Linux Analysis Report
dlr.arm7.elf

Overview

General Information

Sample name: dlr.arm7.elf
Analysis ID: 1546740
MD5: 25a86731d1a9438d58651943ebbe60df
SHA1: 5e373c976aeb3296accaa191bc635d86fb0c254e
SHA256: 199bbc0daaeae9fc3998feae15204f991cf95884b8882e941234b1722c222780
Tags: elfuser-abuse_ch
Infos:

Detection

Mirai, Okiru
Score: 76
Range: 0 - 100
Whitelisted: false

Signatures

Antivirus detection for dropped file
Multi AV Scanner detection for submitted file
Yara detected Mirai
Yara detected Okiru
Contains symbols with names commonly found in malware
Found strings indicative of a multi-platform dropper
HTTP GET or POST without a user agent
Sample and/or dropped files contains symbols with suspicious names
Sample has stripped symbol table
Uses the "uname" system call to query kernel version information (possible evasion)
Writes ELF files to disk

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 detection for dropped file
Source: /tmp/byte Avira: detection malicious, Label: EXP/ELF.Mirai.Bootnet.o
Multi AV Scanner detection for submitted file
Source: dlr.arm7.elf ReversingLabs: Detection: 44%
Found strings indicative of a multi-platform dropper
Source: byte.12.dr String: byte/proc/%d/net/tcp %*d: %*x:%x/proc//proc/%s/exe/proc/self/exe/proc/proc/%d/cmdlinenetstatwgettftpftpcurlbusybox/bin/busyboxvar/Challengeapp/hi3511gmDVRiboxusr/dvr_main _8182T_1108mnt/mtd/app/guivar/Kylinl0 c/udevdanko-app/ankosample _8182T_1104var/tmp/soniahicorestm_hi3511_dvr/usr/lib/systemd/systemd/usr/libexec/openssh/sftp-serverusr/shellmnt/sys/bin/boot/media/srv/var/run/sbin/lib/etc/dev/home/Davincitelnetsshwatchdog/var/spool/var/Sofiasshd/usr/compress/bin//compress/bin/compress/usr/bashhttpdtelnetddropbearropbearencodersystem/root/dvr_gui//root/dvr_app//anko-app//opt/soraJoshohajime902i13BzSxLxBxeYHOHO-LUGO7HOHO-U79OLJuYfouyf87NiGGeR69xdSO190Ij1XLOLKIKEEEDDEekjheory98escansh4MDMAfdevalvexscanspcMELTEDNINJAREALZflexsonskidsscanx86MISAKI-U79OLfoAxi102kxeswodjwodjwojMmKiy7f87lfreecookiex86sysgpufrgegesysupdater0DnAzepdNiGGeRD0nks69frgreu0x766f6964NiGGeRd0nks1337gafturasgbsigboa120i3UI49OaF3geaevaiolmao123123aOfurain0n4H34DggTrexewwasads1293194hjXDOthLaLosnggtwget-log1337SoraLOADERSAIAKINAggtq1378bfp919GRB1Q2SAIAKUSOggtr14FaSEXSLAVE1337ggtt1902a3u912u3u4haetrghbr19ju3dSORAojkf120hehahejeje922U2JDJA901F91SlaVLav12helpmedaddthhhhh2wgg9qphbqSlav3Th3seD3viceshzSmYZjYMQ5GbfSoRAxD123LOLiaGv5aA3SoRAxD420LOLinsomni640277SoraBeReppin1337ipcamCache66tlGg9QjUYfouyf876ke3TOKYO3lyEeaXul2dULCVxh93OfjHZ2zTY2gD6MZvKc7KU6rmMkiy6f87lA023UU4U24UIUTheWeekndmioribitchesA5p9TheWeekndsmnblkjpoiAbAdTokyosnebAkiruU8inTznetstatsAlexW9RCAKM20TnewnetwordAyo215WordnloadsBAdAsVWordmanenotyakuzaaBelchWordnetsobpBigN0gg0r420X0102I34fofhasfhiafhoiX19I239124UIUoismXSHJEHHEIIHWOolsVNwo12DeportedDeportedXkTer0GbA1onry0v03FortniteDownLOLZY0urM0mGaypussyfartlmaojkGrAcEnIgGeRaNnYvdGkqndCOqGeoRBe6BEGuiltyCrownZEuS69s4beBsEQhdHOHO-KSNDOZEuz69sat1234aj93hJ23scanHAalie293z0k2LscanJoshoARMHellInSideayyyGangShitscanJoshoARM5HighFryb1glscanJoshoARM6IWhPyucDbJboatnetzscanJoshoARM7IuYgujeIqnbtbatrtahzexsexscanJoshoM68KJJDUHEWBBBIBscanJoshoMIPSJSDGIEVIVAVIGcKbVkzGOPascanJoshoMPSLccADscanJoshoPPCKAZEN-OIU97chickenxingsscanJoshoSH4yakuskzm8KAZEN-PO78HcleanerscanJoshoSPCKAZEN-U79OLdbeefscanJoshoX86yakuz4c24KETASHI32ddrwelperscanarm5zPnr6HpQj2Kaishi-Iz90Ydeexecscanarm6zdrtfxcgyKatrina32doCP3fVjscanarm7zxcfhuioKsif91je39scanm68kKuasadvrhelperl33t_feetl33tl33tfeetscanmipsKuasaBinsMateeQnOhRk85rscanmpslLOLHHHOHOHBUIeXK20CL12ZnyamezyQBotBladeSPOOKYhikariwasherep4029x91xx32uhj4gbejhwizardzhra.outboatnetdbgcondiheroshimaskid.dbglzrdPownedSecurity69.aresfxlyazsxhyUNSTABLEunstable_is_the_story_of_the_universemoobotjnsd9sdoilayourmomgaeissdfjiougsiojOasisSEGRJIJHFVNHSNHEIHFOSapep999KOWAI-BAdAsVKOWAI-SADjHKipU7Ylairdropmalwareyour_verry_fucking_gayBig-Bro-Brightsefaexecshirololieagle.For-Gai-Mezy0x6axNLcloqkisvspookymythSwergjmioGKILLEJW(IU(JIWERGFJGJWJRGHetrhwewrtheIuFdKssCxzjSDFJIjioOnrYoXd666ewrtkjokethajbdf89wu823AAaasrdgsWsGA4@F6FGhostWuzHere666BOGOMIPSbeastmodedvrHelperbestmodesfc6aJfIuYDemon.xeno-is-godICY-P-0ODIJgSHUIHIfhwrgLhu87VhvQPzlunadakuexecbinTacoBellGodYololigangExecutionorbitclientAmnesi
HTTP GET or POST without a user agent
Source: global traffic HTTP traffic detected: GET /bins/byte.arm7 HTTP/1.0Data Raw: 00 00 Data Ascii:
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: unknown TCP traffic detected without corresponding DNS query: 154.216.16.39
Source: global traffic HTTP traffic detected: GET /bins/byte.arm7 HTTP/1.0Data Raw: 00 00 Data Ascii:

System Summary
barindex
Contains symbols with names commonly found in malware
Source: ELF static info symbol of initial sample Name: attack.c
Source: ELF static info symbol of initial sample Name: attack_get_opt_int
Source: ELF static info symbol of initial sample Name: attack_get_opt_ip
Source: ELF static info symbol of initial sample Name: attack_get_opt_str
Source: ELF static info symbol of initial sample Name: attack_init
Source: ELF static info symbol of initial sample Name: attack_method.c
Source: ELF static info symbol of initial sample Name: attack_method_greeth
Source: ELF static info symbol of initial sample Name: attack_method_greip
Source: ELF static info symbol of initial sample Name: attack_method_std
Source: ELF static info symbol of initial sample Name: attack_method_tcpack
Sample and/or dropped files contains symbols with suspicious names
Source: byte.12.dr ELF static info symbol of dropped file: __gnu_unwind_execute
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: mal76.troj.linELF@0/1@0/0
Writes ELF files to disk
Source: /tmp/dlr.arm7.elf (PID: 5539) File written: /tmp/byte Jump to dropped file
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/dlr.arm7.elf (PID: 5539) Queries kernel information via 'uname': Jump to behavior
Source: dlr.arm7.elf, 5539.1.000055baa5251000.000055baa537f000.rw-.sdmp Binary or memory string: U!/etc/qemu-binfmt/arm
Source: dlr.arm7.elf, 5539.1.00007ffe6fd9b000.00007ffe6fdbc000.rw-.sdmp Binary or memory string: x86_64/usr/bin/qemu-arm/tmp/dlr.arm7.elfSUDO_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/dlr.arm7.elf
Source: dlr.arm7.elf, 5539.1.000055baa5251000.000055baa537f000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: dlr.arm7.elf, 5539.1.00007ffe6fd9b000.00007ffe6fdbc000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: /tmp/byte, type: DROPPED
Yara detected Okiru
Source: Yara match File source: /tmp/byte, type: DROPPED

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: /tmp/byte, type: DROPPED
Yara detected Okiru
Source: Yara match File source: /tmp/byte, type: DROPPED

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
154.216.16.39
 unknown Seychelles
135357 SKHT-ASShenzhenKatherineHengTechnologyInformationCo false