Author: Henry Alarcon Jr.   
 Modified By:: Jay Bradley Nebre

 PLATFORM:

Linux

 OVER ALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE
Low
Medium
High
Critical

  • Threat Type:
    Coinminer

  • Destructiveness:
    No

  • Encrypted:
     

  • In the wild:
    Yes

  OVERVIEW

INFECTION CHANNEL: Downloaded from the Internet, Dropped by other malware

This Coinminer arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It uses the system's central processing unit (CPU) and/or graphical processing unit (GPU) resources to mine cryptocurrency.

  TECHNICAL DETAILS

File size: 1,945,000 bytes
File type: ELF
Memory resident: Yes
INITIAL SAMPLES RECEIVED DATE: 08 October 2019
PAYLOAD: Connects to URLs/IPs, Hogs resources

Arrival Details

This Coinminer arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other Details

This Coinminer does the following:

  • Accepts the following parameters:
    • -a, --algo=ALGO specify the algorithm to use
    • cryptonight
    • -o, --url=URL URL of mining server
    • -O, --userpass=U:P username:password pair for mining server
    • -u, --user=USERNAME username for mining server
    • -p, --pass=PASSWORD password for mining server
    • --rig-id=ID rig identifier for pool-side statistics (needs pool support)
    • -t, --threads=N number of miner threads
    • -v, --av=N algorithm variation, 0 auto select
    • -k, --keepalive send keepalived packet for prevent timeout (needs pool support)
    • --nicehash enable nicehash.com support
    • --tls enable SSL/TLS support (needs pool support)
    • --tls-fingerprint=F pool TLS certificate fingerprint, if set enable strict certificate pinning
    • -r, --retries=N number of times to retry before switch to backup server (default: 5)
    • -R, --retry-pause=N time to pause between retries (default: 5)
    • --cpu-affinity set process affinity to CPU core(s), mask 0x3 for cores 0 and 1
    • --cpu-priority set process priority (0 idle, 2 normal to 5 highest)
    • --no-huge-pages disable huge pages support
    • --no-color disable colored output
    • --variant algorithm PoW variant
    • --donate-level=N donate level, default 5%% (5 minutes in 100 minutes)
    • --user-agent set custom user-agent string for pool
    • -B, --background run the miner in the background
    • -c, --config=FILE load a JSON-format configuration file
    • -l, --log-file=FILE log all output to a file
    • -S, --syslog use system log for output messages
    • --max-cpu-usage=N maximum CPU usage for automatic threads mode (default 75)
    • --safe safe adjust threads and av settings for current CPU
    • --asm=ASM ASM code for cn/2, possible values: auto, none, intel, ryzen, bulldozer.
    • --print-time=N print hashrate report every N seconds
    • --api-worker-id=ID custom worker-id for API
    • --api-id=ID custom instance ID for API
    • --http-enabled enable HTTP API
    • --http-host=HOST bind host for HTTP API (by default 127.0.0.1)
    • --http-port=N bind port for HTTP API
    • --http-access-token=T access token for HTTP API
    • --http-no-restricted enable full remote access to HTTP API (only if access token set)
    • --dry-run test configuration and exit
    • -h, --help display this help and exit
    • -V, --version output version information and exit
  • It uses the following default details on its coin mining routine if parameter is not specified:
    • URL: {BLOCKED}-package.center:80
    • User: {BLOCKED}LNayefqNad3tGpHKPzviQUYHF1mCapMhgRuiiA' JPYX4KyRCVg9veTmckPN7bDebx51LCuDQYyhFgVbUMhc4qY14CQ
    • Password: x

    • URL: {BLOCKED}.{BLOCKED}.148.125:80
    • User: {BLOCKED}LNayefqNad3tGpHKPzviQUYHF1mCapMhgRuiiA' JPYX4KyRCVg9veTmckPN7bDebx51LCuDQYyhFgVbUMhc4qY14CQ
    • Password: x

    • URL: {BLOCKED}.{BLOCKED}.148.129:80
    • User: {BLOCKED}LNayefqNad3tGpHKPzviQUYHF1mCapMhgRuiiA' JPYX4KyRCVg9veTmckPN7bDebx51LCuDQYyhFgVbUMhc4qY14CQ
    • Password: x

It uses the system's central processing unit (CPU) and/or graphical processing unit (GPU) resources to mine cryptocurrency. This behavior makes the system run abnormally slow.

  SOLUTION

Minimum scan engine: 9.850
First VSAPI Pattern File: 15.416.08
First VSAPI Pattern Release Date: 08 October 2019
VSAPI OPR PATTERN-VERSION: 15.417.00
VSAPI OPR PATTERN DATE: 09 October 2019

Scan your computer with your Trend Micro product to delete files detected as Coinminer.Linux.MALXMR.SMDSL64. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:


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