Edit tour
Linux
Analysis Report
B7cl2k3l7y.elf
Overview
General Information
Sample name: | B7cl2k3l7y.elfrenamed because original name is a hash value |
Original sample name: | 5983859e0217f7efb38dd215bf326be2.elf |
Analysis ID: | 1426694 |
MD5: | 5983859e0217f7efb38dd215bf326be2 |
SHA1: | 2a9d56694c1ba4964f1c09045cd477386047845c |
SHA256: | 5e92122c2de27eadf25c4d6e53ed203eed6846099db1cd46b5aaa141cd6af498 |
Tags: | 32armelfmirai |
Infos: |
Detection
Score: | 60 |
Range: | 0 - 100 |
Whitelisted: | false |
Signatures
Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Sample is packed with UPX
ELF contains segments with high entropy indicating compressed/encrypted content
Executes the "rm" command used to delete files or directories
Sample contains only a LOAD segment without any section mappings
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
Analysis Advice
Static ELF header machine description suggests that the sample might not execute correctly on this machine. |
Exit code information suggests that the sample terminated abnormally, try to lookup the sample's target architecture. |
All HTTP servers contacted by the sample do not answer. The sample is likely an old dropper which does no longer work. |
Non-zero exit code suggests an error during the execution. Lookup the error code for hints. |
Static ELF header machine description suggests that the sample might only run correctly on MIPS or ARM architectures. |
Joe Sandbox version: | 40.0.0 Tourmaline |
Analysis ID: | 1426694 |
Start date and time: | 2024-04-16 13:59:41 +02:00 |
Joe Sandbox product: | CloudBasic |
Overall analysis duration: | 0h 4m 27s |
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: | B7cl2k3l7y.elfrenamed because original name is a hash value |
Original Sample Name: | 5983859e0217f7efb38dd215bf326be2.elf |
Detection: | MAL |
Classification: | mal60.evad.linELF@0/0@2/0 |
- VT rate limit hit for: B7cl2k3l7y.elf
Command: | /tmp/B7cl2k3l7y.elf |
PID: | 5509 |
Exit Code: | 139 |
Exit Code Info: | SIGSEGV (11) Segmentation fault invalid memory reference |
Killed: | False |
Standard Output: | |
Standard Error: | qemu: uncaught target signal 11 (Segmentation fault) - core dumped |
- system is lnxubuntu20
- dash New Fork (PID: 5472, Parent: 3632)
- dash New Fork (PID: 5473, Parent: 3632)
- dash New Fork (PID: 5474, Parent: 3632)
- dash New Fork (PID: 5475, Parent: 3632)
- dash New Fork (PID: 5476, Parent: 3632)
- dash New Fork (PID: 5477, Parent: 3632)
- dash New Fork (PID: 5478, Parent: 3632)
- dash New Fork (PID: 5479, Parent: 3632)
- dash New Fork (PID: 5480, Parent: 3632)
- dash New Fork (PID: 5481, Parent: 3632)
- cleanup
⊘No yara matches
⊘No Snort rule has matched
Click to jump to signature section
Show All Signature Results
AV Detection |
---|
Source: | Avira: |
Source: | ReversingLabs: |
Source: | TCP traffic: |
Source: | TCP traffic detected without corresponding DNS query: | ||
Source: | TCP traffic detected without corresponding DNS query: |
Source: | DNS traffic detected: |
Source: | String found in binary or memory: |
Source: | Network traffic detected: |
Source: | Program segment: |
Source: | Classification label: |
Data Obfuscation |
---|
Source: | String containing UPX found: | ||
Source: | String containing UPX found: | ||
Source: | String containing UPX found: |
Source: | Rm executable: | Jump to behavior | ||
Source: | Rm executable: | Jump to behavior |
Source: | Submission file: |
Source: | Queries kernel information via 'uname': | Jump to behavior |
Source: | Binary or memory string: | ||
Source: | Binary or memory string: | ||
Source: | Binary or memory string: | ||
Source: | Binary or memory string: | ||
Source: | Binary or memory string: |
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 | 11 Obfuscated Files or Information | OS Credential Dumping | 11 Security Software Discovery | Remote Services | Data from Local System | 1 Encrypted Channel | 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 | 1 File Deletion | LSASS Memory | Application Window Discovery | Remote Desktop Protocol | Data from Removable Media | 1 Non-Application Layer Protocol | 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 | 2 Application Layer Protocol | Automated Exfiltration | Data Encrypted for Impact |
⊘No configs have been found
Source | Detection | Scanner | Label | Link |
---|---|---|---|---|
58% | ReversingLabs | Linux.Trojan.Mirai | ||
100% | Avira | LINUX/AVI.Bot.eltil |
⊘No Antivirus matches
⊘No Antivirus matches
⊘No Antivirus matches
Name | IP | Active | Malicious | Antivirus Detection | Reputation |
---|---|---|---|---|---|
daisy.ubuntu.com | 162.213.35.25 | true | false | high |
Name | Source | Malicious | Antivirus Detection | Reputation |
---|---|---|---|---|
false | high |
- No. of IPs < 25%
- 25% < No. of IPs < 50%
- 50% < No. of IPs < 75%
- 75% < No. of IPs
IP | Domain | Country | Flag | ASN | ASN Name | Malicious |
---|---|---|---|---|---|---|
185.125.190.26 | unknown | United Kingdom | 41231 | CANONICAL-ASGB | false |
Match | Associated Sample Name / URL | SHA 256 | Detection | Threat Name | Link | Context |
---|---|---|---|---|---|---|
185.125.190.26 | Get hash | malicious | Mirai | Browse | ||
Get hash | malicious | Mirai | Browse | |||
Get hash | malicious | Mirai | Browse | |||
Get hash | malicious | Gafgyt, Mirai | Browse | |||
Get hash | malicious | Gafgyt, Mirai | Browse | |||
Get hash | malicious | Gafgyt, Mirai | Browse | |||
Get hash | malicious | Mirai | Browse | |||
Get hash | malicious | Gafgyt | Browse | |||
Get hash | malicious | Unknown | Browse | |||
Get hash | malicious | Mirai | Browse |
Match | Associated Sample Name / URL | SHA 256 | Detection | Threat Name | Link | Context |
---|---|---|---|---|---|---|
daisy.ubuntu.com | Get hash | malicious | Unknown | Browse |
| |
Get hash | malicious | Unknown | Browse |
| ||
Get hash | malicious | Mirai | Browse |
| ||
Get hash | malicious | Mirai | Browse |
| ||
Get hash | malicious | Mirai | Browse |
| ||
Get hash | malicious | Mirai | Browse |
| ||
Get hash | malicious | Mirai | Browse |
| ||
Get hash | malicious | Mirai | Browse |
| ||
Get hash | malicious | Mirai | Browse |
| ||
Get hash | malicious | Mirai | Browse |
|
Match | Associated Sample Name / URL | SHA 256 | Detection | Threat Name | Link | Context |
---|---|---|---|---|---|---|
CANONICAL-ASGB | Get hash | malicious | Unknown | Browse |
| |
Get hash | malicious | Unknown | Browse |
| ||
Get hash | malicious | Unknown | Browse |
| ||
Get hash | malicious | Mirai | Browse |
| ||
Get hash | malicious | Mirai | Browse |
| ||
Get hash | malicious | Unknown | Browse |
| ||
Get hash | malicious | Mirai | Browse |
| ||
Get hash | malicious | Mirai | Browse |
| ||
Get hash | malicious | Mirai | Browse |
| ||
Get hash | malicious | Mirai | Browse |
|
⊘No context
⊘No context
⊘No created / dropped files found
File type: | |
Entropy (8bit): | 7.931966939075441 |
TrID: |
|
File name: | B7cl2k3l7y.elf |
File size: | 26'184 bytes |
MD5: | 5983859e0217f7efb38dd215bf326be2 |
SHA1: | 2a9d56694c1ba4964f1c09045cd477386047845c |
SHA256: | 5e92122c2de27eadf25c4d6e53ed203eed6846099db1cd46b5aaa141cd6af498 |
SHA512: | e14d966486221b267aaa80a7032f01cdbe44f6ea67ea83a33e911653ca7bbf457319404ae6525f90b699f36d72aa7eb6659b2496ed56097765ef89a9cfb16547 |
SSDEEP: | 384:FMrRazJ0569cyRyf5hZE9V0RG6ugvIW1UEPvg+u+ISbJz/w6mdGU5ElG+r:gaGg9Yf7ZE9Z6Jvd3PvgHkZw63UqGI |
TLSH: | F1C2E0322B045522D4D01C7FEBFD918A3A8B48FDDD89B6057A18025CFAD11ED357DA27 |
File Content Preview: | .ELF...a..........(.........4...........4. ...(......................d...d..........................................Q.td............................K..gUPX!........<...<.......q..........?.E.h;.}...^........#].@....%...|..|..Ng!G..........d@...?..\D.... . |
ELF header | |
---|---|
Class: | |
Data: | |
Version: | |
Machine: | |
Version Number: | |
Type: | |
OS/ABI: | |
ABI Version: | 0 |
Entry Point Address: | |
Flags: | |
ELF Header Size: | 52 |
Program Header Offset: | 52 |
Program Header Size: | 32 |
Number of Program Headers: | 3 |
Section Header Offset: | 0 |
Section Header Size: | 40 |
Number of Section Headers: | 0 |
Header String Table Index: | 0 |
Type | Offset | Virtual Address | Physical Address | File Size | Memory Size | Entropy | Flags | Flags Description | Align | Prog Interpreter | Section Mappings |
---|---|---|---|---|---|---|---|---|---|---|---|
LOAD | 0x0 | 0x8000 | 0x8000 | 0x64d4 | 0x64d4 | 7.9351 | 0x5 | R E | 0x8000 | ||
LOAD | 0x0 | 0x10000 | 0x10000 | 0x0 | 0xde14 | 0.0000 | 0x6 | RW | 0x8000 | ||
GNU_STACK | 0x0 | 0x0 | 0x0 | 0x0 | 0x0 | 0.0000 | 0x7 | RWE | 0x4 |
Timestamp | Source Port | Dest Port | Source IP | Dest IP |
---|---|---|---|---|
Apr 16, 2024 14:00:30.745269060 CEST | 46540 | 443 | 192.168.2.14 | 185.125.190.26 |
Apr 16, 2024 14:01:01.207998037 CEST | 46540 | 443 | 192.168.2.14 | 185.125.190.26 |
Timestamp | Source Port | Dest Port | Source IP | Dest IP |
---|---|---|---|---|
Apr 16, 2024 14:00:24.079809904 CEST | 45083 | 53 | 192.168.2.14 | 8.8.8.8 |
Apr 16, 2024 14:00:24.079978943 CEST | 37421 | 53 | 192.168.2.14 | 8.8.8.8 |
Apr 16, 2024 14:00:24.184443951 CEST | 53 | 45083 | 8.8.8.8 | 192.168.2.14 |
Apr 16, 2024 14:00:24.184735060 CEST | 53 | 37421 | 8.8.8.8 | 192.168.2.14 |
Timestamp | Source IP | Dest IP | Trans ID | OP Code | Name | Type | Class | DNS over HTTPS |
---|---|---|---|---|---|---|---|---|
Apr 16, 2024 14:00:24.079809904 CEST | 192.168.2.14 | 8.8.8.8 | 0x6199 | Standard query (0) | A (IP address) | IN (0x0001) | false | |
Apr 16, 2024 14:00:24.079978943 CEST | 192.168.2.14 | 8.8.8.8 | 0x37c9 | Standard query (0) | 28 | IN (0x0001) | false |
Timestamp | Source IP | Dest IP | Trans ID | Reply Code | Name | CName | Address | Type | Class | DNS over HTTPS |
---|---|---|---|---|---|---|---|---|---|---|
Apr 16, 2024 14:00:24.184443951 CEST | 8.8.8.8 | 192.168.2.14 | 0x6199 | No error (0) | 162.213.35.25 | A (IP address) | IN (0x0001) | false | ||
Apr 16, 2024 14:00:24.184443951 CEST | 8.8.8.8 | 192.168.2.14 | 0x6199 | No error (0) | 162.213.35.24 | A (IP address) | IN (0x0001) | false |
System Behavior
Start time (UTC): | 12:00:14 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/dash |
Arguments: | - |
File size: | 129816 bytes |
MD5 hash: | 1e6b1c887c59a315edb7eb9a315fc84c |
Start time (UTC): | 12:00:14 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/rm |
Arguments: | rm -f /tmp/tmp.CCZ0GZYFXn /tmp/tmp.uAOKcDQXwM /tmp/tmp.ZsJD7a92tz |
File size: | 72056 bytes |
MD5 hash: | aa2b5496fdbfd88e38791ab81f90b95b |
Start time (UTC): | 12:00:14 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/dash |
Arguments: | - |
File size: | 129816 bytes |
MD5 hash: | 1e6b1c887c59a315edb7eb9a315fc84c |
Start time (UTC): | 12:00:14 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/cat |
Arguments: | cat /tmp/tmp.CCZ0GZYFXn |
File size: | 43416 bytes |
MD5 hash: | 7e9d213e404ad3bb82e4ebb2e1f2c1b3 |
Start time (UTC): | 12:00:14 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/dash |
Arguments: | - |
File size: | 129816 bytes |
MD5 hash: | 1e6b1c887c59a315edb7eb9a315fc84c |
Start time (UTC): | 12:00:14 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/head |
Arguments: | head -n 10 |
File size: | 47480 bytes |
MD5 hash: | fd96a67145172477dd57131396fc9608 |
Start time (UTC): | 12:00:14 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/dash |
Arguments: | - |
File size: | 129816 bytes |
MD5 hash: | 1e6b1c887c59a315edb7eb9a315fc84c |
Start time (UTC): | 12:00:14 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/tr |
Arguments: | tr -d \\000-\\011\\013\\014\\016-\\037 |
File size: | 51544 bytes |
MD5 hash: | fbd1402dd9f72d8ebfff00ce7c3a7bb5 |
Start time (UTC): | 12:00:14 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/dash |
Arguments: | - |
File size: | 129816 bytes |
MD5 hash: | 1e6b1c887c59a315edb7eb9a315fc84c |
Start time (UTC): | 12:00:14 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/cut |
Arguments: | cut -c -80 |
File size: | 47480 bytes |
MD5 hash: | d8ed0ea8f22c0de0f8692d4d9f1759d3 |
Start time (UTC): | 12:00:15 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/dash |
Arguments: | - |
File size: | 129816 bytes |
MD5 hash: | 1e6b1c887c59a315edb7eb9a315fc84c |
Start time (UTC): | 12:00:15 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/cat |
Arguments: | cat /tmp/tmp.CCZ0GZYFXn |
File size: | 43416 bytes |
MD5 hash: | 7e9d213e404ad3bb82e4ebb2e1f2c1b3 |
Start time (UTC): | 12:00:15 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/dash |
Arguments: | - |
File size: | 129816 bytes |
MD5 hash: | 1e6b1c887c59a315edb7eb9a315fc84c |
Start time (UTC): | 12:00:15 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/head |
Arguments: | head -n 10 |
File size: | 47480 bytes |
MD5 hash: | fd96a67145172477dd57131396fc9608 |
Start time (UTC): | 12:00:15 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/dash |
Arguments: | - |
File size: | 129816 bytes |
MD5 hash: | 1e6b1c887c59a315edb7eb9a315fc84c |
Start time (UTC): | 12:00:15 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/tr |
Arguments: | tr -d \\000-\\011\\013\\014\\016-\\037 |
File size: | 51544 bytes |
MD5 hash: | fbd1402dd9f72d8ebfff00ce7c3a7bb5 |
Start time (UTC): | 12:00:15 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/dash |
Arguments: | - |
File size: | 129816 bytes |
MD5 hash: | 1e6b1c887c59a315edb7eb9a315fc84c |
Start time (UTC): | 12:00:15 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/cut |
Arguments: | cut -c -80 |
File size: | 47480 bytes |
MD5 hash: | d8ed0ea8f22c0de0f8692d4d9f1759d3 |
Start time (UTC): | 12:00:15 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/dash |
Arguments: | - |
File size: | 129816 bytes |
MD5 hash: | 1e6b1c887c59a315edb7eb9a315fc84c |
Start time (UTC): | 12:00:15 |
Start date (UTC): | 16/04/2024 |
Path: | /usr/bin/rm |
Arguments: | rm -f /tmp/tmp.CCZ0GZYFXn /tmp/tmp.uAOKcDQXwM /tmp/tmp.ZsJD7a92tz |
File size: | 72056 bytes |
MD5 hash: | aa2b5496fdbfd88e38791ab81f90b95b |
Start time (UTC): | 12:00:21 |
Start date (UTC): | 16/04/2024 |
Path: | /tmp/B7cl2k3l7y.elf |
Arguments: | /tmp/B7cl2k3l7y.elf |
File size: | 4956856 bytes |
MD5 hash: | 5ebfcae4fe2471fcc5695c2394773ff1 |