MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e20b8e1d8337cec11d40db7580f42460abbc2b60ce0938bf2c746a32e0747421. 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



CoinMiner


Vendor detections: 6


Intelligence 6 IOCs YARA File information Comments 1

SHA256 hash: e20b8e1d8337cec11d40db7580f42460abbc2b60ce0938bf2c746a32e0747421
SHA3-384 hash: fd2094452211e44921407ff54c6eedfc3401d04c05ce7b198d34d77a25f4a2aab3c58cc7c794300abdb29d6d59fcb4b2
SHA1 hash: cc88d65077d3d3128d94aaa0dead1d6a759dac5a
MD5 hash: 38260596704d742a36fd21642a89fd2c
humanhash: september-seventeen-burger-september
File name:dota3_82.156.212.174.tar.gz
Download: download sample
Signature CoinMiner
File size:311'296 bytes
First seen:2026-05-29 09:40:38 UTC
Last seen:Never
File type: gz
MIME type:application/gzip
ssdeep 6144:1kR7o/wGrxvjYAJ0VDfxG4iLFsHJ5AZ7noTOB6TN3GNa84QECWuoH2/dDWKJP:yR7o/CAJwZGBQ5CqOBHaZBw5VDr
TLSH T1DB64231E8DF92FE617F9B124B34E55A2599214E066144BCB36A3CFB3F46D0EB8391870
Magika gzip
Reporter nullblue67
Tags:CoinMiner dota3 mdrfckr Outlaw ssh-bruteforce XMRIG

Intelligence


File Origin
# of uploads :
1
# of downloads :
69
Origin country :
ES ES
File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:e20b8e1d8337cec11d40db7580f42460abbc2b60ce0938bf2c746a32e0747421~
File size:413'388 bytes
SHA256 hash: cc735b6eca8b5fc298870dec6187ab560405f21fadbaf2c914050ff211b659e6
MD5 hash: 6c8e372b26c979e5ee3fd93cb6fda216
MIME type:application/x-tar
Signature CoinMiner
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
96.5%
Tags:
malware
Verdict:
Malicious
File Type:
gz
First seen:
2026-05-29T06:55:00Z UTC
Last seen:
2026-05-30T23:15:00Z UTC
Hits:
~10
Detections:
HEUR:Trojan.Shell.Miner.gen HEUR:Trojan.Shell.Agent.dh HEUR:Trojan.Shell.Agent.df HEUR:Trojan.Shell.Agent.ck HEUR:Trojan-Dropper.Shell.Agent.c not-a-virus:HEUR:RiskTool.Shell.MinerDownloader.f
Gathering data
Threat name:
Linux.Trojan.Malgent
Status:
Malicious
First seen:
2026-05-29 09:41:26 UTC
File Type:
Binary (Archive)
Extracted files:
10
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Result
Malware family:
xmrig_linux
Score:
  10/10
Tags:
family:xmrig_linux antivm defense_evasion discovery linux miner persistence rootkit upx
Behaviour
Enumerates kernel/hardware configuration
Reads runtime system information
Writes file to tmp directory
Checks CPU configuration
Reads CPU attributes
Attempts to change immutable files
Enumerates running processes
Write file to user bin folder
File and Directory Permissions Modification
Executes dropped EXE
Loads a kernel module
Family: xmrig
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Comments



Avatar
commented on 2026-05-29 09:47:09 UTC

Outlaw "dota3" variant — captured by NullBlue67 via Cowrie SSH honeypot on 2026-05-29 10:35 UTC.

Source IP: 82.156.212.174 (CN · Shenzhen Tencent) — VT 6+3/91
Credentials: admin:admin123
Persistence: mdrfckr SSH key (Outlaw group signature)
Password change attempt: admin → mtYqu9qFTtja

Second dota3 capture in 7 days. First was ef355778546bc6e044330691404b63eddf83d7fc6073047394a25dd0e98c7d7d (2026-05-22 from 102.210.149.105 ZA). Different tarball hash but identical Outlaw kill chain and internal .rsync/ structure.

Tarball structure (gzip + tar, .rsync/):
- a/ → crond (UPX-packed XMRig fork)
- b/ → run (Perl Stealth ShellBot v0.2a)
- c/ → kthreadadd32/64 (multi-arch helpers, mdrfckr key embedded in binary)

Defender markers:
- Filename pattern: dota3.tar.gz dropped to /var/tmp/
- Directory: .rsync/ (Outlaw signature, persists since v1)
- Marker file: /var/tmp/.systemcache436621
- Cron entries: ~/.configrc7/a/upd, b/sync, c/aptitude
- Process names: edac0 (shellbot disguise), kthreadadd, crond, tsm
- SSH key: ends with "mdrfckr"

Network IOCs (from prior dota3 binary analysis):
- XMR pool: 179.43.139.83:80 (active)
- IRC C2: 179.43.139.83:443 channel #001
- Failover siblings: 179.43.139.80/81/82/84 (commented in config)
- XMR wallet: 483fmPjXwX75xmkaJ3dm4vVGWZLHn3GDuKycHypVLr9SgiT6oaZgVh26iZRpwKEkTZCAmUS8tykuwUorM3zGtWxPBFqwuxS

Kill chain captured in Cowrie:
1. SSH brute admin:admin123
2. chattr -ia ~/.ssh + rm -rf .ssh + mkdir .ssh
3. echo "ssh-rsa AAAAB...mdrfckr" > authorized_keys
4. passwd admin → mtYqu9qFTtja
5. recon (cpuinfo, free, uname, lscpu, df, top, w)
6. rm -rf /var/tmp/dota* (upgrade prior install)
7. SFTP upload tarball
8. base64-decoded launcher (.X291-unix marker)

Operator regenerates tarball hash per drop while keeping internal binaries identical. Hash-based blocking unreliable; recommend YARA on .rsync/ structure + mdrfckr key + 179.43.139.0/24 outbound traffic.

Reported to ThreatFox + VirusTotal same day.

Defensive-only research — sample not executed.