Categories: Malware

Symmi.21621 removal guide

The Symmi.21621 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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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 Symmi.21621 virus can do?

  • The binary contains an unknown PE section name indicative of packing
  • The binary likely contains encrypted or compressed data.
  • The executable is compressed using UPX
  • Authenticode signature is invalid

How to determine Symmi.21621?


File Info:

name: F4B65798B2B95E90D46E.mlwpath: /opt/CAPEv2/storage/binaries/f2f4c4c818bd905aff90d1f04ed15289289030bb3ca401e3e0fd7ea44def5ae2crc32: AC2A41CFmd5: f4b65798b2b95e90d46eb131c34f6833sha1: d0483acee551a80c01d4571eb86c581fa5228692sha256: f2f4c4c818bd905aff90d1f04ed15289289030bb3ca401e3e0fd7ea44def5ae2sha512: f896b675dd67e0c635baa027d1122198242665638b0a67438ce8452b6e6471c5b5f8caea5dd541013c6cc46e3a2d744102d4394c4eedd9cd878d0b27d6e0b2d5ssdeep: 768:IGtQh/j1K53Kf0X2y3xwvXbNlsV8CjTGqR7pRWXhCpk77y5nHMtJ9PwEB4j8nniP:ImQdY539R3sLNlwG0uRFyBMtTP9nnitptype: PE32 executable (GUI) Intel 80386, for MS Windowstlsh: T19A23F100E5F891BAF0F727B064F9030A586EBC4173B59B090774584F2EB286DED28772sha3_384: bf5339f495006a7767b152d08bd133b9966d1fb095247b046f31e692aee1e356e55e8afa12e9fbddb6dacbecbe0d6fe1ep_bytes: 60be00d040008dbe0040ffff5783cdfftimestamp: 2009-07-08 19:43:24

Version Info:

Comments: Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.CompanyName: Apache Software FoundationFileDescription: ApacheBench command line utilityFileVersion: 2.2.14InternalName: ab.exeLegalCopyright: Copyright 2009 The Apache Software Foundation.OriginalFilename: ab.exeProductName: Apache HTTP ServerProductVersion: 2.2.14Translation: 0x0409 0x04b0

Symmi.21621 also known as:

Bkav W32.AIDetectMalware
Lionic Trojan.Win32.Jorik.lrUS
MicroWorld-eScan Gen:Variant.Symmi.21621
ClamAV Win.Trojan.Swrort-5710536-0
FireEye Generic.mg.f4b65798b2b95e90
CAT-QuickHeal Trojan.Swrort.A
ALYac Gen:Variant.Symmi.21621
Cylance unsafe
VIPRE Gen:Variant.Symmi.21621
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 0058f5f51 )
Alibaba Trojan:Win32/CobaltStrike.5c89
K7GW Trojan ( 0058f5f51 )
Cyren W32/Swrort.D
Symantec ML.Attribute.HighConfidence
Elastic malicious (moderate confidence)
ESET-NOD32 a variant of Win32/Rozena.ADH
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Symmi.21621
NANO-Antivirus Virus.Win32.Gen-Crypt.ccnc
Avast Win32:Evo-gen [Trj]
Emsisoft Gen:Variant.Symmi.21621 (B)
F-Secure Trojan.TR/Patched.Gen2
Zillya Trojan.RozenaGen.Win32.2
TrendMicro Backdoor.Win32.SWRORT.SMAL01
Trapmine malicious.high.ml.score
Sophos Mal/Generic-S
Ikarus Exploit.PDF
GData Gen:Variant.Symmi.21621
Webroot W32.Trojan.Swrort.Gen
Avira TR/Patched.Gen2
Antiy-AVL Trojan/Win32.Rozena
Kingsoft malware.kb.b.933
Xcitium TrojWare.Win32.Rozena.A@4jwdqr
Arcabit Trojan.Symmi.D5475
ZoneAlarm HEUR:Trojan.Win32.Generic
Microsoft Trojan:Win32/Wacatac.B!ml
Google Detected
AhnLab-V3 Backdoor/Win32.Bifrose.R12476
McAfee GenericRXAA-AA!F4B65798B2B9
MAX malware (ai score=89)
VBA32 Trojan.Swrort
Malwarebytes Generic.Malware.AI.DDS
Panda Trj/Genetic.gen
TrendMicro-HouseCall Backdoor.Win32.SWRORT.SMAL01
Rising Trojan.Crypto!8.364 (TFE:5:qRUE1u5wYD)
Yandex Trojan.GenAsa!O0/tdGI4TGA
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Rozena.ABV!tr
BitDefenderTheta Gen:NN.ZexaF.36738.cmKfayh5cNdi
AVG Win32:Evo-gen [Trj]
DeepInstinct MALICIOUS
CrowdStrike win/malicious_confidence_100% (W)

How to remove Symmi.21621?

  • 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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