Linux Analysis Report
vlxx.x86_64.elf

Overview

General Information

Sample name: vlxx.x86_64.elf
Analysis ID: 1431583
MD5: a7b36a97c0b37ebe41a473a480ad8a97
SHA1: 5ae075d11a85972e0f18925087d478623de1e8f6
SHA256: f33d9bdc8ab8d24b177cf19bfa2eede107e5749413734955002cbf8813523772
Infos:

Detection

Mirai, Okiru
Score: 84
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
Yara detected Mirai
Yara detected Okiru
Machine Learning detection for sample
Found strings indicative of a multi-platform dropper
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample has stripped symbol table
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Yara signature match

Classification

Name Description Attribution Blogpost URLs Link
Mirai Mirai is one of the first significant botnets targeting exposed networking devices running Linux. Found in August 2016 by MalwareMustDie, its name means "future" in Japanese. Nowadays it targets a wide range of networked embedded devices such as IP cameras, home routers (many vendors involved), and other IoT devices. Since the source code was published on "Hack Forums" many variants of the Mirai family appeared, infecting mostly home networks all around the world. No Attribution https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai

AV Detection
barindex
Antivirus / Scanner detection for submitted sample
Source: vlxx.x86_64.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: vlxx.x86_64.elf Virustotal: Detection: 43% Perma Link
Source: vlxx.x86_64.elf ReversingLabs: Detection: 48%
Machine Learning detection for sample
Source: vlxx.x86_64.elf Joe Sandbox ML: detected
Found strings indicative of a multi-platform dropper
Source: vlxx.x86_64.elf String: HTTP/1.1 200 OKcundi.armcundi.arm5cundi.arm6cundi.arm7cundi.mipscundi.mpslcundi.x86_64cundi.sh4/proc//proc/%s/exe/proc/self/exevar/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdvar/tmp/soniahicorestm_hi3511_dvr/bin/busybox/usr/lib/systemd/systemdshellmnt/sys/boot/media/srv/var/run/sbin/lib/etc/dev/home/Davincitelnetsshwatchdog/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr/bashhttpdtelnetddropbearencodersystem/root/dvr_gui//root/dvr_app//anko-app//opt/anko-app/ankosample _8182T_1104/usr/libexec/openssh/sftp-serverwgetcurlecho/proc/proc/%d/cmdlineabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/usr/sbin/reboot/usr/bin/reboot/usr/sbin/shutdown/usr/bin/shutdown/usr/sbin/poweroff/usr/bin/poweroff/usr/sbin/halt/usr/bin/halt3f
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: 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
Source: unknown Network traffic detected: HTTP traffic on port 48202 -> 443

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: vlxx.x86_64.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: vlxx.x86_64.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_9e9530a7 Author: unknown
Source: vlxx.x86_64.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_d4227dbf Author: unknown
Source: vlxx.x86_64.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_d996d335 Author: unknown
Source: vlxx.x86_64.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_620087b9 Author: unknown
Source: vlxx.x86_64.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_33b4111a Author: unknown
Source: vlxx.x86_64.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_564b8eda Author: unknown
Source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_28a2fe0c Author: unknown
Source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_9e9530a7 Author: unknown
Source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_d4227dbf Author: unknown
Source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_d996d335 Author: unknown
Source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_620087b9 Author: unknown
Source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_33b4111a Author: unknown
Source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_564b8eda Author: unknown
Source: Process Memory Space: vlxx.x86_64.elf PID: 5436, type: MEMORYSTR Matched rule: Linux_Trojan_Gafgyt_28a2fe0c 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: HTTP/1.1 200 OKcundi.armcundi.arm5cundi.arm6cundi.arm7cundi.mipscundi.mpslcundi.x86_64cundi.sh4/proc//proc/%s/exe/proc/self/exevar/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdvar/tmp/soniahicorestm_hi3511_dvr/bin/busybox/usr/lib/systemd/systemdshellmnt/sys/boot/media/srv/var/run/sbin/lib/etc/dev/home/Davincitelnetsshwatchdog/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr/bashhttpdtelnetddropbearencodersystem/root/dvr_gui//root/dvr_app//anko-app//opt/anko-app/ankosample _8182T_1104/usr/libexec/openssh/sftp-serverwgetcurlecho/proc/proc/%d/cmdlineabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/usr/sbin/reboot/usr/bin/reboot/usr/sbin/shutdown/usr/bin/shutdown/usr/sbin/poweroff/usr/bin/poweroff/usr/sbin/halt/usr/bin/halt3f
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Yara signature match
Source: vlxx.x86_64.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: vlxx.x86_64.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_9e9530a7 reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = d6ad6512051e87c8c35dc168d82edd071b122d026dce21d39b9782b3d6a01e50, id = 9e9530a7-ad4d-4a44-b764-437b7621052f, last_modified = 2021-09-16
Source: vlxx.x86_64.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_d4227dbf reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 58c4b1d4d167876b64cfa10f609911a80284180e4db093917fea16fae8ccd4e3, id = d4227dbf-6ab4-4637-a6ba-0e604acaafb4, last_modified = 2021-09-16
Source: vlxx.x86_64.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_d996d335 reference_sample = b511eacd4b44744c8cf82d1b4a9bc6f1022fe6be7c5d17356b171f727ddc6eda, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = e9ccb8412f32187c309b0e9afcc3a6da21ad2f1ffa251c27f9f720ccb284e3ac, id = d996d335-e049-4052-bf36-6cd07c911a8b, last_modified = 2021-09-16
Source: vlxx.x86_64.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_620087b9 reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 06cd7e6eb62352ec2ccb9ed48e58c0583c02fefd137cd048d053ab30b5330307, id = 620087b9-c87d-4752-89e8-ca1c16486b28, last_modified = 2021-09-16
Source: vlxx.x86_64.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_33b4111a reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 9c3b63b9a0f54006bae12abcefdb518904a85f78be573f0780f0a265b12d2d6e, id = 33b4111a-e59e-48db-9d74-34ca44fcd9f5, last_modified = 2021-09-16
Source: vlxx.x86_64.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_564b8eda reference_sample = ff04921d7bf9ca01ae33a9fc0743dce9ca250e42a33547c5665b1c9a0b5260ee, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 63a9e43902e7db0b7a20498b5a860e36201bacc407e9e336faca0b7cfbc37819, id = 564b8eda-6f0e-45b8-bef6-d61b0f090a36, last_modified = 2021-09-16
Source: 5436.1.0000000000400000.000000000041a000.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: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_9e9530a7 reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = d6ad6512051e87c8c35dc168d82edd071b122d026dce21d39b9782b3d6a01e50, id = 9e9530a7-ad4d-4a44-b764-437b7621052f, last_modified = 2021-09-16
Source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_d4227dbf reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 58c4b1d4d167876b64cfa10f609911a80284180e4db093917fea16fae8ccd4e3, id = d4227dbf-6ab4-4637-a6ba-0e604acaafb4, last_modified = 2021-09-16
Source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_d996d335 reference_sample = b511eacd4b44744c8cf82d1b4a9bc6f1022fe6be7c5d17356b171f727ddc6eda, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = e9ccb8412f32187c309b0e9afcc3a6da21ad2f1ffa251c27f9f720ccb284e3ac, id = d996d335-e049-4052-bf36-6cd07c911a8b, last_modified = 2021-09-16
Source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_620087b9 reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 06cd7e6eb62352ec2ccb9ed48e58c0583c02fefd137cd048d053ab30b5330307, id = 620087b9-c87d-4752-89e8-ca1c16486b28, last_modified = 2021-09-16
Source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Gafgyt_33b4111a reference_sample = 01da73e0d425b4d97c5ad75c49657f95618b394d09bd6be644eb968a3b894961, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 9c3b63b9a0f54006bae12abcefdb518904a85f78be573f0780f0a265b12d2d6e, id = 33b4111a-e59e-48db-9d74-34ca44fcd9f5, last_modified = 2021-09-16
Source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY Matched rule: Linux_Trojan_Mirai_564b8eda reference_sample = ff04921d7bf9ca01ae33a9fc0743dce9ca250e42a33547c5665b1c9a0b5260ee, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 63a9e43902e7db0b7a20498b5a860e36201bacc407e9e336faca0b7cfbc37819, id = 564b8eda-6f0e-45b8-bef6-d61b0f090a36, last_modified = 2021-09-16
Source: Process Memory Space: vlxx.x86_64.elf PID: 5436, 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: mal84.troj.linELF@0/0@2/0

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: vlxx.x86_64.elf, type: SAMPLE
Source: Yara match File source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: vlxx.x86_64.elf PID: 5436, type: MEMORYSTR
Yara detected Okiru
Source: Yara match File source: vlxx.x86_64.elf, type: SAMPLE
Source: Yara match File source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: vlxx.x86_64.elf PID: 5436, type: MEMORYSTR

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: vlxx.x86_64.elf, type: SAMPLE
Source: Yara match File source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: vlxx.x86_64.elf PID: 5436, type: MEMORYSTR
Yara detected Okiru
Source: Yara match File source: vlxx.x86_64.elf, type: SAMPLE
Source: Yara match File source: 5436.1.0000000000400000.000000000041a000.r-x.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: vlxx.x86_64.elf PID: 5436, 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 162.213.35.24 true