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MB-4209b66b89a5c71726b5fbadc8e3ce04ea92d935143170fd25c8928bd1fcdf50 high

📛 Threat Title

NanoCore: vn88.co.com.exe

Category: NanoCore Published: Source updated: First seen: Last updated: Source: Abuse.ch

Description

File type: exe. Size: 207872 bytes. Tags: exe, NanoCore, RAT. Reporter: abuse_ch. First seen: 2026-05-14 15:05:05.

Indicators of Compromise (5)

Each indicator is enriched from the IOC database, threat-intel feed corroboration (Threat Hunt) and VirusTotal. Click one to expand.

domain vn88.co.com.exe VT: VT base fetch failed: HTTPError: 429 Client Error: Too Many Requests for url: https://www.virustotal.com/api/v3/domains/vn88.co.com.exe

IOC database

Type
domain
Value
vn88.co.com.exe
First seen
Last seen
Attached to this threat
Appears in
1 threat
Description
Extracted from Threat MB-4209b66b89a5c71726b5fbadc8e3ce04ea92d935143170fd25c8928bd1fcdf50

Open the full IOC page →

Threat Hunt — feed corroboration

Not present in any configured threat-intel feed.

Details From VirusTotal

VirusTotal: VT base fetch failed: HTTPError: 429 Client Error: Too Many Requests for url: https://www.virustotal.com/api/v3/domains/vn88.co.com.exe

hash_imphash f34d5f2d4577ed6d9ceec516c1f5a744

IOC database

Type
hash_imphash
Value
f34d5f2d4577ed6d9ceec516c1f5a744
First seen
Last seen
Attached to this threat
Appears in
648 threats
Description
imphash of URLhaus payload 61d424c2e3c5d8db…

Open the full IOC page →

Threat Hunt — feed corroboration

Not present in any configured threat-intel feed.

Details From VirusTotal

No VirusTotal details cached for this IOC. Open the IOC page to query VirusTotal.

hash_sha256 4209b66b89a5c71726b5fbadc8e3ce04ea92d935143170fd25c8928bd1fcdf50 VT 65 / 75 1 feed

IOC database

Type
hash_sha256
Value
4209b66b89a5c71726b5fbadc8e3ce04ea92d935143170fd25c8928bd1fcdf50
First seen
Last seen
Attached to this threat
Appears in
2 threats
Description
NanoCore

Open the full IOC page →

Threat Hunt — feed corroboration

Listed by 1 threat-intel feed vendor: Abuse.ch. Open in Threat Hunt →

Flagged by 65 of 75 VirusTotal vendors

VendorVerdictDetection
AhnLab-V3 malicious Win-Trojan/Nanocore.Exp
Alibaba malicious Trojan:Win32/NanoCore.348
alibabacloud malicious Backdoor:MSIL/Vindor.Gen
ALYac malicious Backdoor.MSIL.Agent.GD
Antiy-AVL malicious Trojan/MSIL.NanoCore
APEX malicious Malicious
Arcabit malicious Backdoor.MSIL.Agent.GD
Avast malicious MSIL:NanoCore-B [Trj]
AVG malicious MSIL:NanoCore-B [Trj]
Avira malicious TR/Dropper.MSIL.Gen7
BitDefender malicious Backdoor.MSIL.Agent.GD
Bkav malicious W32.Malware.899CEB03
CAT-QuickHeal malicious Trojan.Orbus.C3
ClamAV malicious Win.Trojan.NanoCore-9852758-0
CrowdStrike malicious win/malicious_confidence_100% (W)
CTX malicious exe.trojan.nanocore
Cylance malicious Unsafe
DeepInstinct malicious MALICIOUS
DrWeb malicious Trojan.Nanocore.23
Elastic malicious Windows.Trojan.Nanocore
Emsisoft malicious Trojan.NanoCore (A)
ESET-NOD32 malicious MSIL/NanoCore.E trojan
F-Secure malicious Trojan.TR/Dropper.MSIL.Gen7
Fortinet malicious MSIL/NanoCore.K!tr
GData malicious MSIL.Backdoor.Nancat.A
Google malicious Detected
Gridinsoft malicious Backdoor.Win32.Noancooe.cc!ni
huorong malicious Backdoor/MSIL.NanoCore.b
Ikarus malicious Backdoor.Rat.Nanocore
Jiangmin malicious Backdoor.Generic.zwu
K7AntiVirus malicious Trojan ( 005b2a921 )
K7GW malicious Trojan ( 0057b88c1 )
Kaspersky malicious Trojan.MSIL.Agent.fpar
Kingsoft malicious malware.kb.c.1000
Lionic malicious Trojan.Win32.Generic.mhUN
Malwarebytes malicious Backdoor.NanoCore
MaxSecure malicious Trojan.Malware.300983.susgen
McAfeeD malicious Real Protect-LS!EEE9502F7EFC
Microsoft malicious Backdoor:MSIL/Nanocore!atmn
MicroWorld-eScan malicious Backdoor.MSIL.Agent.GD
NANO-Antivirus malicious Trojan.Win32.NanoBot.hmqoyu
Paloalto malicious generic.ml
Panda malicious Bck/Agent.KNM
Rising malicious Backdoor.NanoCore!1.B6F9 (CLASSIC)
Sangfor malicious Suspicious.Win32.Save.a
SentinelOne malicious Static AI - Malicious PE
Skyhigh malicious Trojan-FICC!EEE9502F7EFC
Sophos malicious Troj/NanoCor-BT
SUPERAntiSpyware malicious Backdoor.Nanocore/Variant
TACHYON malicious Backdoor/W32.DN-Nanocore.207872
tehtris malicious Generic.Malware
Tencent malicious Trojan.Msil.Agent.fb
Trapmine malicious malicious.high.ml.score
TrellixENS malicious Trojan-FICC!EEE9502F7EFC
TrendMicro malicious BKDR_NOANCOOE.SM
TrendMicro-HouseCall malicious BKDR_NOANCOOE.SM
Varist malicious W32/NanoCore.C.gen!Eldorado
VBA32 malicious Trojan.MSIL.NanoCore.Heur
VIPRE malicious Backdoor.MSIL.Agent.GD
VirIT malicious Trojan.Win32.DownLoader12.BSON
ViRobot malicious Backdoor.Win32.NanoCore.Gen.A
Webroot malicious Win.Trojan.Gen
Xcitium malicious Backdoor.MSIL.Noancooe.JDE@5s4u9t
ZoneAlarm malicious Troj/NanoCor-BT
Zoner malicious Trojan.Win32.48280

Details From VirusTotal

Basic Properties
MD5eee9502f7efc69ab926071147c8dd1c6
SHA-1887dcfa178a348ebe0279c37fc54f8ab65982b9d
SHA-2564209b66b89a5c71726b5fbadc8e3ce04ea92d935143170fd25c8928bd1fcdf50
VHash22503665157170993c1160150
SSDEEP6144:sLV6Bta6dtJmakIM5FMBrwBJnaMC8xFev7y4QT1tb:sLV6BtpmksMFIPHPe2Dtb
TLSHT11614C01677A94A3FD2DE82B961221143937CC2E399C3F7EE28D464B64F267E50A071D3
File typeWin32 EXE
File type tagpeexe
File extensionexe
MagicPE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
File size203.0 KB
History
Creation date2015-02-22 00:49 UTC
First seen on VirusTotal2026-05-13 14:59 UTC
Last submission2026-05-14 15:11 UTC
Last analysis2026-05-18 16:44 UTC
Last modified on VirusTotal2026-05-20 21:15 UTC
Known Names
  • 4209b66b89a5c71726b5fbadc8e3ce04ea92d935143170fd25c8928bd1fcdf50.exe
  • oyolz56.exe
  • vn88.co.com
hash_sha1 887dcfa178a348ebe0279c37fc54f8ab65982b9d VT: VT base fetch failed: HTTPError: 429 Client Error: Too Many Requests for url: https://www.virustotal.com/api/v3/files/887dcfa178a348ebe0279c37fc54f8ab65982b9d
2 feeds

IOC database

Type
hash_sha1
Value
887dcfa178a348ebe0279c37fc54f8ab65982b9d
First seen
Last seen
Attached to this threat
Appears in
2 threats

Open the full IOC page →

Threat Hunt — feed corroboration

Listed by 2 threat-intel feed vendors: Abuse.ch, threatview.io. Open in Threat Hunt →

Details From VirusTotal

VirusTotal: VT base fetch failed: HTTPError: 429 Client Error: Too Many Requests for url: https://www.virustotal.com/api/v3/files/887dcfa178a348ebe0279c37fc54f8ab65982b9d

hash_md5 eee9502f7efc69ab926071147c8dd1c6 VT 65 / 75 2 feeds

IOC database

Type
hash_md5
Value
eee9502f7efc69ab926071147c8dd1c6
First seen
Last seen
Attached to this threat
Appears in
2 threats

Open the full IOC page →

Threat Hunt — feed corroboration

Listed by 2 threat-intel feed vendors: Abuse.ch, threatview.io. Open in Threat Hunt →

Flagged by 65 of 75 VirusTotal vendors

VendorVerdictDetection
AhnLab-V3 malicious Win-Trojan/Nanocore.Exp
Alibaba malicious Trojan:Win32/NanoCore.348
alibabacloud malicious Backdoor:MSIL/Vindor.Gen
ALYac malicious Backdoor.MSIL.Agent.GD
Antiy-AVL malicious Trojan/MSIL.NanoCore
APEX malicious Malicious
Arcabit malicious Backdoor.MSIL.Agent.GD
Avast malicious MSIL:NanoCore-B [Trj]
AVG malicious MSIL:NanoCore-B [Trj]
Avira malicious TR/Dropper.MSIL.Gen7
BitDefender malicious Backdoor.MSIL.Agent.GD
Bkav malicious W32.Malware.899CEB03
CAT-QuickHeal malicious Trojan.Orbus.C3
ClamAV malicious Win.Trojan.NanoCore-9852758-0
CrowdStrike malicious win/malicious_confidence_100% (W)
CTX malicious exe.trojan.nanocore
Cylance malicious Unsafe
DeepInstinct malicious MALICIOUS
DrWeb malicious Trojan.Nanocore.23
Elastic malicious Windows.Trojan.Nanocore
Emsisoft malicious Trojan.NanoCore (A)
ESET-NOD32 malicious MSIL/NanoCore.E trojan
F-Secure malicious Trojan.TR/Dropper.MSIL.Gen7
Fortinet malicious MSIL/NanoCore.K!tr
GData malicious MSIL.Backdoor.Nancat.A
Google malicious Detected
Gridinsoft malicious Backdoor.Win32.Noancooe.cc!ni
huorong malicious Backdoor/MSIL.NanoCore.b
Ikarus malicious Backdoor.Rat.Nanocore
Jiangmin malicious Backdoor.Generic.zwu
K7AntiVirus malicious Trojan ( 005b2a921 )
K7GW malicious Trojan ( 0057b88c1 )
Kaspersky malicious Trojan.MSIL.Agent.fpar
Kingsoft malicious malware.kb.c.1000
Lionic malicious Trojan.Win32.Generic.mhUN
Malwarebytes malicious Backdoor.NanoCore
MaxSecure malicious Trojan.Malware.300983.susgen
McAfeeD malicious Real Protect-LS!EEE9502F7EFC
Microsoft malicious Backdoor:MSIL/Nanocore!atmn
MicroWorld-eScan malicious Backdoor.MSIL.Agent.GD
NANO-Antivirus malicious Trojan.Win32.NanoBot.hmqoyu
Paloalto malicious generic.ml
Panda malicious Bck/Agent.KNM
Rising malicious Backdoor.NanoCore!1.B6F9 (CLASSIC)
Sangfor malicious Suspicious.Win32.Save.a
SentinelOne malicious Static AI - Malicious PE
Skyhigh malicious Trojan-FICC!EEE9502F7EFC
Sophos malicious Troj/NanoCor-BT
SUPERAntiSpyware malicious Backdoor.Nanocore/Variant
TACHYON malicious Backdoor/W32.DN-Nanocore.207872
tehtris malicious Generic.Malware
Tencent malicious Trojan.Msil.Agent.fb
Trapmine malicious malicious.high.ml.score
TrellixENS malicious Trojan-FICC!EEE9502F7EFC
TrendMicro malicious BKDR_NOANCOOE.SM
TrendMicro-HouseCall malicious BKDR_NOANCOOE.SM
Varist malicious W32/NanoCore.C.gen!Eldorado
VBA32 malicious Trojan.MSIL.NanoCore.Heur
VIPRE malicious Backdoor.MSIL.Agent.GD
VirIT malicious Trojan.Win32.DownLoader12.BSON
ViRobot malicious Backdoor.Win32.NanoCore.Gen.A
Webroot malicious Win.Trojan.Gen
Xcitium malicious Backdoor.MSIL.Noancooe.JDE@5s4u9t
ZoneAlarm malicious Troj/NanoCor-BT
Zoner malicious Trojan.Win32.48280

Details From VirusTotal

Basic Properties
MD5eee9502f7efc69ab926071147c8dd1c6
SHA-1887dcfa178a348ebe0279c37fc54f8ab65982b9d
SHA-2564209b66b89a5c71726b5fbadc8e3ce04ea92d935143170fd25c8928bd1fcdf50
VHash22503665157170993c1160150
SSDEEP6144:sLV6Bta6dtJmakIM5FMBrwBJnaMC8xFev7y4QT1tb:sLV6BtpmksMFIPHPe2Dtb
TLSHT11614C01677A94A3FD2DE82B961221143937CC2E399C3F7EE28D464B64F267E50A071D3
File typeWin32 EXE
File type tagpeexe
File extensionexe
MagicPE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
File size203.0 KB
History
Creation date2015-02-22 00:49 UTC
First seen on VirusTotal2026-05-13 14:59 UTC
Last submission2026-05-14 15:11 UTC
Last analysis2026-05-18 16:44 UTC
Last modified on VirusTotal2026-05-20 21:15 UTC
Known Names
  • 4209b66b89a5c71726b5fbadc8e3ce04ea92d935143170fd25c8928bd1fcdf50.exe
  • oyolz56.exe
  • vn88.co.com

References (1)

  • MalwareBazaar sample page Abuse.ch

    File type: exe. Size: 207872 bytes. Tags: exe, NanoCore, RAT. Reporter: abuse_ch. First seen: 2026-05-14 15:05:05.

Remediations (10)

  • NanoCore, Software S0336 | MITRE ATT&CK®
    web:attack.mitre.org

    NanoCore is a modular remote access tool developed in .NET that can be used to spy on victims and steal information. It has been used by threat actors since 2013.

  • MalwareBazaar | NanoCore - abuse.ch
    web:bazaar.abuse.ch

    NanoCore malware samples MalwareBazaar Database MalwareBazaar tries to identify the malware family (signature) of submitted malware samples. A malware sample can be associated with only one malware family. The page below gives you an overview on malware samples that MalwareBazaar has identified as NanoCore . Database Entry

  • Nanocore - Cybersight Malware Samples
    web:cybersight-security.github.io

    Nanocore typically spreads through phishing emails, malicious downloads, or exploit kits. Once installed on a victim's computer, Nanocore establishes communication with a command-and-control (C2) server operated by the attacker, enabling remote control and data exfiltration.

  • Nanocore client is running - Resolved Malware Removal Logs ...
    web:forums.malwarebytes.com

    Greetings, I have just received a laptop from one of my users with the nasty nanocore client running on it. I have tried many various adware/virus removal software and it is still there. I finally found some posts regarding this and have ran FRST. This forum seems to be the only way to remove thi...

  • GitHub - PaleoMenace/NanoCore: Nanocore download for those who want to ...
    web:github.com

    About Nanocore download for those who want to do malware analysis on it and study it's behavior as well as play around with its features.

  • NanoCore RAT Malware Analysis
    web:malwr-analysis.com

    NanoCore is a well-known Remote Access Trojan (RAT) used by threat actors for espionage, data theft, and system control. In this post, I will analyze a NanoCore RAT sample with the hash 18B476D37244CB0B435D7B06912E9193 and explore its behavior, obfuscation techniques, and deobfuscation process.

  • NANOCORE Malware Information - Trend Micro
    web:success.trendmicro.com

    The NanoCore remote access Trojan (RAT) was first discovered in 2013 when it was being sold in underground forums. The malware has a variety of functions such as keylogger, a password stealer which can remotely pass along data to the malware operator. It also has the ability to tamper and view footage from webcams, screen locking, downloading and theft of files, and more. The current NanoCore ...

  • NanoCore virus? - Virus, Trojan, Spyware, and Malware Removal Help
    web:www.bleepingcomputer.com

    NanoCore virus? - posted in Virus, Trojan, Spyware, and Malware Removal Help: Hi all, It seems I have picked up a nasty virus. I keep getting the attached prompt. I looked into it and it seems ...

  • NanoCore Malware: Analysis, Detection, Removal | Huntress
    web:www.huntress.com

    NanoCore Removal Instructions If you suspect a NanoCore infection, disconnect the infected device from the network immediately to prevent further data exfiltration or lateral movement. Manual removal is complex and not recommended for non-experts, as the malware embeds itself deep within the system.

  • NanoCore RAT Virus - Malware removal instructions (updated) - PCrisk
    web:www.pcrisk.com

    What is NanoCore ? NanoCore is high-risk trojan, a remote access tool (RAT). In most cases, this malware is proliferated using spam email campaigns. Criminals send thousands of deceptive emails that contain malicious attachments. Once opened, these files immediately infect computers with viruses such as NanoCore . The presence of this malware can cause serious issues, since the malware ...

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