Linux Analysis Report
x86_32.nn.elf

Overview

General Information

Sample name: x86_32.nn.elf
Analysis ID: 1522879
MD5: b4d9a21dc80f26f1999408dc812282b4
SHA1: 0ccac452422d57b147df6efca188edef2c1601ae
SHA256: 22a545fdb6ebbc5ba351c97d32cd008a1550a49891ae6112ddc8a6370376f053
Tags: elfGorillaGorillaBotnetMiraiuser-abuse_ch
Infos:

Detection

Okiru
Score: 64
Range: 0 - 100
Whitelisted: false

Signatures

Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Okiru
Executes the "rm" command used to delete files or directories
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
Yara signature match

Classification

AV Detection
barindex
Multi AV Scanner detection for submitted file
Source: x86_32.nn.elf ReversingLabs: Detection: 36%
Found strings indicative of a multi-platform dropper
Source: x86_32.nn.elf String: Found And Killed Process: PID=%d, Realpath=%s/snap/snapd/15534/usr/lib/snapd/snapd/usr/libexec/openssh/sftp-serveranko-app/ankosample _8182T_11047815351681972surf2/proc/self/exe/proc/%s/exe/.(deleted)socket/tmp/usr/lib/systemd/*/usr/sbin/*/usr/sbin/agetty/usr/sbin/cron/usr/lib/policykit-1/polkitd/usr/bin/dbus-daemon/usr/lib/openssh/sftp-server-sshd**deamon*/opt/app/monitor/z/secom//usr/lib/mnt/sys/boot/media/srv/sbin/etc/dev/telnetbashhttpdtelnetddropbearencodersystem/var/tmp/wlancontarm.nnarm5.nnarm6.nnm68k.nnmips.nnmipsel.nnpowerpc.nnsparc.nnx86_32.nnx86_64.nn/initvar/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdvar/tmp/soniahicorestm_hi3511_dvr/bin/busybox/usr/lib/systemd/systemdshellvar/run/home/Davincissh/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr//root/dvr_gui//root/dvr_app//anko-app//opt/wgetcurlping/pswiresharktcpdumpnetstatpythoniptablesnanonvimgdbpkillkillallapt487154914:1553<41<515791446<614561;814994;8153;148;14<5which gdb > /dev/null 2>&1which lldb > /dev/null 2>&1which dtrace > /dev/null 2>&1which truss > /dev/null 2>&1which ptrace > /dev/null 2>&1LD_PRELOADLD_LIBRARY_PATHLD_AUDIT/procw/etc/motd%s
Source: unknown TCP traffic detected without corresponding DNS query: 54.171.230.55
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: 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: 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: 91.189.91.42
Source: unknown Network traffic detected: HTTP traffic on port 443 -> 33606
Source: unknown Network traffic detected: HTTP traffic on port 33606 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443

System Summary
barindex
Malicious sample detected (through community Yara rule)
Source: x86_32.nn.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_5bf62ce4 Author: unknown
Source: x86_32.nn.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_b14f4c5d Author: unknown
Source: x86_32.nn.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_5f7b67b8 Author: unknown
Source: x86_32.nn.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_88de437f Author: unknown
Source: x86_32.nn.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_389ee3e9 Author: unknown
Source: x86_32.nn.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_cc93863b Author: unknown
Source: x86_32.nn.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_8aa7b5d3 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: Found And Killed Process: PID=%d, Realpath=%s/snap/snapd/15534/usr/lib/snapd/snapd/usr/libexec/openssh/sftp-serveranko-app/ankosample _8182T_11047815351681972surf2/proc/self/exe/proc/%s/exe/.(deleted)socket/tmp/usr/lib/systemd/*/usr/sbin/*/usr/sbin/agetty/usr/sbin/cron/usr/lib/policykit-1/polkitd/usr/bin/dbus-daemon/usr/lib/openssh/sftp-server-sshd**deamon*/opt/app/monitor/z/secom//usr/lib/mnt/sys/boot/media/srv/sbin/etc/dev/telnetbashhttpdtelnetddropbearencodersystem/var/tmp/wlancontarm.nnarm5.nnarm6.nnm68k.nnmips.nnmipsel.nnpowerpc.nnsparc.nnx86_32.nnx86_64.nn/initvar/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdvar/tmp/soniahicorestm_hi3511_dvr/bin/busybox/usr/lib/systemd/systemdshellvar/run/home/Davincissh/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr//root/dvr_gui//root/dvr_app//anko-app//opt/wgetcurlping/pswiresharktcpdumpnetstatpythoniptablesnanonvimgdbpkillkillallapt487154914:1553<41<515791446<614561;814994;8153;148;14<5which gdb > /dev/nu
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Yara signature match
Source: x86_32.nn.elf, type: SAMPLE Matched rule: Linux_Trojan_Gafgyt_5bf62ce4 reference_sample = 4c6aeaa6f6a0c40a3f4116a2e19e669188a8b1678a8930350889da1bab531c68, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Gafgyt, fingerprint = 3ffc398303f7208e77c4fbdfb50ac896e531b7cee3be2fa820bc8d70cfb20af3, id = 5bf62ce4-619b-4d46-b221-c5bf552474bb, last_modified = 2021-09-16
Source: x86_32.nn.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_b14f4c5d os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = a70d052918dd2fbc66db241da6438015130f0fb6929229bfe573546fe98da817, id = b14f4c5d-054f-46e6-9fa8-3588f1ef68b7, last_modified = 2021-09-16
Source: x86_32.nn.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_5f7b67b8 os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 6cb5fb0b7c132e9c11ac72da43278025b60810ea3733c9c6d6ca966163185940, id = 5f7b67b8-3d7b-48a4-8f03-b6f2c92be92e, last_modified = 2021-09-16
Source: x86_32.nn.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_88de437f reference_sample = 8dc745a6de6f319cd6021c3e147597315cc1be02099d78fc8aae94de0e1e4bc6, os = linux, severity = x86, creation_date = 2021-01-12, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = c19eb595c2b444a809bef8500c20342c9f46694d3018e268833f9b884133a1ea, id = 88de437f-9c98-4e1d-96c0-7b433c99886a, last_modified = 2021-09-16
Source: x86_32.nn.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_389ee3e9 reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 59f2359dc1f41d385d639d157b4cd9fc73d76d8abb7cc09d47632bb4c9a39e6e, id = 389ee3e9-70c1-4c93-a999-292cf6ff1652, last_modified = 2022-01-26
Source: x86_32.nn.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_cc93863b reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = f3ecd30f0b511a8e92cfa642409d559e7612c3f57a1659ca46c77aca809a00ac, id = cc93863b-1050-40ba-9d02-5ec9ce6a3a28, last_modified = 2022-01-26
Source: x86_32.nn.elf, type: SAMPLE Matched rule: Linux_Trojan_Mirai_8aa7b5d3 reference_sample = 5217f2a46cb93946e04ab00e385ad0fe0a2844b6ea04ef75ee9187aac3f3d52f, os = linux, severity = x86, creation_date = 2022-01-05, scan_context = file, memory, license = Elastic License v2, threat_name = Linux.Trojan.Mirai, fingerprint = 02a2c18c362df4b1fceb33f3b605586514ba9a00c7afedf71c04fa54d8146444, id = 8aa7b5d3-e1eb-4b55-b36a-0d3a242c06e9, last_modified = 2022-01-26
Source: classification engine Classification label: mal64.troj.linELF@0/0@0/0
Executes the "rm" command used to delete files or directories
Source: /usr/bin/dash (PID: 6229) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.r4U3P9onlX /tmp/tmp.RK6uLKp1lE /tmp/tmp.RFTJY3Zhu7 Jump to behavior
Source: /usr/bin/dash (PID: 6230) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.r4U3P9onlX /tmp/tmp.RK6uLKp1lE /tmp/tmp.RFTJY3Zhu7 Jump to behavior

Stealing of Sensitive Information
barindex
Yara detected Okiru
Source: Yara match File source: x86_32.nn.elf, type: SAMPLE

Remote Access Functionality
barindex
Yara detected Okiru
Source: Yara match File source: x86_32.nn.elf, type: SAMPLE

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
54.171.230.55
 unknown United States
16509 AMAZON-02US 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