Worm.Win32.EMOTET.AA
Trojan.Win32.Wofith.zw (KASPERSKY); Trojan:Win32/Emotet.HK!wln [non_writable_container] (MICROSOFT)
Windows
Threat Type: Worm
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Worm 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
Arrival Details
This Worm 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 Worm drops the following files:
- {malware directory}\service.exe → detected as TrojanSpy.Win32.EMOTET.TIABOFHL
It drops and executes the following files:
- {malware directory}\worm.exe → attempts to bypass a wireless local area network (WLAN) and spread service.exe in connected devices
Autostart Technique
This Worm starts the following services:
- {malware directory}\service.exe → this file is started as a service in infected devices
Backdoor Routine
This Worm posts the following information to its command and control (C&C) server:
- c={wireless network}:{password} → Passwords that successfully established a connection to a network
Other Details
This Worm does the following:
- Lists all WLAN interfaces enabled in the infected machine
- Lists all available network in WLAN interface
- Uses the following format for gathered information
- SSID: %s
- SIGNAL:%d
- SECURITY:{OPEN | WEP | WPA | WPA2 | UNKNOWN}
- encryption: {WEP104 | UNKNWOWN | CCMP |TKIP | WEP40 | NONE}
- NOTE:{Current Connecting | WLAN_AVAILABLE_NETWORK_HAS_PROFILE | WLAN_AVAILABLE_NETWORK_CONSOLE_USER_PROFILE }
- Security algorithm used for network authentication can be any of the following
- OPEN
- WEP
- WPAPSK
- WPA2PSK
- UNKNOWN
- Encryption method can be any of the following
- AES
- WEP
- TKIP
- NOEN
- Uses data obtained to create Network profiles with this template:
%s %s ESS auto %s %s false passPhrase false %s
- It uses the following credentials to try to login to a wireless network
- 123
- password
- Password
- letmein
- 1234
- 12345
- 123456
- 1234567
- 12345678
- 123456789
- 1234567890
- qwerty
- love
- iloveyou
- princess
- pussy
- master
- monkey
- abc123
- 99999999
- 9999999
- 999999
- 99999
- 9999
- 999
- 99
- 9
- 88888888
- 8888888
- 888888
- 88888
- 8888
- 888
- 88
- 8
- 77777777
- 7777777
- 777777
- 77777
- 7777
- 777
- 77
- 7
- 66666666
- 6666666
- 666666
- 66666
- 6666
- 666
- 66
- 6
- 55555555
- 5555555
- 555555
- 55555
- 5555
- 555
- 55
- 5
- 44444444
- 4444444
- 444444
- 44444
- 4444
- 444
- 44
- 4
- 33333333
- 3333333
- 333333
- 33333
- 3333
- 333
- 33
- 3
- 22222222
- 2222222
- 222222
- 22222
- 2222
- 222
- 22
- 2
- 11111111
- 1111111
- 111111
- 11111
- 1111
- 111
- 11
- 1
- 00000000
- 0000000
- 00000
- 0000
- 000
- 00
- 0987654321
- 987654321
- 87654321
- 7654321
- 654321
- 54321
- 4321
- 321
- 21
- 12
- super
- secret
- server
- computer
- owner
- backup
- database
- lotus
- oracle
- business
- manager
- temporary
- ihavenopass
- nothing
- nopassword
- nopass
- Internet
- internet
- example
- sample
- love123
- boss123
- work123
- home123
- mypc123
- temp123
- test123
- qwe123
- pw123
- root123
- pass123
- pass12
- pass1
- admin123
- admin12
- admin1
- password123
- password12
- password1
- default
- foobar
- foofoo
- temptemp
- temp
- testtest
- test
- rootroot
- root
- fuck
- zzzzz
- zzzz
- zzz
- xxxxx
- xxxx
- xxx
- qqqqq
- qqqq
- qqq
- aaaaa
- aaaa
- aaa
- sql
- file
- web
- foo
- job
- home
- work
- intranet
- controller
- killer
- games
- private
- market
- coffee
- cookie
- forever
- freedom
- student
- account
- academia
- files
- windows
- monitor
- unknown
- anything
- letitbe
- domain
- access
- money
- campus
- explorer
- exchange
- customer
- cluster
- nobody
- codeword
- codename
- changeme
- desktop
- security
- secure
- public
- system
- shadow
- office
- supervisor
- superuser
- share
- adminadmin
- mypassword
- mypass
- pass
- Login
- login
- passwd
- zxcvbn
- zxcvb
- zxccxz
- zxcxz
- qazwsxedc
- qazwsx
- q1w2e3
- qweasdzxc
- asdfgh
- asdzxc
- asddsa
- asdsa
- qweasd
- qweewq
- qwewq
- nimda
- administrator
- Admin
- admin
- a1b2c3
- 1q2w3e
- 1234qwer
- 1234abcd
- 123asd
- 123qwe
- 123abc
- 123321
- 12321
- 123123
- James
- John
- Robert
- Michael
- William
- David
- Richard
- Charles
- Joseph
- Thomas
- Christopher
- Daniel
- Paul
- Mark
- Donald
- George
- Kenneth
- Steven
- Edward
- Brian
- Ronald
- Anthony
- Kevin
- Mary
- Patricia
- Linda
- Barbara
- Elizabeth
- Jennifer
- Maria
- Susan
- Margaret
- Dorothy
- Lisa
- Nancy
- Karen
- Betty
- Helen
- Sandra
- Donna
- Carol
- james
- john
- robert
- michael
- william
- david
- richard
- charles
- joseph
- thomas
- christopher
- daniel
- paul
- mark
- donald
- george
- kenneth
- steven
- edward
- brian
- ronald
- anthony
- kevin
- mary
- patricia
- linda
- barbara
- elizabeth
- jennifer
- maria
- susan
- margaret
- dorothy
- lisa
- nancy
- karen
- betty
- helen
- sandra
- donna
- carol
- baseball
- dragon
- football
- mustang
- superman
- 696969
- batman
- trustno1
- Credentials that successfully established connection are sent back to the C&C server
- Enumerates all network resources and all users connected to the resource and attempts to connect to the users
- Attempts to connect to the admin account of the network resource if the previous attempt failed
- After successful connection, the malware attempts to connect to C$\ share to have access to drive C of specified users and spread service.exe as my.exe
- It adds the dropped file as service with the following details
- Service name: Windows Defender System Service
- Display name: WinDefService
- Path: C:\\my.exe
- Start type: SERVICE_AUTO_START
Mobile Malware Routine
This Worm receives commands from the following C&C server(s):
- {BLOCKED}.{BLOCKED}.37.146:8080/230238982BSBYKDDH938473938HDUI33/index.php
SOLUTION
Step 1
Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:
-
Troj.Win32.TRX.XXPE50FFF033
Step 2
Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.
Step 3
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 4
Identify and terminate files detected as Worm.Win32.EMOTET.AA
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 5
Disable this malware service
- Windows Defender System Service
Step 6
Search and delete this file
- {malware directory}\worm.exe
- {malware directory}\service.exe
Step 7
Scan your computer with your Trend Micro product to delete files detected as Worm.Win32.EMOTET.AA. 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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