Trojan.SH.MALXMR.UWEIU

February 01, 2019
 Analysis by: Michael Jhon Ofiaza
 PLATFORM:

Linux

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

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

  TECHNICAL DETAILS

File Size:

8,682 bytes

File Type:

Other

Memory Resident:

No

Initial Samples Received Date:

31 Jan 2019

Payload:

Deletes files, Connects to URLs/IPs, Drops files

Arrival Details

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

Installation

This Trojan drops the following files:

  • /bin/sh /etc/cron.hourly/oanacroner -> contains the connection to http://{BLOCKED}h.shop/1.jpg
  • /bin/sh /etc/cron.daily/oanacroner -> contains the connection to http://{BLOCKED}h.shop/1.jpg
  • /bin/sh /etc/cron.monthly/oanacroner -> contains the connection to http://{BLOCKED}h.shop/1.jpg
  • /opt/yilu/mservice
  • /opt/yilu/work/xig/xig
  • /opt/yilu/work/xige/xige
  • /tmp/thisxxs
  • /usr/bin/.sshd
  • /usr/bin/bsd-port/getty

It creates the following folders:

  • /opt/yilu/work/xig /opt/yilu/work/xige /usr/bin/bsd-port
  • /var/tmp
  • /var/spool/cron/crontabs
  • /etc/cron.hourly
  • /etc/cron.daily
  • /etc/cron.monthly
  • /opt/yilu/work/xig
  • /opt/yilu/work/xige
  • /usr/bin/bsd-port

Other System Modifications

This Trojan deletes the following files:

  • /tmp/qW3xT.2
  • /tmp/ddgs.3013
  • /tmp/ddgs.3012
  • /tmp/wnTKYg
  • /tmp/2t3ik
  • /boot/grub/deamon
  • /boot/grub/disk_genius
  • /tmp/*index_bak*
  • /tmp/*httpd.conf*
  • /tmp/*httpd.conf
  • /tmp/a7b104c270
  • /tmp/ddg*
  • /tmp/wnTKYg
  • /var/tmp/j*
  • /tmp/j*
  • /var/tmp/java
  • /tmp/java
  • /var/tmp/java2
  • /tmp/java2
  • /var/tmp/java*
  • /tmp/java*
  • /tmp/httpd.conf
  • /tmp/conn
  • /tmp/.uninstall*
  • /tmp/.python*
  • /tmp/.tables*
  • /tmp/.mas
  • /tmp/root.sh
  • /tmp/pools.txt
  • /tmp/libapache
  • /tmp/config.json
  • /tmp/bashf
  • /tmp/bashg
  • /tmp/libapache
  • /tmp/kworkerds
  • /var/tmp/kworkerds
  • /var/tmp/config.json
  • /tmp/.systemd-private-* .systemd-private-*
  • /etc/rc*.d/S01nfstruncate
  • /etc/rc.d/rc*.d/S01nfstruncate
  • /bin/ddus-uidgen
  • /etc/init.d/acpidtd
  • /etc/rc.d/rc*.d/S01acpidtd
  • /etc/rc*.d/S01acpidtd
  • /etc/ld.sc.conf
  • /etc/ld.so.preload

Process Termination

This Trojan terminates the following processes if found running in the affected system's memory:

  • sourplum
  • wnTKYg
  • ddg*
  • kworkerds
  • biosetjenkins
  • AnXqV.yam
  • xmrigDaemon
  • xmrigMiner
  • xmrig
  • Loopback
  • apaceha
  • cryptonight
  • stratum
  • mixnerdx
  • performedl
  • JnKihGjn
  • irqba2anc1
  • irqba5xnc1
  • irqbnc1
  • ir29xc1
  • conns
  • irqbalance
  • crypto-pool
  • minexmr
  • XJnRj
  • NXLAi
  • BI5zj
  • askdljlqw
  • minerd
  • minergate
  • Guard.sh
  • ysaydh
  • bonns
  • donns
  • kxjd
  • Duck.sh
  • bonn.sh
  • conn.sh
  • kworker34
  • kw.sh
  • pro.sh
  • polkitd
  • acpid
  • icb5o
  • nopxi
  • irqbalanc1
  • minerd
  • i586
  • gddr
  • mstxmr
  • ddg.2011
  • wnTKYg
  • deamon
  • disk_genius
  • sourplum
  • bashx
  • bashg
  • bashe
  • bashf
  • bashh
  • XbashY
  • libapache
  • qW3xT.2
  • /usr/bin/.sshd
  • sustes
  • Xbash
  • kthreadd
  • xmrig
  • xmrigDaemon
  • xmrigMiner
  • xig
  • ddgs
  • qW3xT
  • t00ls.ru
  • /var/tmp/sustes
  • sustes
  • Xbash
  • hashfish
  • cranbery
  • stratum
  • xmr
  • minerd
  • /tmp/thisxxs
  • /opt/yilu/work/xig/xig
  • /opt/yilu/mservice
  • /usr/bin/.sshd
  • /usr/bin/bsd-port/getty
  • Process that uses the following URL and Ports:
    • {BLOCKED}.{BLOCKED}.{BLOCKED}.86:443
    • {BLOCKED}.{BLOCKED}.{BLOCKED}.238
    • {BLOCKED}.{BLOCKED}.{BLOCKED}2.87
    • :3333
    • :4444
    • :5555
    • :6666
    • :7777
    • :3347
    • :14444
    • :14433
    • :56415

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

  • http://{BLOCKED}h.shop/86
  • http://{BLOCKED}h.shop/64
  • http://{BLOCKED}h.shop/0
  • http://{BLOCKED}h.shop/1.jpg

It saves the files it downloads using the following names:

Other Details

This Trojan does the following:

  • Terminates itself if found running and then execute the updated miner

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

14.786.04

FIRST VSAPI PATTERN DATE:

01 Feb 2019

VSAPI OPR PATTERN File:

14.787.00

VSAPI OPR PATTERN Date:

02 Feb 2019

Scan your computer with your Trend Micro product to delete files detected as Trojan.SH.MALXMR.UWEIU. 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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