Linux Analysis Report
nsharm7.elf

Overview

General Information

Sample name: nsharm7.elf
Analysis ID: 1579332
MD5: 1a4375f6423f0c96f3d2377d1c157595
SHA1: fec7b3bd66d1d4a88b7a22511962007f7b99e34b
SHA256: 4d315e63c562b354627d6b169e197d5cf108f318b446dac59c8edff283314e9d
Tags: elfuser-abuse_ch
Infos:

Detection

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

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Yara detected Mirai
Sends malformed DNS queries
Detected TCP or UDP traffic on non-standard ports
Executes the "rm" command used to delete files or directories
Sample has stripped symbol table
Sample listens on a socket
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Uses the "uname" system call to query kernel version information (possible evasion)

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: nsharm7.elf Avira: detected
Multi AV Scanner detection for submitted file
Source: nsharm7.elf ReversingLabs: Detection: 36%
Source: nsharm7.elf Virustotal: Detection: 31% Perma Link

Networking
barindex
Sends malformed DNS queries
Source: global traffic DNS traffic detected: malformed DNS query: shitrocket.dyn. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: hikvision.geek. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: catlovingfools.geek. [malformed]
Source: global traffic DNS traffic detected: malformed DNS query: catvision.dyn. [malformed]
Detected TCP or UDP traffic on non-standard ports
Source: global traffic TCP traffic: 192.168.2.23:34574 -> 86.107.100.19:12084
Source: global traffic TCP traffic: 192.168.2.23:34788 -> 212.64.215.71:10004
Sample listens on a socket
Source: /tmp/nsharm7.elf (PID: 6250) Socket: 127.0.0.1:1172 Jump to behavior
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Source: global traffic TCP traffic: 192.168.2.23:43928 -> 91.189.91.42:443
Source: global traffic TCP traffic: 192.168.2.23:42836 -> 91.189.91.43:443
Source: global traffic TCP traffic: 192.168.2.23:42516 -> 109.202.202.202:80
Source: unknown TCP traffic detected without corresponding DNS query: 91.189.91.42
Source: unknown TCP traffic detected without corresponding DNS query: 101.50.82.95
Source: unknown TCP traffic detected without corresponding DNS query: 169.22.205.200
Source: unknown TCP traffic detected without corresponding DNS query: 5.152.137.214
Source: unknown TCP traffic detected without corresponding DNS query: 65.89.242.238
Source: unknown TCP traffic detected without corresponding DNS query: 34.184.186.106
Source: unknown TCP traffic detected without corresponding DNS query: 1.146.100.105
Source: unknown TCP traffic detected without corresponding DNS query: 150.25.88.76
Source: unknown TCP traffic detected without corresponding DNS query: 24.75.162.174
Source: unknown TCP traffic detected without corresponding DNS query: 14.81.217.236
Source: unknown TCP traffic detected without corresponding DNS query: 32.48.0.41
Source: unknown TCP traffic detected without corresponding DNS query: 205.113.212.60
Source: unknown TCP traffic detected without corresponding DNS query: 34.82.192.39
Source: unknown TCP traffic detected without corresponding DNS query: 197.140.109.93
Source: unknown TCP traffic detected without corresponding DNS query: 148.199.40.187
Source: unknown TCP traffic detected without corresponding DNS query: 29.20.48.236
Source: unknown TCP traffic detected without corresponding DNS query: 198.30.146.225
Source: unknown TCP traffic detected without corresponding DNS query: 182.185.28.48
Source: unknown TCP traffic detected without corresponding DNS query: 120.14.188.96
Source: unknown TCP traffic detected without corresponding DNS query: 215.188.0.78
Source: unknown TCP traffic detected without corresponding DNS query: 138.239.91.64
Source: unknown TCP traffic detected without corresponding DNS query: 179.105.237.192
Source: unknown TCP traffic detected without corresponding DNS query: 89.187.65.140
Source: unknown TCP traffic detected without corresponding DNS query: 108.191.92.45
Source: unknown TCP traffic detected without corresponding DNS query: 124.98.86.52
Source: unknown TCP traffic detected without corresponding DNS query: 216.43.129.143
Source: unknown TCP traffic detected without corresponding DNS query: 156.69.237.221
Source: unknown TCP traffic detected without corresponding DNS query: 88.36.55.230
Source: unknown TCP traffic detected without corresponding DNS query: 182.47.32.3
Source: unknown TCP traffic detected without corresponding DNS query: 36.233.106.40
Source: unknown TCP traffic detected without corresponding DNS query: 195.21.89.87
Source: unknown TCP traffic detected without corresponding DNS query: 31.161.171.88
Source: unknown TCP traffic detected without corresponding DNS query: 139.244.25.87
Source: unknown TCP traffic detected without corresponding DNS query: 218.212.94.205
Source: unknown TCP traffic detected without corresponding DNS query: 111.39.7.197
Source: unknown TCP traffic detected without corresponding DNS query: 21.236.131.147
Source: unknown TCP traffic detected without corresponding DNS query: 104.251.91.128
Source: unknown TCP traffic detected without corresponding DNS query: 12.169.156.116
Source: unknown TCP traffic detected without corresponding DNS query: 217.123.243.45
Source: unknown TCP traffic detected without corresponding DNS query: 194.66.133.56
Source: unknown TCP traffic detected without corresponding DNS query: 154.103.172.79
Source: unknown TCP traffic detected without corresponding DNS query: 82.222.192.162
Source: unknown TCP traffic detected without corresponding DNS query: 45.77.184.126
Source: unknown TCP traffic detected without corresponding DNS query: 191.230.22.196
Source: unknown TCP traffic detected without corresponding DNS query: 167.154.19.174
Source: unknown TCP traffic detected without corresponding DNS query: 125.42.221.8
Source: unknown TCP traffic detected without corresponding DNS query: 57.4.214.210
Source: unknown TCP traffic detected without corresponding DNS query: 99.100.16.91
Source: unknown TCP traffic detected without corresponding DNS query: 41.183.160.124
Source: unknown TCP traffic detected without corresponding DNS query: 42.235.39.231
Source: global traffic DNS traffic detected: DNS query: catlovingfools.geek
Source: global traffic DNS traffic detected: DNS query: shitrocket.dyn. [malformed]
Source: global traffic DNS traffic detected: DNS query: hikvision.geek. [malformed]
Source: global traffic DNS traffic detected: DNS query: catlovingfools.geek. [malformed]
Source: global traffic DNS traffic detected: DNS query: catvision.dyn. [malformed]
Source: unknown Network traffic detected: HTTP traffic on port 43928 -> 443
Source: unknown Network traffic detected: HTTP traffic on port 42836 -> 443
Sample has stripped symbol table
Source: ELF static info symbol of initial sample .symtab present: no
Source: classification engine Classification label: mal68.troj.linELF@0/0@6/0
Executes the "rm" command used to delete files or directories
Source: /usr/bin/dash (PID: 6222) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.K5KLlKIHcx /tmp/tmp.GpO1acuFux /tmp/tmp.zdKlLUAt0R Jump to behavior
Source: /usr/bin/dash (PID: 6223) Rm executable: /usr/bin/rm -> rm -f /tmp/tmp.K5KLlKIHcx /tmp/tmp.GpO1acuFux /tmp/tmp.zdKlLUAt0R Jump to behavior
Uses the "uname" system call to query kernel version information (possible evasion)
Source: /tmp/nsharm7.elf (PID: 6250) Queries kernel information via 'uname': Jump to behavior
Source: nsharm7.elf, 6250.1.00007ffcd2fb8000.00007ffcd2fd9000.rw-.sdmp, nsharm7.elf, 6252.1.00007ffcd2fb8000.00007ffcd2fd9000.rw-.sdmp, nsharm7.elf, 6306.1.00007ffcd2fb8000.00007ffcd2fd9000.rw-.sdmp Binary or memory string: !x86_64/usr/bin/qemu-arm/tmp/nsharm7.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/nsharm7.elf
Source: nsharm7.elf, 6306.1.000056305bee4000.000056305c056000.rw-.sdmp Binary or memory string: !/proc/78/exe1/proc/115/exe/arm/Q0A/usr/lib/x86_64-linux-gnu/xfce4/notifyd/xfce4-notifyd!/proc/17/exe1/usr/bin/vmtoolsdrm/ro10!/proc/202/exe0!/proc/18/exe1/proc/249/exe/arm/ro10!/proc/201/exe0!/proc/20/exe1/usr/bin/dbus-run-session0!/proc/157/exe0!/proc/21/exe1/proc/250/exe/arm/ro10!/proc/144/exe0!/proc/22/exe1/proc/721/exe/arm/ro10!/proc/141/exe0!/proc/23/exe1/proc/251/exe/arm/ro10!/proc/132/exe0!/proc/24/exe1/proc/1476/exe/arm/ro10!/proc/130/exe0!/proc/25/exe1/proc/252/exe/arm/ro10!/proc/128/exe0!/proc/26/exe1/usr/bin/VGAuthServiceo10!/proc/127/exe0!/proc/27/exe1/proc/253/exe/arm/ro10!/proc/126/exe0!/proc/28/exe1/usr/libexec/gnome-session-binary!/proc/125/exe0!/proc/29/exe1/proc/254/exe/arm/ro10!/proc/124/exe0!/proc/30/exe1/usr/bin'
Source: nsharm7.elf, 6306.1.000056305bee4000.000056305c056000.rw-.sdmp Binary or memory string: /usr/bin/vmtoolsd
Source: nsharm7.elf, 6250.1.000056305bee4000.000056305c056000.rw-.sdmp, nsharm7.elf, 6252.1.000056305bee4000.000056305c056000.rw-.sdmp, nsharm7.elf, 6306.1.000056305bee4000.000056305c056000.rw-.sdmp Binary or memory string: /etc/qemu-binfmtP
Source: nsharm7.elf, 6250.1.000056305bee4000.000056305c056000.rw-.sdmp, nsharm7.elf, 6252.1.000056305bee4000.000056305c056000.rw-.sdmp, nsharm7.elf, 6306.1.000056305bee4000.000056305c056000.rw-.sdmp Binary or memory string: /etc/qemu-binfmtP /proc/4444/exefce4/paneQ
Source: nsharm7.elf, 6250.1.000056305bee4000.000056305c056000.rw-.sdmp, nsharm7.elf, 6252.1.000056305bee4000.000056305c056000.rw-.sdmp, nsharm7.elf, 6306.1.000056305bee4000.000056305c056000.rw-.sdmp Binary or memory string: [0V!/etc/qemu-binfmt/arm
Source: nsharm7.elf, 6250.1.000056305bee4000.000056305c056000.rw-.sdmp, nsharm7.elf, 6252.1.000056305bee4000.000056305c056000.rw-.sdmp, nsharm7.elf, 6306.1.000056305bee4000.000056305c056000.rw-.sdmp Binary or memory string: /etc/qemu-binfmt/arm
Source: nsharm7.elf, 6250.1.00007ffcd2fb8000.00007ffcd2fd9000.rw-.sdmp, nsharm7.elf, 6252.1.00007ffcd2fb8000.00007ffcd2fd9000.rw-.sdmp, nsharm7.elf, 6306.1.00007ffcd2fb8000.00007ffcd2fd9000.rw-.sdmp Binary or memory string: /usr/bin/qemu-arm
Source: nsharm7.elf, 6306.1.00007ffcd2fb8000.00007ffcd2fd9000.rw-.sdmp Binary or memory string: qemu: uncaught target signal 11 (Segmentation fault) - core dumped

Stealing of Sensitive Information
barindex
Yara detected Mirai
Source: Yara match File source: nsharm7.elf, type: SAMPLE
Source: Yara match File source: 6306.1.00007f2d6c017000.00007f2d6c02f000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6250.1.00007f2d6c017000.00007f2d6c02f000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6252.1.00007f2d6c017000.00007f2d6c02f000.r-x.sdmp, type: MEMORY

Remote Access Functionality
barindex
Yara detected Mirai
Source: Yara match File source: nsharm7.elf, type: SAMPLE
Source: Yara match File source: 6306.1.00007f2d6c017000.00007f2d6c02f000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6250.1.00007f2d6c017000.00007f2d6c02f000.r-x.sdmp, type: MEMORY
Source: Yara match File source: 6252.1.00007f2d6c017000.00007f2d6c02f000.r-x.sdmp, type: MEMORY

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
16.90.195.142
 unknown United States
unknown unknown false
182.183.254.102
 unknown Pakistan
45595 PKTELECOM-AS-PKPakistanTelecomCompanyLimitedPK false
191.186.71.145
 unknown Brazil
28573 CLAROSABR false
187.82.196.51
 unknown Brazil
26615 TIMSABR false
45.12.189.17
 unknown United Kingdom
35085 ACORSOFR false
128.41.182.212
 unknown United Kingdom
55330 GCN-DCN-ASAFGHANTELECOMGOVERNMENTCOMMUNICATIONNETWORKA false
50.137.231.233
 unknown United States
7922 COMCAST-7922US false
194.155.226.13
 unknown United Kingdom
5503 RMIFLGB false
71.251.6.45
 unknown United States
701 UUNETUS false
199.212.31.192
 unknown Canada
19350 CENTENNIALCOLLEGECA false
16.197.86.88
 unknown United States
unknown unknown false
139.59.86.249
 unknown Singapore
14061 DIGITALOCEAN-ASNUS false
48.69.103.126
 unknown United States
2686 ATGS-MMD-ASUS false
179.18.249.94
 unknown Colombia
22698 AVANTELSASCO false
145.57.55.241
 unknown Netherlands
1103 SURFNET-NLSURFnetTheNetherlandsNL false
184.175.52.7
 unknown Canada
5645 TEKSAVVYCA false
117.20.6.90
 unknown Australia
45671 AS45671-NET-AUWholesaleServicesProviderAU false
1.128.184.69
 unknown Australia
1221 ASN-TELSTRATelstraCorporationLtdAU false
2.196.140.215
 unknown Italy
16232 ASN-TIMServiceProviderIT false
117.70.100.235
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
74.85.134.238
 unknown United States
13649 ASN-VINSUS false
134.197.7.71
 unknown United States
3851 NSHE-NEVADANETUS false
33.31.167.54
 unknown United States
2686 ATGS-MMD-ASUS false
205.137.217.139
 unknown United States
7046 RFC2270-UUNET-CUSTOMERUS false
142.130.161.78
 unknown Canada
13576 SDNW-13576US false
43.231.49.241
 unknown India
4837 CHINA169-BACKBONECHINAUNICOMChina169BackboneCN false
124.182.10.235
 unknown Australia
1221 ASN-TELSTRATelstraCorporationLtdAU false
126.82.127.45
 unknown Japan 17676 GIGAINFRASoftbankBBCorpJP false
57.164.147.88
 unknown Belgium
2686 ATGS-MMD-ASUS false
158.236.205.16
 unknown United States
1540 DNIC-ASBLK-01534-01546US false
4.21.66.172
 unknown United States
3356 LEVEL3US false
91.184.212.204
 unknown Cyprus
35432 CABLENET-ASCY false
60.181.24.12
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
55.113.177.77
 unknown United States
361 DNIC-ASBLK-00306-00371US false
92.237.207.39
 unknown United Kingdom
5089 NTLGB false
134.45.209.241
 unknown United States
395226 SACRAMENTO-COEUS false
82.156.253.85
 unknown China
12513 ECLIPSEGB false
11.70.172.46
 unknown United States
3356 LEVEL3US false
67.31.147.195
 unknown United States
202818 LEVEL3COMMUNICATIONSFR false
46.114.130.216
 unknown Germany
6805 TDDE-ASN1DE false
158.192.147.71
 unknown France
9159 CreditAgricoleFR false
176.38.45.4
 unknown Ukraine
39608 LANETUA-ASUA false
141.32.67.223
 unknown Germany
680 DFNVereinzurFoerderungeinesDeutschenForschungsnetzese false
88.9.29.170
 unknown Spain
3352 TELEFONICA_DE_ESPANAES false
28.18.33.139
 unknown United States
7922 COMCAST-7922US false
190.37.34.103
 unknown Venezuela
8048 CANTVServiciosVenezuelaVE false
116.252.33.102
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
96.214.8.57
 unknown United States
7922 COMCAST-7922US false
73.107.75.251
 unknown United States
7922 COMCAST-7922US false
57.188.219.213
 unknown Belgium
205080 SITA-CORPORATEBE false
5.240.142.100
 unknown Sweden
1257 TELE2EU false
217.186.25.18
 unknown Germany
6805 TDDE-ASN1DE false
11.19.226.42
 unknown United States
3356 LEVEL3US false
90.60.27.37
 unknown France
3215 FranceTelecom-OrangeFR false
146.132.148.32
 unknown United States
10695 WAL-MARTUS false
70.157.209.202
 unknown United States
6389 BELLSOUTH-NET-BLKUS false
107.116.47.49
 unknown United States
7018 ATT-INTERNET4US false
63.236.101.74
 unknown United States
21622 PR-NEWSWIRE-USA-1US false
161.28.193.210
 unknown United States
210 WEST-NET-WESTUS false
166.17.92.113
 unknown United States
206 CSC-IGN-AMERUS false
182.235.150.191
 unknown Taiwan; Republic of China (ROC)
9416 MULTIMEDIA-AS-APHoshinMultimediaCenterIncTW false
136.224.167.219
 unknown United States
22174 NET-SUC-TECH-ALFUS false
138.7.41.145
 unknown Australia
7575 AARNET-AS-APAustralianAcademicandResearchNetworkAARNe false
59.79.11.111
 unknown China
24364 CNGI-SH-IX-AS-APCERNET2IXatShanghaiJiaotongUniversity false
182.247.147.189
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
170.232.210.56
 unknown United States
11685 HNBCOL-ASUS false
168.157.210.225
 unknown United States
10430 WA-K20US false
89.3.246.24
 unknown France
20776 OUTREMER-ASFR false
130.127.133.219
 unknown United States
12148 CLEMSONUUS false
181.167.201.61
 unknown Argentina
10318 TelecomArgentinaSAAR false
196.74.188.240
 unknown Morocco
36903 MT-MPLSMA false
146.87.127.7
 unknown United Kingdom
786 JANETJiscServicesLimitedGB false
18.163.241.112
 unknown United States
16509 AMAZON-02US false
7.38.47.116
 unknown United States
3356 LEVEL3US false
123.132.173.4
 unknown China
4837 CHINA169-BACKBONECHINAUNICOMChina169BackboneCN false
148.243.205.109
 unknown Mexico
6503 AxtelSABdeCVMX false
195.20.14.9
 unknown France
43424 MAGICRETAILFR false
164.183.197.64
 unknown United States
37717 EL-KhawarizmiTN false
7.238.100.171
 unknown United States
3356 LEVEL3US false
182.84.98.221
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
214.68.131.128
 unknown United States
721 DNIC-ASBLK-00721-00726US false
144.20.235.236
 unknown Sweden
58541 CHINATELECOM-SHANDONG-QINGDAO-IDCQingdao266000CN false
139.177.229.101
 unknown United States
8968 BT-ITALIAIT false
90.18.247.102
 unknown France
3215 FranceTelecom-OrangeFR false
88.59.203.16
 unknown Italy
3269 ASN-IBSNAZIT false
102.165.19.216
 unknown South Africa
61317 ASDETUKhttpwwwheficedcomGB false
199.133.151.76
 unknown United States
4152 USDA-1US false
60.175.129.171
 unknown China
4134 CHINANET-BACKBONENo31Jin-rongStreetCN false
215.251.206.71
 unknown United States
721 DNIC-ASBLK-00721-00726US false
20.234.181.170
 unknown United States
8075 MICROSOFT-CORP-MSN-AS-BLOCKUS false
87.179.206.72
 unknown Germany
3320 DTAGInternetserviceprovideroperationsDE false
81.255.86.109
 unknown France
3215 FranceTelecom-OrangeFR false
1.253.60.59
 unknown Korea Republic of
9318 SKB-ASSKBroadbandCoLtdKR false
161.37.102.61
 unknown Spain
158 ERI-ASUS false
195.143.61.96
 unknown United Kingdom
8928 INTEROUTE25CanadaSquareCanaryWharf31stFloorGB false
96.1.63.87
 unknown Canada
852 ASN852CA false
219.31.171.166
 unknown Japan 17676 GIGAINFRASoftbankBBCorpJP false
92.191.124.64
 unknown France
12479 UNI2-ASES false
124.137.231.92
 unknown Korea Republic of
18302 SKG_NW-AS-KRSKTelecomKR false
140.23.194.121
 unknown United States
23700 FASTNET-AS-IDLinknet-FastnetASNID false

Contacted Domains

Name IP Active
catlovingfools.geek 37.49.226.109 true
catlovingfools.geek. [malformed] unknown unknown
shitrocket.dyn. [malformed] unknown unknown
hikvision.geek. [malformed] unknown unknown
catvision.dyn. [malformed] unknown unknown