What is Win32/Sirefef.BA infection?

In this article you will certainly locate regarding the definition of Win32/Sirefef.BA as well as its negative influence on your computer. Such ransomware are a kind of malware that is elaborated by online frauds to demand paying the ransom money by a victim.

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In the majority of the cases, Win32/Sirefef.BA infection will certainly advise its targets to initiate funds transfer for the function of counteracting the changes that the Trojan infection has introduced to the sufferer’s tool.

Win32/Sirefef.BA Summary

These modifications can be as follows:

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is compressed using UPX;
  • Ciphering the papers located on the victim’s hard disk drive — so the target can no more use the data;
  • Preventing normal access to the target’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.


One of the most regular networks through which Win32/Sirefef.BA Ransomware are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As an effect of individual winding up on a resource that hosts a malicious software;

As soon as the Trojan is successfully injected, it will either cipher the data on the sufferer’s PC or protect against the device from functioning in a correct fashion – while likewise positioning a ransom money note that states the demand for the targets to impact the repayment for the function of decrypting the records or bring back the documents system back to the first condition. In most instances, the ransom money note will certainly show up when the customer reboots the PC after the system has currently been harmed.

Win32/Sirefef.BA distribution channels.

In numerous corners of the globe, Win32/Sirefef.BA expands by leaps and also bounds. Nonetheless, the ransom money notes as well as techniques of extorting the ransom money quantity may vary relying on particular neighborhood (local) setups. The ransom notes and also methods of obtaining the ransom amount may vary depending on certain regional (local) setups.

Ransomware injection

As an example:

    Faulty informs concerning unlicensed software application.

    In specific areas, the Trojans frequently wrongfully report having discovered some unlicensed applications made it possible for on the victim’s tool. The sharp after that demands the user to pay the ransom.

    Faulty statements concerning unlawful web content.

    In nations where software application piracy is less preferred, this approach is not as effective for the cyber fraudulences. Alternatively, the Win32/Sirefef.BA popup alert may incorrectly claim to be deriving from a police institution as well as will report having situated youngster pornography or other illegal information on the device.

    Win32/Sirefef.BA popup alert might wrongly claim to be acquiring from a legislation enforcement institution and also will certainly report having located kid pornography or various other unlawful information on the tool. The alert will in a similar way consist of a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: 4773779C
md5: a1ab5c0a0e11e2041c7c620c8178d1a8
name: A1AB5C0A0E11E2041C7C620C8178D1A8.mlw
sha1: 77e0d35c2c39471e301ac587dee5f99458658766
sha256: 9111b95715f05a5b9e2ee71ee886e8e993d628269f7395ce7085b41e865d8083
sha512: a9181855e43c638e30cfe0d6b3f13ea009be24eebe0eec25f87e8751dc12a247bccf03b67269a463fe506f21b9654addf39b36b7d95b07c562872b0e7a0b7db0
ssdeep: 3072:sAVa3I6dS4BONYUYmjzQQBoWbZzbTo1Z+q:zWATam/LNRbT2
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

LegalCopyright: ss xgl e idv
InternalName: o hddrng qqhqt
FileVersion: 0.9.2301.3799
CompanyName: ojuj jiqzkhxhmig
ProductName: opnwbgk j
ProductVersion: 0.9.2301.3799
FileDescription: owbfs ptmr km
OriginalFilename: ouy sxsnwtlkw
Translation: 0x0409 0x04b0

Win32/Sirefef.BA also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus RootKit ( 001353201 )
Elastic malicious (high confidence)
DrWeb Trojan.Winlock.1149
Cynet Malicious (score: 100)
ALYac Trojan.Generic.3314866
Cylance Unsafe
Zillya Trojan.Digitala.Win32.133
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_90% (W)
Alibaba Ransom:Win32/Digitala.3f0eb011
K7GW RootKit ( 001353201 )
Cybereason malicious.a0e11e
Cyren W32/Risk.KXFX-4143
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Sirefef.BA
APEX Malicious
Avast Win32:Konar-B [Trj]
ClamAV Win.Trojan.Digitala-152
Kaspersky Trojan-Ransom.Win32.Digitala.gen
BitDefender Trojan.Generic.3314866
NANO-Antivirus Trojan.Win32.Scar.offx
MicroWorld-eScan Trojan.Generic.3314866
Tencent Win32.Trojan.Digitala.Llqx
Ad-Aware Trojan.Generic.3314866
Sophos Mal/FakeAV-JN
Comodo Malware@#248iob03g45l9
BitDefenderTheta AI:Packer.30CE785D1F
VIPRE Trojan.Win32.Generic!BT
Emsisoft Trojan.Generic.3314866 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/
Microsoft Trojan:Win32/Dynamer!ac
Arcabit Trojan.Generic.D3294B2
AegisLab Trojan.Win32.Generic.j!c
GData Trojan.Generic.3314866
AhnLab-V3 Trojan/Win32.Digitala.R95823
McAfee Generic.adm
MAX malware (ai score=88)
VBA32 Trojan-Dropper.Win32.0216
Malwarebytes Malware.Heuristic.1003
Panda Trj/Genetic.gen
Rising Ransom.Digitala!8.305 (CLOUD)
Yandex Trojan.GenAsa!QKRQVLQMAJc
Ikarus Trojan.Win32.Sirefef
Fortinet W32/Digitala.U!tr
AVG Win32:Konar-B [Trj]
Qihoo-360 Win32/Ransom.Generic.HwsB4wMA

How to remove Win32/Sirefef.BA ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Win32/Sirefef.BA files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:

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If the guide doesn’t help you to remove Win32/Sirefef.BA you can always ask me in the comments for getting help.

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About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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