8A30BE678420DD5DEB80FED59D32A92604A725
File Content Preview:	.ELF....................X...4...........4. ...(.........................................t...t...t...T...4...........Q.td................................d..../..................U......=.....t..1...................u........t...$.............................

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, little endian
Version:	1 (current)
Machine:	Intel 80386
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x8048158
Flags:	0x0
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	71940
Section Header Size:	40
Number of Section Headers:	11
Header String Table Index:	10

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x8048094	0x94	0x11	0x0	0x6	AX	1
.text	PROGBITS	0x80480b0	0xb0	0xf24c	0x0	0x6	AX	16
.fini	PROGBITS	0x80572fc	0xf2fc	0xc	0x0	0x6	AX	1
.rodata	PROGBITS	0x8057320	0xf320	0x15ac	0x0	0x2	A	32
.ctors	PROGBITS	0x8059074	0x11074	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x805907c	0x1107c	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x8059098	0x11098	0x30	0x0	0x3	WA	8
.bss	NOBITS	0x80590e0	0x110c8	0x6c8	0x0	0x3	WA	32
.comment	PROGBITS	0x0	0x110c8	0x7f2	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x118ba	0x47	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x8048000	0x8048000	0x108cc	0x108cc	6.4359	0x5	R E	0x1000	.init .text .fini .rodata
LOAD	0x11074	0x8059074	0x8059074	0x54	0x734	1.5455	0x6	RW	0x1000	.ctors .dtors .data .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x6	RW	0x4

Network Behavior

Network Port Distribution

TCP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 26, 2024 04:57:03.201746941 CEST	48202	443	192.168.2.13	185.125.190.26
Apr 26, 2024 04:57:34.945677996 CEST	48202	443	192.168.2.13	185.125.190.26

UDP Packets

Timestamp	Source Port	Dest Port	Source IP	Dest IP
Apr 26, 2024 04:59:37.281816006 CEST	43747	53	192.168.2.13	8.8.8.8
Apr 26, 2024 04:59:37.281913042 CEST	32887	53	192.168.2.13	8.8.8.8
Apr 26, 2024 04:59:37.460550070 CEST	53	43747	8.8.8.8	192.168.2.13
Apr 26, 2024 04:59:37.461982012 CEST	53	32887	8.8.8.8	192.168.2.13

DNS Queries

Timestamp	Source IP	Dest IP	Trans ID	OP Code	Name	Type	Class	DNS over HTTPS
Apr 26, 2024 04:59:37.281816006 CEST	192.168.2.13	8.8.8.8	0x19b1	Standard query (0)	daisy.ubuntu.com	A (IP address)	IN (0x0001)	false
Apr 26, 2024 04:59:37.281913042 CEST	192.168.2.13	8.8.8.8	0x6704	Standard query (0)	daisy.ubuntu.com	28	IN (0x0001)	false

DNS Answers

Timestamp	Source IP	Dest IP	Trans ID	Reply Code	Name	CName	Address	Type	Class	DNS over HTTPS
Apr 26, 2024 04:59:37.460550070 CEST	8.8.8.8	192.168.2.13	0x19b1	No error (0)	daisy.ubuntu.com		162.213.35.25	A (IP address)	IN (0x0001)	false
Apr 26, 2024 04:59:37.460550070 CEST	8.8.8.8	192.168.2.13	0x19b1	No error (0)	daisy.ubuntu.com		162.213.35.24	A (IP address)	IN (0x0001)	false

System Behavior

Analysis Process: RJ93lr3oq2.elf PID: 5435, Parent PID: 5359

General

Start time (UTC):	02:56:50
Start date (UTC):	26/04/2024
Path:	/tmp/RJ93lr3oq2.elf
Arguments:	/tmp/RJ93lr3oq2.elf
File size:	72380 bytes
MD5 hash:	9363e31f6a3cc4562b85a88d51cb4aa6

Chronological Activities

Analysis Process: RJ93lr3oq2.elf PID: 5436, Parent PID: 5435

General

Start time (UTC):	02:56:50
Start date (UTC):	26/04/2024
Path:	/tmp/RJ93lr3oq2.elf
Arguments:	-
File size:	72380 bytes
MD5 hash:	9363e31f6a3cc4562b85a88d51cb4aa6

Chronological Activities

Analysis Process: RJ93lr3oq2.elf PID: 5437, Parent PID: 5435

General

Start time (UTC):	02:56:50
Start date (UTC):	26/04/2024
Path:	/tmp/RJ93lr3oq2.elf
Arguments:	-
File size:	72380 bytes
MD5 hash:	9363e31f6a3cc4562b85a88d51cb4aa6

Chronological Activities

Analysis Process: RJ93lr3oq2.elf PID: 5438, Parent PID: 5437

General

Start time (UTC):	02:56:50
Start date (UTC):	26/04/2024
Path:	/tmp/RJ93lr3oq2.elf
Arguments:	-
File size:	72380 bytes
MD5 hash:	9363e31f6a3cc4562b85a88d51cb4aa6

Description:	An adversary may attempt to get detailed information about the operating system and hardware, including version, patches, hotfixes, service packs, and architecture. Adversaries may use the information from System Information Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	Command: Command Execution, Process: OS API Execution, Process: Process Creation
Platforms:	IaaS, Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may obfuscate command and control traffic to make it more difficult to detect. Command and control (C2) communications are hidden (but not necessarily encrypted) in an attempt to make the content more difficult to discover or decipher and to make the communication less conspicuous and hide commands from being seen. This encompasses many methods, such as adding junk data to protocol traffic, using steganography, or impersonating legitimate protocols.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may employ a known encryption algorithm to conceal command and control traffic rather than relying on any inherent protections provided by a communication protocol. Despite the use of a secure algorithm, these implementations may be vulnerable to reverse engineering if secret keys are encoded and/or generated within malware samples/configuration files.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may use an OSI non-application layer protocol for communication between host and C2 server or among infected hosts within a network. The list of possible protocols is extensive.Specific examples include use of network layer protocols, such as the Internet Control Message Protocol (ICMP), transport layer protocols, such as the User Datagram Protocol (UDP), session layer protocols, such as Socket Secure (SOCKS), as well as redirected/tunneled protocols, such as Serial over LAN (SOL).
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Network, Windows
Url:	Open detailed description by Mitre

Description:	Adversaries may communicate using OSI application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server.
Tactics:	Command and Control
Data Sources:	Network Traffic: Network Traffic Content, Network Traffic: Network Traffic Flow
Platforms:	Linux, macOS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

Loading Joe Sandbox Report ...

Warning!

Linux Analysis Report RJ93lr3oq2.elf

Overview

General Information

Detection

Signatures

Classification

Analysis Advice

General Information

Runtime Messages

Process Tree

Yara Signatures

Initial Sample

Memory Dumps

Snort Signatures

Joe Sandbox Signatures

AV Detection

Bitcoin Miner

Networking

System Summary

Persistence and Installation Behavior

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

World Map of Contacted IPs

Public IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

Network Port Distribution

TCP Packets

UDP Packets

DNS Queries

DNS Answers

System Behavior

Analysis Process: RJ93lr3oq2.elf PID: 5435, Parent PID: 5359

General

Chronological Activities

Analysis Process: RJ93lr3oq2.elf PID: 5436, Parent PID: 5435

General

Chronological Activities

Analysis Process: RJ93lr3oq2.elf PID: 5437, Parent PID: 5435

General

Chronological Activities

Analysis Process: RJ93lr3oq2.elf PID: 5438, Parent PID: 5437

General

Chronological Activities

Linux Analysis Report
RJ93lr3oq2.elf