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TROJ_INDUSTROYER.A

June 23, 2017
 Analysis by: Cris Nowell Pantanilla
 ALIASES:

Ransom:Win32/CrashOverride.A (Microsoft), a variant of Win32/Industroyer.A (ESET-NOD32)

 PLATFORM:

Windows

 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:

Dropped by other malware, Downloaded from the Internet

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:

76,800 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

13 Jun 2017

Payload:

Terminates processes

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.

Other Details

This Trojan does the following:

  • It enumerates all keys on the following registry and sets the value with an empty string. This prevents the services from running properly:
    • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
  • It enumerates all drives connected on the affected system and overwrites files with the following extensions:
    • .paf
    • .XRF
    • .trc
    • .SCL
    • .bak
    • .cid
    • .scd
    • .pcmp
    • .pcmi
    • .pcmt
    • .ini
    • .xml
    • .CIN
    • .prj
    • .cxm
    • .elb
    • .epl
    • .mdf
    • .ldf
    • .bkp
    • .log
    • .zip
    • .rar
    • .tar
    • .exe
    • .dll
  • It skips overwriting files on folders that contains "Windows" in name.
  • It terminates processes except the following:
    audiodg.exe
    conhost.exe
    csrss.exe
    dwm.exe
    explorer.exe
    lsass.exe
    lsm.exe
    services.exe
    shutdown.exe
    smss.exe
    spoolss.exe
    spoolsv.exe
    svchost.exe
    taskhost.exe
    wininit.exe
    winlogon.exe
    wuauclt.exe

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.468.04

FIRST VSAPI PATTERN DATE:

13 Jun 2017

VSAPI OPR PATTERN File:

13.469.00

VSAPI OPR PATTERN Date:

14 Jun 2017

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Scan your computer with your Trend Micro product to delete files detected as TROJ_INDUSTROYER.A. 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 this Knowledge Base page for more information.

NOTES:

Restore modified files and registries using backup or reinstallation.


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