Linux
Analysis Report
Nyx4r.arm5.elf
Overview
General Information
Sample name: | Nyx4r.arm5.elf |
Analysis ID: | 1644241 |
MD5: | b30829bfc63b8ba3233ce7e2f245e92e |
SHA1: | e6830c8fb0f8d7776332db39359cf712af33fe49 |
SHA256: | 30540730152bea3d2aa46670528ce8f842b33e403cfbc557a21d880a1fb757c0 |
Tags: | elfuser-abuse_ch |
Infos: |
Detection
Okiru
Score: | 64 |
Range: | 0 - 100 |
Signatures
Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Yara detected Okiru
Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable
Sample has stripped symbol table
Uses the "uname" system call to query kernel version information (possible evasion)
Classification
Joe Sandbox version: | 42.0.0 Malachite |
Analysis ID: | 1644241 |
Start date and time: | 2025-03-20 13:31:56 +01:00 |
Joe Sandbox product: | CloudBasic |
Overall analysis duration: | 0h 10m 24s |
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: | Nyx4r.arm5.elf |
Detection: | MAL |
Classification: | mal64.troj.linELF@0/0@2/0 |
Cookbook Comments: |
|
Command: | /tmp/Nyx4r.arm5.elf |
PID: | 5443 |
Exit Code: | 255 |
Exit Code Info: | |
Killed: | False |
Standard Output: | |
Standard Error: | /lib/ld-uClibc.so.0: No such file or directory |
- system is lnxubuntu20
- cleanup
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Okiru | Yara detected Okiru | Joe Security |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Okiru | Yara detected Okiru | Joe Security | ||
JoeSecurity_Okiru | Yara detected Okiru | Joe Security |
⊘No Suricata rule has matched
- • AV Detection
- • Networking
- • System Summary
- • Malware Analysis System Evasion
- • Stealing of Sensitive Information
- • Remote Access Functionality
Click to jump to signature section
Show All Signature Results
AV Detection |
---|
Source: | Avira: |
Source: | Virustotal: | Perma Link | ||
Source: | ReversingLabs: |
Source: | UDP traffic detected without corresponding DNS query: | ||
Source: | UDP traffic detected without corresponding DNS query: |
Source: | DNS traffic detected: |
Source: | String containing 'busybox' found: | ||
Source: | String containing 'busybox' found: |
Source: | .symtab present: |
Source: | Classification label: |
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: | ||
Source: | Binary or memory string: | ||
Source: | Binary or memory string: | ||
Source: | Binary or memory string: |
Stealing of Sensitive Information |
---|
Source: | File source: | ||
Source: | File source: | ||
Source: | File source: |
Remote Access Functionality |
---|
Source: | File source: | ||
Source: | File source: | ||
Source: | File source: |
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 | Direct Volume Access | OS Credential Dumping | 11 Security Software Discovery | Remote Services | Data from Local System | 1 Non-Application Layer Protocol | 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 | Rootkit | LSASS Memory | Application Window Discovery | Remote Desktop Protocol | Data from Removable Media | 1 Application Layer Protocol | Exfiltration Over Bluetooth | Network Denial of Service |
⊘No configs have been found
Source | Detection | Scanner | Label | Link |
---|---|---|---|---|
56% | Virustotal | Browse | ||
61% | ReversingLabs | Linux.Trojan.Mirai | ||
100% | Avira | EXP/ELF.Mirai.Bootnet.oc |
⊘No Antivirus matches
⊘No Antivirus matches
⊘No Antivirus matches
Name | IP | Active | Malicious | Antivirus Detection | Reputation |
---|---|---|---|---|---|
daisy.ubuntu.com | 162.213.35.24 | true | false | high |
⊘No contacted IP infos
⊘No context
Match | Associated Sample Name / URL | SHA 256 | Detection | Threat Name | Link | Context |
---|---|---|---|---|---|---|
daisy.ubuntu.com | Get hash | malicious | Okiru | Browse |
| |
Get hash | malicious | Unknown | Browse |
| ||
Get hash | malicious | Unknown | Browse |
| ||
Get hash | malicious | Unknown | Browse |
| ||
Get hash | malicious | Unknown | Browse |
| ||
Get hash | malicious | Unknown | Browse |
| ||
Get hash | malicious | Unknown | Browse |
| ||
Get hash | malicious | Unknown | Browse |
| ||
Get hash | malicious | Unknown | Browse |
| ||
Get hash | malicious | Unknown | Browse |
|
⊘No context
⊘No context
⊘No context
⊘No created / dropped files found
File type: | |
Entropy (8bit): | 6.025681588086173 |
TrID: |
|
File name: | Nyx4r.arm5.elf |
File size: | 50'652 bytes |
MD5: | b30829bfc63b8ba3233ce7e2f245e92e |
SHA1: | e6830c8fb0f8d7776332db39359cf712af33fe49 |
SHA256: | 30540730152bea3d2aa46670528ce8f842b33e403cfbc557a21d880a1fb757c0 |
SHA512: | 25e406b7e4ec81022bc98e461510a71f249f395fd0185d990053341343cdcf72e5fd6863cdb2418d174b04909d2d48286848b343b0cd8ff88561b4bb1c723dd6 |
SSDEEP: | 768:u7RNKVYqe/cntRehkCPgwEc4nXhVJlrPQKJAhp9g0od8Qo1Pb27wCVy/rCxHghWf:63OnSyCPg9yKJ2G8Qo1jZaiol5bEF4 |
TLSH: | 5A33F9C27881BA29C3D16777EE5F018E3314A7D8D1DE3353C8281B947A8A95F0DA7B46 |
File Content Preview: | .ELF...a..........(.........4...........4. ...(.........4...4...4...................................................................,...,...............0...0...0...h...................D...D...D...................Q.td............................/lib/ld-uCl |
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: | 6 |
Section Header Offset: | 49932 |
Section Header Size: | 40 |
Number of Section Headers: | 18 |
Header String Table Index: | 17 |
Name | Type | Address | Offset | Size | EntSize | Flags | Flags Description | Link | Info | Align |
---|---|---|---|---|---|---|---|---|---|---|
NULL | 0x0 | 0x0 | 0x0 | 0x0 | 0x0 | 0 | 0 | 0 | ||
.interp | PROGBITS | 0x80f4 | 0xf4 | 0x14 | 0x0 | 0x2 | A | 0 | 0 | 1 |
.hash | HASH | 0x8108 | 0x108 | 0x22c | 0x4 | 0x2 | A | 3 | 0 | 4 |
.dynsym | DYNSYM | 0x8334 | 0x334 | 0x460 | 0x10 | 0x2 | A | 4 | 1 | 4 |
.dynstr | STRTAB | 0x8794 | 0x794 | 0x226 | 0x0 | 0x2 | A | 0 | 0 | 1 |
.rel.plt | REL | 0x89bc | 0x9bc | 0x1a0 | 0x8 | 0x2 | A | 3 | 7 | 4 |
.init | PROGBITS | 0x8b5c | 0xb5c | 0x18 | 0x0 | 0x6 | AX | 0 | 0 | 4 |
.plt | PROGBITS | 0x8b74 | 0xb74 | 0x284 | 0x4 | 0x6 | AX | 0 | 0 | 4 |
.text | PROGBITS | 0x8df8 | 0xdf8 | 0xaccc | 0x0 | 0x6 | AX | 0 | 0 | 4 |
.fini | PROGBITS | 0x13ac4 | 0xbac4 | 0x14 | 0x0 | 0x6 | AX | 0 | 0 | 4 |
.rodata | PROGBITS | 0x13ad8 | 0xbad8 | 0x554 | 0x0 | 0x2 | A | 0 | 0 | 4 |
.ctors | PROGBITS | 0x1c030 | 0xc030 | 0x8 | 0x0 | 0x3 | WA | 0 | 0 | 4 |
.dtors | PROGBITS | 0x1c038 | 0xc038 | 0x8 | 0x0 | 0x3 | WA | 0 | 0 | 4 |
.dynamic | DYNAMIC | 0x1c044 | 0xc044 | 0x98 | 0x8 | 0x3 | WA | 4 | 0 | 4 |
.got | PROGBITS | 0x1c0dc | 0xc0dc | 0xdc | 0x4 | 0x3 | WA | 0 | 0 | 4 |
.data | PROGBITS | 0x1c1b8 | 0xc1b8 | 0xe0 | 0x0 | 0x3 | WA | 0 | 0 | 4 |
.bss | NOBITS | 0x1c298 | 0xc298 | 0x19c | 0x0 | 0x3 | WA | 0 | 0 | 4 |
.shstrtab | STRTAB | 0x0 | 0xc298 | 0x73 | 0x0 | 0x0 | 0 | 0 | 1 |
Type | Offset | Virtual Address | Physical Address | File Size | Memory Size | Entropy | Flags | Flags Description | Align | Prog Interpreter | Section Mappings |
---|---|---|---|---|---|---|---|---|---|---|---|
PHDR | 0x34 | 0x8034 | 0x8034 | 0xc0 | 0xc0 | 2.2172 | 0x5 | R E | 0x4 | ||
INTERP | 0xf4 | 0x80f4 | 0x80f4 | 0x14 | 0x14 | 3.6842 | 0x4 | R | 0x1 | /lib/ld-uClibc.so.0 | .interp |
LOAD | 0x0 | 0x8000 | 0x8000 | 0xc02c | 0xc02c | 6.0606 | 0x5 | R E | 0x8000 | .interp .hash .dynsym .dynstr .rel.plt .init .plt .text .fini .rodata | |
LOAD | 0xc030 | 0x1c030 | 0x1c030 | 0x268 | 0x404 | 3.1339 | 0x6 | RW | 0x8000 | .ctors .dtors .dynamic .got .data .bss | |
DYNAMIC | 0xc044 | 0x1c044 | 0x1c044 | 0x98 | 0x98 | 1.9247 | 0x6 | RW | 0x4 | .dynamic | |
GNU_STACK | 0x0 | 0x0 | 0x0 | 0x0 | 0x0 | 0.0000 | 0x7 | RWE | 0x4 |
Type | Meta | Value | Tag |
---|---|---|---|
DT_NEEDED | sharedlib | libc.so.0 | 0x1 |
DT_INIT | value | 0x8b5c | 0xc |
DT_FINI | value | 0x13ac4 | 0xd |
DT_HASH | value | 0x8108 | 0x4 |
DT_STRTAB | value | 0x8794 | 0x5 |
DT_SYMTAB | value | 0x8334 | 0x6 |
DT_STRSZ | bytes | 550 | 0xa |
DT_SYMENT | bytes | 16 | 0xb |
DT_DEBUG | value | 0x0 | 0x15 |
DT_PLTGOT | value | 0x1c0dc | 0x3 |
DT_PLTRELSZ | bytes | 416 | 0x2 |
DT_PLTREL | pltrel | DT_REL | 0x14 |
DT_JMPREL | value | 0x89bc | 0x17 |
DT_NULL | value | 0x0 | 0x0 |
Name | Version Info Name | Version Info File Name | Section Name | Value | Size | Symbol Type | Symbol Bind | Symbol Visibility | Ndx |
---|---|---|---|---|---|---|---|---|---|
.dynsym | 0x0 | 0 | NOTYPE | <unknown> | DEFAULT | SHN_UNDEF | |||
__aeabi_idiv0 | .dynsym | 0x13a84 | 4 | FUNC | <unknown> | DEFAULT | 8 | ||
__aeabi_ldiv0 | .dynsym | 0x13a84 | 4 | FUNC | <unknown> | DEFAULT | 8 | ||
__aeabi_uidiv | .dynsym | 0x137c4 | 0 | FUNC | <unknown> | DEFAULT | 8 | ||
__aeabi_uidivmod | .dynsym | 0x138bc | 24 | FUNC | <unknown> | DEFAULT | 8 | ||
__bss_end__ | .dynsym | 0x1c434 | 0 | NOTYPE | <unknown> | DEFAULT | SHN_ABS | ||
__bss_start | .dynsym | 0x1c298 | 0 | NOTYPE | <unknown> | DEFAULT | SHN_ABS | ||
__bss_start__ | .dynsym | 0x1c298 | 0 | NOTYPE | <unknown> | DEFAULT | SHN_ABS | ||
__data_start | .dynsym | 0x1c1b8 | 0 | NOTYPE | <unknown> | DEFAULT | 17 | ||
__div0 | .dynsym | 0x13a84 | 4 | FUNC | <unknown> | DEFAULT | 8 | ||
__end__ | .dynsym | 0x1c434 | 0 | NOTYPE | <unknown> | DEFAULT | SHN_ABS | ||
__errno_location | .dynsym | 0x8d68 | 32 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
__modsi3 | .dynsym | 0x139a0 | 228 | FUNC | <unknown> | DEFAULT | 8 | ||
__uClibc_main | .dynsym | 0x8d14 | 488 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
__udivsi3 | .dynsym | 0x137c4 | 248 | FUNC | <unknown> | DEFAULT | 8 | ||
__umodsi3 | .dynsym | 0x138d4 | 204 | FUNC | <unknown> | DEFAULT | 8 | ||
_bss_end__ | .dynsym | 0x1c434 | 0 | NOTYPE | <unknown> | DEFAULT | SHN_ABS | ||
_edata | .dynsym | 0x1c298 | 0 | NOTYPE | <unknown> | DEFAULT | SHN_ABS | ||
_end | .dynsym | 0x1c434 | 0 | NOTYPE | <unknown> | DEFAULT | SHN_ABS | ||
_start | .dynsym | 0x8ed8 | 80 | FUNC | <unknown> | DEFAULT | 8 | ||
abort | .dynsym | 0x8c60 | 352 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
atoi | .dynsym | 0x8d80 | 12 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
bind | .dynsym | 0x8c9c | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
calloc | .dynsym | 0x8c6c | 88 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
clock | .dynsym | 0x8da4 | 52 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
close | .dynsym | 0x8dd4 | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
closedir | .dynsym | 0x8dbc | 196 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
connect | .dynsym | 0x8bb8 | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
exit | .dynsym | 0x8d74 | 172 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
fcntl | .dynsym | 0x8dc8 | 116 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
fork | .dynsym | 0x8d08 | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
free | .dynsym | 0x8de0 | 288 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
getpid | .dynsym | 0x8bdc | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
getppid | .dynsym | 0x8d2c | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
getsockname | .dynsym | 0x8dec | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
getsockopt | .dynsym | 0x8d5c | 48 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
inet_addr | .dynsym | 0x8ca8 | 36 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
ioctl | .dynsym | 0x8b94 | 80 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
kill | .dynsym | 0x8c84 | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
listen | .dynsym | 0x8cfc | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
malloc | .dynsym | 0x8c0c | 400 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
memcpy | .dynsym | 0x8bf4 | 4 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
memmove | .dynsym | 0x8bc4 | 4 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
memset | .dynsym | 0x8d20 | 156 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
open | .dynsym | 0x8d98 | 92 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
opendir | .dynsym | 0x8d44 | 264 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
prctl | .dynsym | 0x8be8 | 48 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
printf | .dynsym | 0x8ba0 | 76 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
read | .dynsym | 0x8ccc | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
readdir | .dynsym | 0x8c48 | 224 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
readlink | .dynsym | 0x8c00 | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
realloc | .dynsym | 0x8cf0 | 312 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
recv | .dynsym | 0x8bac | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
recvfrom | .dynsym | 0x8c24 | 52 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
select | .dynsym | 0x8c3c | 48 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
send | .dynsym | 0x8c54 | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
sendto | .dynsym | 0x8ce4 | 52 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
setsid | .dynsym | 0x8db0 | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
setsockopt | .dynsym | 0x8cb4 | 48 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
sleep | .dynsym | 0x8c18 | 420 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
socket | .dynsym | 0x8c30 | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
strcat | .dynsym | 0x8c90 | 40 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
strcmp | .dynsym | 0x8d50 | 28 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
strcpy | .dynsym | 0x8b88 | 28 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
strlen | .dynsym | 0x8d8c | 96 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
strstr | .dynsym | 0x8cc0 | 248 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
time | .dynsym | 0x8d38 | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
unlink | .dynsym | 0x8cd8 | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
usleep | .dynsym | 0x8bd0 | 76 | FUNC | <unknown> | DEFAULT | SHN_UNDEF | ||
write | .dynsym | 0x8c78 | 44 | FUNC | <unknown> | DEFAULT | SHN_UNDEF |
Download Network PCAP: filtered – full
Timestamp | Source Port | Dest Port | Source IP | Dest IP |
---|---|---|---|---|
Mar 20, 2025 13:35:27.777498960 CET | 56506 | 53 | 192.168.2.13 | 1.1.1.1 |
Mar 20, 2025 13:35:27.777551889 CET | 54737 | 53 | 192.168.2.13 | 1.1.1.1 |
Mar 20, 2025 13:35:27.876251936 CET | 53 | 54737 | 1.1.1.1 | 192.168.2.13 |
Mar 20, 2025 13:35:27.877083063 CET | 53 | 56506 | 1.1.1.1 | 192.168.2.13 |
Timestamp | Source IP | Dest IP | Trans ID | OP Code | Name | Type | Class | DNS over HTTPS |
---|---|---|---|---|---|---|---|---|
Mar 20, 2025 13:35:27.777498960 CET | 192.168.2.13 | 1.1.1.1 | 0x8161 | Standard query (0) | A (IP address) | IN (0x0001) | false | |
Mar 20, 2025 13:35:27.777551889 CET | 192.168.2.13 | 1.1.1.1 | 0x2950 | Standard query (0) | 28 | IN (0x0001) | false |
Timestamp | Source IP | Dest IP | Trans ID | Reply Code | Name | CName | Address | Type | Class | DNS over HTTPS |
---|---|---|---|---|---|---|---|---|---|---|
Mar 20, 2025 13:35:27.877083063 CET | 1.1.1.1 | 192.168.2.13 | 0x8161 | No error (0) | 162.213.35.24 | A (IP address) | IN (0x0001) | false | ||
Mar 20, 2025 13:35:27.877083063 CET | 1.1.1.1 | 192.168.2.13 | 0x8161 | No error (0) | 162.213.35.25 | A (IP address) | IN (0x0001) | false |
System Behavior
Start time (UTC): | 12:32:42 |
Start date (UTC): | 20/03/2025 |
Path: | /tmp/Nyx4r.arm5.elf |
Arguments: | /tmp/Nyx4r.arm5.elf |
File size: | 4956856 bytes |
MD5 hash: | 5ebfcae4fe2471fcc5695c2394773ff1 |