MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ec523cba48fe94a45da78c463e32f252fd095fec340a09d32aca0495599e961d. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Threat unknown


Vendor detections: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ec523cba48fe94a45da78c463e32f252fd095fec340a09d32aca0495599e961d
SHA3-384 hash: 4e62db15873e7e2d61c7e2cfa8765f5d3afe59da031c5f0fca7acf0450ee1e54902cd844c7056cd8ae0f206dc2da21b1
SHA1 hash: 6492ae84601166c0af24abc466b25be9fd6c8189
MD5 hash: 8cf3b404bbde86bcc83f64784e1ea56a
humanhash: sad-nineteen-oklahoma-eleven
File name:linux_386
Download: download sample
File size:1'610'836 bytes
First seen:2025-08-14 21:06:22 UTC
Last seen:2025-08-15 00:15:23 UTC
File type: elf
MIME type:application/x-executable
ssdeep 49152:sMI7W/fZozOBURlGMxDtrTg+7j+BUEC/31GV8mEOKwO:3I7W/R6OYlB8+7j7Em3cdKj
TLSH T16C7533F1E9D3500F82DC3B7D2579C314230A2B6EBEF776A66F055A225A0DA1B7878305
Magika elf
Reporter abuse_ch
Tags:elf UPX
File size (compressed) :1'610'836 bytes
File size (de-compressed) :5'251'072 bytes
Format:linux/i386
Unpacked file: 63cb4b4816bcfa472ca033a570740921f2958172cca5a7cdda1a9228a8fde8e9

Intelligence

File Origin
# of uploads :
3
# of downloads :
20
Origin country :
DE DE
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Linux.Kaiji.16.16988.11110.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sets a written file as executable
Mounts file systems
Changes the time when the file was created, accessed, or modified
Receives data from a server
Locks files
Launching a process
Creating a process from a recently created file
DNS request
Manages services
Creating a file
Sends data to a server
Connection attempt
Creates directories in a system directory
Writes files to system subdirectory
Creates or modifies files in /cron to set up autorun
Writes files to system directory
Replaces system binary files
Creates or modifies files in /init.d to set up autorun
Performs a bruteforce attack in the network
Creates or modifies files to set up autorun
Verdict:
Unknown
Threat level:
  0/10
Confidence:
100%
Tags:
packed upx
Link:
https://www.filescan.io/uploads/689e500dd03953fd749d0012/reports/84019b9a-beb5-469e-8766-cbed11d8bc31/overview
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/3739cd9e-582c-48a6-998a-28a22f1d3b5d
Result
Threat name:
n/a
Detection:
malicious
Classification:
spre.troj.evad
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1757468
Signature
Drops files in suspicious directories
Multi AV Scanner detection for submitted file
Sample is packed with UPX
Sample tries to persist itself using /etc/profile
Sample tries to persist itself using cron
Sample tries to set files in /etc globally writable
Uses known network protocols on non-standard ports
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1757468 Sample: linux_386.elf Startdate: 14/08/2025 Architecture: LINUX Score: 72 120 154.201.82.47, 37998, 38002, 60516 PEGTECHINCUS Seychelles 2->120 122 www.google.com 2->122 124 Multi AV Scanner detection for submitted file 2->124 126 Uses known network protocols on non-standard ports 2->126 128 Sample is packed with UPX 2->128 12 linux_386.elf 2->12         started        16 systemd System.img.config 2->16         started        18 systemd cron 2->18         started        20 9 other processes 2->20 signatures3 process4 file5 118 /etc/32678, POSIX 12->118 dropped 138 Sample tries to set files in /etc globally writable 12->138 22 linux_386.elf linux_386.elf 12->22         started        26 linux_386.elf service systemctl 12->26         started        28 linux_386.elf bash 12->28         started        30 System.img.config sh 16->30         started        32 System.img.config service systemctl 16->32         started        38 2 other processes 16->38 34 cron 18->34         started        36 cron 20->36         started        40 2 other processes 20->40 signatures6 process7 file8 108 /etc/profile.d/bash_config.sh, a 22->108 dropped 110 /etc/init.d/ssh, POSIX 22->110 dropped 112 /etc/init.d/linux_kill, POSIX 22->112 dropped 114 /.img, a 22->114 dropped 130 Sample tries to set files in /etc globally writable 22->130 132 Sample tries to persist itself using /etc/profile 22->132 134 Drops files in suspicious directories 22->134 42 linux_386.elf bash 22->42         started        46 linux_386.elf service systemctl 22->46         started        56 6 other processes 22->56 58 4 other processes 26->58 48 bash 32678 28->48         started        50 sh 32678 30->50         started        60 4 other processes 32->60 52 cron sh 34->52         started        54 cron sh 36->54         started        signatures9 process10 file11 116 /etc/crontab, ASCII 42->116 dropped 136 Sample tries to persist itself using cron 42->136 72 4 other processes 46->72 62 32678 sleep 48->62         started        64 32678 id.services.conf 50->64         started        66 32678 sleep 50->66         started        68 sh 52->68         started        70 sh 54->70         started        74 8 other processes 56->74 76 2 other processes 58->76 78 2 other processes 60->78 signatures12 process13 process14 80 id.services.conf service systemctl 64->80         started        82 id.services.conf sh 64->82         started        84 id.services.conf pkill 64->84         started        86 id.services.conf id.services.conf 64->86         started        88 service systemctl 72->88         started        90 service sed 72->90         started        process15 92 service 80->92         started        94 service basename 80->94         started        96 service basename 80->96         started        98 service systemctl 80->98         started        100 sh 32678 82->100         started        process16 102 service systemctl 92->102         started        104 service sed 92->104         started        106 32678 sleep 100->106         started       
Score:
100%
Verdict:
Malware
File Type:
ELF
Link:
https://malprob.io/report/ec523cba48fe94a45da78c463e32f252fd095fec340a09d32aca0495599e961d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ec523cba48fe94a45da78c463e32f252fd095fec340a09d32aca0495599e961d/
Verdict:
Malicious
Threat:
HEUR:Trojan.Linux.Chaos
Link:
https://tip.neiki.dev/file/ec523cba48fe94a45da78c463e32f252fd095fec340a09d32aca0495599e961d
Threat name:
Linux.Trojan.Kaiji
Create hunting rule
Status:
Malicious
First seen:
2025-08-14 21:08:32 UTC
File Type:
ELF32 Little (Exe)
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=5rjdzosi72kkixnhrrdd4mxskl6qsx7mgqfatuzkzicjkwm6syoq._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
defense_evasion discovery execution linux persistence privilege_escalation ransomware rootkit upx
Link:
https://tria.ge/reports/250814-zyg3gazpt3/
Behaviour
GoLang User-Agent
Reads runtime system information
UPX packed file
Abuse Elevation Control Mechanism: Sudo and Sudo Caching
Creates/modifies Cron job
Executes dropped EXE
Loads a kernel module
Renames multiple (1040) files with added filename extension
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/6206a0b1-380b-4ce6-997a-800a21a1c186
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.70
Link:
https://yomi.yoroi.company/submissions/ec523cba48fe94a45da78c463e32f252fd095fec340a09d32aca0495599e961d

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:SUSP_ELF_LNX_UPX_Compressed_File
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a suspicious ELF binary with UPX compression
Reference:Internal Research
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:upx_packed_elf_v1
Create hunting rule
Author:RandomMalware

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

elf ec523cba48fe94a45da78c463e32f252fd095fec340a09d32aca0495599e961d

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3603499/
  
Delivery method
Distributed via web download

Comments