MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a2bc726a75790e94e3854cd7f8b1f3a4f03c3d7e9f38569f3d8de02fbcb2c6b. 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


RemcosRAT


Vendor detections: 16


Intelligence 16 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a2bc726a75790e94e3854cd7f8b1f3a4f03c3d7e9f38569f3d8de02fbcb2c6b
SHA3-384 hash: 3c91b66a8dac44704e72397ee6a77d2d846aa1d2e9b988290a52ab6ab2f499b7f33adae3a98b4af2a5fcca46442ac749
SHA1 hash: 47506ace87383d72f634af2503133903a65ae286
MD5 hash: 04271bd1a58a245a90ed4ba7edac6038
humanhash: arkansas-emma-pennsylvania-magnesium
File name:Preinterest.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:754'456 bytes
First seen:2026-04-16 09:06:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 0293eec0b5432ad092f24065016203b2 (22 x GuLoader, 18 x RemcosRAT, 6 x Formbook)
ssdeep 12288:jSW9MrpT34uxqhxw3LppTmZMrxhxd15w6zjt:jSW9MrpT3kbw3LHmGrnxdh
TLSH T109F44C517670E7AEF6761A39B4CAC26D64547C30AD06038FF1B03EA847B2EAC5F82751
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 d4d878787024d0c0 (8 x RemcosRAT, 1 x GuLoader)
Reporter threatcat_ch
Tags:exe RemcosRAT signed

Code Signing Certificate

Organisation:Geosphere
Issuer:Geosphere
Algorithm:sha256WithRSAEncryption
Valid from:2026-03-12T04:56:10Z
Valid to:2027-03-12T04:56:10Z
Serial number: 47a13c9169c1767cf15f51fef6040182596b0b90
Thumbprint Algorithm:SHA256
Thumbprint: 1b933ee33fd1db688d965f6c6322c050b44920ca8dd483091c4d6883c264f3dd
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
183
Origin country :
CH CH
Vendor Threat Intelligence
Malware configuration found for:
NSIS
Details
Link:
https://research.acce.ciphertechsolutions.com/results/ab89dd29-6ce9-46a4-8b73-3e4fc17e2a51/
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Preinterest.exe
Verdict:
Malicious activity
Analysis date:
2026-04-16 09:09:46 UTC
Tags:
rat remcos auto-reg
Link:
https://app.any.run/tasks/8dd231f1-5005-4518-b6bc-6399fa2498a0

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/61852/
Detection(s):
SecuriteInfo.com.FileRepMalware.54232437.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69e0a6bc45787c53e53a3436
Tags:
injection obfusc blic
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file
Delayed reading of the file
Restart of the analyzed sample
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug installer installer installer-heuristic microsoft_visual_cc nsis signed soft-404
Link:
https://www.filescan.io/uploads/69e0a6be799d5bf32501fa4c/reports/8218bee8-2c8e-4bcc-a1d5-b354e528c47b/overview
Verdict:
Suspicious
Labled as:
Injector.BYI.gen
Link:
https://www.hybrid-analysis.com/sample/4a2bc726a75790e94e3854cd7f8b1f3a4f03c3d7e9f38569f3d8de02fbcb2c6b
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-04-16T01:35:00Z UTC
Last seen:
2026-04-18T06:58:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/4a2bc726a75790e94e3854cd7f8b1f3a4f03c3d7e9f38569f3d8de02fbcb2c6b/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/44986cc2-cf9b-4813-8803-84df4b3c094d
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1899338
Signature
AI detected suspicious PE digital signature
Found direct / indirect Syscall (likely to bypass EDR)
Multi AV Scanner detection for submitted file
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Behaviour
Behavior Graph:
Download SVG
Score:
80%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4a2bc726a75790e94e3854cd7f8b1f3a4f03c3d7e9f38569f3d8de02fbcb2c6b
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4a2bc726a75790e94e3854cd7f8b1f3a4f03c3d7e9f38569f3d8de02fbcb2c6b/
Verdict:
Malicious
Threat:
Family.REMCOS
Link:
https://tip.neiki.dev/file/4a2bc726a75790e94e3854cd7f8b1f3a4f03c3d7e9f38569f3d8de02fbcb2c6b
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2026-04-16 08:20:20 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
23 of 38 (60.53%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jiv4ojvhk6iostryktgx7cy7hjhqhq6x5hzyk2pt3dpaf66lfrvq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery installer persistence rat
Link:
https://tria.ge/reports/260416-k2954aez2v/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
NSIS installer
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Contacts third-party web service commonly abused for C2
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Family: Remcos
Malware Config
C2 Extraction:
130.12.181.39:2404
Unpacked files
SH256 hash:
4a2bc726a75790e94e3854cd7f8b1f3a4f03c3d7e9f38569f3d8de02fbcb2c6b
MD5 hash:
04271bd1a58a245a90ed4ba7edac6038
SHA1 hash:
47506ace87383d72f634af2503133903a65ae286
Link:
https://www.unpac.me/results/2a0d99aa-e5dc-4528-b3e6-096586955070/
SH256 hash:
014f1dfeb842cf7265a3644bc6903c592abe9049bfc7396829172d3d72c4d042
MD5 hash:
12b140583e3273ee1f65016becea58c4
SHA1 hash:
92df24d11797fefd2e1f8d29be9dfd67c56c1ada
Link:
https://www.unpac.me/results/2a0d99aa-e5dc-4528-b3e6-096586955070/
SH256 hash:
b2699fdfdab6a018fcc972806d12f71972de1861660bb6578935d62b1da06504
MD5 hash:
3cea4c9994912d8f3c3e8b6a814e810e
SHA1 hash:
c48d34a0981d4ab576c7a3ab566f5ddb94af5d86
Link:
https://www.unpac.me/results/2a0d99aa-e5dc-4528-b3e6-096586955070/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4a2bc726a757/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.52
Link:
https://yomi.yoroi.company/submissions/4a2bc726a75790e94e3854cd7f8b1f3a4f03c3d7e9f38569f3d8de02fbcb2c6b

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:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

File information

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

Malspam

RemcosRAT

Executable exe 4a2bc726a75790e94e3854cd7f8b1f3a4f03c3d7e9f38569f3d8de02fbcb2c6b

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/61852/

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