MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 55683870bb1788d487bc2e64f1fcbcc1ad18a58fd21c57fa2c71d2ca6ca6003b. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Threat unknown


Vendor detections: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 55683870bb1788d487bc2e64f1fcbcc1ad18a58fd21c57fa2c71d2ca6ca6003b
SHA3-384 hash: 1b49bce1cd757b9b021f43f0a669f9b04224aab36ac186064c58cb63fde7a7b2c3a811293650dbc9233297f0ed8423f3
SHA1 hash: 73c8a7ba43a92bc6f6fb61d2d170c311a1e59cfd
MD5 hash: e718a0c69a63b93716d3b38fbd613818
humanhash: maryland-alabama-yankee-purple
File name:Nemurenai.exe
Download: download sample
File size:77'317'482 bytes
First seen:2026-05-14 21:57:03 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (584 x GuLoader, 129 x RemcosRAT, 84 x EpsilonStealer)
ssdeep 1572864:nt9IKPAF9eyRWYs+v4//v/bwcEOMOUHwDu8vkjUOle+10lSB7:nUKGBRWwLFOCwS8sjUOle+1DB7
TLSH T1B908331892ECC3A7CDEFD5BA86C096D1D380C94FDE76A84F536A2894F5814C6009E7B7
TrID 50.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
10.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
10.5% (.EXE) Win64 Executable (generic) (6522/11/2)
8.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.2% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon c427125232324fb0
Reporter lfr
Tags:exe


Avatar
lfr
https://varsos50.itch.io/nemurenai-yoru

https://www.virustotal.com/gui/file/48adbb5bf6f63b2bb7d28dd2150d19ad5f383590b4ed80a3b00c471491631c5d/detection
https://www.virustotal.com/gui/file/55683870bb1788d487bc2e64f1fcbcc1ad18a58fd21c57fa2c71d2ca6ca6003b/detection
https://www.virustotal.com/gui/file/1fe0324e92200638922bb373c746a7cd904060b3cf0163ebde72122e7e27e62b/detection

Intelligence

File Origin
# of uploads :
1
# of downloads :
136
Origin country :
FR FR
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/0041eada-78c4-41c5-a709-01d59d7a0ae6/
Malware family:
n/a
ID:
1
File name:
_55683870bb1788d487bc2e64f1fcbcc1ad18a58fd21c57fa2c71d2ca6ca6003b.exe
Verdict:
Malicious activity
Analysis date:
2026-05-14 22:04:09 UTC
Tags:
themida
Link:
https://app.any.run/tasks/f1165376-bb0b-4d0b-839a-4b074d6f77bc

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a064560953bbcef1c9050f4
Tags:
xtreme shell sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Searching for the window
Launching a service
Сreating synchronization primitives
Creating a process from a recently created file
Creating a window
Unauthorized injection to a recently created process
Running batch commands
Creating a process with a hidden window
Searching for synchronization primitives
Loading a suspicious library
Launching the process to interact with network services
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Moving a file to the %AppData% subdirectory
Changing a file
Launching a tool to kill processes
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-debug anti-vm base64 crypto evasive expand expired-cert fingerprint fingerprint hacktool installer installer installer-heuristic lolbin microsoft_visual_cc nsis obfuscated packed reconnaissance wiper
Link:
https://www.filescan.io/uploads/6a0645652fcb905ec298d360/reports/8a3d198a-0617-46cd-a009-12334dbb4b91/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/55683870bb1788d487bc2e64f1fcbcc1ad18a58fd21c57fa2c71d2ca6ca6003b
Verdict:
Clean
File Type:
exe x32
First seen:
2026-05-14T20:19:00Z UTC
Last seen:
2026-05-16T18:10:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/55683870bb1788d487bc2e64f1fcbcc1ad18a58fd21c57fa2c71d2ca6ca6003b/results?tab=lookup
Score:
59%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/55683870bb1788d487bc2e64f1fcbcc1ad18a58fd21c57fa2c71d2ca6ca6003b
Gathering data
Verdict:
Clean
Link:
https://tip.neiki.dev/file/55683870bb1788d487bc2e64f1fcbcc1ad18a58fd21c57fa2c71d2ca6ca6003b
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kvudq4f3c6enjb54fzspd7f4ygwrrjmp2iofp6rmohjmu3fgaa5q._file
Gathering data
Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:Detect_NSIS_Nullsoft_Installer
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects NSIS installers by .ndata section + NSIS header string
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:https://cyfare.net/

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Executable exe 55683870bb1788d487bc2e64f1fcbcc1ad18a58fd21c57fa2c71d2ca6ca6003b

(this sample)

  
Delivery method
Distributed via web download

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