Categories: Backdoor

Backdoor.Win32.Tofsee.doxl (file analysis)

The Backdoor.Win32.Tofsee.doxl 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.

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What Backdoor.Win32.Tofsee.doxl virus can do?

  • Executable code extraction
  • Injection (inter-process)
  • Injection (Process Hollowing)
  • Creates RWX memory
  • A process attempted to delay the analysis task.
  • Attempts to connect to a dead IP:Port (20 unique times)
  • Starts servers listening on 0.0.0.0:9296
  • Reads data out of its own binary image
  • A process created a hidden window
  • Drops a binary and executes it
  • Performs some HTTP requests
  • Unconventionial language used in binary resources: Ukrainian
  • The binary likely contains encrypted or compressed data.
  • The executable is compressed using UPX
  • Uses Windows utilities for basic functionality
  • Enumerates services, possibly for anti-virtualization
  • Executed a process and injected code into it, probably while unpacking
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config
  • Installs itself for autorun at Windows startup
  • A possible cryptomining command was executed
  • Attempts to interact with an Alternate Data Stream (ADS)
  • Anomalous binary characteristics

Related domains:

microsoft-com.mail.protection.outlook.com
181.86.68.138.dnsbl.sorbs.net
181.86.68.138.bl.spamcop.net
181.86.68.138.zen.spamhaus.org
181.86.68.138.sbl-xbl.spamhaus.org
181.86.68.138.cbl.abuseat.org
msr.pool-pay.com
app.snapchat.com
market.yandex.ru
IP9100-NPIA00031-00.auth.np.ac.playstation.net
www.instagram.com
www.google.fr
api.sendspace.com
accounts.ea.com

How to determine Backdoor.Win32.Tofsee.doxl?


File Info:

crc32: C3EDE3C9md5: ac1e9caeaed3cbb2f04112dc14ec832dname: AC1E9CAEAED3CBB2F04112DC14EC832D.mlwsha1: fcf950ed4681e3ced92877856ce0a8d0bdbc0ea0sha256: a30a18fab2d4685cd5f8ae516f15f37634eaa7fad00ba99b945929edca7984d1sha512: 4cdb04e097e3cf2e455a3358e00eeaee15b566f01eaa5c3fd324a561e013c7231626a21aaad0f8f337ac23600c8d30475c909ce31e32f29789cce0011d4299e8ssdeep: 3072:ukxNRt6QEG3G9/T4n9MrYlQ9shzesWQ7/TQAaCq:Ntt6QBy/NYlQoqsWQgAaCtype: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

InternalSurname: debaukd.ekzeProd: 1.2.7FileVersions: 1.0.5.6LegalCo: Copyri (C) 2019, permudationzi

Backdoor.Win32.Tofsee.doxl also known as:

Elastic malicious (high confidence)
DrWeb Trojan.Siggen11.56849
MicroWorld-eScan Trojan.GenericKD.45232126
FireEye Generic.mg.ac1e9caeaed3cbb2
Cylance Unsafe
Sangfor Malware
K7AntiVirus Trojan ( 005756611 )
BitDefender Trojan.GenericKD.45232126
K7GW Trojan ( 005756611 )
BitDefenderTheta Gen:NN.ZexaF.34700.jmGfa8P2sMic
Symantec ML.Attribute.HighConfidence
APEX Malicious
Kaspersky Backdoor.Win32.Tofsee.doxl
Ad-Aware Trojan.GenericKD.45232126
McAfee-GW-Edition BehavesLike.Win32.Trojan.cc
Emsisoft Trojan.GenericKD.45232126 (B)
SentinelOne Static AI – Malicious PE
eGambit Unsafe.AI_Score_89%
Avira TR/AD.Tofsee.hxuea
MAX malware (ai score=81)
Microsoft Trojan:Win32/Zenpack.MU!MTB
Arcabit Trojan.Generic.D2B22FFE
ZoneAlarm Backdoor.Win32.Tofsee.doxl
GData Trojan.GenericKD.45232126
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.Glupteba.R361154
Acronis suspicious
McAfee RDN/Generic.grp
Malwarebytes Trojan.MalPack.GS
ESET-NOD32 a variant of Win32/Kryptik.HILR
Rising Backdoor.Agent!8.C5D (TFE:5:IhzqwXEXQUL)
Fortinet W32/Kryptik.HGHW!tr
AVG Win32:DropperX-gen [Drp]
Avast Win32:DropperX-gen [Drp]
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 Win32/Backdoor.58e

How to remove Backdoor.Win32.Tofsee.doxl?

  • 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.
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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