What is “Backdoor:PHP/OrbWS.WS!MTB”?

The Backdoor:PHP/OrbWS.WS!MTB is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

GridinSoft Anti-Malware

Gridinsoft Anti-Malware

Removing PC viruses manually may take hours and may damage your PC in the process. We recommend using GridinSoft Anti-Malware for virus removal. Allows to complete scan and cure your PC during the trial period.

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What Backdoor:PHP/OrbWS.WS!MTB virus can do?

Sample contains Overlay data
Reads data out of its own binary image
Authenticode signature is invalid

How to determine Backdoor:PHP/OrbWS.WS!MTB?


File Info:
name: C49C37BBEC29E3476DE2.mlw
path: /opt/CAPEv2/storage/binaries/c14461ba6441b42c3c569463057b2d96c117a3c98396d32dc26ccbe23d9df8a1
crc32: 59562D2C
md5: c49c37bbec29e3476de20b0806324b41
sha1: ebda4bb088e966e09ac9523297dbb773bdb08444
sha256: c14461ba6441b42c3c569463057b2d96c117a3c98396d32dc26ccbe23d9df8a1
sha512: 3095d478999b70116ea0d74709907fba7bbfb8470b84a11af811f023bd1cc5af31ccae806e8a20526bcfb7333776c1e58cdc1811e6fd998643a28fea301daddb
ssdeep: 98304:gog8J86f5eQXFt/vg3N6gWhCckMuMfgu7JeSk1X2IJZskxJjGs43Fv3RJnip:gaNtng3N6fQMRIu7JeSkpJTxx00p
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1BA363349F9A06B0FED588235E16229F84B42A09EF292DB734188EF97F441C335379767
sha3_384: 77f03a75cae2eb8aae8a6d770f58a85f5f3d6400d620cebb7519cbaacd0c067b664bd2a77d40189434133f8f07d3b340
ep_bytes: 81ec8001000053555633db57895c2418
timestamp: 2009-12-05 22:50:52

Version Info:
0: [No Data]

Backdoor:PHP/OrbWS.WS!MTB also known as:

Bkav	W32.AIDetectMalware
McAfee	Artemis!C49C37BBEC29
Cylance	unsafe
Sangfor	Trojan.PHP.Agent.Vcfg
Alibaba	Backdoor:PHP/OrbWS.3627dac0
CrowdStrike	win/grayware_confidence_70% (D)
Cyren	ABRisk.PAUS-6
Symantec	Trojan.Gen.MBT
ESET-NOD32	PHP/Agent.SA
APEX	Malicious
NANO-Antivirus	Trojan.Script.Agent.fomlry
ViRobot	Trojan.Win.Z.Packed.5000802
Avast	PHP:Spambot-A [Trj]
DrWeb	PHP.Packed.85
McAfee-GW-Edition	BehavesLike.Win32.Dropper.rc
Trapmine	malicious.high.ml.score
Sophos	Troj/PHPShel-AQ
Ikarus	Backdoor.PHP.SpamBot
Webroot	W32.Malware.Gen
Google	Detected
Antiy-AVL	Trojan[Backdoor]/PHP.OrbWS.ws
Gridinsoft	Trojan.Win32.Packed.sa
Microsoft	Backdoor:PHP/OrbWS.WS!MTB
Cynet	Malicious (score: 100)
AhnLab-V3	WebShell/PHP.Generic.S1897
VBA32	PHP.Packed
Malwarebytes	Malware.AI.37006766
TrendMicro-HouseCall	TROJ_GEN.R002H01I423
Rising	Backdoor.OrbWS/PHP!8.13397 (TOPIS:E0:KNdjrdDaNmT)
AVG	PHP:Spambot-A [Trj]
DeepInstinct	MALICIOUS

How to remove Backdoor:PHP/OrbWS.WS!MTB?

Backdoor:PHP/OrbWS.WS!MTB removal tool

Download and install GridinSoft Anti-Malware.
Open GridinSoft Anti-Malware and perform a “Standard scan“.
“Move to quarantine” all items.
Open “Tools” tab – Press “Reset Browser Settings“.
Select proper browser and options – Click “Reset”.
Restart your computer.

About the author

Paul Valéry

I'm a cyber security analyst and data science expert with 5+ years of experience with security software contractors.

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